255results about How to "Ensure control" patented technology

A railroad train is provided and includes a first locomotive having a first locomotive electronic processor, a first locomotive communication device in electrical communication with the first locomotive processor, and a first locomotive operator interface in electrical communication with the first locomotive processor. The railroad train also includes a second locomotive having a second locomotive electronic processor, a second locomotive communication device in electrical communication with the second locomotive processor and the first locomotive communication device, a second locomotive sensor in electrical communication with the second locomotive processor for monitoring the operation of the second locomotive and generating signals indicative of the monitored operations, and a second locomotive controller device in electrical communication with the second locomotive processor for controlling the operation of the second locomotive, with the second locomotive processor receiving the signals indicative of the operation of the second locomotive, determining faults in the operation of the second locomotive, and communicating signals indicative of the faults to the second locomotive communication device for transmission to the first locomotive operator interface via the first locomotive communication device and the first locomotive processor, and with the second locomotive controller device being controllable from the first locomotive interface, wherein faults in the operation of the second locomotive are communicated to the first locomotive operator interface and control actions on the operation of the second locomotive in response to the faults may be effected by an operator on the first locomotive.

A method and apparatus provide security for a network-connected vehicle (or other networked environment) in which a predefined set of permitted operations relating to protected resources can be initiated remotely from elsewhere in the network, while security is maintained for the protected resources (for example, an engine performance optimisation control unit or air conditioning control unit within a vehicle) by preventing remote initiation of any other operations on a data processing unit which is connected to the protected resources. One of a pair of gateway components runs on each of two data processing units within the vehicle (or other environment), the first processing unit being connected to the vehicle's device control units and the second processing unit being connected to the external network. The gateway components control the types of communications which can be passed from the network-connected side to the first processing unit such that only permitted operations can be requested and no unauthorised operations can be initiated remotely.

The invention discloses a fluidized bed boiler control and combustion optimization system. The problem that a fluidized bed boiler system is not easy to control for a long time is solved. According to a method, a control strategy of combining an advanced control algorithm and a conventional control algorithm is adopted, and continuous, economical and stable operating of the boiler system is guaranteed; multivariable model-free adaptive control is adopted, and decoupling control of the fuel quantity and the air supply quantity over the bed temperature under the variable load work condition is achieved; and a nerual network technique is adopted for building a boiler combustion prediction model, online calculation of the boiler efficiency and NOX and SOX emissions is achieved, a multi-objective optimization function is constructed according to the prediction result, a combustion self-optimization algorithm is adopted, the flue gas oxygen content and the bed temperature are optimized constantly so as to adapt to work condition changes, and a fluidized bed boiler can operate in an optimal combustion area.

A system and a method for secure distribution of digital media content through a packet-based network such as the Internet. The security of the present invention does not require one-to-one key exchange, but rather enables keys, and / or information required in order to build the key, to be broadcast through the packet-based network. The digital media content is then also preferably broadcast, but cannot be accessed without the proper key. However, preferably only authorized end-user devices are able to access the digital media content, by receiving and / or being able to access the proper key. Thus, the present invention is useful for other types of networks in which digital media content is more easily broadcast rather than unicast, in addition to packet-based networks.

The invention discloses a layering predictive control system and method based on model predictive control. The layering predictive control system based on model predictive control comprises an upper-layer traditional predictive control module, a sensor and a lower-layer real-time feedback correction module, wherein the input end of the upper-layer traditional predictive control module and the input end of the lower-layer real-time feedback correction module are respectively connected with the output end of the sensor, the input end of the sensor is connected with the output end of a controlled object, the upper-layer traditional predictive control module is connected with the lower-layer real-time feedback correction module, the output end of the lower-layer real-time feedback correction module is connected with the input end of the controlled object, and at every control moment, the lower-layer real-time feedback correction module can correct an optimized control quantity sent by the upper-layer traditional predictive control module and send the corrected optimized control quantity to the controlled object. The layering predictive control system and method based on model predictive control guarantee the control performance of a controller, popularize the application of a predictive controller to part of rapid systems, and have practicability and application value.

The invention relates to a safety brake and redundancy control system of a mine hoist. Detection signals of a roller rotation speed sensor and a motor rotation speed sensor are input into a speed redundancy detector, the processed detection signals are input into a speed signal comparer, compared with a command signal, and then input into a speed closed-loop controller, the speed closed-loop controller transmits the signals to a pressure signal comparer and a pressure feed-forward controller, the pressure signal comparer compares a signal of a pressure sensor and an output signal of the speed closed-loop controller, a comparison result is input into the pressure speed closed-loop controller, and a signal of the speed closed-loop controller is input into an adder through a switch to form a control signal of a tee proportional depressurization valve; and when the pressure sensor is cut off, the output signal of the speed closed-loop controller is input into the adder after being processed by the pressure feed-forward controller, and an output signal of the adder controls the tee proportional depressurization valve, so that the braking torque is controlled. The safety brake and redundancy control system is high in control precision and response speed, and the mine hoist can brake at constant retarded velocity.

The invention relates to a voltage control method for electric system basing on soft division. The method comprises: real time data gathering in electrical network; partition online; establishing CSVC mathematical model for control area; calculating the control quantity of each CSVC mathematical model; outputting the control quantity of each control area; returning to circulating for CSVC controlling when the CSVC control cycle time out.

A correction method of the output torque of a permanent magnet synchronous motor affected by temperature is disclosed. The method calibrates the motor at the normal temperature and the lowest and highest working temperatures of motor operation, the dq-axis currents of the motor under the three temperature conditions are obtained, and the unique combination of dq-axis current i<d> and i<q> of the motor falling on a motor MTPA curve is obtained by looking up a table according to the expected value of the motor output torque as the expected value of the DQ-axis current of the motor vector controlsystem, thereby correcting the motor output torque. The method corrects the permanent magnet flux linkage of the motor rotor affected by temperature so as to achieve the purpose of compensating the motor output torque, the algorithm is simple and the load rate of a vehicle-mounted controller single-chip microcomputer does not need to be improved, and the control performance of the whole vehicle is ensured.

A tarpaulin bow cover system for vehicle such as lorries or trailers includes a number of U-shaped bow members which cover the width of a loading platform of the vehicle and for opening or closing the cover by means of rollers or roller trolleys can be displaced in the longitudinal direction of the loading platform along running or guide rails positioned along the two lateral sides of the loading platform. When the cover system is closed the bow members on their bow elements, which define an upper limit, support a tarpaulin which covers the loading platform or the loading area of the vehicle. A first terminal bow member is immovably fixed to a face end of the loading platform and a second mobile terminal bow member is assigned to at least one fixing or locking device which is positioned at the other end of the loading platform. At least one U-shaped auxiliary bow member, which can be pivoted in a limited angular area about an axis of articulation parallel to the plane of the bow member, is arranged at the level of the bow member and the length of the legs of the auxiliary bow member is greater than the distance between the axis of articulation and the bow element of the corresponding bow member.

A method and apparatus provide security for a network-connected vehicle (or other networked environment) in which a predefined set of permitted operations relating to protected resources can be initiated remotely from elsewhere in the network, while security is maintained for the protected resources (for example, an engine performance optimisation control unit or air conditioning control unit within a vehicle) by preventing remote initiation of any other operations on a data processing unit which is connected to the protected resources. One of a pair of gateway components runs on each of two data processing units within the vehicle (or other environment), the first processing unit being connected to the vehicle's device control units and the second processing unit being connected to the external network. The gateway components control the types of communications which can be passed from the network-connected side to the first processing unit such that only permitted operations can be requested and no unauthorised operations can be initiated remotely.

A system for verifying the integrity of unmanned aerial vehicles (UAVs), which is configured to reside in a UAV and interface with both the communications system of the UAV and the UAV's software and hardware resources. The UAV may be configured to execute firmware that obtains a serial number or unique identifier of hardware and software on the UAV, creates a hash code combination of such unique identifiers, encrypts the hash code, transmits the encrypted hash code over a wired or wireless communications system to another computer which maintains a table of the certified codes of each UAV which results in the computer authenticating the specific UAV (or not). The system also may determine whether a specific UAV's hardware or software has been changed since the UAV was last certified.

Provided is a method for monitoring the pouring and rolling construction quality of a roller compacted concrete dam in real time. Monitoring terminals installed on a leveling machine and a rolling compaction machine respectively are used for acquiring coordinates of the leveling machine and coordinates of the rolling compaction machine in real time, and performing real-time correction on the current coordinates of the leveling machine and the current coordinates of the rolling compaction machine, and an exciting force induction device in the corresponding monitoring terminal is used for acquiring the vibration state of the rolling compaction machine in real time; the corrected coordinates of the leveling machine, the corrected coordinates of the rolling compaction machine, the exciting force state of the rolling compaction machine and current time are sent to a remote database server through a wireless network; the remote database server is used for analyzing and processing real-time data in real time; the travelling track of the leveling machine and the travelling track of the leveling machine are dynamically drawn on a client in real time and displayed in real time; fifth, the remote database server judges whether construction parameters meet the control standard of construction quality or not; after construction of a monitored storehouse ends, and graphical reports are generated on the client and display the construction quality condition of the construction layer of the monitored storehouse. The method can improve the construction quality control level and the control efficiency of the dam.

An instrument, particularly a medical endoscopic instrument or technoscope, includes a shank (2) and an instrument head (6). The instrument head includes at least one joint part (12) articulated on the distal shank end in an angularly bendable manner and a tool carrier (14) which at the distal side is articulated on the joint part (12) in an angularly bendable manner in the angular bending plane of the joint part (12). A toothing is meshed with a toothed body (26) rotatably mounted in the shank (2) and is coupled in movement to a pull cable pair for the movement control of the instrument head (6). The toothing is formed at the proximal end of the joint part (12).

Based on a difference (ΔFb) between a target value (Fbt) and an actual value (Fba) of a friction member force for pressing a brake disc, a feedback energization amount (Ipt) is calculated using a proportional gain smaller than an ultimate sensitivity gain. If ΔFb falls within a fluctuation range of torque ripple, a first compensation energization amount (Ibt) is calculated using a proportional gain larger than the ultimate sensitivity gain, and if ΔFb falls outside the fluctuation range, the first compensation energization amount (Ibt) is calculated to be constant. A second compensation energization amount (Ift) is calculated based on a calculation characteristic that is preset based on a torque fluctuation over a predetermined range of an electric motor position and based on an actual position of the electric motor. An indication energization amount calculated according to Fbt is adjusted by Ipt, Ibt, and Ift to calculate a target energization amount.

A vehicle drive shaft includes: a first shaft portion, having a core shaft portion and a sleeve shaft portion coaxially arranged at one end, and a second shaft portion, having a spline hole portion and a second engagement protrusion at one end. A spline shaft portion and a first engagement protrusion are provided at distal ends of the core shaft portion and sleeve shaft portion. The spline hole portion is nonrotatably fixed to the spline shaft portion. The second engagement portion contacts the first engagement portion when a relative torsion allowable angle therebetween is larger than or equal to a gap. When the relative torsion allowable angle is smaller than the gap, torque is transmitted via the core shaft portion. When the relative torsion allowable angle is larger than or equal to the gap, torque is transmitted via not only the core shaft portion but also the sleeve shaft portion.

An electronic controller for a brake system of a motor vehicle, having at least one interface to a control element, in particular a parking brake control switch, and at least two drive circuits for electric parking brake actuators. The electronic controller at least two independent arithmetic units, which are directly connected to each other via a data bus. A motor vehicle equipped with a controller according to the invention requires no transmission lock in an automatic gearbox.

An auxiliary injection is carried out at an in-cylinder temperature at which a premixed combustion by the auxiliary injection is separatable into a low-temperature oxidation reaction and a high-temperature oxidation reaction, in a compression self-igniting internal combustion engine in which fuel injected into a cylinder from a fuel injection valve combusts in the cylinder, and that is configured to carry out an operation of fuel injection from the fuel injection valve. The operation of fuel injection includes at least a main injection and the auxiliary injection. The main injection causes a combustion mainly including a diffusion combustion in the cylinder. The auxiliary injection is carried out prior to the main injection and causes a combustion mainly including the premixed combustion in the cylinder. Specifically, an in-cylinder gas temperature (750K) is used as a reference, and the auxiliary injection is carried out before the in-cylinder gas temperature reaches 750K, so as to separate the low-temperature oxidation reaction and the high-temperature oxidation reaction from one another. This control makes the premixed combustion slow before a compression top dead center is reached, and ensures control of the premixed combustion in a temperature controlled manner in accordance with the transition of the in-cylinder gas temperature. This ensures unambiguous determination of the injection time of the auxiliary injection based on the in-cylinder temperature, and facilitates the attempt to simplify the fuel injection control.

The invention discloses a general miniaturization digital electric steering engine controller and a control method thereof. The general miniaturization digital electric steering engine comprises a signal conditioning module, an AD sampling module, a parallel-to-serial module, a steering engine algorithm module, a serial-to-parallel module, a steering engine driving control module, a steering engine driving module, a displacement detecting circuit and a current detecting circuit, wherein the displacement detecting circuit and the current detecting circuit output analog position signals and analog current signals of m steering engines, and m is greater than or equal to 2; one channel of serial position signal, one channel of serial current signal and one channel of serial instruction signal are obtained by the signal conditioning module, the AD sampling module and the parallel-to-serial module and are fed into the steering engine algorithm module; the steering engine algorithm module is used for performing position and current double closed loop control on a steering engine drift angle and outputting one channel of serial control signal; and the serial control signal is converted into m channels of parallel control signals required by the steering engine through the serial-to-parallel module and the parallel control signals are outputted to the steering engine driving control module; and the steering engine driving control module and the steering engine driving module drive a motor to rotate. The general miniaturization digital electric steering engine controller and the control method thereof disclosed by the invention are high in control speed and stability.

Leukemia Inhibitory Factor (“LIF”), an LIF analogue, an LIF mimetic and a product capable of stimulating the expression of endogenous LIF, and mixtures thereof are useful, for (i) promoting the multiplication, in vitro, of a population of human skin stem cells and / or epidermal progenitors while maintaining them in an undifferentiated state, and / or for (ii) maintaining and / or increasing their capacity to generate a pluristratified epithelium, in particular a pluristratified epidermis and / or all or some of the skin appendages; also a library or a culture of human undifferentiated skin stem cells and / or epidermal progenitors is obtained in the presence of LIF, as are reconstructed epidermides and / or reconstructed skin, and kits for producing libraries of cells or reconstructed epidermides, and stem cells or reconstructed epidermides are prepared for the treatment of individuals exhibiting damaged skin (individuals suffering from third degree burns and individuals suffering from genetic diseases affecting the skin).

The invention discloses a control strategy based on a high-frequency link AC-DC matrix converter (HFLMC). Both the grid side and the DC side adopt a double closed-loop control strategy including a direct power outer loop and a current inner loop, and an H-bridge converter at the DC side and a three phase-single-phase matrix converter (MC) at the grid side share the power outer loop. Firstly, basedon conservation of input and output power, the power outer loop is a direct current selective control loop, the power outer loop outputs an active current instruction value, and an MC modulation signal is obtained by means of feedforward decoupling via the current inner loop; secondly, the DC side current instruction value calculated by the power outer loop is compared with a detection value, andthe modulation pulse of the H-bridge converter is output via a current regulator; and finally, the direct control of the grid side and DC side current is realized. The DC side current is enabled to have small ripple, the grid side can realize unit power operation, and the DC side can realize constant power, constant voltage and constant current operation, which enables the control strategy to beapplicable to battery charging and energy storage of electric automobiles.

A first line passing through a coordinate point which represents the light-source color of ambient light is drawn so as to cross a line segment connecting two coordinate points which points respectively represent colors of light emitted from the two light-emitting sources. An image of a subject is captured while light is emitted from the two light-emitting sources toward the subject in such a manner that the volumes of light emitted from the two light-emitting sources respectively correspond to those represented by a predetermined point which is, or close to, the intersection point of the first line and the line segment on the basis of the intersection point and light volume information. A White Balance adjustment correction value is obtained on the basis of light volume information with respect to the two light-emitting sources, the predetermined point, and the point representing the light-source color.

The invention provides an H infty load frequency control method based on a buffer type event triggering scheme for a power system under spoofing attack. The H infty load frequency control method includes the steps: S1, analyzing a load frequency control problem of a power system secondary frequency conversion and primary frequency conversion involving an electric vehicle, and establishing a stateequation of a system model; S2, designing a buffer type event triggering mechanism, establishing a controller under a delay condition, and establishing a network system model state equation of the presence controller according to S1; S3, designing the conditions of occurrence of the spoofing attack, and establishing a state equation of the network control system model according to S2; and S4, calculating the sufficient condition for near-stability of mean square for the network control system in S3, and implementing system load frequency control. In the same network environment and under the same spoofing attack, compared with a traditional method, the H infty load frequency control method based on a buffer type event triggering scheme for a power system under spoofing attack can help thesystem resist stronger spoofing attack, has the advantages of low overshoot and short stable time, and can obtain better control effect.

The invention relates to a method for diagnosing and processing a fault of a throttle position sensor. The method adopts that: when an engine idles, a throttle position sensor signal acquired by the ECU judgment is compared with a sensor signal; and if the throttle position sensor is judged to be faulty, an engine control unit executes an emergency measure to carry out emergency processing on vehicles. The method can detect the situation of the fault of the throttle position sensor in time to ensure driving safety of the vehicles.

An air-fuel ratio control system for an internal combustion engine having a catalyst provided in an exhaust system of the engine for purifying exhaust gases and a first oxygen concentration sensor disposed upstream of the catalyst is disclosed. The air-fuel ratio control system controls an air-fuel ratio of an air-fuel mixture supplied to the engine. A degree of response deterioration of the first oxygen concentration sensor is detected. A response delay of the first oxygen concentration sensor is compensated according to the detected degree of deterioration to calculate a compensated sensor output. The air-fuel ratio is controlled so that a detected air-fuel ratio calculated from the compensated sensor output coincides with a target air-fuel ratio. A frequency characteristic of the compensation is adjusted according to the detected degree of deterioration.

A motor-adjustable steering column including a supporting unit which is connectable to a vehicle body and by which an actuating unit is held which includes a steering spindle mounted in a casing unit to be rotatable about a longitudinal axis. The casing unit has an outer casing tube, in which an inner casing tube is accommodated to be axially displaceable telescopically in the direction of the longitudinal axis. An actuating drive is connected to the inner casing tube and the outer casing tube by which the inner casing tube may be displaced axially in and out relative to the outer casing tube. A feature arranged between the outer casing tube and the inner casing tube generates a frictional force between outer casing tube and inner casing tube with regard to relative displacement which is adjustable between a release position and at least one friction position.

An effective control mechanism for a socket wrench that is capable of safe, high efficiency, high strength torque control while eliminating the problem of losing control due to improperly applied external force. The control mechanism includes a handle, a socket, an inner rotor, a C-washer, a ring spacer, a dialer, left and right auxiliary positioning levers, a control, a spring, a lid, a roller, and an elastic member; wherein an end of the handle includes a segment channel to accommodate the socket and the inner rotor, the socket includes one or multiple elastic member and one or multiple roller in relation to the segment channel, and multiple locking holes being provided on the recessed surface of the end of the handle for installation of both of the left and the right auxiliary positioning levers and the spring.