680results about "Control without using feedback" patented technology

The invention provides a solar tracking system for controlling the alignment of an instrument with respect to the sun, the instrument having a solar radiation receiver and a solar radiation collector for collecting solar radiation and directing the radiation towards the receiver, the system having: at least first and second detectors locatable so as to move with the receiver and receive radiation from the collector, for generating respective first and second output signals according to their respective exposure to solar radiation from the collector; a comparison means for comparing the first and second outputs and producing a comparison signal indicative thereof; and control means for controlling the alignment of the instrument according to the comparison signal.

Powered retractable vehicle step assist systems and methods are provided. The steps systems are configured for installation (e.g., after market installation) and use with a vehicle. The system can include a stepping member movable between a retracted position and a deployed position with respect to the vehicle. The system can further include a vehicle interface configured to electronically communicate with an existing communication bus of the vehicle, such as through a connection with an existing electronics port of the vehicle. A controller of the step system can be configured to process information received from the vehicle interface and, based at least partly on the processing of the information, cause movement of the stepping member between the retracted position and the deployed position.

The machine (10) has a forward viewing camera and infrared sensors to avoid ground objects and a vertically viewing camera (14) with a fisheye lens which interprets data from ceiling (33) mounted transmitters (31) to guide it over the cleaning path.

The invention relates to a control method of alternative pressure of side guides of a hot strip mill coiler, the driving side and the operating side of the side guides are alternatively controlled by adopting a position model and a pressure model, and the technical scheme of controlling by the prior position model only is changed. The invention greatly reduces the pressure oscillation at two sides of the side guides because of alternative pressure control, obviously reduces the convolute movement defect, can adapt to the coiling of various thick and thin specifications of band steel, and can lead the pressure at two sides of the side guides to keep consistently balance, thereby ensuring the symmetry of the abrasion of the two side guides.

The invention relates to a light-gathering wind and light complementary power station with an automatic sun tracking function and a maximum power point tracking function, which comprises a light-gathering device, a photovoltaic cell array device, a tracking driving device, a photovoltaic controller with a maximum power point tracking function, and a wind generating set, wherein the light-gathering device and the photovoltaic cell array device comprise a frame consisting of a Fresnel lens light-gathering device array and a photovoltaic cell array respectively; the tracking driving device comprises an intelligent control system for driving the light-gathering device and the photovoltaic cell array device to move in a sun-tracking manner, and a mechanical control and transmission device; the photovoltaic controller with the maximum power point tracking function consists of a voltage sampling circuit, a current sampling circuit and a microprocessor in which a multiplier and a comparator are arranged; and the wind generating set consists of a wind-driven generator and a wind turbine controller. The light-gathering wind and light complementary power station has high automation degree, light weight and high photoelectric conversion efficiency. By adopting the photovoltaic controller with the maximum power point tracking function, the investment cost of photoelectric power generation can be greatly lowered, and the power generating efficiency is greatly increased.

A control method for automatic leveling system in automatic control technology field comprises steps of: automatically protruding transverse support legs in turn; automatically protruding vertical support legs to touchdown in turn; automatically lifting the vertical support legs to take off from ground in turn; stopping the vertical support legs; estimating a lowest leg according to alpha, beta angles in X, Y directions respectively, calculating leveling effect parameter; executing rough leveling if s>Psi1; executing accurate leveling if Psi2<=s<=Psi1; stopping the leveling if s F16M 3 / 00 G05D 3 / 10 2 7 3 2008 / 5 / 22 101280875 2008 / 10 / 8 000000000 Shanghai Jiao Tong University Shanghai 200240 Weng Xinhua Tang Junmao Kong Zuo Wu Changmao Gan Zhimei wangti lin wanggui zhong 31201 The Patent Agency of Shanghai University of Communications No.1954 Huashan Road, Shanghai 200030

A method and apparatus for controlling a particular vehicle function, for example the adjustment of a vehicle seat, using a graphical user interface (GUI) is provided. The GUI is activating by toggling a control, switch intuitively linked to the particular vehicle function. The control switch is separate from, and not proximate to, the GUI. When the GUI is activated by toggling the control switch, a control screen specific to the particular vehicle function is displayed on the GUI.

The present invention relates to a machine arranged for sawing micro trenches and placing ducts / communication cables in micro trenches, said machine comprising a saw blade arranged for sawing a micro trench in an area; said machine further comprises a stabilizing device arranged for stabilizing the walls of said micro trench when placing ducts / communication cables into said micro trench, said stabilizing device being positioned immediately behind said saw blade in said micro trench, and said stabilizing device comprising guiding means for guiding at least one duct / communication cable when placed into said micro trench.

In a movement control apparatus manipulation can be carried out while watching the movement of the moving body, without needing to watch one's hands, so even a novice operator can perform the manipulation easily, safely, reliably, and quickly. The apparatus can include a signal transmission cable, a casing of a manipulation remote controller disposed at one end of the cable, a rotary encoder that produces a signal corresponding to the direction of the casing, and a motor drive control circuit that is disposed on the other side of the cable and controls the movement of a moving body on the basis of a signal corresponding to the direction of the casing. The signal corresponding to the direction of the casing can be supplied from the rotary encoder, through the cable, to the motor drive control circuit. Therefore, the operator can hold down a manipulation switch without looking at his hands and thereby adjust the direction of the casing of the manipulation remote controller while looking at the movement direction of a load.

A full-automatic prestress stretching machine is composed of a control assemblage consisting of jack driven by oil pump, force sensor, displacement sensor and stretching unit, and electromagnetic valve in the oil channel of oil pump and controlled by said control assemblage. Its advantages are high stretching precision (1%), and high automation and digitalization level.

An active vehicle ground effect system having at least one guiding piece coupled to an undercarriage of a vehicle, where the at least one guiding piece has a configuration to guide an airflow between the undercarriage of the vehicle and a ground while the vehicle is moving. The active vehicle ground effect system has an actuator coupled to the at least one guiding piece. The system has a controller configured to activate the at least one guiding piece from a first position to a second position when an activating condition is met. When a deactivating condition is met, the controller deactivates the at least one guiding piece by moving the at least one guiding piece from the second position to the first position.

Powered retractable vehicle step assist systems and methods are provided. The steps systems are configured for installation (e.g., after market installation) and use with a vehicle. The system can include a stepping member movable between a retracted position and a deployed position with respect to the vehicle. The system can further include a vehicle interface configured to electronically communicate with an existing communication bus of the vehicle, such as through a connection with an existing electronics port of the vehicle. A controller of the step system can be configured to process information received from the vehicle interface and, based at least partly on the processing of the information, cause movement of the stepping member between the retracted position and the deployed position.

The invention discloses a video perspective three-dimensional display capable of wearing on the head of a user and a control method thereof. The video perspective three-dimensional display comprises two cameras (3, 25), shutter glasses (12), a shutter glasses bracket (14) and a control device thereof, wherein, the cameras (3, 25) are fixed on the bracket, the shutter glasses (12) are fixed on the shutter glasses bracket (14), the signal output ends of the cameras (3, 25) are connected with the input end of the control device, the output end of the control device is connected with the signal input end of the shutter glasses (12), and the cameras (3, 25) are connected with a driving device (43) which can adjust mutual distance between the cameras (3, 25). The head video perspective three-dimensional display adopts the structure that a micro-step motor is used for adjusting distance between two cameras, so that the distance between two cameras is matched with the interpupillary distance of the current user so as to obtain better three-dimensional experience effects. The invention improves the experience effects of a user, avoids or lightens the unpleasant symptoms such as fatigue, dizziness and the like caused by that the interpupillary distance between two eyes of a user is inconsistent with the distance between two cameras.

An automatic guided vehicle and a method for drive control enable driving of the vehicle with a coordinate system, while using designation of a movement position by address. The automatic guided vehicle measures a surrounding state by a laser, performs matching between map data and measurement data obtained by the measuring to obtain the current position, and runs, following preset route data, based on the obtained current position. The vehicle includes a data memory that stores correspondence information between addresses of certain positions in a drive area where the vehicle runs and coordinates that are set in the drive area, and a processing section that, when a movement target position is designated by address from a host computer, transforms the designated address into coordinates, based on the correspondence information between addresses and coordinates, and drives the vehicle, following the route data to the coordinates corresponding to the address.

An unmanned aerial vehicle (UAV) ground station, comprising: a landing surface having a perimeter and a center; a plurality of pushers held above the landing surface by a plurality of linear actuators; at least one electro-mechanical connector attached to one of the plurality of pushers, mechanically adapted to be electrically connected to a compatible electro-mechanical connector of a UAV; and a landing detection controller adapted to instruct the plurality of linear actuators to move the plurality of pushers simultaneously from the perimeter toward the center when a landing event related to the UAV is detected.

The invention belongs to the technical field of optical precision measurement, which relates to a fast testing device of three-dimensional dimensions of the shape of tiny objects based on a liquid zoom lens. The invention comprises a two-dimensional translation table, a tested object, a liquid zoom lens, a limited conjugate objective lens, a focusing lens, a CCD vidicon, an image collection module, a computer and a liquid zoom lens controller. The tested object is put on the two-dimensional translation table, and images are formed on a sensitizing image surface of the CCD vidicon via the liquid zoom lens, the limited conjugate objective lens and the focusing lens. The CCD vidicon is connected with the computer by the image collection module, and the computer is connected with the liquid zoom lens by the liquid zoom lens controller. The invention applies the liquid zoom lens to the fast testing of the three-dimensional dimensions of the shape of the tiny objects, and the measuring speed and the service life of the testing device are improved because no mechanical moving parts are arranged in an optical system of the testing device. The invention can be used for fast testing three-dimensional dimensions of shapes in fields like mechanical processing, MEMS, microelectronics, biological medicine, etc.

The invention discloses a self-adaptive control method for diagonal gait of a four-footed robot, which is used for self-adaptively controlling the walking of the four-footed robot in the nonstructural terrain with the diagonal gait. The self-adaptive control method bases on a fuzzy reasoning learning method and a foot trajectory real-time correction method and takes the diagonal gait as the motion mode so as to comprehensively control a robot body to adapt for the nonstructural environment. The gait planning is carried out on the environmental information collected by the sensor through the fuzzy reasoning learning method; the stability judgment is carried out on the gait planning information; if the planned four-footed robot has stable diagonal gait, the joint corner information is sent to a control system; if not, the supporting time of the diagonal feet is corrected by the foot trajectory real-time correction method so that the four-footed robot has better stability when walking under the changed gait in the nonstructural terrain. The self-adaptive control method is used for correcting foot trajectory planning and walking stability under changed gait when the four-footed robot walks diagonally in a dynamic way, thus realizing the self-perception, self-correction and self-adjustment of the four-footed robot.

In an aspect, a vehicle door control system for a vehicle having a vehicle body and a vehicle door is provided, and includes a check arm having an end that is mounted to one of the vehicle body and the vehicle door, a check arm holder at least a portion of which is mounted to the other of the vehicle body and the vehicle door, and a controller. The check arm holder is configured to apply at least three different amounts of braking force to the check arm. The controller is programmed to control the operation of the check arm holder based on input from at least one sensor.

The invention suitable to and aligns electronic equipment. The system includes following parts: a signal emission device in use for transmitting an alignment signal; being setup on the electronic equipment, signal receiving devices are in use for receiving alignment signal and generating a sensing signal; being connected to the signal receiving devices, a control device in use for receiving the sensed signal obtains position and direction between the electronic equipment and the signal emission device through triangulation method, as well as generates a control signal; being connected to the control device, an alignment mechanism adjusts the electronic equipment based on the control signal in order to align to the signal emission device.

A rollable display including a flexible display panel having a screen that is separated into an exposed display region and a non-exposed display region. The screen of the flexible display panel is moved using a screen driver, and a moving direction of the exposed display region is controlled to be opposite to a moving direction of the screen, to distribute the stress of pixels, without changing an absolute location of the exposed display region, and to defer degradation of the pixels.

A piezoelectric actuating drive is calibrated so that displacements or movements of its actuator output beam (4) become independent of environmental operating conditions and of piezoelectric instabilities. For this purpose an automatic determination and correlating of energizing signal values and respective displacement positions of an actuator beam (4) are performed on the basis of first sensing or measuring striking times (t1, t2) when the actuator beam (4) encounters at least one, preferably two limit stops which limit the beam displacement caused by piezoelectric action. The change of the electric capacitance of a piezostack (3) that displaces the actuator output beam (4) is measured when the beam (4) strikes a limit stop. Instead of measuring a change in the electric capacitance of the piezostack (3), electric charge impulses may be measured at the time (t1, t2) and evaluated for the correlation between the energizing control or input signal and the corresponding output beam displacement. The correlation or calibration is performed automatically by an electronic signal processing circuit when such calibration is desired in response to an operator input or it is performed automatically in response to a control program stored in a memory of the electronic signal processing circuit.

The invention discloses a device for automatically adjusting the angle of a television. By capturing scenery in a certain range before the television and identifying all users watching television programs according to the captured images, the device adjusts the television to a satisfied viewing angle for all users, and belongs to the technical field of digital home human-machine information interaction. The device comprises an infrared detection device, a photographic device, a memory unit, a central processing unit, a control module and a timer. The invention realizes the automatic angle control of the television, avoids troubles caused by manual or remote adjustment, and displays the humanization of home electronic and electrical appliances in the digital home.

The invention provides an automatic sunlight tracking system of a solar cell panel. A central processor is connected to a clock module, and is equipped with a program that controls the attitude of a solar cell panel according to the current time and the geographical direction of the system. Output signals of the central processor access an elevation angle tracking driving motor and an azimuth tracking driving motor. The two motors are connected to and drive an elevation angle rotary shaft and an azimuth rotary shaft through an upper deceleration transmission mechanism and a lower deceleration transmission mechanism respectively. The elevation angle rotary shaft is disposed on the azimuth rotary shaft. A solar cell panel support is fixed to the elevation angle rotary shaft. The bottom of the support is provided with air springs to have stabilizing and supporting effects and to resist wind. The upper and lower worm shafts of the transmission mechanisms are self-locking worms. The solar cell panel is provided with a dust collector having dust removing rollers, and the dust removing rollers roll on the cell panel and remove dust by means of the gravity. The system is also provided with a lightning protection apparatus. All parts are equipped with antirust processing layers. The system does not need a sensor. The cell panel is made to keep facing a sunlight incident direction according to the azimuth of the sun. The power generation efficiency is improved. The system is high in tracking precision, simple in structure and low in cost.

The invention provides a system for regulating an angle of a display. The system comprises a display rotating module, an image shooting module for shooting a face image, an image data processing module for processing data of the face image, and a control module for controlling the display rotating module and the image shooting module. In the system for regulating the angle of the display, the image shooting module is used for shooting the face image, and the angle of the display can be regulated according to the face image under the control of the control module, so frequent manual operation can be avoided. The invention also discloses a using method of the system for regulating the angle of the display.

The invention discloses a biaxial flexible photovoltaic tracking bracket. The biaxial flexible photovoltaic tracking bracket comprises a bracket body; the bracket is used for installing and fixing solar cell panels; the bracket is horizontally provided with multiple solar cell panel sets; the solar cell panel sets are arranged on at least two steel wire ropes; brace rods are arranged at two ends of the steel wire ropes; the brace rods can turn over along the axis of the solar cell panel sets corresponding to the bracket; an overturning mechanism for driving the brace rods to rotate is arranged on the bracket; the solar cell panel sets are composed of multiple solar cell panels; one ends of the solar cell panels are hinged corresponding to the steel wire ropes; and north and south angle adjusting mechanisms for driving the solar cell panels to rotate are arranged at the other ends of the solar cell panels. The flexible steel wire ropes are used as cell panel support beams; structural installation cannot be influenced by the position and the height; a foundation height levelling upright post does not need to be adjusted; the biaxial flexible photovoltaic tracking bracket can be used in any terrain; furthermore, the span can be increased by above 10 m; and thus, installation and use requirements of multiple scenes can be satisfied.

The invention relates to a device for automatically adjusting a display angle. The device comprises a camera, a television IC (integrated circuit), a control module and a rotating mechanism. The device is characterized in that: a user starts the function through a shortcut key on a remote controller; after the function is started, the IC in the television drives the external camera to acquire signals; and an MCU (micro control unit) decodes the received different signals, recovers the image of a scene, determines positions and number of persons, then calculates an optimal watching angle, and controls the rotation of the display. The device has the function of face identification or body temperature identification, can adjust the optimal watching angle according to the positions and number of the watching persons, is more humanized, only needs the remote controller to control the switch, has high automation degree, and is convenient to control. The device can be widely applied to a display product such as a liquid crystal television, a computer integrated machine and the like, and has good use value.

The invention discloses an azimuth control apparatus, photovoltaic power generation equipment, a microgrid system and a control method. The microgrid system comprises the photovoltaic power generationequipment, an energy storage system, a concentrated controller and a gateway apparatus, wherein the photovoltaic power generation equipment is used for converting the received optical energy into electric energy, and the electric energy is used for supplying power for a load or being connected to a mains supply network, wherein the light receiving surface of a photovoltaic array of the photovoltaic power generation equipment can track the sun direction according to the calculated sun trajectory so as to receive more illumination as far as possible; the energy storage system is used for performing storage, regulation and control on the electric energy generated by the photovoltaic power generation equipment; the concentrated controller is used for monitoring the operating conditions of various equipment in the microgrid system and controlling equipment operation according to the monitored results; and the gateway apparatus is used for enabling the microgrid to be connected to the mainssupply network or to be disconnected from the mains supply network according to indication of the concentrated controller. By virtue of the microgrid system disclosed in the invention, power generation efficiency and intelligent degree can be improved.

A solar installation is described. It has a solar element and a diffractively and / or refractively operating optical apparatus by way of which the incident sunlight is passed directedly perpendicularly on to the solar element. The optical apparatus is caused to track the position of the sun by way of a tracking device.The optical apparatus uses a light-deflecting foil having portions of different natures with a structure having a different optical action. By virtue of the action of the tracking device the holographic foil is moved relative to the solar element so that different portions of the foil move into an operative position above the solar element in succession during the tracking procedure.