671results about "Control without using feedback" patented technology

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.

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.

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.

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 process contains the following steps:

• • entering a teaching mode,
  • defining and recording zero, one or two limit of travel positions,
  • exiting the teaching mode,
  • determining the number and the type of the limits of travel produced by end stops,
  • if there exists at least one limit of travel produced by virtue of an end stop, detecting and recording the position of the end stops.

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 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.

The invention provides automatic control device and method of a rotary chute pair transmission tilt angle of a blast furnace bell-less top for automatically controlling the tilt angle of a chute. The automatic control device comprises information collection equipment, a PLC control system and transmission equipment, wherein the information collection equipment is used for collecting the tilting angle position information of the chute and the position information of the chute and transmitting the information to the PLC control system; the PLC control system is used for analyzing the information collected by the information collection equipment, generating a control signal and transmitting the control signal to the transmission equipment; and the transmission equipment is used for controlling the tilting angle of the chute according to the control signal of the PLC control system. The device and the method eliminate the influence brought by deviations caused by the angle alignment control of the stroke of a chute pair transmission tilt angle drive linear oil cylinder on the material distribution of the blast furnace, sufficiently give play to the ideal material distribution superiority of the bell-less material distributor and guarantee the stability of a smelting process. In addition, the invention can prevent the frequent switchover of an electromagnetic directional valve of the chute pair transmission tilt angle drive linear oil cylinder and keep the stable output characteristics of a hydraulic system.