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69results about How to "The adjustment result is accurate" patented technology

Flicker regulating system

The invention discloses a flicker regulating system which resolves the problems that an existing structure is complex and hardware cost is high. The flicker regulating system comprises a test unit which comprises a photoelectric converter and a signal processing unit connected with the photoelectric converter, and the test unit is used for measuring and outputting test signals relevant to flicker of a screen to be tested. A master controller comprises a receiving module, a regulating command generating module and a regulating command output module, wherein the receiving module is used for receiving the test signals, the regulating command generating module is used for analyzing and processing the test signals according to preset programs and generating regulating commands, and the regulating command output module is used for outputting the regulating commands into the screen to be tested to control regulation of Vcom voltage in the screen to be tested. The flicker regulating system has the advantages of being simple in structure, low in cost, easy and convenient to realize, and wide in application range.
Owner:HISENSE VISUAL TECH CO LTD

Display panel gamma curve adjusting method and device

The invention discloses a display panel gamma curve adjusting method and device; the method comprises the following steps: sampling images for the display panel when the common electrode voltage of the display panel is a preset voltage, thus obtaining sample images of different color channels; respectively measuring an output brightness value of each sample image; calculating the present gamma value of the display panel according to the output brightness value of each sample image; finally, when the difference between the present gamma value and a preset gamma value is greater than a preset error threshold, calculating a compensation value of the present gamma curve of the display panel according to the difference, and adjusting the present gamma curve of the display panel according to thecompensation value. The method can measure the real gamma curve value without searching the optimal gamma voltage algorithm and detecting a gamma chip, thus reducing the gamma curve adjusting time inthe panel production process, more accurately adjusting the panel gamma curve, and greatly improving the display panel production efficiency.
Owner:HKC CORP LTD +1

Pesticide spraying method and system

The invention discloses a pesticide spraying method and system. The method comprises the steps that the actual wind speed of flight position of an airplane is obtained; the position of the airplane is obtained, wherein the position of the airplane comprises the flight height and latitude and longitude coordinates of the airplane; the actual landing point of pesticide is calculated according to the actual wind speed and the position of the airplane; the actual landing point of the pesticide is the actual landing position of the pesticide affected by wind power; the landing point offset of the pesticide is calculated according to the actual landing point of the pesticide, wherein the landing point offset of the pesticide is the deviation of the actual landing point relative to a planned landing point, and the planned landing point is the position where the pesticide landed under the windless condition; a flight path of the airplane is adjusted according to the landing point offset of the pesticide, and the landing point offset of the pesticide is smaller than a set threshold value. According to the technical scheme, by means of the mode of calculating the effect of wind so as to change the flight path, it is guaranteed that the pesticide can land on a predetermined region, and waste of the pesticide is reduced.
Owner:JIANGXI TIANXIANG GENERAL AVIATION CO LTD

Pressure control method of hydrogen production system and hydrogen production system

PendingCN113604840AImprove pressure control efficiencyImprove controlElectrolysis componentsSystem pressureProcess engineering
The invention discloses a pressure control method of a hydrogen production system and the hydrogen production system, and is applied to the technical field of hydrogen preparation, wherein the pressure control method comprises the steps: after acquiring a parameter value variable quantity of a target electrical parameter and a pressure difference value between a current system pressure and a preset pressure threshold value, determining a first regulating quantity according to the parameter value variable quantity; and determining a target regulating quantity based on the first regulating quantity and the pressure difference value, and finally regulating the system pressure of the hydrogen production system according to the target regulating quantity. The target electrical parameter is related to the hydrogen production power of the hydrogen production system, the system pressure of the hydrogen production system can be directly influenced by the hydrogen production power fluctuation, and the pressure change occurs after the hydrogen production power fluctuation, so that the regulating quantity can be determined in advance before the hydrogen production power finally influences the change of the system pressure, the pressure control efficiency is effectively improved, the energy consumption is reduced, and the control effect is improved.
Owner:阳光氢能科技有限公司

Control method and control device for incident light intensity

The invention discloses a control method and a control device for incident light intensity. The control method and the control device for the incident light intensity are used for solving the problem that no better shading method is available inside a vehicle in the prior art. The control method for the incident light intensity comprises the following steps that position information of a target object is obtained; the intensity of reflected light reflected through the target object is detected; if the reflected light intensity is greater than a preset threshold value, a corresponding light transmitting area is determined according to the position information; and transparency of the light transmitting area is adjusted to reduce the intensity of incident light which is emitted onto the target object through the light transmitting area. The invention further discloses a corresponding control device for the incident light intensity.
Owner:LENOVO (BEIJING) CO LTD

Tool setting device

The invention discloses a tool setting device. A first height adjusting block and a second height adjusting block are arranged in a knife adjusting body, and the first height adjusting block and the second height adjusting block are in contact with each other through a slope; the second height adjusting block is provided with a tool clamping clamp, wherein the tool clamping clamp is used for clamping a lathe tool, the adjusting device is used for adjusting the position of the first height adjusting block to enable the first height adjusting block to move transversely, the first height adjusting block drives the second height adjusting block through the contact of the first inclined surface and the second inclined surface, the inner wall of a cutter adjusting body is used for transversely limiting the second height adjusting block, the second height adjusting block moves upwards, the tool clamping clamp drives a turning tool to move upwards along with the second height adjusting block to be equal to the rotating axis of the main shaft of a numerical control lathe, and the tool setting work is realized. According to the tool setting device, an inclined surface sliding block mechanismis used as a precise tool setting device of a tool height adjusting mechanism, so that the tool height error is reduced, the machining precision is improved, and the great significance is provided for guaranteeing the machining quality of parts.
Owner:SUZHOU INST OF INDAL TECH

Traction optimization method suitable for trolley vehicles

ActiveCN109229119AImprove adaptabilitySuitable for operation needsLocomotivesMaximum torqueConstant power
The invention discloses a traction optimization method suitable for trolley vehicles, which comprises the following steps: initializing the starting acceleration of the tram, the starting speed of a constant power characteristic region and the starting speed of a reduced power characteristic region; According to the starting acceleration, the initial speed of constant power characteristic zone andthe initial speed of reduced power characteristic zone, the traction characteristic curve of tram is drawn. The optimal traction characteristic curve of the tram is obtained by optimizing the traction characteristic curve with the starting acceleration constraint, the residual acceleration constraint, the maximum torque constraint, the maximum power constraint and the average acceleration constraint. Otherwise, the process proceeds to step S3. A technical scheme of that invention aim at solving the problem that the traction scheme of the EMU is directly applied to the tram due to the existence of the running vehicle clothes between the EMU and the tram at present, An optimization algorithm for tram traction is specially designed, which reconstructs the constraint interval of tram and optimizes the tram traction.
Owner:CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP +1

Structure for adjusting separation distance of knocking-over bars of two-needle-bar warp knitting machine

The invention discloses a structure for adjusting a separation distance of knocking-over bars of a two-needle-bar warp knitting machine. Looping parts of the two-needle-bar warp knitting machine include a swing shaft, a swing shaft seat, a swing arm and the knocking-over bars. The knocking-over bars are installed on the swing shaft seat, the swing arm is installed on the swing shaft, the swing shaft is fixed to the swing shaft seat, and the swing shaft seat is fixed to a box body. The structure for adjusting the separation distance of the knocking-over bars comprises a support, a seat board, a lead screw, a graduated disc, a handle and a pointer and is characterized in that the handle is connected with the lead screw, one end of the lead screw is installed on the support through a lead screw nut, the other end of the lead screw is connected with a seat plate, the graduated disc is fixed to the seat late, and the separation distance of the knocking-over bars can be known through the graduated disc and the pointer. The seat plate is fixed to the swing shaft seat along a needle bed in a full-width transverse spanning mode, and the support is arranged on one side of the swing shaft seat and fixed to the box body. The structure for adjusting the separation distance of the knocking-over bars is driven by adopting a screw mechanism, converts rotating motion of the lead screw into linear motion and is simple in structure, convenient to operate and high in working efficiency.
Owner:FUJIAN XIN GANG TEXTILE MACHINERY

Signal transceiving method in a broadcast multicast system and equipment

The invention relates to the field of wireless communication, discloses a signal transceiving method in a broadcast multicast system and equipment and is capable of solving the problems of AGC gain error saturation of UE and desynchronizing caused by no broadcast multicast service data issuing, as well as saturation distortion caused in signal recovery, etc. In the invention, when the broadcast multicast service data is not issued, an SB signal is transmitted through FACH. In TTI without issued MBMS service data, the MBMS time slot of each radio frame transmits the SB signal, or the SB signal is transmitted only at the MBMS service time slot of a first radio frame. Under the condition that no MBMS service data is issued in a plurality of continuous TTIs, the SB signal can be transmitted only in the first one of the continuous TTIs. And all NodeBs belonging to one single frequency network can adopt the same rule to transmit the SB signal.
Owner:SPREADTRUM COMM (SHANGHAI) CO LTD

Photovoltaic cell panel night cleaning scheme automatic generation method based on visual perception

InactiveCN112232532AGood nighttime dirty cleaning jobWill not affect power generationCharacter and pattern recognitionDesign optimisation/simulationCells panelProcess engineering
The invention provides a photovoltaic cell panel night cleaning scheme automatic generation method based on visual perception, and the method comprises the steps: collecting a photovoltaic cell panelimage in the evening and the morning of the next day through an unmanned plane; processing the cell panel images to obtain the dirt level and the dirt distribution condition of each cell panel and thedirt distribution conditions of all the cell panels, and establishing a cleaning model according to the dirt level corresponding to the images collected in the morning, the dirt distribution condition of each photovoltaic cell panel and the overall dirt distribution conditions of all the cell panels; and then obtaining evaluation coefficients according to information such as dirt grades and dirtdistribution obtained by processing the battery panel images collected at dusk and morning, and adjusting the cleaning model according to the evaluation coefficients to obtain the cleaning speed, therotating brush rotating speed and the cleaning times of the cleaning robot. The related parameters of the cleaning robot can be adjusted according to the cleaning effect of the cleaning robot, so thatthe cleaning effect of the cleaning robot is better.
Owner:孙猛猛

Data writing method and apparatus in distributed system

ActiveCN107491264AReduce glitch rateAdapt to the actual situationInput/output to record carriersPerformance indexData request
The present application discloses a data writing method and apparatus in a distributed system. The data writing method comprises: after receiving a write request from a user for a first file, according to a first time interval, sequentially initiating write data requests to a plurality of writable blocks of the first file, wherein the first time interval is dynamically determined according to the performance indexes of write operations, and one write operation comprises a plurality of write data requests initiated for one write request; and when it is detected that any write data request in the sequentially initiated write data requests is successful, stopping initiating the write data request. According to the method and apparatus disclosed by the present application, the write delay glitch rate can be reduced, and the sending interval of the redundant write data request can be adaptively adjusted.
Owner:ALIBABA GRP HLDG LTD

Lamplight detection and adjustment device for headlight module of vehicle

The invention discloses a device for detecting and adjusting light of an automobile headlight module. device and a position locking mechanism for locking the position of the dimming element. The clamping mechanism includes a first clamping unit and a second clamping unit symmetrically arranged on the left and right sides of the base. The light adjusting mechanism and the position locking mechanism are both Symmetrically arranged on the left and right sides of the base, the light dimming mechanism is opposite to the dimming hole of the car light module to be tested and adjusted, the light dimming mechanism is connected to the first driving device, and the power supply mechanism is connected to the car light module to be tested and adjusted. The power sockets of the group are opposite to each other, and the power supply mechanism is driven and connected with the second driving device. Compared with the prior art, the adjustment result of the invention has high accuracy and short adjustment time.
Owner:儒拉玛特自动化技术(合肥)有限公司

Method and device for dynamically adjusting search window as well as block matching method and device

The invention provides a method and device for dynamically adjusting the size of a search window. The method comprises the following steps: computing an inter-frame relative coefficient of the current frame and a reference frame, wherein the inter-frame relative coefficient is an absolute value of difference of the summation of each point pixel value of the current frame and the summation of each point pixel value of the reference frame; and when the obtained inter-frame relative coefficient is in a first predetermined threshold value range, reducing the size of the search window as M1*N1, wherein the initial size of the search window is M0*N0; M1 is less than M0, and N1 is less than N0. Furthermore, the invention discloses a block matching method and device. By using the method and device provided by the invention, the computation amount is reduced on the premise of guaranteeing the matching accuracy.
Owner:JIANGSU DAHAI INTELLIGENT SYST

Reading method and apparatus for distributed system

The invention discloses a reading method and apparatus for a distributed system. The reading method comprises the steps of sending a data reading request to one of storage nodes corresponding to a first file after the reading request of a user to the first file is received; and when the length of time of waiting for a response reaches or exceeds a first time interval, sending a redundancy request for the data reading request to another storage node corresponding to the first file, wherein the first time interval is dynamically determined according to a performance index of reading operation. According to the method and the apparatus, a sending interval of the redundancy request for the data reading request can be adaptively adjusted.
Owner:ALIBABA GRP HLDG LTD

Simple VR mobile phone box

The invention discloses a simple VR mobile phone box, including a box body, a pupil distance adjusting mechanism and a cover plate. A rear part of the box body is provided with a mobile phone placinggroove, the box body is provided with observation windows, the box body is rotatably connected with the cover plate, the box body is provided with fixed holes, the pupil distance adjusting mechanism includes a transverse support, sliding blocks, ball screws and mirror frames, the transverse support is mounted in the box body, the sliding blocks are arranged on the transverse support and are slidably connected with the transverse support, an upper end face of each sliding block is fixedly provided with the mirror frame, the position of the mirror frame corresponds to the observation window, each ball screw includes a nut and a screw, the nut is fixedly mounted in the fixed hole, and one side of each sliding block, which faces an inner wall of a side face of the box body, is fixedly connected with the screw. When a user uses the VR mobile phone box, focal length can be adjusted according to the need, and thus an adjustment result of the focal length is more accurate. At the same time, when the user does not use the VR mobile phone box, an effect of protecting the mirrors can be achieved, and the service life of the box is prolonged.
Owner:成都众鑫聚合科技有限公司

Color consistency adjusting method for real-time video fusion

The invention relates to a color consistency adjustment method for real-time video fusion, and the method comprises the steps: (1) respectively carrying out geometric intersection calculation of a three-dimensional model for adjacent cameras through employing respective camera view cones, solving a common three-dimensional overlapping patch, and further calculating a two-dimensional projection region of the common three-dimensional overlapping patch in a corresponding image; (2) for all cameras, constructing a camera topology according to a projection area proportion relationship, and performing optimization adjustment on all camera pictures in the topology by using a chain type adjustment strategy of a color histogram to obtain an overall visual effect with consistent colors; and (3) dueto the limitation of computing resources, indicating color consistency cannot be quickly carried out on all camera pictures, so that real-time color consistency optimization scheduling is provided onthe basis of the step (2). Color consistency textures can be provided for virtual-real fusion based on video projection, a high-quality texture grid without visual splicing seams is generated, and themethod can also be used for improving the image / video splicing effect.
Owner:北京大视景科技有限公司

Fixed jig with displacement monitoring equipment

The invention discloses a fixed jig with displacement monitoring equipment. The fixed jig comprises a fixed jig body and the displacement monitoring equipment. The fixed jig body comprises a bottom plate, two buckle devices and two supporting devices. The displacement monitoring equipment comprises a longitudinal guide rail, a monitoring device and a locating device. The monitoring device comprises a pneumatic claw and a pressure sensor. The locating device moves to a preset work station to locate an automobile steering wheel position adjusting device placed on the special fixed jig body, and after the fixed jig body locks the automobile steering wheel position adjusting device, the monitoring device moves to the preset work station along the longitudinal guide rail, and the pneumatic claw grabs the top of the automobile steering wheel position adjusting device. If the steering wheel position adjusting device has slight displacement, displacement is transmitted to the pressure sensor. Therefore, the steering wheel position adjusting device can be effectively fixed, whether the steering wheel position adjusting device is effectively fixed to the fixed jig or not can be known, and then whether a testing and adjusting result is correct or not is known.
Owner:湖州奇奇机电科技有限公司

Industrial operational six-degree-of-freedom series robot

InactiveCN108274449AThe adjustment result is accurateImprove the effect of teaching demonstrationProgramme-controlled manipulatorAir pumpFeedback control
The invention discloses an industrial operational six-degree-of-freedom series robot. The industrial operational six-degree-of-freedom series robot comprises a drive tank, a base and a separation tank; a mounting frame is arranged on the side face of the interior of the drive tank; a pump seat is arranged on the upper portion of the mounting frame and provided with a Y-direction air pump; a Y-direction push rod is arranged at the end of the Y-direction air pump; displacement sensors are arranged on the outer side of the middle of the Y-direction push rod; a sealing tank is arranged at the endof the Y-direction push rod; and a motor seat is arranged on the bottom face of the interior of the sealing tank. According to the industrial operational six-degree-of-freedom series robot, the threedisplacement sensors are arranged, displacement of clamping claws in the X direction, the Y direction and the Z direction can be automatically adjusted to the preset value by means of a feedback control loop formed by the displacement sensors, a control host, an X-direction air pump, the Y-direction air pump and a Z-direction air pump,, a traditional manual operating and adjusting mode is replaced, adjustment results are accurate, the teaching demonstration effect is improved, and the robot can be utilized and popularized widely advantageously.
Owner:WUHU HAILIAN MACHINERY INSTALLATION

Method, system and device for adjusting data sending rate

The embodiment of the invention provides a method, a system and a device for adjusting a data sending rate, and relates to the field of data processing. The method comprises the steps of under the condition that network congestion occurs in connection between a sending terminal and a receiving terminal, determining the congestion position where the network congestion occurs in the connection, determining the calculation mode of a sending window value based on the congestion position, and the sending window value is characterized in that the sending terminal calculates the sending window value through a highest rate of connecting transmitting data based on a determined calculation mode, and sends the sending window value to the sending terminal, so that the sending terminal adjusts the sending rate of sending data through the connection based on the sending window value. By applying the method provided by the embodiment of the invention, the accuracy of adjusting the data sending rate can be improved.
Owner:BEIJING UNIV OF POSTS & TELECOMM

Chloroacetamide herbicide capsule suspension and production method thereof

InactiveCN109717187AEasy to adjust the release rateSmooth responseBiocideAnimal repellantsMicrobiologyChloroacetamide
The invention discloses chloroacetamide herbicide capsule suspension and a production method thereof. The produced hloroacetamide herbicide capsule suspension is stable in quality and controllable inrelease rate, and has quick release efficacy and slow release efficacy at the same time; and the production method is simple to operate, easy to control, high in production efficiency and short in production time.
Owner:JIANGSU ESSENCE AGROCHEM +1

Debugging method of air balance system of airplane paint spraying hangar

The invention provides a debugging method for an air balance system of an airplane paint spraying hangar. The debugging method comprises the following steps: checking a mounting condition of the air balance system and checking the function of the air balance system; mounting air volume test holes in an air pipe of the air balance system, and determining the distance between the test holes according to the size of the air pipe; measuring the unit total air volume of the air balance system and determining the unit frequency and adjusting the unit total air volume; adjusting electric valves of all the main pipes and finally achieving air volume balance of the main pipes; measuring data of tail end air ports, adjusting tail end hand valves of branch pipes and adjustable shutters (OBD) of the tail end air ports according to the data, and finally completing air volume balance of the branch pipes; measuring the air volume and the air pressure of the main pipes again, and adjusting air volume balance again; and measuring air speeds of all the exhaust grilles, and adjusting the air volumes of the exhaust grilles. The debugging method has the characteristics of simple steps, high practicability, high adjustment precision and clear and definite debugging steps.
Owner:CHINA RAILWAY CONSTR ENG GROUP

Screen brightness adjusting method and device

The invention relates to the field of terminal equipment, in particular to a screen brightness adjusting method and device. The invention discloses a screen brightness adjusting method, and the method comprises the steps: obtaining the use scene information of a first application in the operation process of the first application; according to the usage scene information of the first application, determining a historical adjustment record of screen brightness from a stored screen brightness adjustment table, the screen brightness adjustment table being used for storing screen brightness adjustment records of each application in different scenes; and adjusting the current screen brightness according to the historical adjustment record. According to the screen brightness adjustment record of each application in different scenes, automatic adjustment of the screen brightness of different applications in different use scenes is realized.
Owner:SPREADTRUM COMM (TIANJIN) INC

Air pressure regulator for air compressor

The invention discloses an air pressure regulator for an air compressor. The air pressure regulator comprises a rectangular cylinder body; a diaphragm, a connecting rod and a spiral spring are arranged in the cylinder body; the bottom of the cylinder body is provided with an air inlet; the air inlet is communicated with the air compressor; the diaphragm is horizontally clamped to the wall of the cylinder body and is arranged right above the air inlet; the top of the diaphragm is provided with a first disk in an attaching touch manner; the middle of the first disk is connected with the connecting rod; the connecting rod is horizontally provided with a second disk opposite to the first disk; the second disk is arranged in the cylinder body; the spiral spring is abutted against between the first disk and the second disk; the connecting rod penetrates through the top of the cylinder body; two ends of the top of the connecting rod are provided with moving contacts; fixed contacts are arranged below the moving contacts; the moving contacts and the fixed contacts are connected with a power supply. The air pressure regulator aims to solve the problems of complicated control method and inaccurate regulation results of the conventional pressure regulator.
Owner:重庆市合川区均恒金属加工厂

Vibrating table turnover limiting device and turnover stand

The invention relates to the technical field of vibration testing, in particular to a flipping limit device and a flip frame for a vibrating table. The flipping limit device includes a limit fixing block, a limit adjustment bumper, a push rod and a limit switch. Installed on the limit adjustment block, the limit adjustment block is slidably arranged on the limit fixed block, and the limit fixed block is provided with a first connecting plate, and the first connecting plate A connection hole is provided on the top, and the push rod can move through the connection hole and contact with the limit adjustment bumper. When the push rod moves in the connecting hole, it can push the movement of the limit adjustment bumper on the limit fixed block, thereby adjusting the distance between the limit adjustment bumper and the turret, so that the limit adjustment bumper With a certain adjustment margin, the adjustment method of changing the position of the limit adjustment bumper through the movement of the push rod is more convenient to operate and the adjustment result is more accurate than the prior art.
Owner:BEIJING AREOSTANARD NEW TECH +2

Natural gas intelligent heating system and heating method

The invention provides a natural gas intelligent heating system. The system involves a temperature measuring sensor, a statistical filter, a storage analyzer, a heat calculator, a heat meter and an automatic combustor, wherein the input end of the statistical filter is connected with the output end of the temperature measuring sensor, the input end of the storage analyzer is connected with the output end of the statistical filter, the input end of the heat calculator is connected with the output end of the storage analyzer, the heat meter and the automatic combustor form a closed-loop controlsystem, and the input end of the closed-loop control system is connected with the output end of the storage analyzer. According to the natural gas intelligent heating system, the heat calculator calculates instantaneous heat consumption of a heating building according to a real-time outdoor air temperature measured by the temperature measuring sensor and data information of the heating building, then the instantaneous heat consumption is directly compared with actual output heat of a gas-fired boiler, the output heat of the gas-fired boiler is adjusted in time according to the comparison result, compared with an existing return water temperature control mode, the adjustment basis is more direct, the adjustment time is shorter, heat adjustment at a certain time period and a certain time point can be completed, adjustment is more accurate, and the conditions of output heat adjustment lag, indoor overheating or no heating cannot occur.
Owner:西安瑞行城市热力发展集团有限公司

Head position real-time monitoring device

The invention discloses a real-time head position monitoring device which can be worn on the head of a patient after an operation to monitor the head position condition of the patient in real time and can give an alarm in time to inform medical staff or family members that the head position is corrected when the head posture deviates from the correct posture which should be kept (the head position is not correct). According to the technical scheme, the head position real-time monitoring device comprises a head-mounted mechanism capable of being fixed to the head, a detection mechanism used for detecting the head position condition and an alarm mechanism used for giving an alarm when the head position is not correct, and the detection mechanism comprises a control circuit module, a gyroscope sensor, a head position reference module and an adjusting controller; the gyroscope sensor is fixedly arranged on the head-mounted mechanism, the head position reference module converts the head position change condition into a visual signal in real time, and the adjusting controller is used for intervening in the signal change of the head position reference module.
Owner:WENZHOU MEDICAL UNIV

Automobile data recorder visual angle adjusting method, storage medium and system

The embodiment of the invention provides an automobile data recorder visual angle adjusting method, a storage medium and a system. The automobile data recorder visual angle adjusting method comprisesthe following steps: acquiring a picture shot by an automobile data recorder; extracting a skyline in the picture to obtain the position of the skyline in the picture; and determining a pitching adjustment angle and / or a rolling adjustment angle of the automobile data recorder according to the position and the angle of the skyline in the picture, wherein the pitch adjusting angle is used for making an actuator adjust a pitch angle of the automobile data recorder; and the rolling adjustment angle is used for making the actuator adjust a rolling angle of the automobile data recorder. According to the scheme, the visual angle adjusting method of the automobile data recorder is not affected by automobile types and is wide in adaptability, and an obtained visual angle adjusting result of the automobile data recorder is more accurate.
Owner:BEIJING DIDI INFINITY TECH & DEV

Method for controlling oil film thickness of static pressure workbench based on working condition coefficient method

The invention relates to a method for adjusting and controlling the oil film thickness of a static pressure workbench under time-varying working conditions, and belongs to the field of mechanical engineering. The method avoids the time-varying working condition factors affecting the formation of the oil film thickness, such as the structure size, load, cutting force, oil temperature and viscosityof a workbench; and only a set of motor frequency needs to be set under the current working conditions, the corresponding oil film thickness is measured, and a one-to-one correspondence relation between the motor frequency and the oil film thickness is obtained, so that the average working condition coefficient of the set of data is obtained, a control model between the motor frequency and the oilfilm thickness is established, an oil film thickness target value is substituted into the control model, the motor frequency is inversely calculated, the frequency is the required motor frequency forthe time-varying working conditions, and then the motor is driven at the motor frequency to drive an oil pump to adjust the oil film thickness to the target value. A device of the method has the advantages of simple process, accurate adjustment result, small adjustment error and the like.
Owner:HUBEI UNIV OF TECH
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