33 results about "High speed control" patented technology

The invention discloses a satellite communication multi-link intelligent switching system, which relates to the technical field of satellite communication and comprises at least two satellite communication links including a main link and a standby link. The switch is connected with a satellite communication link through a physical port of the switch; and the intelligent control unit is in communication connection with the satellite communication link and the switch, monitors and analyzes the satellite communication link, and controls the switch to be switched to the standby link when detecting that the main link fails. According to the method, the judgment standard can be dynamically adjusted according to the link historical performance, and intelligent and accurate recognition of faults is achieved; and millisecond-level non-inductive switching when a communication link fails is realized by utilizing the capability of the ASIC chip of the switch for performing high-speed control on a port state, so that extreme continuity of key services is guaranteed.

The invention relates to the technical field of design optimization, in particular to a control design optimization method and system for a permanent magnet synchronous motor. The method comprises the following steps: obtaining and measuring a stator three-phase voltage value and a current value of the PMSM and a motor rotating speed in real time; constructing a d-q axis motor equivalent circuit model, and calculating an available boundary curve of the voltage of the weakening area by combining the three-phase voltage value of the stator and the rotating speed of the motor; determining a dynamic safety margin coefficient of a weakening area voltage-current working area based on the weakening area voltage available boundary curve; judging the motor rotating speed of the permanent magnet synchronous motor; by introducing voltage-current working area modeling and a dynamic safety margin coefficient, accurate current control and adaptive inverter compensation of the PMSM in a weak magnetic area are realized, and the problems of poor stability, insufficient voltage margin and incomplete compensation in traditional high-speed control are solved.

A power tool includes a trigger module, a motor unit, and a controller electrically connected to the trigger module and the motor unit. The controller stores parameter data that define a common control curve that represents a corresponding relationship between a reference pressed depth and a reference rotation speed. The controller obtains a pressing value from the trigger module, and outputs a control signal at least based on the common control curve and the pressing value to the motor unit. The common control curve has a low-speed curve segment and a high-speed curve segment. In a low speed mode, the controller outputs the control signal based on the low-speed curve segment. In a high speed mode, the controller outputs the control signal based on a high-speed control curve composed at least of the low-speed curve segment and the high-speed curve segment.

The invention provides a manipulator AWC calibration method and system based on delay compensation, and belongs to the technical field of semiconductor manufacturing equipment automation. The method comprises the steps that when the operation speed of a manipulator is low, the position of a sensor in a robot basic coordinate system is calculated; when the operation speed of the manipulator is full speed, inversely solving the radius of the wafer according to the position of the sensor in the robot basic coordinate system and the position of the manipulator when the sensor is triggered; in the process of inversely solving the radius of the wafer, constructing a delay compensation model; and delay verification is conducted on the constructed delay compensation model, when the verification result is that calibration succeeds, the high-speed control mechanical arm stretches out of the station, and the delay compensation model is adopted for deviation correction. The problem that AWC calibration precision is reduced due to signal transmission delay under the high-speed working condition is solved, and laser sensor base coordinate calibration and wafer circle center positioning errors under high-speed movement are reduced.

The application relates to a double-cavity vacuum spray type oil degassing method, device and equipment. The method comprises the following steps: turning on an oil supply channel, supplying oil to a low-speed oil cavity until a first position is reached to obtain a first feedback signal; controlling a gas mixing channel to be turned on according to the first feedback signal, mixing oil gas in the high-speed oil cavity to obtain oil gas mixed liquid; controlling an oil discharge channel to be turned on and discharging oil from the oil cavity at high speed to obtain a negative pressure signal; controlling the oil supply channel to be turned on according to the negative pressure signal, supplying oil to the oil cavity at high speed until a second position is reached and the oil temperature reaches a temperature setting value to obtain a second feedback signal; controlling a circulating degassing channel to be turned on according to the second feedback signal, separating oil gas at high speed within a second time to obtain to-be-discharged gas and a third feedback signal; and controlling a gas collecting channel to be turned on according to the third feedback signal, discharging the to-be-discharged gas into a gas collecting tank at low speed until an oil liquid surface reaches a first position of the oil liquid surface, so that oil degassing of the oil cavity is completed.

The invention discloses a high-speed motor full-speed-domain high-precision speed measurement method based on a gear encoder, and belongs to the technical field of high-speed motor control. The method comprises the steps that a gear encoder is coaxially installed at the shaft end of a motor, integer position pulses are obtained through an enhanced orthogonal encoding pulse module, decimal position pulses are obtained through an enhanced capturing module, and rotor mechanical position pulses are calculated by combining the integer position pulses and the decimal position pulses. And calculating a single-interrupt period position pulse increment through a main interrupt program, performing multi-period accumulation, and calculating the rotating speed of the motor in real time based on an accumulation result. According to the method, through a continuous interruption accumulation algorithm, integer and decimal position pulse information is fully utilized, truncation errors and random errors in a traditional pulse measurement method and a time measurement method are effectively reduced, high-precision and fast-response speed measurement of the high-speed motor in the full-speed domain range is achieved, and the method is suitable for a high-speed control system with the speed of more than 60000 revolutions per minute and has a wide application prospect. The system has the advantages of simple structure, strong anti-interference capability and low software and hardware overhead.

The application discloses a dry-type hollow shunt reactor overvoltage protection device and belongs to the technical field of overvoltage protection of power transmission and transformation equipment. When system operation overvoltage occurs, the frequency absorption unit can reduce the oscillation frequency of overvoltage, slow down the rising front of overvoltage, solve the damage of high-frequency components to the reactor winding, and inhibit the overvoltage peak value. When the frequency absorption unit cannot inhibit the overvoltage peak value, the overvoltage absorption unit plays a role in limiting the overvoltage peak value, and the insulation level of the reactor is enhanced. Through the application of the voltage monitoring and conversion unit, when the reactor is normally operated or the overvoltage is lower than the operation threshold value, the high-speed control switch is turned on, the explosion-proof separation unit is short-circuited and bypassed, and the frequency inhibition absorption unit and the overvoltage absorption unit bear the main protection task. When the monitored voltage exceeds the set threshold value or the absorption unit fails or is subjected to thermal breakdown, the high-speed control switch is turned off, the explosion-proof separation unit is connected to the circuit, the faulty unit is timely removed, and the fault expansion is prevented.

The invention provides a method and a system for dynamically adjusting the size of a UDP (User Datagram Protocol) packet, and relates to the technical field of data processing. The method comprises the following steps: firstly, selecting the minimum packaging time corresponding to a first controller (a high-speed controller), and limiting the target packaging time of a second controller (a low-speed controller) to be less than the minimum packaging time, namely ensuring that the packaging time of the second controller (the low-speed controller) is always shorter than the fastest packaging time of the first controller (the high-speed controller). And reversely deducing the UDP packet size of the second controller according to the target packaging time and the traffic data of the second controller, so that the packaging time of the second controller can be forced to be less than the minimum packaging time of the first controller by dynamically allocating the UDP packet size of the second controller, and the packaging efficiency of the second controller is improved. The data packet collected by the low-speed controller can be sent to the storage domain controller before or in synchronization with the data packet of the high-speed controller, so that the receiving end is ensured to store data according to the time sequence, and the disorder of the timestamp sequence is avoided.

To improve work efficiency in excavation work, and to prevent an operator from feeling discomfort in the behavior of a work machine.SOLUTION: A system according to the present disclosure includes an operation member and a controller. The operation member is operable by an operator of the work machine. The controller determines whether the work machine is performing an excavation work. When it is determined that the work machine is performing excavation work, the controller executes high rotation speed control for increasing the rotation speed of the power source. The controller determines whether the work machine has ended the excavation work. The controller cancels the high rotation speed control when it is determined that the work machine has finished the excavation work. Even when it is determined that the work machine is performing excavation work, the controller cancels the high rotation speed control when a predetermined operation is performed by the operation member.SELECTED DRAWING: Figure 4

The invention belongs to the technical field of battery management systems, and particularly relates to a multi-series-parallel battery module anomaly detection method, which is characterized in that a micro artificial intelligence coprocessor is embedded in each battery module, and is integrated with a voltage sampling unit and a temperature sampling unit; the method comprises the following steps: synchronously acquiring voltage and temperature data of each battery cell in a module according to a preset sampling period of 1 millisecond, and carrying out moving average filtering and outlier elimination preprocessing on the acquired original data; a miniature artificial intelligence coprocessor is embedded into each battery module, and a lightweight long-short-term memory network model is deployed, so that localized real-time initial judgment of abnormal signals is realized, and data processing and transmission delay is remarkably reduced; through a cascade confirmation mechanism constructed by a local area network flexible data rate bus based on a high-speed controller, a plurality of modules can rapidly and cooperatively verify abnormity, real faults and instantaneous interference are effectively distinguished, and the false alarm rate and the missed detection risk of the system are greatly reduced.

The invention belongs to the field of sensorless operation control, and particularly relates to a double three-phase permanent magnet synchronous motor sensorless operation control method, which comprises medium-low speed control and medium-high speed control, the medium-low speed control comprises a high-frequency signal injection method, and the medium-high speed control comprises a sliding mode observer method. The transition interval adopts a weighting function for calculating a weight coefficient based on a cosine function for transition; the high-frequency signal injection method comprises the steps that pulsating high-frequency sinusoidal voltage is injected into the stator, high-frequency components in induced current are modulated through rotor salient polarity, zero and low-speed control is achieved, a phase discriminator structure is reconstructed to eliminate 180-degree position deviation during inversion, and a feed-forward loop is designed to suppress direct-current offset errors of acceleration and deceleration working conditions. The sliding mode observer method comprises the steps of extracting rotor position information through back electromotive force observation, combining smooth output of a phase-locked loop PLL, fusing disturbance suppression capability of an ESO (extended state observer) and noise robustness of the phase-locked loop PLL, and reducing position tracking lag when the rotating speed suddenly changes.

This invention discloses a switching time-modulated harmonic direction finding device and method, belonging to the field of radio frequency signal direction finding technology. It includes a radio frequency switching unit, a control unit, an ADC acquisition module, and a digital processing module. The radio frequency switching unit achieves signal time modulation through periodic switching of PIN diodes, coupled with a compensation network to optimize impedance matching and isolation performance. The control unit uses a high-speed comparator to output a stable, high-speed control signal. The ADC acquisition module performs analog-to-digital conversion. The digital processing module recovers the equivalent direction finding signal using a signal recovery algorithm based on the time-modulated sequence and estimates the direction of arrival based on a multiple signal classification algorithm (MUSIC). The method includes signal modulation, analog-to-digital conversion, equivalent signal recovery, and direction estimation steps. This invention eliminates the need for high-precision phase shifters and multi-channel parallel complete receiving links, simplifying the system structure and reducing hardware costs while retaining array direction finding capabilities. It is suitable for radar, communication, and other scenarios, balancing hardware simplification and direction finding accuracy.

The application discloses a kind of self-adapting mechanical arm grabbing method based on visual servoing, and the grabbing method includes S1, rough approach stage, obtains the point cloud and image data of work scene, carries out preliminary identification and pose estimation to target object;S2, initial trajectory planning, utilizes five Bezier curves to carry out initial trajectory planning;S3, fine servo stage, mechanical arm moves along initial trajectory planning, and adopts visual servo closed-loop control;S4, blind grabbing stage, when the end of mechanical arm approaches target object and causes partial or complete loss of visual feature, the system starts multimodal fusion control to complete grabbing.The application divides the grabbing process into four stages of rough approach, trajectory planning, fine servo and blind grabbing, and uses different control strategies for the characteristics of each stage, uses prediction filter to correct the error caused by visual delay in advance, smoothly connects low-speed vision and high-speed control, and improves dynamic grabbing precision.

The invention discloses a photovoltaic and energy storage compatible low-voltage spare power automatic switching control method and device, which is applied to a group of main and standby power supply switching systems, and comprises the following steps: utilizing an integrated hybrid inverter module at the moment of a mains supply fault, and performing dynamic buffering through an energy storage battery before an ATS physically disconnects a main power supply; compensating the difference between the power required by the load and the current photovoltaic actual output power so as to maintain the stability of the voltage and frequency of the load side; under the condition that the electric energy quality of the load side is not sensed, seamless switching from the mains supply to the photovoltaic energy storage combined power supply mode is carried out; and after the switching is completed, dynamically adjusting the discharge depth and rate of the energy storage according to the real-time illumination intensity and load change through a self-adaptive impedance matching algorithm. According to the invention, the hybrid inverter integrated with the high-speed DSP controller and the voltage source type inversion topology is arranged, so that smooth, efficient and seamless switching and cooperative power supply among the power grid, photovoltaic power, energy storage and load can be realized in the automatic switching execution process of the power grid.

This invention relates to a silicon MOS quantum bit device and its fabrication method. The silicon MOS quantum bit device employs a dual-layer gate architecture combining a polysilicon global gate and a metal local gate: the first layer is a polysilicon global gate, covering most of the active region of the quantum dot, enabling potential shielding and static coarse tuning; the second layer is a localized metal fine gate, with each metal gate electrode corresponding to a single quantum dot, enabling near-field fine tuning and high-speed gating. The combination of the polysilicon global gate and the metal local gate can reduce charge noise and improve coherence time while achieving precise and high-speed control of the quantum dot. The disclosed method is based on mature CMOS process technology, suitable for reproducible manufacturing on large-size wafers, and can significantly improve the proportion of usable quantum bits and device yield.

The present application relates to the technical field of automatic control of chemical separation equipment, and particularly relates to an automatic control method for a high-cycle batch four-bromine bisphenol A centrifugal separation process. Data in a feed pipe is collected, corresponding control signals are output until filter cake load feedback data reaches a set threshold value; feed parameters are collected, a dynamic dewatering control algorithm is used to control mother liquor turbidity to be lower than a set threshold value; material liquid temperature and mother liquor turbidity data are collected, two control signals are formed by an intelligent spraying control algorithm, and are output to two gradient spraying pumps; a constant maximum speed control signal is output to a centrifuge main motor driver, filter cake humidity feedback is collected, and when humidity feedback data reaches a set drying target value, a discharge instruction is output and the control process is completed. The present application collects multi-dimensional data of material state and separation effect in real time through an online sensor network, and achieves the technical effect that even if feed conditions fluctuate, the excellent stability of batch product quality can be ensured.

The application provides a fan speed regulation system and an uninterruptible power supply. The system comprises a power supply transformer, a fan, an auxiliary power supply, a speed regulation switching circuit, a controller and a speed regulation driving circuit. The first switching path of the speed regulation switching circuit is connected to the high-voltage output end of the power supply transformer and the fan when the first control path is not turned on. The second switching path is connected to the low-voltage output end of the power supply transformer and the fan when the second control path is turned on. The speed regulation driving circuit processes the high-speed initial signal and the low-speed initial signal of the fan output by the controller and outputs the high-speed control signal and the low-speed control signal to make the first and second control paths be turned on at the same time, be turned off at the same time or make the first control path be turned on and the second control path be turned off. The auxiliary power supply is used to supply power to the controller, the first and second control paths. The above structure not only prevents the short circuit of the power supply transformer, but also enables the fan to run at full speed when the auxiliary power supply is powered off, thereby ensuring the safe and stable operation of the uninterruptible power supply.

The reusable on-orbit charging circuit for the small aircraft comprises a power supply input interface, a power conversion circuit, a control circuit and an external output power supply interface, the control circuit comprises a constant-current-to-constant-voltage double-loop control circuit, a safety protection switch and a high-speed PWM controller. According to the invention, each functional module circuit is built through hardware, so that the conversion of a power supply from high voltage to low voltage and a safety isolation function (power conversion circuit + DC / DC) are realized; a constant-current-to-constant-voltage charging function (a constant-current-to-constant-voltage double-loop control circuit) of the lithium ion storage battery pack of the small aircraft is realized; and the functions of input over-current protection, output over-voltage protection (safety protection switch + software over-voltage protection safety strategy) and output current-limiting protection (constant-current charging) are realized. The on-orbit energy supply of the small aircraft is realized, the charging safety problem of the lithium ion storage battery pack when the small aircraft is parked on a large aircraft is solved, and the device can be repeatedly used.

This disclosure provides a method and system for end-of-line protection control of a rear-wheel steering system for automobiles, relating to the field of rear-wheel steering technology. The method includes: acquiring the vehicle's real-time speed, the maximum high-speed rear wheel angle, and the maximum low-speed rear wheel angle; calculating the weight of the maximum low-speed angle based on the current vehicle speed and the high-speed function speed boundary; calculating the weight of the maximum high-speed angle based on the current vehicle speed and the low-speed function speed boundary; calculating the maximum rear wheel angle using the maximum high-speed angle weight, the maximum low-speed angle weight, the maximum high-speed rear wheel angle, and the maximum low-speed rear wheel angle; and limiting the output angle of the rear wheel steering angle using the maximum rear wheel angle. This disclosure only requires calibrating the lookup data for low-speed control and high-speed control to calculate the end-of-line protection angle at the transition speed, simplifying the calibration and calculation steps.

Systems and techniques that facilitate amplitude-driven at-speed control of digital-to-analog converters are provided. In various embodiments, a system can comprise a digital-to-analog converter that is configured to generate an analog waveform based on a digital amplitude indicator sequence. In various aspects, the system can comprise a processor that is configured to reset an operating characteristic of the digital-to-analog converter in response to detection of a defined digital amplitude indicator subsequence in the digital amplitude indicator sequence. In various instances, the operating characteristic can be operation of a numerically controlled oscillator of the digital-to-analog converter.

The invention relates to a high-speed control valve powered by fluid kinetic energy and a working method of the high-speed control valve, and belongs to the field of fluid transmission and control. The energy recovery unit can actively recover kinetic energy of fluid in the pipeline, the recovered electric energy is directly used for driving the piezoelectric element and the electromagnetic element, the quick response and clamping stagnation prevention functions of the control valve can be maintained for a long time, and therefore the system reliability is improved while efficient action is guaranteed. Composite driving of the piezoelectric element and the electromagnet is adopted, instantaneous driving force is generated through the quick response characteristic of the piezoelectric element, the static friction force of the valve element is overcome, pilot accurate control is achieved, valve element driving is completed through small electromagnetic force, and therefore the response speed is increased, and energy consumption is reduced. By means of the high-frequency micro-vibration structure, valve element unbalance loading caused by asymmetry of hydraulic pressure under the high-pressure condition and the clamping stagnation phenomenon caused in the hydraulic oil pollution state can be effectively weakened.

The invention discloses a double-motor front-end speed regulation structure of a wind power gear box and a speed regulation method of the double-motor front-end speed regulation structure of the wind power gear box, and the double-motor front-end speed regulation structure comprises a fan blade, the wind power gear box, a differential speed regulation gear box, a speed regulation motor, a generator, an output gear, a motor gear and a permanent magnet generator, the output end of the wind power gear box is in transmission connection with the output gear, the output gear is in meshing transmission with the motor gear, the motor gear is connected with the input end of the permanent magnet generator, the output end of the permanent magnet generator is connected with the speed regulating motor, the speed regulating motor is in transmission connection with the differential speed regulating gear box, and the output gear is in transmission connection with the input end of the differential speed regulating gear box. And the output end of the differential speed regulation gear box is connected with the generator. The input rotating speed of the generator is adjusted in the mode that the speed regulation motor directly drives the differential mechanism, the response speed is high, the rotating speed control precision is high, power generation is stable, the whole speed regulation system is powered by itself, and electricity does not need to be taken from a power grid.

The invention discloses an overvoltage protection device for a dry-type hollow shunt reactor, which belongs to the technical field of overvoltage protection of power transmission and transformation equipment, and is characterized in that when an operation overvoltage occurs in a system, a frequency absorption unit can reduce the oscillation frequency of the overvoltage, slow down the rising leading edge of the overvoltage, and solve the damage of a high-frequency component to a reactor winding; when the frequency absorption unit cannot restrain the overvoltage peak value, the overvoltage absorption unit plays a role in limiting the overvoltage peak value and enhancing the insulation level of the reactor, and through the application of the voltage monitoring conversion unit, when the reactor operates normally or the overvoltage is lower than an operation threshold value, the high-speed control switch is switched on, and the high-speed control switch is switched off. The explosion-proof separation unit is bypassed by a short circuit, and the frequency suppression absorption unit and the overvoltage absorption unit undertake the main protection task; when the monitored voltage exceeds a set threshold value or the absorption unit has a fault or thermal breakdown, the high-speed control switch is switched off, the explosion-proof separation unit is connected to the circuit, the fault unit is timely cut off, and fault extension is prevented.

The application discloses a laser coarse-precision integrated tracking control method and system, and belongs to the technical field of laser communication control and adjustment. A light beam direction vector is constructed in a three-dimensional space, and inverse rotation operation is carried out in combination with a current turntable attitude, so that camera errors can be uniformly returned to an initial base coordinate system in any attitude, thereby realizing geometric consistency calculation and dynamic decoupling control of coarse tracking and precision tracking. The coarse tracking and the precision tracking adopt the same line-of-sight vector modeling method, the algorithm structure is unified, through the inverse rotation operation, the errors are always returned to the initial base coordinate system, the coupling influence caused by the change of the turntable attitude is eliminated, the mirror compensation angle is directly deducted on the line-of-sight angle level, the control superposition conflict in the traditional double-loop structure is avoided, under the small-angle approximation, only matrix multiplication and arctangent operation are needed, and the application is suitable for embedded high-speed control systems, and the turntable only tracks low-frequency residual errors, and high-frequency jitter of the mirror is avoided from being transmitted to the mechanical structure.

The utility model relates to the technical field of electronic products, and discloses an FCT automatic testing device which comprises a testing support, an FCT body is arranged at the middle end of the testing support, a control box is arranged on the left side of the bottom end of the FCT body, a check block air cylinder is arranged at the top end of the FCT body, and a plurality of handle air cylinders are arranged on the front side of the top end of the testing support. One end of the handle cylinder at the top end is connected with the stop block cylinder, the other end is connected with the test support, one end of the handle cylinder at the bottom end is connected with the left side of the FCT body, and the other end is connected with the test support. According to the device, a high-speed MCU control system is adopted, work is flexible and stable, manual work is replaced with mechanical action of the air cylinder, work efficiency is improved, OK and NG are automatically displayed, and manual misjudgment is reduced; according to the device, manual testing is replaced, the labor cost of one to two persons is saved, automatic testing is achieved, operators are liberated, and the efficiency is improved by more than 50%.

[Problem] To improve user convenience. [Solution] A configuration is adopted in which a compressed high-pressure gas is used and the use of a pump is eliminated in all of an operation of spraying a compressed high-pressure gas, an operation of spraying a gas-liquid mixture, and an operation of exhausting an excess gas component, thereby achieving small size and portability. Since all operations are performed with the high-pressure gas, it is necessary to suppress the consumption of compressed gas. Thus, a flow channel valve is controlled at high speed by a pulse width modulation (PWM) signal to suppress the consumption of compressed gas. It is also effective to maximize the cleaning effect to suppress the consumption of compressed gas. Accordingly, the nozzle structure for spraying is composed of a Laval nozzle capable not only of simply ejecting fluid at high speed but also ejecting fluid at high flow velocities from subsonic to supersonic speeds.

This invention discloses a low-voltage standby automatic transfer control method and device compatible with photovoltaic (PV) and energy storage, applied to a primary / standby power switching system. The method includes: at the moment of a mains power failure, utilizing an integrated hybrid inverter module, before the ATS physically disconnects the mains power, dynamically buffering the load through energy storage batteries to compensate for the difference between the power required by the load and the actual output power of the PV, thereby maintaining the stability of the load-side voltage and frequency; seamlessly switching from mains power to a combined PV and energy storage power supply mode without affecting the power quality on the load side; and after the switch is completed, dynamically adjusting the discharge depth and rate of the energy storage based on real-time light intensity and load changes using an adaptive impedance matching algorithm. This invention, by setting up a hybrid inverter integrating a high-speed DSP controller and a voltage source inverter topology, enables smooth, efficient, and seamless switching and coordinated power supply between the grid, PV, energy storage, and load during automatic grid switching.

The invention discloses a laser coarse-fine integrated tracking control method and system, and belongs to the technical field of laser communication control and adjustment. A light beam direction vector is constructed in a three-dimensional space, and inverse rotation operation is performed in combination with a current rotary table attitude, so that a camera error can return to an initial base coordinate system in a unified manner under any attitude, and geometric consistency resolving and dynamic decoupling control of coarse tracking and fine tracking are realized. The coarse tracking and the fine tracking adopt the same line-of-sight vector modeling method to realize the unification of the algorithm structure; through the inverse rotation operation, the error always returns to the initial base coordinate system, and the coupling influence caused by the attitude change of the turntable is eliminated; the galvanometer compensation angle is directly deducted from the sight angle level, and control superposition conflicts in a traditional double-ring structure are avoided; under small-angle approximation, only matrix multiplication and arc tangent operation are needed, and the method is suitable for an embedded high-speed control system; the rotary table only tracks low-frequency residual errors, and high-frequency jitter of the galvanometer is prevented from being transmitted to a mechanical structure.

The utility model provides a windscreen wiper control system. The system comprises a low-speed control module, a high-speed control module and a wiper motor. The wiper motor comprises a first inductance coil and a second inductance coil which are connected in series. The wiper motor is used for driving the wiper; the low-speed control module is used for controlling the windscreen wiper to operate at low speed The high-speed control module is used for controlling the windscreen wiper to run at high speed When the windscreen wiper is in a low-speed windscreen wiper working state, the first inductance coil and the second inductance coil are connected into a circuit in series through the low-speed control module. When the windscreen wiper is in a high-speed windscreen wiper working state, the second inductance coil is connected into the circuit through the high-speed control module, and the first inductance coil is not connected into the circuit. According to the windscreen wiper control system, the number of the connected inductance coils is controlled through the low-speed control module and the high-speed control module so as to control high-speed operation and low-speed operation of the windscreen wiper, a relay is not used for controlling operation of the windscreen wiper any more, faults are not prone to occurring, and noisy electromagnetic noise cannot be generated during operation.