324 results about "Stepper motor control" patented technology

The invention relates to a stepping motor control method and device based on load torque, which mainly performs closed-loop control on a stepping motor by collecting current and voltage signals so as to optimize the working efficiency of the motor. According to the method, firstly, a current signal is filtered and compared with a target reference value, a current deviation is calculated, and if the deviation exceeds a threshold value, a target PWM signal is generated to adjust the current until the deviation is reduced to be within a preset range. When the current meets the requirement, a voltage commutation point and a current zero point are determined based on the voltage signal, the current load state and torque value are calculated by combining the time interval between the voltage commutation point and the current zero point with preset no-load time and out-of-step time, and the working current is adjusted according to the information, so that the working efficiency of the stepping motor is optimized.

The invention belongs to the technical field of integrated circuits, and particularly relates to a stepping motor current control method and device. The control circuit is used for an H-bridge motor driving circuit, the four switches of the H bridge control the working state of the motor under the control of the driving signal, and in one PWM period, the four switches of the H bridge are controlled to enable the average current of the load to be equal to the set current. According to the stepping motor current control method provided by the invention, the load average current in a PWM period can be completely equal to the set current, and the error of the angle position of the stepping motor is reduced. The invention also provides a stepping motor control device for correspondingly realizing the attenuation mode.

The invention discloses an active-disturbance-rejection control optimization system and method for a stepping motor servo system, and relates to the technical field of stepping motor control, and the system comprises a signal processing unit which is used for carrying out the filtering processing of an input signal of the stepping motor servo system; the state observer unit is used for calculating the disturbance compensation amount; and the control algorithm unit is used for carrying out active disturbance rejection control optimization on the stepping motor servo system. According to the method, an active-disturbance-rejection control closed loop combining feed-forward compensation and feedback adjustment is effectively constructed, the control precision, robustness and dynamic performance of the stepping motor servo system are improved, and the method has industrial application prospects and technical popularization value.

The invention relates to the technical field of air purification, and discloses a control method of an air purification device, a control device, computer equipment and a storage medium, the air purification device comprises a machine body and a laser lamp assembly arranged on the machine body, the laser lamp assembly comprises a laser lamp and a driving structure capable of driving the laser lamp to move, and the driving structure comprises a stepping motor; the control method comprises the steps that parameters are set and comprise at least one of A, B and C, A represents the rotating direction of a stepping motor, B represents the rotating speed of the stepping motor, and C represents the lighting state of a laser lamp; if the cat teasing function is started, randomly selecting parameter values at intervals t, and controlling the stepping motor and the laser lamp to work according to the randomly selected parameter values. The laser lamp rotates or lights irregularly, so that the laser track projected by the laser lamp changes irregularly, and the interactive entertainment and interestingness with the pet can be enhanced.

The invention discloses an automatic satellite alignment system for a portable satellite station, which belongs to the technical field of automatic satellite alignment and comprises a single chip microcomputer, a geographic positioning module, a posture sensing module, a stepping motor control module, a learning optimization module, a scanning path optimization module, a signal strength detection module, an antenna azimuth search module, a signal analysis module, a learning correction module and a data storage module. The invention can avoid falling into a local optimum too early, does not require manual intervention, reduces the complexity of manual debugging, can find more complex and diverse optimization paths, can provide accurate control paths more quickly, and ensure that accurate alignment is completed in a short time; improves the accuracy and efficiency of antenna alignment, reduces the time of the fine-tuning stage, can adapt to different signal environments, quickly finds the maximum value of the signal strength, ensures the communication quality, and reduces the amount of calculation and resource consumption.

The utility model relates to a control device for a microwave anechoic chamber test system. Comprising a shielding box which is a sealed cavity provided with a cover plate, and the shielding box is provided with a power supply socket, a data socket and an optical fiber coupler; a control circuit board, an AC-DC power supply module, a data optical fiber transceiver and other modules are installed in the shielding box. A plurality of motor control units, a power supply interface and a communication interface are integrated on the control circuit board, and a first output end of the AC-DC power supply module is connected with the control board and is used for supplying power to the control board; one end of the data optical fiber transceiver is electrically connected with the optical fiber coupler, and the other end is electrically connected with the communication interface for converting the signal into an optical signal and outputting the optical signal. The control circuit board is placed in the shielding box, so that the size of the rotary table or antenna tower equipment is reduced, and the electromagnetic interference risk of a motor and a darkroom environment is reduced; the control circuit board integrates the servo motor control unit and the stepping motor control unit for modular design, serves as an independent unit of the darkroom test system, and is high in universality.

The invention provides a multifunctional shipborne unmanned aerial vehicle take-off and landing platform, and relates to the technical field of shipborne unmanned aerial vehicle take-off and landing platforms, stable take-off and landing of a large-scale marine rescue unmanned aerial vehicle are achieved through the take-off and landing platform, a bearing electric telescopic rod and three electromagnetic damping telescopic rods are controlled through sensing of a self-stabilization system, and horizontal and vertical stability of the take-off and landing platform is achieved; the unmanned aerial vehicle landing auxiliary system can sense the position and posture of an unmanned aerial vehicle undercarriage, precise landing and fixing of an unmanned aerial vehicle are achieved, stable and high-freedom-degree connection between components is achieved through a connecting structure, an annular rotating base is connected with an electromagnetic damping telescopic rod, circumferential movement of a take-off and landing platform is achieved, and the unmanned aerial vehicle landing auxiliary system is stable and reliable. The problems that a traditional shipborne unmanned aerial vehicle take-off and landing platform is greatly influenced by water surface fluctuation and is low in response speed are solved, the take-off and landing accuracy and stability of a large-scale marine rescue unmanned aerial vehicle are improved, and the rescue unmanned aerial vehicle can be better maintained through the vertical lifting function.

The utility model relates to an H-bridge driving circuit with a discharge branch and a chip, and belongs to the field of motor driving. The driving circuit comprises a driving chip module, a switch control module and a switch misconduction protection module. The switch control module is composed of a triode and MOS tube combined control circuit, it is ensured that grid charges can be rapidly discharged when the IGBT is turned off, and misconduction is prevented. The misconduction protection module enhances the charge discharge capability by providing a low-impedance path, ensures the accurate turn-off of the IGBT, and avoids the influence of surge voltage. The circuit realizes reliability and quick response performance in forward and reverse control and high-frequency switch application of the motor, and is suitable for direct-current motor control, stepping motor control, direct-current-alternating-current converters, direct-current-direct-current converters and other power electronic devices. Through the design, the stability and the safety of the motor control system are effectively improved.

The invention relates to the technical field of railway locomotive lighting, in particular to an automatic steering LED headlamp for a railway locomotive, and can solve the problem that a curve view blind area is caused by fixed installation of an existing headlamp to a certain extent. According to the headlamp, a rotating platform and a stepping motor are additionally arranged at the bottom of the LED headlamp, a control device collects the line turning radius and speed information of a train LKJ device in real time, a steering control instruction is generated through an intelligent algorithm, a motor driver receives the instruction and drives the stepping motor to drive the rotating platform to rotate, and the headlamp is driven to conduct steering adjustment of 0-360 degrees. The system is provided with a zero reset function, the initial irradiation angle is automatically recovered after turning is finished, the view blind area of the curve can be effectively eliminated, the driving safety is improved, meanwhile, the installation and debugging difficulty is reduced, and the system is suitable for the complex mountain railway working condition.

The invention discloses an artificial intelligence-based surface performance detection device for a ship steel plate after laser processing, and relates to the technical field of detection devices, the artificial intelligence-based surface performance detection device comprises an outer shell, a marking mechanism, a walking device, a detection mechanism and a cleaning mechanism; the device is reasonable and simple in structure, low in production cost and convenient to install, the whole device can be pushed to move on the surface of the ship steel plate through operation of the walking device, and continuous cleaning and detection are achieved; all parts of the cleaning mechanism work cooperatively, a motor drives a cleaning roller to rotate for cleaning, an air blower blows away dust and chippings, and a dust collector sucks away impurities, so that the accuracy of subsequent detection is effectively improved; a servo motor or a stepping motor is arranged to control the moving distance and speed of the walking device, and the operation accuracy of the device is guaranteed; the motor is used for driving the movable seat in the detection mechanism to rotate, and the camera and the illuminating lamp are matched to obtain clear image information and transmit the image information to the artificial intelligence analysis system for analyzing the surface performance of the ship steel plate.

A control circuit of a timepiece motor (2), including a bipolar permanent magnet (6), a stator (4) defining two isthmi (12a &12b) and two rest positions for the rotor, and a coil (18) mounted on the stator. The control circuit can determine the position of the rotor at rest. An electric pulse generator (22) for detecting an external magnetic field formed by a circuits for: measuring the electrical current in the coil after an electrical pulse has been triggered, comparing the measured electrical current with a reference current, measuring the time allowing measuring a rise time between triggering of the electrical pulse and the next time the electrical current flowing in the coil reaches the reference current, and processing the rise time to be able to determine whether the measured rise time indicates the presence of a given external magnetic field passing through the two isthmi.

An apparatus and method for measuring a pressure profile of a gas inside a nozzle is provided. An apparatus (101) comprises:-a gas supply (103); -a proportional valve and a flow meter (105), which are connected to the gas supply (103); -a rotatable and movable measurement probe (107), which is connected to the pressure sensor (108); -a nozzle holder (109); -a stepping motor (111) which controls the displacement and rotation of the rotatable and movable measuring probe (107); a digital controller for controlling the stepping motor and the gas flow; data acquisition means; and a computer. The probe is measuring the pressure inside the nozzle, and the apparatus generates a 3D map of the pressure profile of the gas inside the nozzle.

The invention relates to the technical field of motor end cover machining, in particular to a motor end cover with high structural strength and machining equipment thereof.The motor end cover comprises a bottom plate, a rotary lifting assembly is arranged in the bottom plate and comprises a lifting disc, the lower end face of the lifting disc is fixedly connected with a fourth lead screw, and a fixing disc is arranged below the fourth lead screw; the fourth lead screw is in threaded connection with a fixing disc, the fixing disc is fixedly connected to a limiting assembly through an L-shaped support, the lower end of the fourth lead screw is fixedly connected with an output shaft of a fifth stepping motor, and the limiting assembly is arranged in the machine tool assembly. The height of the motor end cover on the lifting disc is controlled through the fifth stepping motor, so that the clamp can be clamped to the protruding edge part of the motor end cover, the motor end cover is positioned and fixed, meanwhile, the fourth lead screw is driven by the fifth stepping motor to slightly move up and down, the motor end cover deflects repeatedly, and therefore mounting lugs are driven to deflect repeatedly; the abutting arc sheet can avoid the installation lug and directly abut against the protruding edge of the motor end cover, and positioning installation is completed.

The invention discloses a two-phase hybrid stepping motor control method and a corresponding motor control system. The method comprises the steps that according to expected displacement, starting point speed, terminal point speed, first acceleration and first deceleration, the maximum planning speed needing to be reached by displacement operation is planned and calculated, the moving trajectory of a stepping motor is planned, and the planned moving trajectory comprises an acceleration section trajectory and a deceleration section trajectory; according to the acceleration trajectory, controlling the stepping motor to accelerate from the starting point speed to the maximum planned speed at the first acceleration; and according to the deceleration section track, controlling the stepping motor to decelerate from the maximum planned speed to the end point speed at the first deceleration. According to the invention, acceleration and deceleration trajectory planning is carried out on the motion trajectory of the stepping motor according to the expected displacement, and motor operation control is carried out based on the acceleration and deceleration trajectory planning, thereby ensuring that the stepping motor rapidly and stably realizes accurate displacement under high-speed operation in the operation process.

The invention belongs to the technical field of experimental devices, and provides a basic local scouring real-time monitoring test device based on an acoustic principle, which comprises a glass fiber column, a sand surface, an acoustic detector, a rotating mechanical device and a programming stepping motor. The lower portion of the glass fiber column is buried under the sand surface and is perpendicular to the sand surface, the acoustic detector is fixed through a C-shaped semi-opening buckle of the mechanical rotating device, the mechanical device is connected with a bent rod through a sleeve, a bearing, a U-shaped piece and an I-shaped rod, and a stepping motor controls the rotating angle and speed of the device. According to the acoustic detection principle, the dynamic process of basic local scouring can be monitored in real time, and high precision, high sensitivity and high environmental adaptability are achieved. And in combination with a deep learning technology, scouring data fusion and rapid prediction can be realized, an intelligent solution is provided for bridge foundation scouring monitoring, and intelligent development of an infrastructure monitoring technology is promoted.

The invention discloses an excrement detection device for a built-in intelligent closestool, and relates to the technical field of intelligent closestool equipment. A telescopic detection mechanism is arranged on the toilet lid base and comprises a stepping motor, a gear box, a movable fixing frame and a detection sensor, a motor output shaft of the stepping motor is connected with a driving gear in the gear box, a guide rail is arranged at the top of the gear box, and the movable fixing frame is movably connected with the guide rail; the detection sensor is connected with the front end of the movable fixing frame in a sleeved mode, a rack is arranged at the bottom of the movable fixing frame, the rack is meshed with the driving gear, the detection sensor comprises a fixing shell and an acquisition assembly, the detection device is arranged on the toilet lid base, stretching and retracting of the sensor are controlled through the stepping motor, excrement is detected, and the detection efficiency is improved. After detection is completed, the health data are automatically returned into the base, so that the detection device is well protected, the whole equipment is more attractive, and normal use is not affected.

The invention belongs to the technical field of iron identification and picking, and particularly discloses an ore crusher feeding system with an iron identification and picking function, which comprises a support frame and a control cabinet, the support frame is provided with a stock bin and an iron belt picking machine, the stock bin is provided with a feeding device, the iron belt picking machine is provided with a guide hopper, and the guide hopper is provided with a chute I and a chute II; the first chute and the second chute are provided with stepping motors, the control cabinet is provided with a Jetson series embedded image processing system, the iron belt picking machine is provided with an image shooting head, the image shooting head is connected with the Jetson series embedded image processing system, the Jetson series embedded image processing system is provided with a PLC, the stepping motors are connected with the PLC, and the stepping motors are provided with material distributing plates. The problem that in an existing iron ore fine crushing procedure, iron foreign matter is prone to being clamped in a crusher, and the crusher is damaged is solved. According to the invention, through the image shooting head and the Jetson series embedded image processing system, image recognition can be carried out on ores, iron foreign matters are effectively removed, and the service life of the crusher is prolonged.

The invention relates to the technical field of pressure control, and discloses a pressure control method, system and equipment for a vacuum butterfly valve and a storage medium, and the method comprises the steps: obtaining a pressure control error signal and an error change rate according to the internal pressure of a cavity and a preset target pressure; determining a calculation result of the composite controller based on the pressure control error signal and the error change rate; inputting a calculation result of the composite controller into a smooth switching function, calculating a mixed output quantity, and searching an optimal smooth factor and an error switching threshold value of the smooth switching function in a current environment through a particle swarm optimization algorithm; performing nonlinear compensation on the mixed output quantity of the composite controller by adopting a compensation function, converting the control quantity subjected to nonlinear compensation into the rotation step number of a stepping motor through motor driving, and controlling the rotation angle of the butterfly valve by adopting the stepping motor; the control precision and the dynamic performance are improved.

The utility model provides a gas flow controller based on a stepping motor control butterfly valve, which comprises a first valve body, a second valve body and a control unit, the first valve body is internally provided with a first gas channel, the first valve body is provided with a gas inlet interface which is communicated with the first gas channel and is suitable for being connected with an external gas source, and the second valve body is provided with a gas outlet interface which is suitable for being connected with an external gas source. The first valve body is provided with an electromagnetic valve with a plug capable of ascending and descending in the radial direction of the first gas channel, the second valve body is internally provided with a second gas channel connected with the first gas channel, the second valve body is provided with a gas outlet connector communicated with the second gas channel, and the second valve body is further provided with a rotating shaft penetrating through the second gas channel in the radial direction. One end of the rotating shaft is connected with an output shaft of the stepping motor, the other end of the rotating shaft is connected with the second valve body, a butterfly valve is fixed to the rotating shaft, a butterfly valve piece of the butterfly valve is located in the second gas channel, and the electromagnetic valve and the stepping motor are both electrically connected with the control unit. The stepping motor drives the butterfly valve plate to rotate to control the gas flow, reliability is high, and the service life is long.

This application discloses an exoskeleton position prediction and closed-loop stepper control system and method. The microcontroller unit completes the functions of electromyography (EMG) signal acquisition, neural network inference, pulse generation, and closed-loop correction. The EMG signal acquisition unit acquires surface EMG signals, performs preprocessing and feature extraction, and outputs digital EMG features. The motor position feedback unit acquires the absolute position and velocity information of the closed-loop stepper motor in real time. The neural network operation unit concatenates the digital EMG features and the absolute position and velocity information of the closed-loop stepper motor into a multi-dimensional input vector to predict the three-dimensional spatial position increment of the exoskeleton at the next moment. The dual closed-loop control unit converts the predicted value of the three-dimensional spatial position increment into stepper motor control commands and performs closed-loop correction in combination with the real-time position of the motor. Zero-delay tracking control is achieved through a predictive-execution parallel pipeline, realizing high-precision, low-delay tracking of exoskeleton movement and achieving high system integration and lightweight design.

According to the technical scheme, the automatic grading equipment suitable for the poultry comprises a support assembly, the support assembly comprises a plurality of sectional materials, movable hinges and three-way connecting pieces, the sectional materials are fixedly connected through the three-way connecting pieces to form a support body, the heights of the two sides of the support body are different, and the movable hinges are arranged on the movable hinges. The end face of the vertically-placed section bar and the groove face of the horizontally-placed section bar are connected through a plurality of movable hinges at the lower end of the support body, an inclined bottom plate is fixed to the section bar, and a first side plate and a second side plate which are close to the poultry inlet are arranged on the two sides in the section bar respectively. A first sliding way and a second sliding way are fixed to the two outer ends of the side, close to the poultry outlet, of the sectional material respectively, and an adjusting mechanism used for opening and closing the downward-sliding channel is further arranged on the side, close to the poultry outlet, of the sectional material. The baffle is controlled by the stepping motor to rotate by a certain angle, poultry channels of corresponding types are opened, the downward sliding direction of poultry is changed, and it is ensured that the poultry smoothly enters the correct level to complete grading work.

Embodiments described herein relate to an apparatus that includes a stepper motor, a driver chip communicatively coupled to the stepper motor, an encoder communicatively coupled to the stepper motor, and a feedback controller communicatively coupled to the driver chip and the encoder. In an embodiment, the feedback controller includes a state space plant configured to receive a control signal and generate a vector including a position and velocity of the stepper motor. In an embodiment, the feedback controller further includes a pulse width modulation (PWM) converter configured to receive the vector and output a first PWM signal corresponding to a number of steps to drive the stepper motor and a second PWM signal corresponding to a direction of the number of steps of the stepper motor. In an embodiment, the feedback controller further includes a Luenberger observer configured to receive a feedback signal from the encoder.

The present invention discloses an automatic sampler, comprising a positioning sampling module, a sample area, a sample identification module and a frame; the magnetic cover opener and the sampling component of the positioning sampling module are fixed on the synchronous belt of the horizontal positioning device 1, the two ends of the horizontal positioning device 1 are respectively fixed on the left and right synchronous belts of the longitudinal positioning device 1, and the transmission of the synchronous belts of the horizontal positioning device 1 and the longitudinal positioning device 1 is controlled by a stepper motor to determine the horizontal and vertical coordinates of the magnetic cover opener and the sampling component; the sample area comprises a sample frame and a sample bottle; the code scanner of the sample identification module is fixed on the synchronous belt of the horizontal positioning device 2, the horizontal positioning device 2 is fixed on the synchronous belt of the longitudinal positioning device 2, and the transmission of the synchronous belts of the horizontal positioning device 2 and the longitudinal positioning device 2 is controlled by a stepper motor to determine the horizontal and vertical coordinates of the code scanner. The present invention has the functions of automatic positioning, sample identification, cover opening, mixing, sampling and cleaning, and can be used in conjunction with various analyzers.

The invention discloses a multi-path stepping motor control device and method, and relates to the field of motor control, and the device comprises a microcontroller and an FPGA chip. The microcontroller is connected with the FPGA chip; the microcontroller is used for checking whether multi-path trapezoidal acceleration and deceleration curve parameters which are input by a user and represent the motion of the stepping motor accord with the motion characteristics of the stepping motor; if the trapezoidal acceleration and deceleration curve parameters do not conform to the motion characteristics of the stepping motor, the trapezoidal acceleration and deceleration curve parameters are corrected and serve as final trapezoidal acceleration and deceleration curve parameters; if the motion characteristics of the stepping motor are met, the parameters of the trapezoidal acceleration and deceleration curve are kept unchanged and serve as final parameters of the trapezoidal acceleration and deceleration curve; the final trapezoidal acceleration and deceleration curve parameters are sent to the FPGA chip; the FPGA chip is used for generating multiple paths of pulse signals in parallel according to the final trapezoidal acceleration and deceleration curve parameters so as to drive multiple paths of stepping motors, and motor control which is simple, feasible, high in real-time performance, more efficient and low in cost is achieved.

The invention discloses a gas specific heat ratio measuring device and a gas specific heat ratio measuring method, particularly relates to the technical field of gas specific heat ratio measurement, and solves the technical problems of low measuring precision, inconvenience in operation, poor safety and narrow application range of a traditional gas specific heat ratio measuring experimental device in the prior art. According to the technical scheme, an air pressure sensor measures changes of air pressure and temperature in a bottle, and data can be displayed in real time by being connected with a computer; by optimizing sensor design and a signal processing algorithm, the measuring device can respond to air temperature and pressure changes more quickly; the stepping motor is used for controlling opening and closing of the piston, and errors caused by human factors are reduced; the change of the air specific heat ratio at different temperatures can be explored by changing the temperature; according to the invention, intelligent and automatic measurement is realized, errors caused by manual operation are reduced, and data change visualization in the whole experiment process is provided, so that students can intuitively analyze the change of each physical quantity.

The utility model discloses an automatic punching platform, and relates to the technical field of furniture manufacturing equipment, the automatic punching platform comprises a conveying rack, a transmission roller used for conveying a plate to be punched is arranged on the conveying rack, and the left edge and the right edge of the upper surface of the conveying rack are respectively and fixedly provided with a baffle; a sliding table is arranged on one side of the conveying frame, a sliding seat is installed on the sliding table, a stepping motor is fixedly installed on the sliding seat, and a drill bit used for drilling a hole in a to-be-drilled plate is fixedly installed at the output end of the stepping motor; a cantilever beam is fixedly installed on the other side of the conveying frame, and the upper end of the cantilever beam extends to the position above the conveying frame and is fixedly provided with a clamping oil cylinder used for clamping a to-be-perforated plate. The automatic punching machine has the beneficial effects that through cooperative work of the stepping motor, the PLC control system and the infrared distance sensing device, precise positioning and efficient punching operation of a plate are achieved, the production efficiency and the punching precision are remarkably improved, and the safety risk of manual operation is reduced.

The invention discloses a concrete beam quick release mold and a using method thereof, and belongs to the technical field of concrete beam molds, the concrete beam quick release mold comprises a bottom plate, a supporting plate, a first mold assembly and a second mold assembly, the supporting plate is fixedly mounted in the middle of the top end of the bottom plate, and a bottom mold plate is fixedly mounted at the top end of the supporting plate; first supports are fixedly mounted on the outer walls of the left side and the right side of the supporting plate correspondingly, and a first mold assembly is mounted on each first support. Second supports are fixedly installed on the outer walls of the front side and the rear side of the supporting plate correspondingly, and a second mold assembly is installed on each set of second supports. A servo stepping motor is started to control a worm to rotate, a worm gear meshed with the worm can drive a mounting shaft, a second bevel gear, a second transverse shaft and a second side formwork to rotate and open, the two first side formworks and the two second side formworks are controlled to synchronously rotate to be in a horizontal state, rapid demolding of a formed concrete beam is facilitated, disassembly is rapid, and the efficiency is high. The use is convenient, and the production and manufacturing efficiency of concrete beams can be improved.

The invention consists of controlling the direction and opening of a hydraulic distributor with a stepper motor acting on it via a reversible transmission. This economical and reliable solution allows for precise positioning of the distributor spool during normal operation, and a return to the neutral position under the action of the return spring(s) in the event of a power failure. Figure 8 (for the abstract)

The invention discloses a fogdrop deposition sensor which comprises a base, an upper polar plate, a lower polar plate, a horizontal movement device, a stepping motor, a controller, a first supporting frame, a second supporting frame and a fogdrop shielding plate. The upper polar plate is fixedly connected with the horizontal movement device; the first support frame and the second support frame are fixed on the base; the sensor disclosed by the invention has the advantages of good linear relationship between the output voltage variation and the fog drop deposition amount and small measurement error.

The utility model relates to the technical field of electrophoresis processing hangers, in particular to an auxiliary mechanism for hanging and replacing an electrophoresis hanger, which comprises a central motor, a turntable, a motor frame, a stepping motor and a fishbone shaft, the central motor is fixedly connected to the upper fixing plate and connected to equipment through the upper fixing plate. A shaft of the central motor is fixedly connected to the center of the turntable; the stepping motor is installed on the motor frame, and the motor frame is fixedly connected to the rotating disc. The fishbone shaft is fixedly connected with a shaft of the stepping motor; and the fishbone shaft is controlled by the stepping motor, so that the purpose of hanging and taking the plated part is achieved.