237 results about "Torque regulation" patented technology

The invention relates to the technical field of electric vehicles, in particular to an electric vehicle parking motor torque adjusting method. The problems that an existing electric automobile parking system is insufficient in parking force control precision, lagged in response and low in energy consumption efficiency under complex working conditions are solved. According to the method, a multi-dimensional vehicle running state, a driver instruction and environment sensing data are collected in real time, a vehicle-environment coupling dynamic model is established and updated in real time, then an adaptive model predictive control (AMPC) strategy is utilized, the future movement trend of a vehicle is predicted based on the dynamic model and a target parking demand, and the vehicle-environment coupling dynamic model is established and updated in real time. And the optimal torque instruction of the parking motor in the current control period is optimized and calculated, and the parking motor is driven to generate corresponding torque. High precision, high adaptability, high safety and high stability of parking torque adjustment can be achieved, the energy efficiency is effectively improved, the service life of parts is effectively prolonged, and the intelligent level is enhanced.

The invention provides an atmosphere push plate furnace driving system based on servo motor frequency conversion control. The atmosphere push plate furnace driving system comprises a real-time detection module, a multi-mode control module, a strategy generation module and a system optimization and evaluation module. The method comprises the following steps: analyzing collected real-time data of different targets, identifying a current working condition stage of a system, switching to a corresponding control mode according to the identified working condition stage so as to generate a corresponding control strategy, dynamically adjusting the rotating speed and the torque of a motor according to the control strategy, and carrying out optimization test and evaluation on the system; a real-time load monitoring and feedback mechanism is adopted, a control algorithm and a rotating speed and torque adjusting strategy are applied, effective vibration suppression measures are combined, the dynamic response characteristics of the servo motor can be fully utilized, the rotating speed and torque of the servo motor can be adjusted in real time according to load changes, and start-stop impact and mechanical vibration of the atmosphere pusher furnace are remarkably reduced.

Provided in the present invention is a gravity-free spring roller blind controller. The gravity-free spring roller blind controller comprises a torque adjustment assembly and a torsion spring connecting rod assembly. The torque adjustment assembly comprises a bracket, a torsion spring mounting seat, a guide sleeve, and a roller blind sleeve. A one-way torsion spring is sleeved on a mounting shaft of the torsion spring mounting seat, the guide sleeve is further rotatably sleeved with a torque adjustment knob, the guide sleeve is provided with a first flange, and a second flange is provided on the torque adjustment knob. The first flange reversely pushes the one-way torsion spring so that the one-way torsion spring is locked tightly onto the mounting shaft. According to the present invention, the torque of the torsion spring on the torsion spring connecting rod assembly is increased or decreased by forwardly or reversely rotating the second flange.

The invention discloses a pivot steering control system and method based on a four-wheel steering driving automobile and the automobile, and belongs to the technical field of automobiles. The in-situ steering control system obtains the state information of a vehicle through the state observation module, and the algorithm decision-making module receives the state information sent by the state observation module and then carries out decision-making calculation output processing according to the state information. And a pivot steering control decision containing a wheel steering angle adjusting instruction and a wheel output torque adjusting instruction is obtained, so that the four wheels are controlled to deflect by specific directions and angles through the control execution module, driving is conducted according to the deflection angles of the vehicles in the specific directions, and pivot steering control over the vehicles is achieved. The in-situ steering control system can dynamically adjust steering angles and torque distribution of the four wheels according to actual driving working conditions, the accuracy and response speed of in-situ steering control are improved, and the vehicle can accurately achieve in-situ steering according to an expected posture.

Embodiments of this application provide example torque adjustment methods, apparatuses, and vehicles. One example method includes obtaining a requested torque value. A first intervention torque value is determined based on a wheel acceleration of a vehicle and a vehicle acceleration of the vehicle. Based on the requested torque value and the first intervention torque value, the vehicle is controlled to perform energy regeneration.

The invention discloses a control method for controlling the follow-up speed change of a drip irrigation disc of a seeder based on Beidou speed measurement. The control method comprises the following steps: S1, collecting and preprocessing position information and speed information of a tractor; s2, inputting the preprocessed data into a fusion calculation unit, and executing space-time weight calibration; s3, inputting the fusion speed sequence into a speed prediction network, extracting multi-scale features, and generating a speed guide feature map; s4, generating a target rotating speed instruction according to the mapping function and operation parameter modulation; s5, inputting a target rotating speed instruction to a motor control unit, and generating a current signal through dual-channel torque regulation and control; s6, a motor is driven to rotate the drip irrigation disc, the actual rotating speed is collected, and an error sequence is constructed; and S7, inputting the error sequence into a calibration module, generating a correction parameter to update a current signal, and realizing synchronous control. According to the invention, high-precision synchronous control of the drip irrigation disc on the speed of the tractor is realized, and the drip irrigation consistency, the response speed and the operation stability are improved.

A vehicle mode switching method, apparatus, and system, a vehicle, a computer program, and a readable medium, relating to the technical field of vehicle control. When a vehicle meets a mode switching condition of switching from a power split mode to a direct drive mode, a clutch (102) is kept in an engaged state, and torque adjustment is performed on an engine (101) and a first motor (103), so that when a first synchronizer (105) meets a torque condition, rotation speed adjustment can be performed on the first motor (103), and when the first synchronizer (105) meets a rotation speed condition, the first synchronizer (105) can be controlled to switch from a power split gear to a combined gear, so as to switch the vehicle from the power split mode to the direct drive mode. A gear shifting operation of the first synchronizer (105) is smoothly completed without disengaging or engaging the clutch (102), so that the engine (101) can quickly output torque while the duration of mode switching is shortened, thereby improving the power response performance of the vehicle during mode switching.

The present invention belongs to the field of wind power generation system control, and discloses a fan torque regulation system based on actual aerodynamic coefficients, which includes a fan blade information collection module, an aerodynamic coefficient calculation module, a power regulation module, and a host computer module. The power regulation module includes a torque adjustment unit and a control unit connected to each other. The fan blade information collection module is connected to the aerodynamic coefficient calculation module, and the host computer module and the aerodynamic coefficient calculation module are respectively connected to the torque adjustment unit. The fan blade information collection module is used to identify the geometric shape data of the fan blades. The aerodynamic coefficient calculation module is used to calculate the corresponding actual aerodynamic coefficients according to the geometric shape data of the fan blades. The host computer module is used to input information on the required change in fan power. The torque adjustment unit calculates the actual torque required by the fan based on the actual aerodynamic coefficients, the fan motor speed information, and the information on the required change in fan power. The control unit adjusts the fan torque based on the real-time torque required by the fan.

The invention discloses a transverse movement control system and method based on rear wheel steering, a controller and a vehicle, and belongs to the technical field of vehicles. The transverse movement control system obtains state information of a vehicle through a state observation module, and after an algorithm decision module receives the state information sent by the state observation module, decision calculation output processing is conducted according to the state information, so that a transverse movement control decision containing a wheel steering angle adjusting instruction and a wheel output torque adjusting instruction is obtained. Therefore, the front wheels and the rear wheels are controlled by the control execution module to deflect by a specific angle in the transverse movement direction in the opposite directions and are driven reversely, and transverse movement control over the vehicle is achieved. The transverse movement control system can dynamically adjust steering angles and torque distribution of front and rear wheels according to actual driving working conditions, the accuracy and response speed of transverse movement control are improved, and the vehicle can accurately transversely move along an expected track.

The invention relates to the technical field of intelligent massage equipment control, and provides a fascia gun adaptive frequency adjustment and muscle relaxation intensity control method and system. A motor rotation frequency range and a corresponding output torque adjustment coefficient are obtained by receiving a pressure value, collected by a pressure sensor, of contact between a massage head and a human body, an electromyographic signal sensor collects an electromyographic signal of a target muscle group, and an acceleration sensor collects fascia gun motion posture data; according to the rotating frequency range of the motor, determining a target adjusting frequency in a preset safe frequency interval, generating a motor driving control signal according to an output torque adjusting coefficient, and controlling the motor to operate at the target adjusting frequency through a motor driving circuit; if the electromyographic signal sensor continuously collects the electromyographic signals of the target muscle group in a periodic weakening trend, the rotating frequency of the motor is reduced, the output pressure is reduced, and progressive muscle relaxation intensity adjustment is formed. According to the invention, a complete technical system for self-adaptive control of the fascia gun is constructed.

The invention discloses a vehicle starting control method and related equipment, and relates to the technical field of electric vehicles, the method comprises the following steps: acquiring an accelerator pedal opening signal and N types of sensor data in the starting process of a target vehicle; performing confidence fusion processing based on the N types of sensor data to obtain real-time gradient information; according to the accelerator pedal opening signal and the real-time gradient information, the target rotating speed of the target vehicle is determined; determining the motor output torque of the target vehicle based on the deviation value of the target rotating speed and the current rotating speed; and controlling the target vehicle to run with the motor output torque. The gradient sensing precision is improved through multi-sensor fusion, target rotating speed self-adaptive control is achieved in combination with pedal and gradient information, the starting process is adjusted and optimized through closed-loop torque, and therefore the starting safety, smoothness and energy efficiency of the electric automobile can be improved.

The invention relates to the technical field of motor control, and discloses a torque adjustment control method of a magnetic stirrer based on sample characteristics, which comprises the following steps: acquiring an armature three-phase current and a rotor position signal, and converting the armature three-phase current and the rotor position signal into a quadrature-axis actually measured current and a direct-axis actually measured current by utilizing coordinate transformation logic; extracting a magnetic declination estimated value reflecting the phase lag degree of the stirrer based on an electromagnetic coupling model; calculating a magnetic declination change rate according to the magnetic declination estimated value of the continuous sampling period; a transient compensation current is generated by adopting a nonlinear compensation operator and combining a real-time synchronous torque coefficient; according to the invention, the transient characteristics of the magnetic declination are utilized to realize the real-time sensing of the load disturbance, the magnetic coupling slippage caused by the sudden change of the characteristics of the sample is effectively inhibited, and the stability of the magnetic declination is improved. And the ineffective temperature rise of the motor is reduced while the system stability is guaranteed.

The invention provides a jitter suppression method, a motor controller and a vehicle, and the method determines whether a driving motor satisfies a jitter suppression condition based on the rotation speed change rate of the driving motor of the vehicle, and can quickly and accurately determine whether the driving motor satisfies the jitter suppression condition. Wherein under the condition that the driving motor meets the jitter suppression condition, the target torque of the driving motor is determined based on the rotating speed change rate of the driving motor and the current demand torque of the driving motor, and the current demand torque of the driving motor is determined based on a received torque adjustment instruction, so that the driving motor is controlled to perform torque adjustment based on the target torque. The rotating speed jitter of the driving motor can be quickly and effectively inhibited, so that the risk of jitter of the vehicle in the running process can be reduced, and the driving comfort of the vehicle is improved.

The invention discloses an off-line identification method and system for the active damping parameter of a whole vehicle of a permanent magnet synchronous motor. The off-line identification method comprises the steps that the end angular speed # imgabs0 # and the required torque TR of the motor under the current working condition are obtained in real time; the motor end angular speed # imgabs1 # is input into the pre-calibrated state space model to obtain the real-time vehicle wheel end angular speed # imgabs2 #, and a gain coefficient K under the current working condition is inquired from a pre-calibrated two-dimensional gain coefficient table according to the motor end angular speed # imgabs3 # and the required torque TR; according to the motor end angular speed # imgabs4 #, the vehicle wheel end angular speed # imgabs5 # and the gain coefficient K, the equivalent damping compensation torque Tcomp is calculated; and superposing the equivalent damping compensation torque Tcomp to a required torque TR to generate a total torque Ttotal, and adjusting the output of the motor according to the total torque Ttotal. According to the method and the system, the whole vehicle calibration workload is reduced, the vibration of the transmission system can be suppressed in a high-precision manner without an additional sensor, and the driving and riding comfort is improved.

The utility model discloses an installation tool applied to an overhead line fault sensing device, and belongs to the technical field of electric power overhaul. An installation tool applied to an overhead line fault sensing device comprises an insulating shell, a driving motor is installed in the insulating shell, a torque adjusting assembly is installed at the output end of the driving motor, a tray is fixedly connected to the upper end of the insulating shell, and a rotating block is rotationally connected to the lower portion of the tray. The output end of the driving motor is in transmission connection with the rotating block through a torque adjusting assembly. Through the arrangement of the insulating shell and the rotating block, the device can drag the overhead line fault sensing device through the insulating shell, and the rotating block drives the screw rod to rotate, so that the installation of the overhead line fault sensing device is realized, manual operation is not needed, and the installation efficiency is improved.

The embodiment of the invention provides a torque control method and device, electronic equipment and a storage medium, and relates to the technical field of intelligent control. Target demand torque needed when a vehicle is in an intelligent driving mode is determined, and based on the target demand torque, the target virtual pedal opening degree corresponding to the target demand torque is determined; based on the target virtual pedal opening degree, the target demand torque and a torque response slope table used when the vehicle is in the non-intelligent driving mode, the target torque response slope is determined, the torque response slope table is used for representing torque response slopes corresponding to multiple sets of working parameters respectively, and one set of working parameters comprise the pedal opening degree and the demand torque; the torque response slope is used for representing the torque change amplitude per unit time, determining the target torque response slope, and adjusting the torque output by the vehicle to the target demand torque based on the target torque response slope, so that the convenience of torque control can be improved.

A torque wrench comprises: a main body having an outwardly open receiving space; a working section having an inner rod section combined with the receiving space and a working head connected to the inner rod section and exposed outside the main body; a torque sensor arranged on the inner rod section of the working section; a trigger unit arranged in the receiving space of the main body and movably connected to the inner rod section of the working section; a torque setting unit for applying a predetermined torque to the trigger unit; and a controller arranged on the torque wrench and electrically connected to the torque sensor and the torque setting unit.When the force applied to the working section is greater than the specified torque, the torque adjustment unit drives the trigger unit so that the working section immediately stops receiving force, preventing improper operation by the user and preventing the locking force from exceeding the load capacity of the components. This ensures that the locking force of the components meets the specifications.

This invention relates to the field of new energy vehicles, specifically to a vehicle anti-rollback control method, device, and vehicle. It includes the following steps: When the vehicle is in a parking position, if the vehicle meets the torque compensation conditions, the base torque and rolling resistance weighted torque are added to obtain the target compensation torque for the motor, and torque adjustment control is performed. The rolling resistance weighted torque is updated as follows: an initial value of the rolling resistance weighted torque is set and stored; the torque T_g1 of the motor controlled by torque control is obtained; when the motor speed remains at zero, the time difference t_diff is calculated, and the current motor torque T_g2 is obtained. When the time difference is greater than the preset time difference t_diff1, the rolling resistance weighted torque is: (t_diff-t_diff1) / t_diff1*(T_g2-T_g1). If the absolute value of the difference between the calculated rolling resistance weighted torque and the stored rolling resistance weighted torque is greater than or equal to a preset threshold for the difference in rolling resistance weighted torque, then it is updated; otherwise, it is not updated. If the current vehicle meets the speed control conditions, speed control is performed, controlling the motor speed to zero. This prevents the vehicle from rolling backward and ensures vehicle safety.

The embodiment of the invention relates to an electric tool. The electric tool comprises a shell; a holder for holding the tool head; the driving piece is used for outputting torque for driving the tool head to rotate; the speed reducing mechanism is used for transmitting the torque generated by the driving piece to the holding piece; the clutch mechanism is used for being in transmission connection with the speed reducing mechanism and the retainer; the torque assembly comprises an adjusting piece, an elastic piece, a first fixing plate and a second fixing plate, the first fixing plate and the second fixing plate are connected to the two ends of the elastic piece, the elastic piece is located on the periphery of the box body, a speed reducing mechanism is arranged in the box body, the first fixing plate abuts against the clutch mechanism, and the second fixing plate abuts against the adjusting piece. And the preset clutch torque of the clutch mechanism is adjusted. According to the electric tool provided by the embodiment of the invention, the machine body length of the electric tool can be greatly shortened, so that the electric tool can work in a relatively narrow space; in addition, the torque adjusting range of the electric tool with the same machine body length can be increased, and the application range of the electric tool is widened.

The application relates to a compact active artificial knee joint with a torque adjusting device, which comprises a knee joint module, a receiving cavity connecting block, a lower leg connecting piece and a torque adjusting device, wherein the torque adjusting device comprises a spiral spring, a bent spring groove and the like, the knee joint module comprises a knee joint shell, a knee joint shaft center, a knee joint stator sleeve end cover and the like, one end of the spring is fixed at the upper receiving cavity connecting lug through an opening on the motor stator sleeve end cover, and the other end is fixed in the bent spring groove at the position of the motor stator sleeve end cover and the knee joint shaft center. The torque adjusting device can realize torque assistance and adjustment according to the angle size and direction of the limb rotation; meanwhile, the driving peak torque of the motor can be reduced, the size and the maximum torque of the driving motor are smaller due to the fact that the artificial limb needs to be easily worn, energy consumption and space are saved.

The invention provides a clutch oil pump control method, a computer readable storage medium and a vehicle, the control method is used for controlling a clutch oil pump of the vehicle, the vehicle further comprises a power unit and a clutch, the power unit is in transmission connection with the clutch, and the clutch is provided with a hydraulic cavity; the clutch oil pump is connected to the hydraulic cavity and used for supplying oil to the hydraulic cavity. The control method comprises the following steps that when the hydraulic cavity is in an oil charging state, the total output torque of the power unit is obtained; controlling the rotating speed of a clutch oil pump in response to the change of the total output torque, and reducing the rotating speed of the clutch oil pump if the total output torque is increased; and if the total output torque is reduced, increasing the rotating speed of the clutch oil pump. According to the method, the rotating speed of the clutch oil pump is adjusted according to the torque of the power unit, so that the pressure in the hydraulic cavity of the clutch is adjusted, pressure fluctuation is reduced, the risk of abnormal engagement of the clutch is reduced, and the driving comfort of the vehicle is improved.

The embodiment of the invention provides a torque distribution method and device of a hybrid electric vehicle and electronic equipment, and relates to the technical field of new energy automobiles, and the method comprises the steps that the running state of the hybrid electric vehicle is determined in response to the situation that a demand energy mode of the hybrid electric vehicle is a hybrid power mode; in the non-energy recovery state, the engine demand torque lower limit is determined according to the engine working mode and the first parameter; the first engine demand torque is adjusted according to the engine demand torque lower limit, and torque distribution is conducted based on the adjusted second engine demand torque; in the energy recovery state, a third engine demand torque is determined according to the engine working mode and a pre-calibrated torque adjusting curve; and performing torque distribution based on the third engine demand torque. According to the embodiment of the invention, the reduction of the after-treatment temperature of the engine can be reduced, and the emission of nitrogen oxides is effectively reduced, so that carbon deposition is eliminated in advance, and the number of times of parking regeneration is reduced.

The utility model relates to the field of butterfly valves, and discloses a butterfly valve casting with an adjustable torque function, which comprises a valve body, the top side of the valve body is fixedly connected with a first metal pipe, the right side of the top side of the valve body is fixedly connected with a second metal pipe, and the top side of the first metal pipe and the top side of the second metal pipe are provided with two valve covers. The bottom valve cover is fixedly connected to the top ends of the first metal pipe and the second metal pipe, the top valve cover is connected with the bottom valve cover through bolts and nuts, a cavity is formed between the two valve covers, a torque adjusting assembly is arranged in the cavity, and a lubricating assembly is arranged on the left side of the top side of each valve cover. According to the utility model, the lubricating oil flowing from the oil storage tank through the pipeline is atomized and sprayed to the driving structure through the atomizing nozzle, so that the service life is prolonged, the torque is optimized, and the torque can be changed by replacing half gears with different tooth numbers, and the butterfly valve has the capability of changing the self torque.

The application discloses a vehicle control method, a control system, a vehicle and a readable storage medium, and the method comprises the following steps: when the vehicle is in a differential steering working condition and there is a wheel slipping, determining a torque reduction torque of the slipping wheel; and adjusting the torque of the coaxial wheel according to the torque reduction torque. In the application, when the vehicle is in the differential steering working condition, the wheel slipping problem in the differential working condition is optimized by classifying the differential state of the vehicle, and different driving torque control logics are used, such as a coaxial control strategy for the slipping wheel, and a control strategy for the working condition of the inside wheel reverse slipping, so that the wheel reverse slipping can be identified in time, the use scene of the differential function is expanded, the phenomenon of high-speed wheel slipping and body posture deflection of the vehicle is avoided, and the reliability of the differential function of the vehicle is improved.

The application relates to the field of electrically driven vehicles, and particularly discloses a method for controlling the drag force of an electrically driven vehicle, which is used for vehicle electronic equipment and comprises the following steps: determining a vehicle speed control threshold according to vehicle information and road surface information; obtaining a driver desired torque from a vehicle management unit of the electrically driven vehicle; determining whether to perform drag force control based on a speed signal of a motor of the electrically driven vehicle and the vehicle speed control threshold; when it is determined that the drag force control is not performed, a motor controller of the electrically driven vehicle adjusts the torque of the motor in response to the driver desired torque; and when it is determined that the drag force control is performed, the torque of the motor is adjusted based on the vehicle speed control threshold and the driver desired torque. The application has the advantage that the drag force can be controlled in time when the motor speed exceeds the allowable range of the current working condition (for example, a braking working condition), so that the negative influence caused by the drag force is reduced.

The invention provides an electric automobile creeping control method which comprises the following steps: when the driving gear of an electric automobile is a forward gear or a reverse gear, detecting the depth of an accelerator pedal and the rotating speed of a motor; when the crawling function activation condition is met, the basic crawling moment of the electric vehicle is determined according to the motor rotating speed and the motor environment temperature; compensating the basic creeping moment based on the gradient and the rotating speed of the motor to obtain a corrected basic creeping moment; the brake pedal stroke is corrected according to the gradient, and a gradient corrected brake stroke is obtained; and based on the creep torque attenuation coefficient determined by the gradient correction brake stroke and the corrected basic creep torque, determining a final creep torque for performing creep control on the electric vehicle. According to the method and the device, the problems that the preset basic creeping moment of the electric vehicle creeping system is poor in adaptability on different road surfaces, and when the creeping speed is set to achieve creeping speed control, the torque adjusting fluctuation is large, and the creeping speed is overshoot are solved.

Embodiments of this application provide a torque adjustment method and apparatus, and a vehicle. The method includes: obtaining a requested torque value; determining a first intervention torque value based on a wheel acceleration and a vehicle acceleration of the vehicle; and controlling, based on the requested torque value and the first intervention torque value, the vehicle to perform energy regeneration. Embodiments of this application may be applied to an intelligent vehicle or an electric vehicle. Torque intervention is performed in an energy regeneration process, to help avoid an increase in a slip rate of a wheel. In addition, the vehicle can be always kept in an energy regeneration state, to help improve driving experience of a user.

The utility model belongs to the technical field of wearable exoskeleton instruments, and particularly relates to an exoskeleton driving integrated device with a torque adjusting function, which comprises a transmission module, a critical torque adjusting module and a shell, the transmission module and the critical torque adjusting module are fixedly installed in the shell. The transmission module 1 comprises a plantar flexion driving unit and a dorsal flexion driving unit and is used for driving Bowden cables to contract and loosen; and the critical torque adjusting module is used for adjusting critical limiting torque to realize passive protection. The forward and reverse tooth double-sliding-block lead screw mechanism is adopted, one lead screw can drive the two sliding blocks moving in the reverse direction, parts are arranged in an integrated mode, the occupied space is greatly saved, the structure is more compact, and the compact space requirement of the ankle exoskeleton can be better met.

The application discloses a vehicle and an oil injection control method and device thereof. The oil injection control method comprises the following steps: obtaining the working mode of an engine; if the engine works in a normal working mode, calculating a first air-fuel ratio and combining a first control model to calculate a first main injection amount and a first post-injection amount; if the engine works in an air-fuel ratio control working mode, obtaining a preset second air-fuel ratio and combining a second control model to calculate a second main injection amount and a second post-injection amount. In the working condition with the post-injection being turned on, the difference between the main injection injection efficiency and the post-injection injection efficiency is utilized to appropriately transfer the oil amount of the main injection and the post-injection, so as to realize the torque regulation by changing the fuel amount of the main injection and the post-injection, solve the problem that the engine air system hysteresis limits the torque change range, reduce the smoke degree and improve the dynamic performance of the engine.

The application relates to the field of electric tools, and particularly discloses a torque adjusting mechanism and an electric tool, wherein the torque adjusting mechanism comprises a main body, a circuit board arranged on the main body, a potentiometer electrically connected with the circuit board, and an adjusting ring sleeved outside the main body and capable of rotating circumferentially outside the main body, wherein the triggering end of the potentiometer is sleeved with a linkage member, the outer wall surface of the linkage member is in abutment with the inner wall surface of the adjusting ring, the adjusting ring generates deformation by extruding the linkage member, the deformed linkage member and the triggering end form a rotating resistance, and the adjusting ring drives the triggering end to rotate under the torque of the rotating resistance, so as to adjust the resistance grade of the potentiometer. The application adopts the stepless adjusting mode of the potentiometer, can realize more accurate torque grading, the rotating linkage between the adjusting ring and the linkage member is realized in the mode of extrusion, the contact position of the adjusting ring and the linkage member does not need to be lubricated, and the problems of jamming and abnormal sound in the adjusting process do not exist.