209 results about "Drag torque" patented technology

The invention discloses a motor coil winding device and method, and belongs to the technical field of motor manufacturing, the motor coil winding device comprises a winding machine body, the upper surface of the winding machine body is fixedly connected with a pair of supporting plates, and the outer surfaces of the supporting plates are provided with self-adaptive floating wire protection assemblies; a wire dynamic regulation and control assembly is installed on the upper surface of the winding machine body, a fixing piece is installed on the upper surface of the winding machine body, and a winding displacement quality sensing assembly is installed on the portion, close to the fixing piece, of the upper surface of the winding machine body. The magnetorheological fluid in the magnetorheological fluid damper rapidly changes the rheological property under the action of a real-time control magnetic field, vibration transmission is effectively restrained, the phenomenon that a wire is broken due to too large tension is avoided, when it is monitored that the tension is too small, the magnetic powder brake increases the resisting moment and slows down the rotating speed of the pay-off reel to improve the tension, and if the tension is too large, the magnetic powder brake stops working. The magnetic powder brake reduces the resistance moment and accelerates the pay-off, and ensures that the wire is always at the optimal traction angle.

The invention discloses an automatic measuring device and method for a main reducing tapered roller paired bearing. The device comprises a control cabinet, a rack, a supporting platform, an axial loading unit, a bearing rotation driving unit, a non-contact measuring unit and a driving transmission connecting mechanism. A sliding pair is formed by a spline shaft of the driving transmission connecting mechanism and a special dummy shaft, and decoupling and reliable connection of axial loading and rotary driving are achieved in combination with a four-finger pneumatic chuck. The method comprises the following steps: positive and negative clearance measurement: bidirectionally applying force through the axial loading unit, and accurately detecting displacement by using the non-contact measurement unit to calculate the positive clearance; and after a spacer sleeve is selected based on a positive clearance result, the dragging torque is measured through a bearing rotation driving unit so as to verify the negative clearance. According to the invention, the integrated and high-precision automatic measurement of the positive and negative clearances of the main reducing tapered roller paired bearing on the same equipment is realized, the repeated disassembly and assembly of the assembly are effectively avoided, and the measurement efficiency and the assembly quality are improved.

A steer by wire includes a steering wheel holding system. An emulator controller receives vehicle data from vehicle systems and determines whether a vehicle is in one of a driving mode and a non-driving mode. When the vehicle is in the driving mode, the emulator controller transmits a command to an emulator switching system to electrically couple the phases of an emulator motor to a power source to enable the emulator motor to implement steer by wire operations placing the steering wheel in an un-hold mode. When the vehicle is in the non-driving mode, the emulator controller transmits a command to the emulator switching system to electrically couple the phases of the emulator motor to ground to short the phases of the emulator motor to ground to generate a resistive torque to resist rotational movement of a steering wheel of the vehicle placing the steering wheel in a hold mode.

The invention discloses a Yellow River water conservancy project real-time monitoring system based on edge computing, and particularly relates to the technical field of cloud computing. The system constructs a flow state characteristic interval by collecting water and sediment data; loading an algorithm component based on flow state characteristics, and changing a master control pointer by using atomization operation to realize calculation power logic hot switching; analyzing a difference value between the instantaneous torque of the motor and the no-load reference to obtain a sediment deposition resistance torque; mapping the resistance moment to a digital shadow table to extract a gain compensation parameter; and resetting controller parameters and modulating the pulse width signal according to the compensation coefficient, and outputting a driving voltage to control the gate. Through the edge end algorithm hot switching technology, the problems that a traditional system is difficult to adapt to the variable water and sediment working conditions of the Yellow River and logic updating shutdown are solved, and monitoring continuity is guaranteed. The defect of power mismatching of a single driving mode is overcome, motor overload and mechanical jamming are prevented, gate control accuracy and operation stability are greatly improved, and the service life of equipment is greatly prolonged.

Disclosed in the present invention are a road feedback control method and apparatus. The method comprises: by means of a torque sensor stiffness-based steering angle configuration strategy, constructing a driver input torque expression; then acquiring a driver input torque, and, on the basis of the driver input torque expression, calculating a motor rotation angle; then constructing a road feedback motor output torque expression with respect to the motor rotation angle and steering resistance torque expressions for a steering system; and finally, on the basis of a particle swarm optimization, the road feedback motor output torque expression and the steering resistance torque expressions, optimizing parameters of a PID controller. Thus, the present invention uses a swarm intelligent algorithm to achieve rapid optimization of PID control parameters, so as to eliminate reliance on debugging by technicians, thus greatly shortening parameter adjustment periods.

The present application relates to a braking method for an adaptive cruise control system (ACC), the method comprising: receiving an engine drag torque limit value of the vehicle; performing a correction of the engine drag torque limit value according to the vehicle's longitudinal speed and the actual torque value of the vehicle's engine; and determining, according to the corrected engine drag torque limit value, whether braking is performed via the vehicle stability control system (ESP). The present application further relates to a computer program product, a computer-readable storage medium, and a domain controller.

This invention provides a virtual-real fusion-based force feedback simulation control method for ship rudder control sticks, comprising: constructing a set of fluid control equations for the flow field on the rudder surface; discretizing the set of fluid control equations using a standard structured mesh to obtain a discretized set of fluid control equations; solving the discretized set of fluid control equations based on the finite difference method and boundary conditions to obtain the drag torque value of the fluid acting on the rudder plate; converting the drag torque value into a damping torque value; the control unit outputting a motor drive command based on the magnitude of the damping torque value; and the motor driver, based on the motor drive command output by the control unit, driving the force feedback simulation motor to generate a corresponding simulated damping torque value, which acts on the control stick to produce force feedback. This invention provides real-time control stick force feedback for the helmsman, allowing for direct perception of the ship's navigation status and enhancing steering stability.

The invention concerns a Brake carrier (10) for disc brake arrangement (11), the disc brake arrangement (11) having brake pads (24) that are displaceable relative to a brake disc (100), wherein the brake carrier (10) is configured to support the brake pads (24) during their displacement; wherein the brake carrier (10) comprises at least a first portion (14) that is arrangeable on a first side (13) of the brake disc (100), a second portion (16) that that is arrangeable on a second side (15) of the brake disc (100) and two connecting portions (18, 20) each connecting the first and second portions (14, 16); wherein at least one of the connecting portions (18, 20) comprises an air channel (12) having a first end (34) that is arranged so as to face towards the brake disc (100). Also disclosed is a disc brake arrangement (11) comprising such a brake carrier (10).

This application discloses an engine starting control method and system under static conditions, relating to the field of hybrid electric vehicle technology. The method includes: calculating the engine resistance torque based on an engine starting kinematic model; constructing a state equation based on an engine starting dynamics model, using motor speed, engine speed, and driveshaft torque as state variables, motor torque as a control variable, engine resistance torque as a disturbance variable, and motor speed and engine speed as output variables; constructing a Luenberger-type system state observer; and performing speed curve trajectory tracking based on the Luenberger-type system state observer, a preset engine speed curve, and a preset motor speed curve to obtain the optimal control law, characterizing the optimal torque of the motor during the reverse drag starting process of the engine via the driveshaft. This application ensures rapid starting while reducing the peak torque of the driveshaft, effectively guaranteeing the reliability of the driveshaft.

This application relates to the field of intelligent control technology for fitness equipment, and provides a method for intelligent matching of training intensity for an ab wheel based on adaptive adjustment of elastic resistance. The method acquires real-time motion state data of the user during ab wheel training through a sensor module; inputs the motion state data and physiological state data into a training intensity matching model, which calculates the matching degree between the current training intensity and the target training intensity based on preset training target parameters and the user's input basic body parameters; when the matching degree is lower than a preset matching threshold, a resistance adjustment command is generated according to the training intensity matching model. The resistance adjustment command controls the deformation degree or the number of meshing teeth of the elastic element in the elastic resistance adjustment device to change the elastic resistance torque when the ab wheel rolls. This method fills the technological gaps in dynamic matching of training intensity, nonlinear resistance adjustment, and closed-loop feedback control, providing a new approach for the design of intelligent fitness equipment.

The invention relates to a control system which comprises a hydraulic valve and a hydraulic pump, wherein the hydraulic pump feeds the hydraulic valve via a first feed line, the hydraulic pump is driven by an internal combustion engine, the control system comprises a computing unit, the control system further comprises an intermediate feed line, and a load detection line bypassing the intermediate feed line; wherein the valve comprises an open position and a closed position; a pressure of the load detection line controls a resisting torque of the hydraulic pump; the computing unit detects a stalling risk of the engine as a function of an engine speed of the internal combustion engine, and in response, controls a movement of the hydraulic valve towards the closed position; the movement of the hydraulic valve towards the closed position causing a drop in the pressure of the load detection line.

The application relates to the technical field of motors, in particular to a rotor and a motor. The rotor is arranged on the inner circumferential side of a stator of the motor, and comprises a rotor core and a magnetic unit. The material of the rotor core is a non-magnetic conductive material, and a plurality of fixing grooves are arranged on the rotor core and are distributed along the circumferential direction of the rotor core. The magnetic unit is arranged in the fixing grooves, and the magnetic unit comprises a permanent magnet and a magnetic conductor. In the same magnetic unit, the permanent magnet is located on the same side of the magnetic conductor in the circumferential direction of the rotor core, and the end of the permanent magnet close to the magnetic conductor is of the same type of magnetic pole. The magnetic field generated by the excitation of the stator can complete the closure of the magnetic flux through the magnetic conductor, the magnetic potential difference formed by the magnetic permeance difference of the magnetic circuit can generate a drag torque F1, and the magnetic potential difference formed by the magnetic field generated by the excitation of the stator and the magnetic field of the permanent magnet can generate a drag torque F2. The resultant force of the drag torque F1 and the drag torque F2 can drive the rotor to rotate.

The invention relates to an automatic train coupling with a coupling head comprising a coupling lock, wherein the coupling lock is designed as a rotary lock with a coupling eye and a frog, wherein the frog is rotatable about a main axis between a coupled position and an uncoupled position, the coupling eye is rotatably connected to the frog at a first end about a coupling eye axis and has a second free end, and the frog has a jaw that is arranged to receive a second end of a coupling eye of a counter-coupling head; with a decoupling device comprising a motor connected to the frog via a drive link to rotate the frog from the coupled position to the uncoupled position; with a damping device that dampens a rotation of the core by means of a resistance torque. The coupling according to the invention is characterized in that the damping device is arranged to dampen the rotation of the frog from the uncoupled position to the coupled position with a greater resistance torque than the rotation of the frog from the coupled position to the uncoupled position.

The invention discloses a cabin door unfolding torque automatic measuring system for an extreme environment, and aims to solve the problem that a tester cannot go to the scene in person in the extreme environment, the cabin door is ensured to rotate slowly at a constant speed by controlling the rotating speed of a mechanical arm through the automatic measuring system in the cabin door unfolding or closing process, and the cabin door unfolding torque is measured. The rotating process can be continuous, and the mechanical arm is always in contact with the force sensor fixed on the cabin door in the testing process, so that the magnitude of the force required for keeping the cabin door in a static state or a quasi-static state when the cabin door rotates to any angle can be measured, and the resultant moment of unfolding of the cabin door can be calculated by combining the force arm of the force. The cabin door expansion resultant moment can be measured by respectively measuring under the two states of carrying and not carrying the cable and the pipeline load, and the resistance moment brought by the cable and the pipeline load is calculated; if the initial driving torque of the cabin door at different angles is known, the resistance torque generated by the cabin door in the unfolding process can be calculated.

The application relates to the technical field of automobile control, and provides a brake calibration method for an electric automobile, which comprises the following steps: S1, sampling speed values according to a set step length in a speed range, and calculating maximum reverse drag torques T1 corresponding to all speed values; S2, selecting a speed value, determining expected reverse drag torques T2 under different brake pedal opening degrees at the current speed value, and outputting the smaller value in the maximum reverse drag torque T1 and the expected reverse drag torque T2; S3, based on the output reverse drag torque T f calculating a current wheel end resistance F m of the vehicle based on the resistance received by the whole vehicle, calculating a deceleration a of the vehicle, adjusting the expected reverse drag torque T2 corresponding to each brake pedal opening degree at the current speed based on the deceleration a until the deceleration a of the vehicle reaches an expected deceleration a 期 , and executing the step S2. When the vehicle is controlled based on the expected reverse drag torque, the driving and riding stability of the vehicle during braking is improved, that is, the driving and riding comfort of the driver and passengers is improved.

A steer-by-wire system is provided. The steer-by-wire system includes: a first powerpack having a first motor; a second powerpack having a second motor; and a steering rack operably coupled to the first motor of the first powerpack and the second motor of the second powerpack. The first powerpack further includes: a first electronic control unit (ECU) configured to control the first motor; and a first inverter circuit connected between the first ECU and the first motor. The first inverter circuit includes a plurality of first switches, and the first ECU is configured to dynamically adjust a state of the plurality of first switches based on an operating status of the plurality of first switches and an operating status of the first motor to reduce a first drag torque generated by the first motor.

This application discloses a multi-field coupled dynamics calculation method and related products for superconducting maglev trains. The method includes: determining the operating conditions of the superconducting maglev train simulation model based on its operating state information; predicting the aerodynamic forces of the superconducting maglev train simulation model by calling a response surface fitting model corresponding to the operating conditions, and predicting the electromagnetic forces of the superconducting maglev train simulation model by calling an electromagnetic force model corresponding to the operating conditions; superimposing the corresponding components of the aerodynamic forces and electromagnetic forces to obtain the target load, which includes the target magnetic drag, target levitation force, target guiding force, target magnetic drag torque, target levitation torque, and target guiding torque; and inputting the target load as an external load into the multibody dynamics model to obtain the dynamic response results. Thus, the dynamic response results can effectively reflect the actual motion of the superconducting maglev train under complex operating conditions.

The utility model discloses a dragging torque detection device of a vehicle brake disc in the technical field of detection equipment, which comprises a mobile platform and a detection mechanism arranged on the mobile platform, and the detection mechanism comprises a motor, a torque sensor and a hub clamp; the other end of the torque sensor is connected with the center of the hub clamp; during detection, the wheel hub clamp is driven by the moving platform to reach a target position and clamp a target wheel hub, after clamping, the wheel hub clamp is driven by the motor to drive the target wheel hub to rotate, and the torque sensor records dragging torque. When the device is applied, the brake disc of the vehicle does not need to be detached, measurement is directly carried out, and the device has an efficient and accurate detection effect.

The invention discloses an electric vehicle dragging torque control system and method, the system comprises a VCU, a BCM, an MCU, a sensor module and the like, a DTC software module of dragging torque control software is directly integrated in the MCU, and the sensor module is set to directly transmit a wheel speed signal and a vehicle state signal to the MCU; compared with a scheme in the prior art that function discrimination depends on a BCM and needs to be transferred to an MCU through a VCU, intermediate links and processing delay of signal transmission are greatly reduced, the real-time performance of dragging torque control is improved, the signals transmitted by the sensor module are automatically received and processed through the DTC software module, the activation condition of a dragging torque control program is judged, and the real-time performance of the dragging torque control program is improved. And when the activation condition is met, a DTC torque request signal is transmitted to the MCU, and the MCU responds and outputs a torque signal to the motor, so that the wheel end state fluctuation under the dynamic change of the pavement adhesive force can be quickly responded, and the problems of signal delay and control lag caused by a long transmission link in the prior art are effectively avoided.

This application discloses a power system and a vehicle, belonging to the field of vehicle drive. The power system includes a drive mechanism and a disengagement mechanism. A drive component is connected to one end of a transmission input shaft, and one end of a transmission output shaft is connected to the wheel to be driven in the vehicle. The disengagement mechanism is connected to both the transmission input shaft and the transmission output shaft. Thus, by controlling the transmission connection between the ends of the transmission input shaft and the transmission output shaft through the disengagement mechanism, the drive component can drive the transmission input shaft, the disengagement mechanism, and the transmission output shaft to rotate synchronously. This enables the driving force of the drive component to be output to the wheel to be driven in the vehicle, thereby driving the wheel to rotate. Furthermore, the disengagement mechanism also controls the disconnection of the transmission connection between the transmission input shaft and the transmission output shaft, i.e., disconnecting the mechanical connection between the drive component and the wheel, reducing the drag torque and mechanical resistance generated by the drive component during vehicle operation, effectively reducing the vehicle's energy consumption.

The application discloses a control method of a vehicle emergency braking working condition, computer equipment and a vehicle, and relates to the technical field of engine control, wherein the control method comprises the following steps: determining that the vehicle enters the emergency braking working condition, increasing a preset idle speed of the engine to a first speed threshold, activating idle closed-loop control based on the current speed of the engine and the first speed threshold, obtaining an idle fire path torque under the emergency braking working condition based on the idle closed-loop control, and controlling the engine to output the idle fire path torque. The application can identify the emergency braking working condition of the vehicle, increase the preset idle speed of the engine to the first speed threshold, reduce the phenomenon that the load drag torque is large and the engine output torque is insufficient to meet the stable operation of the idle speed under the emergency braking working condition, reduce the probability of engine stall, and improve the user experience.

A hybrid electric vehicle of this disclosure includes an engine; a first motor; a planetary gear with three rotating elements connected to three axes of the first motor, the engine, and a drive shaft connected to an axle; a second motor connected to the drive shaft; first and second inverters driving the first and second motors; a power storage device connected to the first and second inverters via power lines; and a controller is programmed to controlling the engine and the first and second inverters. The controller is programmed to execute a predetermined control controlling the first inverter to output a torque from the first motor cancelling dragging torque of the first motor when the shift position is changed from a position different from neutral position to the neutral position and the engine is operating.

A power take-off includes a housing that is adapted to be supported on a source of rotational energy, an input mechanism that is supported within the housing and adapted to be rotatably driven by the source of rotational energy, and an output mechanism that is supported within the housing and rotatably driven by the input mechanism. At least one of the input mechanism and the output mechanism includes a pair of mating gears. An eddy current damper is supported within the housing and configured to exert a drag torque on either or both of the mating gears during operation of the power take-off. The eddy current damper may provide a variable amount of such drag torque, a constant amount of such drag torque, or a combination of both.

The invention relates to a force-feedback steering unit for a motor vehicle, comprising a steering actuator, a control unit, an electric drive unit, and a brake unit, wherein the steering actuator can be operated by an operator to input a steering command, a steering resistance torque can be generated by means of the electric drive unit and / or the brake unit to provide the operator with a driving feel, and an actual base friction torque of the brake unit effective when operating the steering actuator is subject to random change. The invention further relates to a motor vehicle.

The application relates to a two-dimensional rotary table for a ground satellite simulator, wherein a rolling frame is arranged in a driven frame, a cross shaft is arranged in the rolling frame, first bearings are arranged on the two sides of the inside of the driven frame, the two ends of a first rotating shaft of the cross shaft respectively extend out of the back of the rolling frame and are supported through the first bearings, a first brake assembly for limiting the rotation of the first rotating shaft is arranged in the inside of the driven frame, second bearings are arranged at the two ends of the rolling frame, the two ends of a second rotating shaft of the cross shaft are respectively supported through the second bearings, a second brake assembly for limiting the rotation of the second rotating shaft is arranged in the inside of one end of the rolling frame, an installation plate is arranged on the upper end of the driven frame, a reset assembly is arranged on the installation plate, a reset rod is arranged on the upper side of the rolling frame, passes through the installation plate and is reset through the reset assembly, the satellite simulator is installed on the rolling frame, and the driven frame is arranged in an equipment unit frame in a lifting mode. The structural design of the application can reduce the friction resistance moment and can better realize the rolling, yaw and other simulation of the satellite simulator.

The utility model provides an impeller, a base meter and an irrigation water meter, and relates to the technical field of water meters, the impeller provided by the utility model is provided with a plurality of blades, and the plurality of blades are arranged at intervals along the circumferential direction of the impeller; the blade is provided with an upstream face and a downstream face, the area of the upstream face is larger than that of the downstream face, and the end, away from the axis of the impeller, of the downstream face is provided with a fillet part, the driving torque is increased, meanwhile, the resistance torque is reduced, the sensitivity of the water flow driving impeller is improved, and the impeller is particularly suitable for irrigation water meters, facilitates improvement of water meter performance and meets the requirement for the high range ratio.

The present application relates to wet clutch friction plate technical field, specifically disclose a kind of power shift oil tank wet clutch friction plate mechanism, including annular assembly core plate, the outer side of the annular assembly core plate several annular array distribution friction piece, the friction piece includes first friction strip, second friction strip, third friction strip, fourth friction strip, fifth friction strip and sixth friction strip;Through the cooperation of first oblique slot, second oblique slot, third oblique slot and fourth oblique slot, first triangular groove and second triangular groove and annular groove, the shear resistance of lubricating oil between annular friction plate can be reduced, so that it can be conveniently reduced drag torque;Through first oblique straight-through groove, second oblique straight-through groove, third oblique straight-through groove, fourth oblique straight-through groove and first straight-through groove, the contact area with friction plate can be increased, the residence time of lubricating oil is prolonged, and the heat on the surface of friction plate is better removed, so that the heat dissipation of friction plate is further improved.

The utility model relates to the technical field of caliper testing, in particular to a dragging test system for brake calipers. Comprises: a motor controllably outputting a rotational drive; the transmission device is connected with an output shaft of the motor, and a torque sensor is arranged on the transmission device; the brake disc is connected with the output side of the transmission device and can be driven to rotate based on rotation of an output shaft of the motor; the test caliper is arranged on one side of the brake disc, and a brake claw of the test caliper is detachably connected with the brake disc; and the data acquisition control device is connected with a motor controller used for driving the motor, and the data acquisition control device is also connected with the torque sensor to receive the torque data. According to the utility model, when the test caliper is separated from the brake disc, the dragging torque applied to the brake disc acts on the transmission device and is captured by the torque sensor, so that the dragging test result of the brake caliper is accurately reflected through the numerical value of the torque sensor, the overall structure is simple, the test precision is high, and the response speed is fast.

This application discloses an actuator, a cover assembly, and a vehicle. The drive mechanism includes a motor and a torque application assembly. The motor includes a motor shaft. The torque application assembly is configured to apply a first torque to the motor shaft when it rotates in a first rotational direction, and not to apply a torque to the motor shaft when it rotates in a second rotational direction; or, it is configured to apply a first torque to the motor shaft when it rotates in the first rotational direction, and apply a second torque to the motor shaft when it rotates in the second rotational direction. The first rotational direction is opposite to the second rotational direction. The first torque is greater than the second torque. Thus, when the motor is not energized, the motor shaft, which is conducive to rotation in the first rotational direction, is self-locked under the action of the first torque, while the motor shaft, which is conducive to rotation in the second rotational direction, is not resisted or continues to rotate under the action of a smaller second torque.

The invention discloses a rotary steerable drilling tool, a posture correction method and system thereof and a medium, and particularly relates to the technical field of oil field drilling engineering, and the method is technically characterized in that the method comprises the steps that the internal friction torque and the eccentric torque of the rotary steerable drilling tool during underground work are obtained; dispersing the drill string into a structural model comprising at least one beam unit by utilizing a finite element method, and analyzing the dynamics of the rotary steering drilling tool by utilizing the structural model in combination with a virtual work principle to obtain a dynamic analysis result of the rotary steering drilling tool; constructing a first relation model by using the internal friction torque, the eccentric torque and the drilling fluid flow; obtaining attitude data of any hole drift angle and a tool face angle of the rotary steering drilling tool, and constructing a second relation model between the theoretical measured value of the well track and the actual measured value of the well track; and constructing a well track correction matrix error model through the first relation model, the second relation model and a preset flow feed-forward compensation algorithm.