54 results about "Electronic power steering" patented technology

A number of illustrative variations may include a system and method of modifying steering wheel effort and end of travel limits dynamically during electronic power steering failure, steer-by-wire failure, or brake-to-steer implementation within a vehicle where steering systems have degraded or failed to provide a driver with a normal or near-normal steering driving experience while brake-to-steer systems are in use.

A computer-implemented method that, when executed by data processing hardware, causes the data processing hardware to perform operations comprising determining a desired effective steering angle based on a desired path, measuring a front road wheel angle and a rear road wheel angle, determining an actual effective steering angle, determining an effective steering angle error based on the desired effective steering angle and the actual effective steering angle, generating a torque command for an electronic power steering system based on the effective steering angle error, and controlling an active rear steering system independently from the electronic power steering system.

The invention relates to the technical field of steering wheel adjustment, in particular to an adjustment method and device for the control hand feeling softness of a steering wheel and a storage medium. The method comprises the steps that data related to vehicle steering wheel control are collected; understanding and reasoning the data to obtain a first softness range; performing multi-objective optimization on the steering wheel adjusting parameters, wherein a second softness range corresponding to the optimized steering wheel adjusting parameters is within the first softness range; target softness is selected from the second softness range, and steering wheel adjusting parameters corresponding to the target softness are sent to a steering wheel electronic power assisting system. According to the invention, personalized, automatic and fine-grained steering wheel control hand feeling softness adjustment is realized.

The invention relates to the technical field of steering systems, in particular to a torque control method of an electronic power steering system. The invention discloses a torque control method of an electronic power steering system. The torque control method specifically comprises the following steps that (1) an EPS controller receives a working condition signal of the steering system in real time; (2) the basic assistance calculation module and various advanced function assistance calculation modules calculate the torque value of each independent function module; (3) the torque coupling processing module calculates a nominal torque request value according to a preset logic; and (4) the torque function safety processing module calculates an effective torque value to the motor. Compared with the prior art, firstly, each functional module can calculate a respective torque request value according to an input signal; then the coupling processing module carries out processing according to corresponding logic and outputs a total nominal torque request value; and then the function safety processing module carries out processing based on the mechanical characteristics and the adjustment and calibration requirements of the item to which the function safety processing module belongs, and outputs a final torque value.

The invention relates to the field of connectors, and discloses a passenger car electronic power steering connector which comprises a plug end assembly and a socket end assembly, the plug end assembly comprises a connecting plug end and a first wire harness, the socket end assembly comprises a connecting socket end and a second wire harness, the connecting plug end is provided with a waterproof fixing assembly, and the connecting socket end is provided with a second fixing assembly. The connecting socket end is provided with an auxiliary fixing assembly, the waterproof fixing assembly comprises an expansion waterproof part and an air compression clamping part which are arranged on a shell of the connecting plug end, the air compression clamping part comprises a first movable groove formed in the shell of the connecting plug end, and rod grooves are symmetrically formed in the top end of the first movable groove; according to the invention, after the two magnetic plates are installed, under the action of attraction of the magnetic plates to the clamping blocks, the clamping blocks are adsorbed upwards and clamped into the clamping grooves, the connecting plug end and the connecting socket end are clamped and fixed, and the anti-falling performance of the equipment is improved.

A vehicle includes an electronic power steering (EPS) system configured to steer front wheels of the vehicle in response to a steering command. A trajectory control module is configured to generate the steering command. The trajectory control module includes a perception module configured to identify a target path for the vehicle and a planning module configured to determine a blend path for the vehicle to the target path. A control module includes a feedforward module configured to generate a feedforward steering command, a model predictive control module configured to generate a feedback steering command in response to the feedforward steering command and model predictive control, and a summer configured to generate the steering command in response to a sum of the feedforward steering command and the feedback steering command.

This invention relates to the field of automotive steering control technology, specifically a method for controlling a steering system in various advanced driver assistance scenarios. Compared with existing technologies, this invention meets the usage scenarios of assisted automatic parking, driver-in-the-loop, driver-hands-free, and emergency avoidance; it receives the target rack position requested by the vehicle's host computer, and the electronic power steering system calculates the required motor torque through its internal controller to achieve lateral control response; the safety function of limiting the maximum rack speed of the steering system can meet the functional safety target of preventing oversteering from being violated; when the driver assistance function is in operation, it can simultaneously meet the requirements of angle following, smooth switching, and comfortable hand feel control in human-machine co-driving scenarios.

The application discloses a 48V EMB system with double-redundancy control and anti-reverse connection protection and relates to the field of vehicle braking, which alleviates the problems that the MCU cannot be reset, the motor brake is locked and the circuit is easily burnt when the battery is reversely connected in the existing 48V EMB system under abnormal conditions. The 48V EMB system comprises an MCU module, a motor pre-driving chip, an SBC module and a battery anti-reverse connection module; the SBC module is used for reset redundancy of the MCU module and motor pre-driving chip enable redundancy; the battery anti-reverse connection module is used for detecting a power supply connection, and when the power supply is forwardly connected, the power supply is controlled to form a loop, and otherwise the power supply loop is turned off. The application is suitable for a 48V mild hybrid drive-by-wire electronic mechanical brake caliper actuator, a 48V vehicle-mounted DC / DC converter power supply input module, a 48V electronic power steering controller power supply end and a 48V battery pack high-voltage power distribution box (PDU) / safety box power supply inlet.

Preventing steering wheel oscillation during vehicle shutdown is provided. An electronic power steering system is disclosed and includes: a steering wheel configured to steer a host vehicle; a steering column connected to the steering wheel; a rack; an electronic column lock configured to lock the steering column to the rack; and a control module configured to determine, during a stop event of the host vehicle, whether the electronic column lock is activated and has locked the steering column to the rack, and in response to determining that the steering column is locked to the rack, inhibit movement of the steering wheel to prevent movement of the steering wheel.

An electronic power steering apparatus, according to one embodiment of the present invention, comprises: an output shaft rotated by means of a reduction gear connected to a driving motor; a ball screw having an upper end coupled to a lower end of the output shaft, and having outer circumferential screw grooves formed on an outer circumferential surface thereof to rotate in conjunction with the output shaft; a ball nut having gear teeth formed on an outer circumferential surface thereof and inner circumferential screw grooves corresponding to the outer circumferential screw grooves formed on an inner circumferential surface thereof, the ball nut being coupled to the ball screw via a ball and sliding in an axial direction; and a sector shaft, coupled to the gear teeth of the ball nut, for operating a pitman arm while rotating during the axial sliding of the ball nut.

The application provides a vehicle control method and device, electronic equipment and vehicle. The method comprises the following steps: deploying a front-view integrated machine in the vehicle to identify the road edge and / or oncoming vehicle; deploying a millimeter wave radar in the vehicle to obtain a first lateral distance and a first estimated collision time between the vehicle and the road edge, and / or a second lateral distance and a second estimated collision time between the vehicle and the oncoming vehicle; obtaining a vehicle risk assessment level according to the first lateral distance and the first estimated collision time, and / or the second lateral distance and the second estimated collision time; obtaining an operation state of an emergency lane keeping system in the vehicle according to the risk assessment level; if the operation state is an active state, sending a warning prompt according to the risk assessment level, or controlling the vehicle to move in a direction opposite to the lateral direction of the road edge and / or the oncoming vehicle through an electronic power steering system. The application reduces the cost and improves the deployability by deploying a light-weight device.

The invention discloses an electronic power-assisted steering connector compatible with a power signal and a high-frequency transmission signal, and relates to the technical field of electronic equipment.The electronic power-assisted steering connector comprises a female seat and an electronic control unit, each fixing plate is provided with an anti-disengagement quick-release mechanism, each anti-disengagement quick-release mechanism comprises a connector insertion rod, and the connector insertion rods are fixedly connected to the interiors of the fixing plates; the female seat is movably arranged in the electronic control unit, the output end of the signal seat is fixedly connected with a plurality of joint wires, and the joint wires are electrically connected with the input end of the electronic control unit. According to the electronic power-assisted steering connector compatible with the power signal and the high-frequency transmission signal, the power signal connector and the high-frequency transmission signal connector are prevented from falling off after being fixed, the use stability of equipment is guaranteed, mounting and dismounting are convenient, a large amount of time is saved, the working intensity is reduced, and the working efficiency is improved. And a screwdriver does not need to be matched for auxiliary dismounting operation, so that the working efficiency is improved.

This invention provides a method, system, medium, and device for vehicle tire blowout stability control, belonging to the field of vehicle active safety technology. The method acquires tire pressure monitoring signals from all four tires; determines whether a tire has blown out and the corresponding tire position based on the tire pressure monitoring signals; the electronic power steering control system switches to a heavier feel mode; the electronically controlled suspension system raises the suspension height and increases damping; the drive control system limits torque output; the vehicle motion domain control system recognizes driving intentions and performs corresponding braking and / or drive control to reduce instability until the electronic power steering control system detects a yaw control threshold, at which point the vehicle dynamic control system's correction function intervenes. This method offers advantages such as faster response and higher stability, and can be used in conventional non-distributed drive electric vehicles, reducing the risk of driver error and achieving smooth short-distance driving and safe parking.

An electronic power steering system is disclosed and comprises: a steering wheel configured to steer a host vehicle; a steering column connected to the steering wheel; a rack and pinion; an electronic column lock configured to lock the steering column to the rack and pinion; and a control module configured to determine, during a power-off event of the host vehicle, whether the electronic column lock is active and has locked the steering column to the rack and pinion, and, in response to determining that the steering column is locked to the rack and pinion, dampens movements of the steering wheel to prevent movement of the steering wheel.

A number of illustrative variations may include a method for use in a vehicle having an electronic steering system, a position control module, an electronic steering system rack force observer, and a rack force observer vehicle diagnostic, wherein the method includes the steps of providing a vehicle that may include an electronic steering system, a position control module, an electronic steering system rack force observer, and a rack force observer vehicle diagnostic; measuring the steering angle and steering velocity of the vehicle; communicating a steering angle of the vehicle to the position control module and the electronic steering system rack force observer; communicating a steering velocity of the vehicle to the electronic steering system rack force observer; communicating electronic steering system motor commands to the electronic steering system rack force observer; and estimating rack force data and communicating the rack force data to the rack force observer vehicle diagnostic; and determining a compensated target steering angle.

The invention relates to a breakable support (100) for a lead-acid battery comprising a liquid electrolyte, characterized in that the breakable support (100) comprises a drainage tray adapted to collect the liquid electrolyte draining from said battery, said breakable support (100) comprising an electronic support adapted to hold a fuse box and an electronic power steering control device, said drainage tray (1) and said electronic support (2) being connected by a break zone (3) adapted to break during a frontal impact. Furthermore, the invention relates to a motor vehicle comprising said breakable support (100) and a method for mounting said breakable support (100). Figure 1

The utility model relates to the technical field of automobile steering system assembly, in particular to an assembly tray for a parallel shaft type electronic power steering machine, which comprises a chassis, a positioning component, a V-shaped support component, a slide rail, a remodeling block, a movable jack block, a reference jack block, a remodeling limit block and a remodeling positioning pin. The top of the chassis is provided with a positioning assembly, two sliding rails and a reference jack block, each sliding rail is provided with a slidable remodeling block, the V-shaped supporting assembly is vertically fixed to the top of the remodeling block, one end of the remodeling limiting block is connected with the reference jack block through a remodeling positioning pin, and the other end of the remodeling limiting block is connected with the reference jack block through a remodeling positioning pin. And the other end of the remodeling limiting block is fixed with a groove at the bottom of the movable jack block. Compared with the prior art, through the connecting structure of the reference jack block, the remodeling limiting block, the movable jack block, the remodeling block and the V-shaped supporting assembly, the stability and the accuracy in the assembling process are guaranteed. The device has the advantages of being simple in structure, stable, reliable, and convenient to remodel and maintain.

The present invention relates to the field of motor control technology, and more specifically, to a method for implementing motor control in the event of a phase failure. Compared to the prior art, the present invention designs a method for implementing motor control in the event of a phase failure. The method determines whether a phase failure exists based on the demand current and feedback current. If a phase failure occurs, the method calculates motor control information such as the feedback current, reference voltage, and three-phase duty cycle. This method achieves phase failure control without modifying the motor and controller structures, thereby improving the safety of electronic power steering systems and ensuring that the system can provide power assistance in the event of a phase failure, thereby avoiding danger.

The utility model relates to the technical field of automobile steering system assembly, in particular to a sensor assembly auxiliary mechanism of a parallel shaft type electronic power steering machine, which comprises an upper fixing plate, a connecting support, a lower fixing plate, a guide sleeve support, a guide pin, a spring, a boss and a guide block. Through holes are formed in the center of the upper fixing plate and the center of the lower fixing plate respectively, the upper ends of the guide blocks penetrate through the lower fixing plate and then are inserted into the bottoms of inner holes of the corresponding guide sleeve supports, the guide pins are embedded into the upper portions of the guide blocks, the heads of the guide pins are located in kidney-shaped holes in the surfaces of the guide sleeve supports, and springs are installed between the tops of the guide blocks and the inner surfaces of the guide sleeve supports. The boss is fixed to the bottom of the lower fixing plate and located between the two guide blocks. Compared with the prior art, the installation stability and accuracy of the sensor are ensured. The device has the advantages of being simple in structure, reliable in function and convenient to maintain and replace.

The invention relates to the technical field of road rollers, in particular to a pneumatic tire roller and an electronic power-assisted steering system thereof, comprising an electronic steering wheel, a controller and a servo motor; the electronic steering wheel is used for being operated by a driver, converting the operation of the driver into an operation signal representing the operation content of the operation, and then transmitting the operation signal to the controller; an output shaft of the servo motor is connected with an input shaft of the steering gear through a spline; the controller is used for receiving the transmitted operation signal in real time, converting the operation signal into a servo signal which is used for controlling the servo motor to correspondingly rotate so as to drive the steering gear to adjust the road roller to realize corresponding steering, and then sending the servo signal to the servo motor; and the servo motor is used for acting according to the servo signal after receiving the servo signal so as to control the steering gear to adjust the steering of the pneumatic tire roller. According to the invention, the use of a traditional mechanical steering wheel and steering gear structure is avoided, so that obvious noise is avoided in the operation process, and the occupied space is saved to a certain extent.

The present application relates to the field of electronic power steering control, and particularly relates to an electronic power steering control method and device, electronic equipment and storage medium. The present application obtains steering request and driving data in the process of vehicle driving; the steering request carries target steering information; a control current prediction model is used to predict the control current of the assist motor based on the target steering information and the driving data, and the target control current of the assist motor is obtained; the control current prediction model is obtained by training a plane neural network based on historical target steering information, historical driving data and corresponding historical control current; and the steering wheel is controlled based on the target control current of the assist motor. In this way, the non-linear steering of the electric power steering device in the full speed range can be effectively assisted, the safety and stability of the vehicle during operation are ensured, and the traffic accidents are reduced and the steering conditions are improved.

The utility model relates to the technical field of automobile steering system assembly, in particular to a belt mounting mechanism for a parallel shaft type electronic power steering machine, which comprises a support mechanism, a sleeve guide mechanism, a belt fixing fork, a guide pin and a spring. A spring and a belt fixing fork are installed in the sleeve guide mechanism, a guide pin is arranged on the side face of a horizontal table of the belt fixing fork, the end of the guide pin is inserted into a guide groove in the surface of the sleeve guide mechanism, and a fork-shaped structure is arranged at the bottom of the horizontal table of the belt fixing fork and exposed out of the bottom of the sleeve guide mechanism. One end of the belt is arranged outside the fork-shaped structure in a sleeving mode, and the bottom edge of the sleeve guide mechanism abuts against the belt. Compared with the prior art, through cooperation of the spring, the belt fixing fork, the guide pin and the sleeve guide mechanism, stability and accuracy of belt installation are guaranteed. The device has the advantages of being simple in structure, reliable in function and convenient to maintain and replace.

Methods, apparatus, systems and articles of manufacture are disclosed to improve electronic power assisted steering in a vehicle. An example apparatus includes memory and a processor to execute instructions to determine a steering column torque associated with a steering column of an electronic power assisted steering (EPAS) system in a vehicle, determine a steering column torque derivative based on a derivative of the steering column torque, determine a compliance compensation torque based on the steering column torque and the steering column torque derivative, and adjust a steering response of the steering column based on the compliance compensation torque.

The present disclosure relates to a steering control method and device, electronic equipment, storage medium and vehicle, and relates to the field of vehicles. The present disclosure first acquires actual steering angle information of the steering wheel in the case of determining that the electronic power steering system fails, and determines the current differential torque according to the current torque of two driving motors. Then, the steering takeover state of the vehicle is determined according to the differential torque and the actual steering angle information. Finally, in the case of the steering takeover state being the driver takeover vehicle steering state, the driving motor is controlled to steer the vehicle in response to the driving operation of the driver. According to the current differential torque and the actual steering angle information, the steering takeover state of the vehicle is accurately determined in the case of the electronic power steering system failure, the automatic driving mode and the manual driving mode are switched in time, the safety of the vehicle is improved, and the experience of the user is improved.

A control method for an electric power steering system, comprising: when a vehicle ignition signal is abnormal, acquiring a steering wheel torque signal and a vehicle speed signal (S1); when the vehicle speed signal is abnormal and the change rate of the steering wheel torque signal is greater than a preset threshold, on the basis of a first preset vehicle speed, controlling the electric power steering system to provide steering assistance (S2); and when the vehicle speed signal is abnormal and the change rate of the steering wheel torque signal is less than or equal to the preset threshold, controlling the electric power steering system to stop providing the steering assistance (S3). Further disclosed are an electric power steering system using the control method, and a vehicle. According to the control method for the electric power steering system, when a vehicle ignition signal is abnormal, on the basis of a steering wheel torque signal and a vehicle speed signal, the electric power steering system is controlled to perform steering assistance on a vehicle, thereby avoiding potential safety hazards caused by a steering assistance anomaly, and improving the safety of the vehicle.

The invention relates to the technical field of vehicle engineering, in particular to a vehicle steering control system and method based on track and differential combination. Comprising a vehicle control unit VCU, a front axle driving motor assembly, a middle axle driving motor assembly, a rear axle driving motor assembly, an engine assembly ECU, a generator assembly GCU, an electronic hydraulic power-assisted brake module EHB, a plurality of electronic power-assisted steering assemblies EPS, a power battery BMS, a front axle transmission, a middle axle transmission, a rear axle transmission and a vehicle speed sensor. The vehicle control unit VCU is in communication connection with a front axle driving motor assembly, a middle axle driving motor assembly, a rear axle driving motor assembly, an engine assembly ECU, a generator assembly GCU, an electronic hydraulic power-assisted brake module EHB and a power battery BMS through a CAN bus. In this way, the technical problems that in the prior art, an all-terrain vehicle cannot have excellent stability and comfort during high-speed steering and cannot have sufficient steering capacity and compact steering radius during low-speed steering at the same time in the aspect of steering performance are solved.

The application discloses a parallel axis type electronic power steering system steering jam detection and early warning method, which comprises the following steps: after a vehicle is started, a steering system controller performs power-on self-checking; an initial value of a power-assisted motor rotor position is acquired; when the vehicle meets preset activation conditions, a jam detection function is activated; according to the size and positive and negative of a steering wheel hand torque, a corresponding type of motor torque waveform mode is output; according to the steering wheel hand torque, a basic power-assisted curve is obtained by table lookup, and a basic power-assisted torque is obtained, and the output target motor torque is superimposed to serve as a final requested torque of the power-assisted motor. The application does not need to install additional sensors, acquires necessary input signals by receiving electronic power steering system and vehicle CAN communication nodes, actively detects the steering jam function, and saves cost.

A vehicle includes an electronic power steering (EPS) system configured to steer the vehicle's front wheels in response to a steering command. A trajectory control module is configured to generate the steering command. The trajectory control module includes a perception module configured to identify a target path for the vehicle and a planning module configured to determine a merging path for the vehicle to the target path. A control module includes a feedforward module configured to generate a feedforward steering command, a model predictive control module configured to generate a feedback steering command in response to the feedforward steering command and the model predictive control, and a summing device configured to generate the steering command as a result of the sum of the feedforward steering command and the feedback steering command.

A seal integrity verification system and an electronic power steering system are disclosed. The seal integrity verification system includes a pressure source, a valve, a pressure sensor, a power assist mechanism, and a control unit. The control unit is programmed to, in response to a request to verify the integrity of at least one sealing member, command the valve to move toward a first open position, command the pressure source to operate, and the pressure sensor is arranged to provide a second signal indicating pressure decay within the housing assembly. The pressure source is arranged to supply positive pressure fluid to the housing assembly. The control unit is also programmed to, in response to the second signal indicating that the pressure decay is greater than a threshold, output a warning; command the compressor to operate to supply fluid to the housing assembly; and, in response to a first signal and at least one command for a predetermined time period to stop the compressor, command the valve to move toward a closed position; command the valve to move toward the first open position to discharge fluid; and command the valve to move toward a second open position.

The utility model relates to the technical field of steering systems, in particular to an assembly disassembling table for a double-gear electronic power steering machine. An assembly disassembling table for a double-gear electronic power steering machine is characterized in that a movable disassembling module is arranged on one side above a product positioning module, the left side and the right side of a positioning bottom plate are connected with rack U-shaped fixing blocks respectively, and the tops of the rack U-shaped fixing blocks are connected with rack check blocks; the right front side of the positioning bottom plate is connected with a shell auxiliary supporting plate; the movable bottom plate is connected with a sliding rail through a sliding rail base, the sliding rail is slidably connected with one end of an L-shaped fixing plate, the other end of the L-shaped fixing plate is connected with a lead screw, the top of the lead screw is connected with a handle, and the bottom of the lead screw is connected with a clamping jaw. And a remodeling limiting block is arranged on the movable bottom plate on one side of the sliding rail base. Compared with the prior art, the disassembly requirements of a motor assembly and a shell in a current double-gear electronic power-assisted steering machine gluing product assembly can be met.