27 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.

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.

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.

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 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 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.

A method for performing diagnostics on a steering system of a vehicle includes controlling an electronic power steering (EPS) gear of the steering system to apply force to the steering system in accordance with a predetermined torque profile, receiving signals corresponding to a measured response of the steering system caused by the predetermined torque profile, comparing the received signals to an expected response of the steering system, and generating an output that includes a diagnosis of the steering system based on the comparison between the received signals and the expected response of the steering system.

Method (300) for providing a driver assistance system, wherein the method (300) comprises: in response to an ignition turn-on signal (302): Determine (304), using at least one first value associated with one or more sensors (106), whether a host vehicle (10) is moving from a first lane (202) to a second lane (204); in response to the detection (304) that the host vehicle (10) is moving from the first lane (202) to the second lane (204), detection (306), using at least one second value assigned to the one or more sensors (106), whether an object is in a blind spot of the host vehicle (10) and / or on the second lane (204) within a threshold distance of the host vehicle (10); in response to the detection (306) that an object is in the blind spot of the host vehicle (10) and / or in the second lane (204) within the threshold distance to the host vehicle (10), perform (308) at least one driver assistance maneuver; and in response to the finding (306) that an object is neither in the blind spot of the host vehicle (10) nor on the second lane (204) within the threshold distance to the host vehicle, not to perform at least one driver assistance maneuver, wherein the host vehicle (10) has electronic power steering, characterized by the fact that that includes at least one driver assistance maneuver providing a torque superposition to at least one component of the electronic power steering to steer the host vehicle (10) away from the object.

A method for obtaining diagnostic data for an electronic power steering system (EPS system) of a vehicle, which, using one or more processors associated with the EPS system, includes receiving one or more inputs indicating respective operating characteristics associated with the EPS system, determining, from a first plurality of measurement ranges, a first measurement range of a first operating characteristic corresponding to the one or more inputs, wherein the one or more inputs indicate that the first operating characteristic lies within the first measurement range, and incrementing a first counter corresponding to the first measurement range. The first counter stores a first value indicating the number of occurrences of the first operating characteristic within the first measurement range, and the diagnostic data includes the first value stored by the first counter.

The utility model relates to the technical field of steering system testing, in particular to an electronic power steering machine ball screw transmission efficiency test bench which comprises a bottom plate, a ball screw support, a cover plate, a tensioning sleeve, a sensor support, a torque sensor, a large belt wheel, a double-linear-bearing mechanism, a moving mechanism, a driving motor, a small belt wheel and a synchronous belt. A first bearing of the ball screw is installed in an installation hole of a ball screw support, a sensor support is provided with a torque sensor and a large belt wheel, a transmission belt wheel of the ball screw and the torque sensor are connected through a tensioning sleeve, the end of a screw body of the ball screw is connected with a double-linear-bearing mechanism, and a shaft of a driving motor is connected with a mandrel of a small belt wheel. And the synchronous belt is sleeved outside the large belt wheel and the small belt wheel. Compared with the prior art, the transmission efficiency of the ball screw is directly evaluated, the steering engine assembly rack resource is saved, the test response speed is improved, and a foundation is laid for improving the efficiency of subsequent ball screw problem analysis.

A method for obtaining diagnostic data for an electronic power steering (EPS) system of a vehicle including, using one or more processors associated with the EPS system, receiving one or more inputs indicating respective operating characteristics associated with the EPS system, determining, from among a first plurality of measurement ranges, a first measurement range of a first operating characteristic corresponding to the one or more inputs, the one or more inputs indicating that the first operating characteristic is within the first measurement range, and incrementing a first counter corresponding to the first measurement range. The first counter stores a first value indicating a number of occurrences of the first operating characteristic within the first measurement range and the diagnostic data includes the first value stored by the first counter.

The application provides a driving system and control method of a mower and a mower. The whole machine adopts a new type of hybrid power technology of diesel and electricity, realizes reasonable distribution of diesel and electricity hybrid power energy, and reduces exhaust emission in the working process. The whole machine adopts a distributed hybrid power driving system. The power distribution system adopts a double power flow power distribution mode (pure electric driving control is adopted for the running of the whole machine, and an electro-hydraulic driving mode is adopted for the mower and flattening assembly, so that the running system and the mower and flattening assembly can be synchronously operated without driving the engine), the driving running system can work in a pure electric driving mode and a hybrid driving double mode. Meanwhile, the whole machine adopts an electronic power steering system, which can realize various steering modes according to the operation intention of the driver, even zero steering radius, and the steering is flexible and convenient. The double mode of "hydraulic brake + electronic brake" makes the vehicle running and working safer.

A pedal simulator may include: a housing portion; a piston portion inserted into the housing portion and movable in connection with a pedal lever portion; a mounting reaction portion mounted on the piston portion; a supporting reaction portion inserted into the housing portion, disposed in the movement path of the mounting reaction portion, and configured to support the mounting reaction portion; and a moving reaction portion disposed between the piston portion and the supporting reaction portion, configured to resiliently support the piston portion and be supported by the supporting reaction portion when moved by the piston portion. Therefore, even with an electronic power steering system, the pedal simulator can provide the driver with a braking feel similar to that produced by a conventional hydraulic power steering system.

The utility model discloses an electronic power-assisted steering controller and an electronic power-assisted steering system, the electronic power-assisted steering controller comprises a motor and an electronic driving unit, the electronic driving unit comprises a control PCB (printed circuit board), a driving PCB and a fixing assembly, the control PCB is connected with the driving PCB through the fixing assembly, and the driving PCB is connected with the motor through the fixing assembly. The driving PCB is connected with the motor and drives the motor to operate; the fixing assembly comprises a fixing support, a power source pin header and a signal pin header, the fixing support is arranged between the control PCB and the driving PCB, the power source pin header and the signal pin header are arranged on the fixing support, and the power source pin header and the signal pin header penetrate through the two ends of the fixing support and are connected to the control PCB and the driving PCB respectively. According to the utility model, the double PCBs are connected through the pin header, so that the steering controller is simpler and more compact in structure and convenient to assemble, automatic assembly is realized, and the manufacturing cost is reduced.

The embodiment of the invention relates to the technical field of vehicle steering systems, and discloses a current control method and device of an electronic power-assisted steering system and a vehicle. The method comprises the steps that the required current of a power-assisted motor is determined according to vehicle state parameters; determining temperature rise trend values of all sub-components in a first temperature control branch and a second temperature control branch of the electronic power-assisted steering system, and judging whether the maximum value of the temperature rise trend values of all the sub-components in a certain temperature control branch exceeds a preset threshold value corresponding to the sub-component or not; the first temperature control branch comprises a first controller and a first winding, and the second temperature control branch comprises a second controller and a second winding; if yes, the output demand current is reduced according to a preset current limiting proportion, and a target current limiting signal is generated; and if not, generating a target current reference signal according to the required current. By means of the technical scheme, premature over-temperature failure caused by load concentration of a single path can be avoided, and then the risk of system degradation caused by over-temperature of the single path is reduced.