633 results about "Power steering" patented technology

A method for handwheel actuator bind and / or steering column detection includes receiving, in response to a signal indicating a change in position of power steering column, a handwheel torque signal from a sensor associated with a handwheel of a vehicle. The method also includes determining whether a torque value associated with the handwheel torque signal is greater than a threshold. The method also includes, in response to a determination that the torque value associated with the handwheel torque signal is greater than the threshold, initiating at least one countermeasure.

An electromechanical power steering system for a vehicle may include a worm that can be driven rotationally about a drive axis by an electric motor, that interacts with a worm gear that is coupled to a steering shaft, and that is mounted such that it can be rotated about the drive axis in a bearing that is held in a holder. The holder may be movable relative to the worm gear. To make a decreased development of noise possible, the holder has a core element that is made from a core material and is connected to at least one contact element. The contact element may be made from a soft material that can be deformed elastically more easily and is softer relative to the core material.

A method for steering wheel actuator jamming and / or steering column detection includes receiving a steering wheel torque signal from a sensor associated with a steering wheel of a vehicle in response to a signal indicative of a change in position of a power steering column. The method also includes determining whether a torque value associated with the steering wheel torque signal is greater than a threshold. The method also includes initiating at least one countermeasure in response to determining that the torque value associated with the steering wheel torque signal is greater than the threshold.

The invention belongs to the technical field of automobile steering control, and particularly relates to an EPS power-assisted mode and return mode switching process control method which is composed of a steering mode switching judgment module, a switching time determination module, a torque curve processing module and a switching compensation torque determination module. By designing the switching time length determination module, the return time is determined according to the steering angle of the steering wheel and the vehicle speed at the current moment, the expectation of a driver is better met, the expected value of the switching compensation torque is obtained through torque processing of the Bizier curve according to calculation of different switching conditions, and therefore the accuracy of the switching compensation torque is improved. The switching compensation torque at any switching moment is obtained by tracking the switching torque curve graph, so that the steering mode switching process of the vehicle under different working conditions is smoother, and the steering comfort of a driver is greatly improved; the problem of pause caused by sudden change of hand torque felt by a driver when the power-assisted mode and the aligning mode of the current electric power-assisted steering automobile are switched is solved, and the driving experience is improved.

Several variations are disclosed, comprising a system and a method for modifying, in real time, at least one brake actuation or one drive actuation with respect to individual road wheels (742, 802) of a vehicle (750, 801) to enhance lateral stability in a vehicle (750, 801) having a functioning, partially functioning, failing, or malfunctioning electric power steering system (716). The system and the method comprise modifying at least one brake or drive instruction (102) with respect to individual road wheels (742, 802) while detecting vehicle instability.

Disclosed are an apparatus and method for detecting abnormal wheel alignment. The apparatus for detecting abnormal wheel alignment includes a sensor module and a processor operatively connected to the sensor module. The processor may calculate a steering angle error indicative of a difference between a target steering angle of a vehicle and a steering angle of the vehicle that has been detected based on lane information obtained by the sensor module, may calculate a rack force error indicative of a difference between a first rack force estimated based on information that has been fed back by a motor driven power steering system (MDPS) module of the vehicle and a second rack force estimated based on information including a yaw rate and lateral acceleration obtained by the sensor module, and may determine whether wheel alignment is abnormal based on at least one of the steering angle error and the rack force error.

The invention relates to the technical field of automobile steering devices, and particularly discloses a pavement force feedback suppression method for a power-assisted steering system, which comprises the following steps: acquiring a torque signal of the power-assisted steering system and a rotating speed signal of a steering motor; judging whether the change directions of the torque signal and the rotating speed signal are consistent; in response to inconsistent change directions of the torque signal and the rotating speed signal, converting the torque signal and the rotating speed signal to a frequency domain through Fourier transform; comparing the converted frequency domain signal with a frequency threshold value, and dividing the frequency domain signal into a high-frequency part and a low-frequency part; respectively determining a high-frequency weight and a low-frequency weight for the high-frequency part and the low-frequency part; comprehensively determining a frequency weight according to the high-frequency weight and the low-frequency weight; according to the rotating speed and the frequency weight of the steering motor, determining a suppression coefficient for the output current of the steering motor to perform feedback suppression of the pavement force; the suppression coefficient can be adjusted according to the complexity of the current road condition, the influence of road impact on the steering wheel is reduced, and the control stability is improved.

The utility model relates to the technical field of automobile steering, and discloses a multi-stage gear type all-electric power steering device which comprises a control module and a power steering module. The control module comprises at least two steering control units which are connected with each other through SPI (Serial Peripheral Interface) signals; the power-assisted steering module comprises a power-assisted motor, a gear transmission mechanism, a planetary gear mechanism, a worm and gear mechanism, a shell, an input shaft and an output shaft, the power-assisted motor is arranged on the shell, the gear transmission mechanism, the planetary gear mechanism and the worm and gear mechanism are arranged in the shell, and the power-assisted motor is in transmission connection with the gear transmission mechanism; the planetary gear mechanism is connected with the gear transmission mechanism, and the worm and gear mechanism is connected with the planetary gear mechanism. The multi-stage gear type all-electric power steering device solves the limitation of an existing electric power steering device in the application field of commercial vehicles, and the pure electric steering device which is efficient, energy-saving, light and convenient in steering and good in controllability can be provided for passenger and goods commercial vehicles.

A non-powered bogie and a railway vehicle, the non-powered bogie comprising a frame, a wheel set (2), a primary suspension device (3), a secondary suspension device (4) and a traction device (5), wherein the frame comprises a cross beam (12), side beams (11) and a primary mounting seat (13); the two side beams (11) are arranged in parallel to each other, and the cross beam (12) is connected between middle portions of the two side beams (11); the primary mounting seat (13) is disposed at end portions of the side beams (11); each side beam (11) comprises a side beam body (11a) and an air spring mounting portion (11b), with the air spring mounting portion (11b) being disposed on an outer side of a middle portion of the side beam body (11a); the cross beam (12) is provided with a central pin hole (1241); the wheel set (2) comprises an axle (21), wheels (22) and an axle box (23), with the axle box (23) being located on inner sides of the wheels (22); the primary suspension device (3) is arranged between the axle box (23) and the primary mounting seat (13); the secondary suspension device (4) is disposed on the air spring mounting portion (11b); and the bottom end of the traction device (5) is inserted into the central pin hole (1241) of the cross beam (12). In the non-powered bogie and the railway vehicle, the stability of supporting and buffering a vehicle body can be improved, and the primary mounting seat (13) as an independent component is assembled with the side beams (11) and can be suitable for bogies with various wheelbases, thereby reducing the production cost.

The utility model relates to the field of power steering pumps, and discloses a steering pump core which comprises a pump body shell, an oil inlet pipe is fixedly installed on the outer surface of the pump body shell, an oil inlet end is fixedly installed at the front end of the oil inlet pipe, and an oil discharge pipe is fixedly installed on the side, close to the oil inlet pipe, of the outer surface of the pump body shell. The engine drives the belt pulley, the rotating shaft and the rotor to move, so that hydraulic oil enters the pump body shell through the oil inlet end and the oil inlet pipe, and at the moment, the hydraulic oil in the pump body shell is pushed into the pump cavity under the action of rotation of the rotor blades to increase pressure and is discharged; at the moment, through a first filter plate and a second filter plate in the treatment mechanism, the discharged hydraulic oil can be conveniently filtered, metal particles and other pollutants generated by abrasion during rotation of a rotor, a stator and blades in the steering pump are prevented from damaging parts in a hydraulic system as much as possible, and protection on the parts of the hydraulic system is improved.

The invention belongs to the technical field of new energy automobile steering systems, and discloses a new energy automobile electric hydraulic power-assisted steering system and a control method thereof.The system integrates a double-source redundant hydraulic power unit, a hydraulic adjusting unit, a multi-dimensional working condition sensing unit and an intelligent main controller; the multi-dimensional working condition sensing unit is integrated with a road adhesion coefficient detection module and a battery remaining capacity detection module. The control method is layered look-ahead matching control and is executed by an intelligent main controller in parallel: a power-assisted decision-making layer divides a three-stage power-assisted mode according to multi-dimensional perception information, and limits a steering angular velocity when power-assisted is enhanced on a low-attached road surface; the energy optimization layer predicts and implements prospective energy storage and pump rotating speed self-adaptive adjustment based on the intention of a driver; and the fault diagnosis layer realizes rapid fault identification and redundancy switching through multi-parameter collaborative diagnosis. The contradiction of high energy consumption, response delay and weak safety guarantee of a traditional system is solved, and power-assisted steering which is safe, energy-saving, fast in response and high in adaptability is achieved.

The utility model provides a direct current motor driving force steering structure, which comprises a rotating disc, two electrode plates are symmetrically arranged at the bottom of the rotating disc, the two electrode plates are respectively connected with a positive electrode and a negative electrode of a power supply, a conducting plate is arranged below a motor plate in a contact manner, and a lead is arranged on the electrode plates. And the other end of the wire is wound out from the outer side edge of the rotating disc and extends out from the opposite side. An electrode plate and a conducting plate are arranged in a power supply circuit of the direct-current motor, when the electrode plate is in contact with the conducting plate, a circuit of the direct-current motor is conducted, a wire of the electrode plate is long, enters from the outside, is wound on the outer side edge of the rotating disc and is connected to the electrode plate, and after the electrode plate rotates to the other side, the conducting plate in contact with the electrode plate is changed; according to the method, the direction of the driving force of the direct current motor can be changed only by rotating the rotating disc, so that the method is simple, convenient and lower in cost.

The utility model provides a basic power unit for a railway vehicle and a railway vehicle marshalling, the basic power unit for the railway vehicle comprises a first vehicle and a second vehicle, and the first vehicle and the second vehicle are connected in sequence. Wherein the first vehicle is provided with a power bogie, and the second vehicle is provided with a power bogie and a non-power bogie. The railway vehicle marshalling comprises a plurality of basic power units which are arranged in sequence, and each basic power unit has the same dynamic drag ratio.

Computer-implemented-method for determining a primary set of equivalent parameter data that is associated with a primary set of equivalent parameters for indirect measurement of vibrational activity of a source component comprising a vibrational source, such as an engine, compressor, power steering apparatus or any other actively driven mechanism, wherein said source component is comprised in a mechanical subsystem, wherein the method comprises, in any suitable order, the steps of: - providing a set of vibrational measurement data that is obtained from performing vibrational measurements at a number of indicator locations on the mechanical subsystem, wherein the vibrational measurement data is indicative of measured motions of the mechanical subsystem, and / or indicative of measured strains and / or measured forces in the mechanical subsystem, at the indicator locations due to the vibrational activity of the vibrational source; - defining an initial set of equivalent parameters, wherein the primary set of equivalent parameters is a subset of the initial set of equivalent parameters; - providing a model of the mechanical subsystem, wherein said model models a relation between the initial set of equivalent parameters and the indicator locations; the computer-implemented-method further comprising, in any suitable order, the steps of: a) selecting a plurality of different subsets of equivalent parameters from the initial set of equivalent parameters; b) determining, for each subset of the selected plurality of subsets of equivalent parameters, a respective set of equivalent parameter data using a generalized inverse of the model of the mechanical subsystem and at least a part of the set of vibrational measurement data; c) determining, for each subset of the selected plurality of subsets of equivalent parameters, a qualitative parameter that is indicative for a quality of the respective set of equivalent parameter data; d) determining a score for each subset of the selected plurality of subsets of equivalent parameters on the basis of the qualitative parameter; e) selecting, on the basis of the score of each subset of the plurality of subsets of equivalent parameters, one of the subsets of the plurality of subsets of equivalent parameters as the primary set of equivalent parameters and selecting the thereto associated set of equivalent parameter data as the primary set of equivalent parameter data.

According to the dissimilar redundancy electrically-driven hydraulic energy device and the control method, two kinds of servo motor pumps are adopted, and high-power steering and low-power mute working condition steering are met respectively. A plurality of hydraulic pulsation silencers are connected in series in a main oil way to weaken vibration noise in the flowing process of high-pressure oil, a hydraulic hose is adopted for connection in the main oil way, vibration energy of output hydraulic oil is further attenuated, and meanwhile a double-layer vibration isolator is arranged to further reduce the magnitude of the vibration noise transmitted to a ship body.

The invention relates to the technical field of intelligent equipment manufacturing, and particularly discloses an automobile power steering gear valve sleeve cutting machining device which comprises a machine body, and a machine case, a controller, a guide rail and a sliding table are arranged on the machine body; the clamping assembly comprises a clamping piece and a position adjusting piece, and the clamping assembly is used for fixing and adjusting the position of the valve sleeve; the cutting assembly comprises a power tool rest which is rotationally arranged on the outer side of the machine box, and a first machining tool and a second machining tool are arranged on the power tool rest. The calibration assembly comprises a mounting seat, a calibration piece and a calibration target, the mounting seat is arranged on the power tool rest, an insertion rod is fixedly arranged on the mounting seat, a calibration plate and a laser transmitter are arranged at the tail end of the insertion rod, the calibration target is located at the other end of the machine body, and when the inner hole and the valve sleeve are not coaxial, the position of a laser beam on the calibration target deviates; and the controller adjusts the position of the valve sleeve through the position adjusting piece. The device has the effects of improving the overall quality of a product and remarkably reducing the equipment manufacturing and maintenance cost at the same time.

A power steering controller including: a first override determination part that determines whether automatic steering of a vehicle is possible on the basis of a state of the vehicle; a second override determination part that determines whether manual steering of the vehicle is possible on the basis of a state of a driver of the vehicle; and a driving mode switching part that switches between an automatic steering mode for automatically steering the vehicle, a manual steering mode for manually steering the vehicle, and a semi-automatic steering mode for automatically steering and manually steering the vehicle, on the basis of a determination result of the first override determination part and a determination result of the second override determination part.

A method for identifying a hands-on / hands-off state. The method comprises: performing low-pass filtering on a torsion bar torque signal of an electric hydraulic power steering system of a vehicle to obtain a filtered torsion bar torque signal (S101); on the basis of the filtered torsion bar torque signal and the steering wheel angular velocity of the vehicle, determining a low-frequency factor (S102); on the basis of the filtered torsion bar torque signal and the steering wheel angular velocity of the vehicle, determining a high-frequency factor (S103); on the basis of the high-frequency factor and the low-frequency factor, determining a feature factor (S104); and, on the basis of the feature factor, identifying a hands-on / hands-off state (S105). A system for identifying a hands-on / hands-off state is also disclosed.

A method for controlling a power steering system of a motor vehicle, the method including steps of: detecting an operating state of a steering actuator coupled to a rack; when the steering actuator is operational, providing a torque setpoint to a main motor of the steering actuator, by a first control unit of the steering actuator; when the steering actuator is faulty, but provides an angular position measurement of the main motor, controlling, by a second control unit, a brushless auxiliary motor, coupled to the rack, based on measuring the angular position of the main motor and an angular position of a steering wheel; and when the steering actuator has completely failed, controlling the auxiliary motor according to the angular position of the steering wheel.

The invention provides a vehicle turning control method and device, a controller, a vehicle and a storage medium. Relates to the technical field of vehicle control. The method comprises the steps that a torque vector control system can generate a torque control instruction according to the turning radius of the vehicle when a steer-by-wire system of the vehicle fails, and the torque control instruction is sent to a motor controller of wheels so as to control turning of the vehicle. According to the method, when the steer-by-wire system fails, the torque control instruction can be generated to control the output torque of the motor controller, vehicle turning is achieved, the response time needed by original hydraulic power steering control is shortened, and the vehicle turning safety is improved.

The utility model provides a steering system based on a yoke steering wheel and electronic steering gear box connecting structure, which comprises a steering unit, a steering unit and a control unit, the steering unit comprises a yoke steering wheel, an electronic steering gear box and a limiting mechanism, the steering unit and the control unit are installed in a ship cockpit, the steering unit is installed on a stern, and the electronic steering gear box is installed on the steering unit. The steering unit and the steering unit are both in electric control and communication connection with the control unit, and the control unit receives user operation information and actual steering data and outputs corresponding adjusting instructions through a PID algorithm. The connecting structure is compact in design, an electronic feedback system is strictly closed, the accuracy and reliability of the steering process are guaranteed, and the control performance of the ship is improved.

The invention relates to the technical field of furniture plate carrying manipulators, in particular to a multi-degree-of-freedom manipulator for furniture assembly plate processing, which comprises a base and a power steering seat arranged on the base, and further comprises a gravity center adjusting assembly and a grabbing assembly, the grabbing assembly is arranged on the machine base and used for grabbing plates, and the gravity center adjusting assembly is arranged on the base, connected with the grabbing assembly and used for adjusting the gravity center position of the whole mechanical arm according to the grabbing angle and position of the plates. And when the lower clamping plate rotates towards the upper clamping plate, the limiting plates can be driven to move in the opposite directions, limiting work of the plates is achieved, the plates are located between the upper clamping plate and the lower clamping plate, and the stability of the plates in the clamping process is guaranteed.

A steering control device configured to control a steering system, the steering system including a turning mechanism, the turning mechanism including a motor configured to generate a motor torque, the motor torque serving as a motive power for moving a turning shaft (14) to turn a turning wheel (16) of a vehicle. The steering control device includes a control unit configured to control a target control value, the target control value serving as a target of a control value for controlling the motor torque of the motor. The control unit is configured to perform compensation on the target control value; acquire an offset value; and change the target control value such that the acquired offset value gradually decreases.

The utility model discloses a self-adaptive clearance compensation mechanism, a power-assisted steering device and a vehicle. The self-adaptive clearance compensation mechanism comprises a first transmission part, a second transmission part, a bearing, a bearing pressing block and a compensation assembly. The second transmission part is in transmission connection with the first transmission part; the bearing is fixedly connected with the first transmission part; the bearing pressing block is suitable for sleeving a bearing; the compensation assembly is suitable for abutting against the bearing pressing block so as to compensate the gap between the first transmission piece and the second transmission piece. The bearing of the first transmission part is sleeved with the bearing pressing block, the bearing pressing block bears elastic supporting of the compensation assembly, the supporting stability of the self-adaptive clearance compensation mechanism on the first transmission part is improved, the self-adaptive clearance compensation mechanism can be prevented from damaging the bearing of the first transmission part, and long-term stable and effective transmission of the transmission mechanism is guaranteed.

The driving chassis structure of the intelligent driving automobile comprises a main beam of a frame-shaped structure, wheel bodies are arranged on the front portion and the rear portion of the left side and the right side of the main beam respectively, and the wheel body on the front side is controlled by a hydraulic power steering system to adjust the orientation; lateral movement mechanisms are further arranged on the left side and the right side of the main beam, located between the front wheel body and the rear wheel body and arranged to be in an adjustable state, and then the main beam is lifted by the lateral movement mechanisms to control the main beam to move transversely. The lateral moving mechanisms are arranged on the left side and the right side of the main beam, the lateral moving mechanisms are arranged in the adjusting state, and meanwhile the lateral moving mechanisms are connected with a hydraulic system and a control system of the vehicle, so that the states of the lateral moving mechanisms can be adjusted according to needs of a driver, the rollable ends of the lateral moving mechanisms make contact with the ground, and the vehicle is lifted to be separated from the ground; and convenience is provided for lateral movement of the vehicle.

The steering control system, electric power steering device, and steering control program of the present invention can provide a good steering feel for the driver during override. The steering control system includes: a steering angle sensor that detects the steering angle of the steering wheel; a feedback control unit that has an integrator for integrating the deviation between the detected value of the detected steering angle and a preset steering angle target value, and controls a steering actuator based on the integration result of the integrator; a steering force sensor that detects the steering force applied by the driver to the steering wheel; a standard deviation calculation unit that calculates the standard deviation of the detected steering force; and an integration suppression unit that suppresses the integration of the integrator based on the calculated standard deviation.

1. The name of the design product: the radiator of power steering controller (high power integrated). 2. The use of the design product: for the power steering controller. 3. The design points of the design product: in shape. 4. The picture or photo that can best show the design points: perspective view.

The utility model discloses a three-axle bogie of a new energy rail traction locomotive, which relates to the technical field of three-axle bogies, and comprises a framework, a connecting mechanism, a sand mechanism, a buffer mechanism, a traction frame, a pull arm mechanism and a driving mechanism, the connecting mechanism is arranged at the top of the framework, the sand mechanism is arranged at the corner of the framework, and the buffer mechanism is arranged at the bottom of the framework. The multiple buffering mechanisms are installed on the two sides of the framework respectively, the traction frame is installed at the ends of the buffering mechanisms, the arm pulling mechanism is installed on the framework, and the multiple driving mechanisms are installed below the framework at equal intervals. Through the arrangement mode that the sand mechanism, the buffering mechanism, the traction frame, the pull arm mechanism and the driving mechanism are matched, the power bogie of the new energy rail traction locomotive is more compact in structure, smaller in power loss and higher in efficiency, large-torque operation can be provided for the locomotive, electric energy is saved, and cost is reduced; the use stability of the bogie is improved.

The present invention discloses a control method for a power steering and independent drive integrated wheel side electric drive device, step 1, collecting vehicle speed, accelerator pedal opening and steering wheel torque, and obtaining a target total driving torque T d And the target steering wheel steering assist torque T a ; Step 2: Calculate the target force F loaded on the rack required for rack movement a , distribute the differential power steering rack force F a1 And the dual-rotor motor power steering rack force F a2 ; Step 3, calculate the left and right wheel drive torque difference, step 4, calculate the left and right wheel drive torque; step 5, calculate the dual rotor motor outer rotor output torque T w .

The utility model discloses a circulating ball power steering gear centering valve structure which comprises a shell and a steering nut, the steering nut is located in the shell, a screw plug and a centering valve seat are installed on the bottom end side of the shell, a sliding rod capable of sliding up and down is placed in the centering valve seat, a spring is placed in the screw plug, and the sliding rod can slide up and down in the sliding rod. One end of the spring abuts against the bottom end of the inner side of the screw plug, the other end of the spring abuts against the bottom end side of the sliding rod, the side face of the bottom end of the steering nut protrudes outwards to form a flange, and the top end of the sliding rod abuts against the side face of the bottom end of the steering nut. According to the utility model, when a vehicle runs at a high speed, direction deviation caused by external disturbance of the vehicle is avoided, so that the vehicle has good operation stability performance.