5035 results about "Steering wheel" patented technology

An electric power assisted steering assembly comprises a steering mechanism which operatively connects a steering wheel to the roadwheels of a vehicle, a torque sensing means adapted to produce a first output signal indicative of the torque carried by a portion of the steering mechanism, a means for producing a second output signal indicative from a signal indicative of the angular velocity of the portion of the steering mechanism, an electric motor operatively connected to the steering mechanism, a signal processing unit adapted to receive the two output signals and to produce therefrom an overall torque demand signal representative of a torque to be applied to the steering mechanism by the motor, and a motor drive stage adapted to provide a drive current to the motor responsive to the torque demand signal. The overall torque demand signal includes a damping component that is dependent upon the second output signal. The means for producing the yaw damping component includes a filter having one pole and one zero, and in use the second signal is passed through the filter to produce the damping component, the frequency of the pole and zero being selected such that the filter provides a band between the pole and zero within which the phase of the filtered second signal and the velocity signal are further out of phase or in phase than within the band.

The invention discloses a light passenger car chassis steering stability self-adaptive control method, which comprises the following steps of: collecting multi-dimensional working condition parameters in real time, and covering 12 types of key parameters such as a steering wheel rotating angle and a wheel speed; after preprocessing and abnormity diagnosis, double models are adopted to estimate the dynamic state of the vehicle in parallel; dynamically setting a control target, and realizing personalized control in combination with driver style recognition; the control quantity is optimized through multi-mode strategy dynamic switching and steering and braking system cooperative control; and actuator dynamic compensation, scenarized self-learning and multi-stage fault handling mechanisms are introduced. According to the method, the complex working condition adaptability is improved, the response speed is controlled, the subsystem cooperation efficiency is improved, the system robustness and the long-term use performance are enhanced, and the driving safety of the light bus is effectively guaranteed.

The embodiment of the invention discloses an automobile power-assisted steering test system and method, and relates to the technical field of automobile electronics. An EPS controller in the automobile power-assisted steering test system is used for acquiring an input torque generated by a driver simulation motor through an angle torque sensor; according to the input torque and the state information of the vehicle, the power-assisted torque needing to be output by the EPS motor in the steering process is determined; the power-assisted torque is sent to an EPS motor, so that the EPS motor assists the vehicle in steering; if the input torque, the power-assisted torque and the actual resistance torque of the rocker arm end are balanced in the steering process of the vehicle, and the amplitude and the variation trend of the power-assisted torque all accord with the preset power-assisted characteristic curve, the vehicle power-assisted steering test passes. Therefore, by introducing a driver steering wheel input part and a steering resistance simulation part, the automobile power-assisted steering test system can simulate the working principle of a steering system more truly, so that the test precision and effect are improved.

The rail protection system is used for preventing the crown block running on a rail system from rushing out, the rail system comprises a straight rail and a bent rail in transition connection with the straight rail, in the walking direction limited by the straight rail, the straight rail is provided with a reserved straight section comprising a rail breaking opening on the first side of the bent rail, and the rail breaking opening is formed in the first side of the bent rail. The straight rail is provided with a conventional straight section on the second side of the bent rail; the track protection system comprises a blocking device fixed to the reserved straight section and a track protection device fixed to the reserved straight section. The steering guide piece is fixed above the conventional straight section; the steering device comprises a steering wheel arranged on the crown block, the steering wheel is configured to be capable of moving in the transverse direction so as to be adjusted to a guide matching position, and when the steering wheel is located at the guide matching position, the steering wheel is driven to rotate. The steering wheel can be matched with the steering guide piece when advancing along the conventional straight section so as to enable the crown block to steer and enter the bent rail, and the transverse direction and the walking direction are perpendicular to each other in the horizontal direction.

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 provides an AI multi-mode voice interaction method based on a vehicle-mounted intelligent terminal and electronic equipment, and the method comprises the steps: synchronously collecting voice information, facial micro-expressions and hand touch actions of a user through a microphone array, an in-vehicle camera and a steering wheel touch sensor on the vehicle-mounted intelligent terminal, and forming multi-mode interaction data; fusing the multi-modal interaction data, and judging a current driving scene through a pre-trained driving scene recognition model; dynamically adjusting voice interaction parameters according to the driving scene judgment result; recognizing a voice instruction of the user based on the adjusted voice interaction parameter; and in combination with instruction preferences in historical interaction data of the user, intention completion is performed on the recognized voice instruction, and a personalized execution instruction is generated. According to the invention, the recognition accuracy and interaction efficiency of the voice instruction are improved.

The invention provides a vehicle control method, electronic equipment and a storage medium, and the method comprises the steps: controlling the driving torque of wheels according to the actual slip rate and the target slip rate of the wheels under the condition that a low-load starting stability control function of a vehicle is activated, a first deviation between the target slip rate and the actual slip rate is maintained in a first set range; and according to the actual yaw velocity and the target yaw velocity of the vehicle, the rear wheel rotation angle is controlled, so that a second deviation between the target yaw velocity and the actual yaw velocity is maintained within a second set range. According to the technical scheme, the acceleration performance of the vehicle under the low-load starting working condition is effectively improved, the steering wheel correction amplitude and frequency of a driver are effectively reduced, the control confidence of the driver is enhanced, and the driving control experience is improved.

The invention discloses an automobile driving state blind area monitoring method and a rearview mirror, and relates to the technical field of blind area monitoring. Comprising the following steps of information collection, specifically, sensors and cameras are installed on wheels of an automobile, a steering wheel steering column, an automobile chassis and a steering system respectively, driving state data of the automobile speed, the steering wheel angle, the automobile acceleration and the steering angle and image data around the automobile are collected in real time, and real-time automobile information data are obtained; according to the system, driving state data such as the vehicle speed, the steering wheel angle, the vehicle acceleration and the steering angle are combined, the blind area around the vehicle is monitored in real time through the sensor and the camera, and when the vehicle steers, the blind area monitoring range is adjusted in real time to adapt to the driving direction change; the rearview mirror can display blind area images in real time, the blind area alertness of a driver can be greatly improved, and the traffic accident risk caused by the blind area is effectively reduced.

The invention discloses an automobile lane changing auxiliary system which comprises a steering lamp operating rod assembly, an electronic control unit, a left rearview mirror module, a right rearview mirror module, a position sensor, a rearview mirror position memory module and an automobile state detection module, and the steering lamp operating rod assembly is arranged on the left side of a steering wheel and provided with a neutral position, a first gear and a second gear; the electronic control unit receives an operating rod signal and outputs a control instruction; the left rearview mirror module comprises a left rearview mirror horizontal rotation actuator and a left rearview mirror lens; the right rearview mirror module comprises a right rearview mirror horizontal rotation actuator and a right rearview mirror lens. Therefore, 0-20-degree adjustment of the rearview mirror is related to the vehicle speed, a blind area is covered at a low speed in a large angle, interference is avoided at a high speed in a small angle, risks are reduced, multi-gear linkage simplifies operation, the rearview mirror returns after being loosened, automatic centering is achieved after lane changing, distraction is reduced, navigation and a corner sensor recognize the road condition, manual reset is not needed, and adaptability is high.

The invention provides an electric power steering active return control method and system, and belongs to the field of electric power steering systems.The electric power steering active return control method comprises the steps that in the rotating process of a vehicle steering wheel, zone control is conducted with the steering wheel rotating angle as the benchmark, and original request torque is obtained; estimating the inertia moment of the steering wheel in the steering wheel aligning process; and calculating the original request torque and the steering wheel inertia torque to obtain a corrected steering wheel torque, and correcting the steering wheel torque according to the corrected steering wheel torque. According to the technical scheme, the aligning torque error caused by rotating speed fluctuation of the steering wheel is eliminated, and particularly under the working condition that a driver is completely released from the hand, the stability of aligning control is remarkably improved.

The invention relates to the technical field of intelligent traffic. The driver state recognition and vehicle control method comprises the steps that driver monitoring information comprises eye movement information, voice information and steering wheel operation information, and the eye movement information, the voice information and the steering wheel operation information are input into a multi-modal fusion judgment model; the multi-modal fusion judgment model dynamically adjusts the weight of each modal feature based on the attention mechanism and in combination with preset driver modal preference parameters to obtain fusion feature representation data, determines driver state information based on the fusion feature representation data, matches a preset composite event recognition rule according to the driver state information, and judges whether the driver state information is abnormal or not. And if the driver state information represents any one of a fatigue state, a distraction state or an emotional stress state, determining a corresponding event triggering level, and generating corresponding vehicle control information based on the event triggering level. The method has the effect of improving the driving safety.

The invention provides an automatic driving method and system and a readable storage medium, and the method comprises the steps: S1, obtaining point cloud data through a laser radar, and outputting the boundary information of an obstacle; s2, acquiring vehicle position information based on a Beidou positioning module; s3, the obstacle boundary information and the vehicle position information are input into a decision-making module, driving behaviors are determined through a preset state machine, and the driving behaviors comprise driving in a lane, lane-borrowing overtaking and decelerating for giving way; s4, track planning is carried out according to the driving behavior; s5, obtaining a track for control based on the smooth path and the planned speed; s6, generating a steering wheel turning angle by adopting an LQR algorithm based on a kinematic model on the basis of a track for control, and generating an acceleration compensation instruction by adopting a double-PID controller in which a position PID and a speed PID are connected in series; and S7, the vehicle executing mechanism controls the vehicle to run through the steering wheel rotation angle and the acceleration compensation instruction.

The invention provides a vehicle drifting control method, device and equipment, a computer readable storage medium and a computer program product. The method comprises the steps that based on target state information and actual state information of a vehicle, a first slip rate component and a second slip rate component are obtained, the first slip rate component is used for slip angle stability control, and the second slip rate component is used for yaw velocity control; determining a left rear wheel slip rate target and a right rear wheel slip rate target based on a basic slip rate target, the first slip rate component and the second slip rate component; and rotating speed calculation is conducted based on the actual state information, the left rear wheel slip rate target and the right rear wheel slip rate target, and the vehicle is controlled based on the obtained left rear wheel rotating speed target and the obtained right rear wheel rotating speed target. According to the invention, a driver can maintain stable drifting of the vehicle only by operating the steering wheel and the accelerator.

The invention is suitable for the technical field of automatic driving, and provides an automatic driving quit judgment method considering the fatigue state of a driver, and the method can evaluate the real-time fatigue state of the driver more comprehensively and accurately through fusing the muscle fatigue and face visual fatigue characteristics of the driver. The input torque threshold value of the steering wheel is dynamically adjusted on the basis, so that when the fatigue degree of a driver is high, pipe connection can be triggered with smaller operating force, and the pipe connection difficulty risk caused by fatigue is reduced; and when the driver is in a good state, larger operating force is needed to avoid false triggering, so that the intelligence and humanization of automatic driving quit judgment are realized on the premise of ensuring safety, and the safety and reliability of man-machine co-driving are improved.

The invention relates to the technical field of vehicle-mounted integrated navigation, in particular to a double-clock synchronization IMU error correction method and system fused with 5G communication. The method comprises the following steps: acquiring a GNSS main clock signal, an auxiliary clock signal and a 5G communication clock signal, and establishing a unified time reference system; constructing a transverse speed prediction model to predict a transverse movement track in the high-speed lane changing process of the vehicle, and combining the transverse movement track with IMU inertial measurement data to calculate a transverse offset residual error of the vehicle; inputting the lateral offset residual error, the lane center line offset, the steering wheel angle data and the yaw velocity data of the vehicle into the improved error risk prediction neural network model for joint processing; and correcting the vehicle navigation state data in real time by using an extended Kalman filter. According to the invention, the 5G communication and GNSS double clock sources are fused in the vehicle high-speed lane changing scene, and high-precision IMU error correction of vehicle lane changing navigation state correction is carried out.

The invention relates to a steering wheel vibration testing device, and belongs to the technical field of new energy automobile accessory testing, the steering wheel vibration testing device comprises a testing table body, the testing table body is composed of a box body, a controller and a cover plate, and the top of the box body is provided with a rotation driving mechanism; the box body is internally provided with a multi-direction reciprocating structure for providing up-down and front-back vibration excitation for the rotary driving mechanism, and the box body is internally provided with an impact simulation mechanism and a transmission mechanism which are respectively linked with the multi-direction reciprocating structure and the rotary driving mechanism; the multi-direction reciprocating structure comprises a reciprocating structure and a connecting rod structure. The steering wheel vibration testing device has the advantages of being flexible in control, high in testing precision and the like, vibration synthesis and torque simulation of the steering wheel in multiple directions are achieved, the problems that a traditional testing device is single in vibration direction, large in energy loss, unreal in testing and the like are solved, the actual driving vibration environment is comprehensively and truly simulated, and the testing accuracy and reliability are improved.

The present invention relates to a reconfigurable steering feel design method and control system for steer-by-wire. The method includes: constructing a steering feel feedback model, the steering feel feedback model including an alignment torque module based on rack force observation, an assist torque module, a friction compensation torque module, a damping compensation torque module, an inertia compensation torque module, and a soft stop limiting torque module, and adding outputs of all modules to obtain a total expected steering feel motor torque; inputting signals of a steering wheel angle, speed and torque, an observed rack force and a vehicle speed into the designed steering feel feedback model to obtain the total expected steering feel motor torque, transmitting it to a steering feel motor, and outputting this steering feel feedback torque to a steering wheel through the steering feel motor; each module in the designed steering feel feedback model being provided with adjustable parameters. Compared with the existing technologies, the present invention incorporates the characteristics of reconfigurability, and can adapt to different steering wheel hardware characteristics and steering feel requirements by adjusting relevant parameters.

A vehicle control method for improving a driving stability of a vehicle includes: obtaining road information and determining a friction coefficient of road surface according to the road information; obtaining first vehicle parameters and a first yaw rate of the vehicle, the first vehicle parameters including a turning angle of steering wheel, and a longitudinal speed, and a lateral speed; determining a second yaw rate of the vehicle according to the first vehicle parameters, the first yaw rate, and the friction coefficient of road surface; determining a yaw moment of the vehicle according to a difference value between the first yaw rate and the second yaw rate; and distributing the yaw moment to a four-wheel driver, the four-wheel driver including four independent drivers for driving wheels. A computing device and a non-transitory storage medium are also provided.

The utility model relates to a cab, a chassis and a light truck, the cab comprises a driving compartment and a steering mechanism, the driving compartment is provided with a cab, the driving compartment comprises a front portion and side portions located on the two sides of the front portion, wheel openings are formed in the side portions, the wheel openings are used for being matched with front wheels, the wheel openings and the front wheels are concentrically arranged, and the steering mechanism comprises a steering wheel arranged in the cab. In the X direction, the value range of the maximum size L4 of the driving compartment is larger than or equal to 1550 mm and smaller than or equal to 1950 mm, the distance between the center point of the steering wheel and the center point of the wheel opening is L11, and the value range of L11 is larger than or equal to-65 mm and smaller than or equal to 335 mm. Wherein L11 is a negative value when the center point of the steering wheel is located on the side, close to the front portion, of the center point of the wheel opening, and L11 is a positive value when the center point of the steering wheel is located on the side, away from the front portion, of the center point of the wheel opening. According to the cab in the embodiment of the invention, the layout of the cab can be reconstructed, a design space is reserved for forming a streamline structure at the front part of the cab in a limited space, and the design of the low-wind-resistance cab is conveniently realized.

The present disclosure relates to the technical field of intelligent driving, in particular to a vehicle driving intelligent assistance system, which includes an electronic control unit and a Controller Area Network (CAN) module, wherein the CAN module is connected with a driving detection module, a vehicle body state detection module, an engine detection module and an environment detection module, wherein the vehicle body state detection module is configured to acquire a steering angle of a steering wheel and a suspension condition, the environment detection module is configured to acquire environmental information around the vehicle and road conditions; the electronic control unit is connected with a vehicle body stabilization system, a vehicle control system and a lane departure early warning module, and the vehicle control system is configured to control acceleration, steering or braking of a vehicle to achieve assisted driving.

The utility model relates to a crown cutter mechanism of an electric tea harvesting vehicle. The tree crown cutting mechanism is characterized in that the tree crown cutting mechanism is installed on a transverse support of the harvesting vehicle, the transverse support comprises single-lug bulb pieces, transverse support square steel and a vehicle body width adjusting mechanism, and the transverse support square steel is connected with a supporting plate arranged on the side face of a lower flange of a steering wheel support steering mechanism through the single-lug bulb pieces on the two sides; the vehicle body width adjusting mechanism is arranged on the transverse support square steel and divides the transverse support square steel into two sections of telescopic structures. When a first motor rotates, a first cylindrical cam mechanism is driven by a coupler to rotate, and a first grooved cam on an upper cutter driving rod and a first grooved cam on a lower cutter driving rod horizontally reciprocate along grooves of the cylindrical cams. The upper cutting knife driving rod and the lower cutting knife driving rod drive the upper cutting knife and the lower cutting knife to do opposite reciprocating motion to cut tea leaves; the structure is ingenious, the stability is high, and the harvesting operation efficiency can be greatly improved.

The invention belongs to the field of intelligent driving interaction, discloses an HUD interaction method and system combining DMS and ADAS functions, and constructs a multi-mode state sensing system by obtaining a real-time image of a driver and steering wheel grip data. According to the method, eye, pupil and head posture recognition based on deep learning is complementary with a grip distribution matrix, so that fatigue behaviors, distraction behaviors and abnormal holding behaviors can be detected earlier and more accurately, and the precision and robustness of driver state recognition are effectively improved. According to the method, after the fatigue degree of the driver is analyzed, the cognitive load of the driver is dynamically evaluated in a finer-grained mode by constructing the composite indexes based on the eyelid opening degree, the sight line deviation, the grip variation coefficient and the respiratory rhythm. The evaluation mode can reflect the attention, mental load and information processing capability of the driver in real time, so that the system can generate a prompt strategy which better conforms to human factors according to the current state of the driver.

The invention relates to the technical field of vehicle chassis control, and discloses a vehicle wheel edge steering angle control method, a vehicle and a controller. The method is applied to a wheel side steering control system and comprises the steps that in a preset communication period, a steering controller receives an angle request generated by at least one of an intelligent driving controller and a steering mechanism; the steering controller confirms a target angle request in the received angle requests based on a preset rule, and generates a corresponding wheel edge angle control instruction and / or a steering wheel control instruction according to the target angle request; the wheel edge angle control instruction is distributed to the at least two wheel edge steering controllers; and the wheel edge steering controller performs steering control on the wheels connected with the wheel edge steering controller based on the received wheel edge angle control instruction. According to the method, independent control over the steering angle of each wheel edge is achieved, and the flexibility requirement and high-response control over vehicle chassis control are improved.

The invention provides a driving behavior dynamic reminding method and system, a vehicle and electronic equipment, and belongs to the technical field of vehicle control, the driving behavior dynamic reminding method comprises the steps that a driving position monitoring video, steering wheel data, the vehicle speed and road traffic information are acquired in real time, and the driving position monitoring video is a video used for detecting the sight direction of a driver; based on the driving position monitoring video and the steering wheel data, analyzing the distraction degree of the driver, and determining a distraction degree value; determining a reminding priority based on the distraction degree value, the vehicle speed and the road traffic information; and reminding the driver under the condition that the reminding priority reaches a preset triggering condition. According to the embodiment of the invention, the attention of the driver can be reliably evaluated, and the driver can be dynamically reminded according to the vehicle speed and the road traffic information.

The invention discloses a steering wheel assembly dimension measurement method and system based on multi-data fusion, and relates to the field of steering wheel assembly dimension measurement, and the method comprises the steps: constructing a standard three-dimensional point cloud model of a steering wheel assembly, and calibrating a reference feature set for dimension and form and location tolerance detection; segmenting the standard three-dimensional point cloud model into K point cloud subsets, and constructing a digital reference comparison knowledge base; collecting three-dimensional point cloud data of a to-be-tested steering wheel assembly in a static state, and generating a to-be-tested static point cloud model; performing identification and space alignment on the static point cloud model to be measured and the standard three-dimensional point cloud model based on each physical component; extracting point, surface and line reference features, and calculating the size and form and location tolerance of the steering wheel assembly; and constructing a dynamic detection model, and calculating dynamic performance indexes of the dynamic detection model. Intelligent recognition and alignment of the steering wheel assembly from disordered point cloud to engineering semantics are achieved, and therefore comprehensive detection of the size, form and location tolerance and dynamic performance is automatically completed.

The utility model provides a steering structure and an all-terrain vehicle. The steering mechanism is used for connecting a steering wheel and a steering gear of the vehicle and comprises a support, a first shell, an adjusting device, a steering shaft and a power-assisted steering device. The support is used for connecting a vehicle body. The first shell is rotationally connected with the bracket; the adjusting device is connected with the first shell and the support so as to drive the first shell to rotate. One end of the steering shaft is connected with the steering wheel, and the other end is connected with the power-assisted steering device through a universal joint; the power-assisted steering device is connected with a steering gear through a universal joint. The first shell, the adjusting device and the power-assisted steering device in the steering system are integrally installed on the support, so that the situation that the assembly difficulty is large due to the fact that the first shell, the adjusting device and the power-assisted steering device are connected with a vehicle body through other parts is avoided, the number of the parts is reduced, meanwhile, the compactness of the overall structure and the precision control performance of manufacturing and assembly are improved, and the assembly difficulty is reduced; and the installation process with the vehicle body is simplified.

The invention aims to solve the technical problems of insufficient redundant architecture design, low fault diagnosis and switching efficiency and low system integration in the prior art, and provides a front wheel steering engine redundancy control system and method for an unmanned aerial vehicle. A double-ARM architecture cooperative control strategy is adopted, redundant fault-tolerant control of a mechanical coupling single-shaft driving system is achieved, two ARM chips independently drive two motors respectively, the motors are meshed through precision gears to form a mechanical coupling output structure used for driving a corresponding gear set, the gear set is in transmission connection with a gear mechanism, and the gear mechanism is in transmission connection with the gear mechanism. The steering wheel is matched with a nose landing gear of the unmanned aerial vehicle to realize steering; and each ARM chip is provided with a CAN port and an RS485 communication serial port and establishes a parallel data receiving mechanism.

A method for operating a motor vehicle (100) is described, wherein the motor vehicle (100) has a shift lever (10) with a first lever (1) on a first side of a steering wheel (3) of the motor vehicle (100) and a second lever (2) on a second side of the steering wheel (3), wherein in a first operating state of the motor vehicle (100) a forward gear is selected with the first lever (1) for driving the motor vehicle (100) forward and a reverse gear is selected with the second lever (2) for driving backward, wherein in a second operating state of the motor vehicle (100) a direction indicator (4) of the motor vehicle (100) is switched with the first lever (1) so that it indicates a change of direction of the motor vehicle (100) to the first side and with the second lever (2) the direction indicator (4) is switched so that it indicates a change of direction of the motor vehicle (100) to the second side.

The invention provides a vehicle steering wheel and road wheel steering synchronous self-adaptive control method and system, and relates to the technical field of vehicle control. Comprising the following steps: calculating a first steering torque by adopting a feedforward control mode based on an obtained rotating angle and rotating speed of a vehicle steering wheel; performing steering control on the road wheels according to the first steering torque to obtain actual steering angle data of the road wheels; second steering torque is calculated through a PID control closed loop based on the angle deviation between the rotation angle of the vehicle steering wheel and the actual rotation angle of the road wheel; and carrying out dynamic weighting calculation on the first steering torque and the second steering torque to obtain a synthetic motor torque, and carrying out steering control on the vehicle according to the synthetic motor torque. The steering angle of the steering wheel and the steering angle of the road wheel are controlled to achieve rapid, accurate and stable synchronous steering, and the driving safety and comfort are greatly improved.

A motor vehicle includes a passenger compartment, a steering wheel configured to be moveable between a use position and a stowed position, a floor, a seating rail system positioned on the floor and extending along a longitudinal direction of the motor vehicle, and a plurality of seating assemblies arranged in the passenger compartment in a first row, a second row, and a third row and configured to be actuated to a plurality of positions. Also included is a center console on a center console rail system extending longitudinally on the floor. A controller is configured to receive an input commanding a selected passenger compartment arrangement. The controller controls the actuators to position the seat assemblies, the center console and the steering wheel in the commanded passenger compartment arrangement.