10774 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.

Methods and apparatus to adjust a steering angle of a vehicle in a self-driving mode are described herein. An example vehicle disclosed herein includes a steering controller including instructions and programmable circuitry to execute the instructions to access a path follower (PF) angle request, generate a virtual boost curve (VBC) angle request based on a torque input to a steering wheel, determine an angle blending weight based on the torque input and a speed of the vehicle, determine a final angle request based on the PF angle request, the VBC angle request, and the angle blending weight, and convert the final angle request to a torque request to be used to adjust a steering angle of the vehicle via a motor.

A method for cooperative vehicle operation includes receiving a first target angle signal associated with a handwheel of a vehicle, receiving a second target angle signal associated with an autonomous steering system of the vehicle, and, in response to a determination that a handwheel angle error between the first target angle signal and the second target angle signal is less than a handwheel error threshold: generating a handwheel motor torque command based on a position control motor torque command and a torque control motor torque command; and controlling a position of the handwheel of the vehicle based on the handwheel motor torque command.

A brake system includes a master cylinder generating pressure at first and second MC outputs for actuating first and second pairs of wheel brakes. A secondary brake module is configured to provide fluid at first and second PTU outputs for actuating the wheel brakes. The secondary brake module includes an electric motor configured to selectively pressurize the hydraulic fluid by transmitting rotary motion to at least two pump pistons. A pump inlet attenuator is interposed hydraulically between a reservoir and the pump pistons and in direct fluid connection with the reservoir via a single return line. An electronic control unit controls at least one of the secondary brake module and the master cylinder responsive to a brake pressure signal. The pump inlet attenuator regulates pressure in the single return line to reduce pressure fluctuations at an inlet side of each pump piston via solely mechanical pressure attenuation.

Described therein is an improved assisted steering system includes a built-in / integrated ring on the steering wheel, for use with a mobile / removable drive unit. In various implementations, the built-in / integrated ring is non-removeable, such that issues with misalignment do not occur from installation error or during use. Further, because the drive unit is mobile / removable, the drive unit may be moved between vehicles without removing the steering wheel. In various implementations, the assisted steering system may be used by multiple vehicles simply by installing the steering wheel with integrated ring in each vehicle desired to have assisted steering and installing the drive unit in the vehicle desired to be driven at that time. Further because the steering wheel is not removed when moving the drive unit, the vehicle remains operational and drivable by manual steering.

A vehicle-mounted display device, a vehicle steering wheel assembly, and a vehicle. The vehicle-mounted display device comprises a decorative piece (1), wherein the decorative piece (1) comprises a connection portion (4), a touch-control display screen (2), a first mounting position (11) and a second mounting position (12); the decorative piece (1) is mounted on a base (13) of a vehicle steering wheel (3) by means of the connection portion (4); the first mounting position (11) is used for mounting the touch-control display screen (2), and the second mounting position (12) is used for mounting a vehicle airbag; and the first mounting position (11) and the second mounting position (12) are arranged side by side on the decorative piece (1), and the first mounting position (11) is located above the second mounting position (12) in the direction in which the first mounting position (11) and the second mounting position (12) are arranged.

The invention discloses a driver state sensing system based on physiological indexes and external behavior analysis, which relates to the technical field of vehicle active safety control, and comprises a sensor group integrated in a driver contact or close area and a vehicle control part and used for collecting physiological signals and behavior characteristic signals of a driver in real time, the physiological signals at least comprise heart rate and skin electric signals, and the behavior characteristic signals at least comprise eyelid movement, head posture and steering wheel operation signals. According to the driver state sensing system, the comprehensiveness and accuracy of driver state sensing are remarkably improved by integrating physiological indexes and external behavior analysis, the limitation of single signal judgment is effectively overcome through a multi-source signal fusion mechanism, the reliability of state evaluation is ensured, and the advanced signal preprocessing technology adopted by the system is high in reliability. The data anti-interference capability is enhanced, the feature extraction precision is improved, and the robustness of the model is enhanced.

The invention discloses a vehicle control method and device and a vehicle, and belongs to the technical field of vehicles. Comprising the steps that under the condition that a steering wheel of a target vehicle is kept in the middle and rear wheels of the target vehicle steer abnormally, a target front wheel steering angle is determined on the basis of the difference value between the current rear wheel steering angle of the target vehicle and a target rear wheel steering angle and vehicle parameters, and the target rear wheel steering angle is the angle of the rear wheels of the target vehicle in the middle-back state; the target front wheel rotation angle is the rotation angle of the front wheels of the target vehicle for compensating the abnormal steering of the rear wheels; determining a target compensation torque based on the target front wheel steering angle; and controlling a front wheel motor of the target vehicle to output the target compensation torque so as to keep the target vehicle in a straight driving state by adjusting the front wheel angle of the target vehicle. Thus, the target compensation torque is output through the front wheel motor, track deviation caused by abnormal steering of the rear wheels can be compensated, and therefore the target vehicle can be kept running in a straight line, and the driving safety is improved.

The invention discloses a steering device, a steering system and a vehicle, relates to the technical field of vehicles, and aims to solve the problem of how to reduce the space of a driving position occupied by a steering wheel. The steering device comprises a steering wheel, the steering wheel comprises a folded state and an unfolded state, and the steering wheel is configured to enable the steering wheel to be switched from the unfolded state to the folded state through folding action. When the vehicle is in a first driving state, the steering wheel is in an unfolded state, and the first driving state is a state that the vehicle is in a driving state and auxiliary driving of the vehicle is not started.

Methods and apparatus to control stowable steering wheels are disclosed herein. An example apparatus disclosed herein includes a steering column assembly including a sensor, a first portion, and a second portion moveable relative to the first portion, machine readable instructions, and programmable circuitry to at least one of instantiate or execute the machine readable instructions to move the first portion relative to the second portion, determine based on an output of the sensor that the first portion has encountered an obstruction, and after determining the first portion has encountered the obstruction, stop a movement the first portion.

In one example, a pallet jack cap system includes a stabilization outrigger secured around steer wheels of a pallet jack, a bonnet in an elevated position over forks of the pallet jack, an anchor base for attachment to the pallet jack, and a vertical extension system between the anchor base and the bonnet. The vertical extension system supports the bonnet in the elevated position over the forks of the pallet jack. The vertical extension system can include an elevating vertical support assembly, an elastic counterpoise to assist with positioning the bonnet at a particular elevation based on an extension of the vertical support assembly, and an extension lock to secure the vertical support assembly at the particular elevation. The bonnet can be lowered down over a unit load on a pallet transported by the pallet jack, to secure the unit load and items in transport by the pallet jack.

The invention relates to the technical field of driving, and particularly discloses a mobile phone management and control method and a control system in a driving process. Vehicle running state data and mobile phone multi-mode sensing data are obtained, vehicle CAN bus information and mobile phone sensor data are combined, a motion coupling degree value is calculated on the basis of deviation of a steering wheel angle and mobile phone acceleration, the operation synchronization rate is analyzed through accelerator operation and gyroscope response, hand action coordination is evaluated, and the hand action coordination is evaluated. The method comprises the following steps: calculating a spatial constraint deviation value by combining a magnetometer orientation and a driving position coordinate offset degree; monitoring an abnormal posture of a driver; generating a risk assessment value by fusing three indexes; dynamically controlling a mobile phone function; according to the system, through multi-source data fusion and a hierarchical management and control strategy, emergency communication requirements are balanced on the premise of ensuring driving safety, distracted driving behaviors are accurately identified, and driving potential safety hazards caused by use of a mobile phone are solved.

Electro-Hydraulic Steering System and Method An electro-hydraulic steering system (1) includes a steering wheel (2) for setting a steering demand and a hydraulic steering actuator (11) for turning the steered wheel in response to the steering demand. An electrically controlled hydraulic valve (26) is arranged to supply pressurised fluid to the hydraulic steering actuator to turn the steered wheel according to a variable steering ratio. An electronic control unit (21) receives an angular position of the steering wheel and an angular position of the steered wheel. The control unit is operative to determine an angular misalignment between the steering wheel and the steered wheel and carry out a realignment procedure. The realignment procedure comprises calculating a compensation angle based on the angular misalignment and controlling the steering ratio based on the compensation angle by controlling the hydraulic valve to adjust the supply of pressurised fluid to the hydraulic steering actuator.

The invention provides an automobile control device foaming optimization control method based on multivariate temperature coupling analysis, and relates to the technical field of manufacturing process control, and the method comprises the following steps: based on supporting frame attribute characteristics and a material component ratio, according to a preset foaming processing stage and a foaming evaluation function, in a simulation foaming space, according to a foaming evaluation function; performing simulation optimization on the first temperature control parameter, the second temperature control parameter, the third temperature control parameter and the fourth temperature control parameter to generate an optimal temperature control strategy; and according to the preset foaming processing stage and the optimal temperature control strategy, executing foaming control of the target steering wheel. The technical problems that a traditional foaming technology pays more attention to control of single temperature, multiple influences of different temperature changes on foaming reaction cannot be effectively considered, foaming is not uniform, and the foam structure is not stable can be solved; by accurately controlling the four temperature control parameters, the mutual influence and coupling relationship among the temperatures can be fully considered, and uniform temperature distribution and stable foam structure in the foaming process are ensured.

Provided are a high-frequency road sense generation method and apparatus, a device, a medium, and a vehicle. The method comprises: obtaining rack force measurement data during vehicle driving; querying the correspondence between a rack force and the vibration intensity of a steering wheel, and determining the vibration intensity of the steering wheel corresponding to the rack force measurement data; determining a motor torque of the steering wheel corresponding to the vibration intensity of the steering wheel; and controlling a motor (42) of the steering wheel to act on the basis of the motor torque of the steering wheel. In a steer-by-wire-based vehicle, the rack force measurement data is used for reflecting high-frequency road sense excitation of a road surface, a driver controls the steering wheel on the basis of the vibration intensity of the steering wheel, and can make a control action responding to the high-frequency road sense excitation of an actual road surface, thereby ensuring driving safety.

The invention relates to the technical field of steering systems, in particular to an angle control method for smooth angle response and rapid intervention. An angle control method for smooth angle response and rapid intervention comprises an angular velocity feed-forward PID algorithm, and the angular velocity feed-forward PID algorithm comprises the steps that the difference between a request angle and an actual angle is obtained to obtain an angle difference, the angle difference is subjected to the PID algorithm to obtain target motor torque, the target motor torque is converted into actually-executed motor torque through gradient output, and a steering wheel is controlled to rotate. The method is characterized in that the angle smooth response comprises a low-frequency compensation strategy and a high-frequency compensation strategy. Compared with the prior art, the angle control method for smooth angle response and rapid intervention is provided, the torque of the motor is calculated by adopting an angular velocity feed-forward PID algorithm, a low-frequency and high-frequency compensation strategy and a rapid intervention strategy are introduced, and the purpose of controlling a steering wheel to smoothly and rapidly reach a target angle can be achieved.

A steering system includes a steering wheel rotation limiting device being arranged radially offset to the steering wheel hub and including a base being fixed to the or another non-rotatable component of the steering system and a sliding element. The base includes two opposing end stop surfaces, and the sliding element is axially slidable parallel to the axis of rotation relative to the base and relative to the steering wheel hub between the two opposing end stop surfaces. The sliding element includes a projection that engages a spiral groove formed on a circumferential surface of the steering wheel hub so that rotation of the steering wheel hub causes axial movement of the sliding element, and so that abutment of the sliding element with one of the two end stop surfaces blocks movement of the sliding element and rotation of the steering wheel hub.

The invention discloses a chassis coordination control method and system based on tire side deviation state evaluation, and relates to the technical field of four-wheel steering four-wheel drive vehicle dynamics control. The method comprises the steps that an expected front wheel rotation angle is determined based on an expected steering wheel rotation angle input by a driver, and a front wheel rotation angle is determined; further determining a feed-forward front wheel steering angle, a feed-forward rear wheel steering angle and an additional yaw moment based on feed-forward control and feedback control, determining a first tire slip angle and a second tire slip angle based on a road adhesion coefficient, and further determining a wheel torque control weight, a feedback front wheel steering angle control weight and a feedback rear wheel steering angle control weight; and further determining a driving yaw moment, a feedback front wheel steering angle and a feedback rear wheel steering angle, determining a total longitudinal force based on an expected longitudinal acceleration input by a driver, and performing four-wheel torque distribution based on the total longitudinal force and the driving yaw moment to obtain a four-wheel driving torque. The driving stability of the vehicle under the limiting working condition can be improved.

The invention belongs to the technical field of weeding equipment, and particularly relates to an intelligent mower and an intelligent control system.The intelligent mower comprises a chassis, an embedded controller, a cutterhead lifting assembly, a hard object detection assembly and an infrared obstacle avoidance assembly, and the embedded controller, the cutterhead lifting assembly, the hard object detection assembly and the infrared obstacle avoidance assembly are arranged on the chassis; a driving wheel and a steering wheel are arranged on the chassis, the cutter head lifting assembly comprises a blade, the blade can ascend and descend, the hard object detection assembly is arranged on the lower portion of the front end of the chassis, and the infrared obstacle avoidance assembly is arranged on the upper portion of the front end of the chassis. Hard objects on a path are detected through the hard object detection assembly, the blade is lifted through cooperation with the lifting assembly so that the blade can avoid the hard objects and cannot be clamped or damaged, obstacles on the path are detected through the infrared sensor, and obstacle avoidance of the whole machine is achieved through cooperation with the walking module and the steering module. The image processing module can identify an untrimmed area on the lawn, and the navigation positioning module is matched to realize no-dead-corner trimming of the lawn.

The invention relates to the technical field of electromagnetic wire production, in particular to a spraying device for electromagnetic wire production, which comprises a supporting table, a mounting groove is formed in one side surface of the supporting table in a penetrating manner, positioning wheels are rotatably mounted on the inner side of the mounting groove in a vertically symmetrical manner, and a supporting frame is fixedly mounted on the inner side wall of the supporting table. A supporting table is fixedly connected to the upper end of the supporting frame, a steering wheel is rotatably mounted at the end of the supporting frame, a circular groove is formed in the upper end of the supporting table from top to bottom in a penetrating mode, and a side plate is fixedly connected to one end of the top of the supporting table. Then the electromagnetic wire body sequentially penetrates through inner cavities of the cleaning mechanism, the paint spraying collecting mechanism, the transmission mechanism, the rotary paint spraying mechanism and the drying mechanism; at the moment, an output shaft of a servo motor drives a driving gear to rotate, and the driving gear drives an outer gear ring to rotate.

The invention discloses a driver health monitoring and early warning method and system, and belongs to the technical field of automobile intelligent cabins, and the method comprises the steps: calling camera data in a DMS in an intelligent cabin, positioning the chest of a driver, and obtaining three-dimensional coordinates of the chest part of the driver in a driving cabin space; adjusting a millimeter wave radar integrated in a steering wheel to send a radar signal by combining the three-dimensional coordinates positioned to the chest part; receiving an echo signal of the radar signal interfered by the fluctuating cavity motion of the thoracic cavity part; carrying out real-time extraction on a respiration signal and a heartbeat signal based on the echo signal to obtain a vital sign signal; performing feature extraction on the vital sign signals to obtain vital sign parameters; analyzing the vital sign parameters; and when the vital sign parameter exceeds a threshold value, sending an exception handling request. According to the method, cardiopulmonary data of a driver are analyzed, and occurrence of sudden cardiopulmonary diseases such as inhibitory respiration and heartbeat pause is judged in advance.

The invention belongs to the technical field of vehicle dynamics, and relates to an automatic driving vehicle dynamics parameter adaptive identification method based on SQP and GRNN, and the method comprises four parts: automatic driving vehicle mechanism model establishment, GRNN model establishment, training set acquisition based on the SQP algorithm, and parameter adaptive identification based on the trained GRNN model. Kinetic model key parameters which are difficult to obtain by a conventional method are solved in an off-line mode by using an automatic driving automobile mechanism model and an SQP algorithm, and a solving result is used as a training set of a GRNN (Generalized Recurrent Neural Network) model; and the trained GRNN model has the capability of processing the nonlinear relationship among the steering wheel angle, the vehicle speed, the tire cornering stiffness, the suspension roll stiffness and the roll damping in the automatic driving vehicle mechanism model. Finally, accurate kinetic parameters are identified in real time according to the operation condition of the vehicle, and a foundation is laid for effective control of the automatic driving vehicle.

The invention belongs to the technical field of automobile intelligent driving, and provides an automobile front panoramic image display method and system, a storage medium and electronic equipment, and the method comprises the steps: obtaining an automobile front image, and generating a panoramic display image according to the automobile front image; acquiring real-time vehicle speed and steering wheel angle data of vehicle driving, calculating a predicted driving track of the vehicle according to the real-time vehicle speed and the steering wheel angle data, and generating a first panoramic image in combination with the panoramic display image; the information of the obstacle in front of the vehicle is obtained, the position of the obstacle in front of the vehicle is determined by combining the information of the obstacle in front of the vehicle with the first panoramic image, the position of the obstacle in front of the vehicle is marked in the first panoramic image, a second panoramic image is generated, and the PHUD display module displays the second panoramic image. The front view of a vehicle obtained by a driver is wider, images are displayed on the front windshield more clearly and are not prone to being influenced by external light and interference, and driving safety and convenience are improved.

The invention provides a vehicle control method, a vehicle controller and a vehicle for vehicle pendulum type garage entering and exiting, and the method is used for controlling a braking system and a front-drive motor of the vehicle after a user starts a vehicle pendulum type garage entering and exiting function. The method comprises the steps of controlling a braking system to brake a left rear wheel of the vehicle and controlling a front-drive motor to drive two front wheels of the vehicle to reversely rotate to enable the vehicle to enter a garage in response to the situation that the angle of a user rotating a steering wheel of the vehicle rightwards is larger than a preset angle and the opening degree of the user operating an accelerator pedal of the vehicle is larger than a first preset opening degree. The method further comprises the steps of controlling a braking system to brake a right rear wheel of the vehicle and controlling a front-drive motor to drive two front wheels of the vehicle to rotate forwards so as to enable the vehicle to leave the garage in response to the situation that the angle of turning the steering wheel of the vehicle leftwards by the user is larger than a preset angle and the opening degree of operating an accelerator pedal of the vehicle by the user is larger than a first preset opening degree. By using the method, the parking distance of the vehicle can be effectively reduced while the dynamic state of the vehicle body is accurately controlled.

A method for controlling a steer-by-wire steering system for a motor vehicle having steerable front and rear wheels in emergency steering operation comprises checking the steering system for the presence of a fault state and performing the emergency steering operation to maintain original driving behaviour if a fault state is detected, including: determining a target lateral acceleration on the basis of a current steering wheel position and a current vehicle speed, determining a yaw moment and, from the yaw moment, a general wheel steering angle for the original driving behaviour, where the general wheel steering angle is equal to a difference between a front wheel steering angle and a rear wheel steering angle, determining a front wheel steering angle correction and a rear wheel steering angle correction, and determining drive torques and / or braking torques for the front wheels and the rear wheels, which are distributed appropriately by the torque vectoring system.

The embodiment of the invention discloses a vector control method and device for a steering wheel chassis. The method at least comprises the steps that the target speed and the target angular speed of a steering wheel chassis at the next moment are obtained; the target speed comprises a target transverse speed and a target longitudinal speed; obtaining pre-stored size parameters of each steering wheel; the size parameters at least include the distance between the mass center of the steering wheel chassis and each steering wheel in the coordinate system of the steering wheel chassis in the coordinate axis direction, and the original point of the coordinate system of the steering wheel chassis is located at the mass center of the steering wheel chassis; and calculating a control angle of a steering motor and a control speed of a driving motor corresponding to each steering wheel at the next moment based on a pre-constructed motion planning control strategy according to the target speed, the target angular speed and the size parameters of each steering wheel. By applying the scheme provided by the embodiment of the invention, the steering wheel chassis can be flexibly controlled.

In a vehicle steering assist device that includes an electric power steering device that generates a control torque that modifies a return torque for urging a steering wheel to a neutral position, a steering assist ECU that controls the control torque, and a surrounding information detecting device (camera sensor, radar sensor) that detects at least information in front of a vehicle, the control torque is controlled such that a ratio of a change amount of the modified return torque to a change amount of a steering operation amount at the start of avoidance steering decreases when an obstacle is detected in front of the vehicle by the surrounding information detecting device and the avoidance steering for the vehicle to avoid collision with the obstacle is determined to be required.

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.