11 results about "Countersteering" patented technology

The application discloses a vehicle control method, a controller and a vehicle, and relates to the technical field of vehicles. The vehicle control method comprises the following steps: in response to an obstacle avoidance trigger, performing obstacle avoidance trajectory planning on the vehicle; and performing reverse steering control on the front wheels and the rear wheels of the vehicle based on the planned obstacle avoidance trajectory. Thus, through independent front and rear wheel steering collaborative control, the vehicle can obtain a smaller turning radius and a faster yaw response than traditional front wheel steering in the initial stage of obstacle avoidance, the problem of yaw response lag caused by the front wheel steering architecture in the prior art is overcome, and the steering timeliness and obstacle avoidance safety in an emergency working condition are improved.

A computer system for a vehicle, the system including processing circuitry configured to: determine a steering torque applied from a steering wheel of the vehicle; control a steering assist system to apply a steering torque overlay to at least one steerable wheel of the vehicle in the same direction as the determined steering torque applied from the steering wheel; compare the applied steering torque overlay with the determined steering torque applied from the steering wheel, predict a wheel blocking event based on the comparison, and apply a counter steering torque overlay using the steering assist system, that is opposite the steering torque from the steering wheel.

The invention relates to a low-speed intelligent unmanned vehicle all-wheel steering-driving cooperative control system and method, and relates to the field of intelligent unmanned vehicle control. According to the technical scheme, the pain point that torque distribution and steering angles of a traditional four-wheel-drive unmanned vehicle are disjointed is effectively solved, the MPC is controlled through model prediction to construct the multi-target optimization model, steering precision and energy consumption are considered, tire eccentric wear and invalid energy consumption are reduced, the service life and endurance of parts are prolonged, and the operation cost is remarkably reduced. In addition, a steering strategy is dynamically adjusted based on the running speed, rear wheels reversely steer at low speed, the turning radius is greatly reduced, and the obstacle avoidance flexibility of a narrow roadway is improved. At a high speed, the rear wheels steer in the same direction to enhance the stability, optimize the emergency lane changing control precision and adapt to complex working conditions, the control period is only 10-50 ms, the response is rapid, working condition changes can be adapted in real time, the practicability is extremely high in various low-speed scenes, and the control performance of the unmanned vehicle is comprehensively optimized.

Method for controlling the implementation of a drift driving state of a vehicle, wherein the method comprises: Reduce, by means of a control, the front wheel distribution torque of an all-wheel drive (AWD) system when the vehicle enters a curve in a state where a drift mode is selected and the system is engaged; and Enabling, through control, the vehicle to enter a drift driving state by adding slip control torque corresponding to the lateral acceleration of the vehicle to the front wheel distribution torque when rear wheel slip is generated; characterized by Maintaining, by controlling, the vehicle's drift driving state by releasing the entire front wheel distribution torque when a counter-steering state is confirmed by a driver.

The invention relates to a method for controlling a motor vehicle comprising an EAS and an ESP implementing the method, consisting, after having detected (100) a roll angle greater than a first determined threshold, referred to as critical threshold, corresponding to the start of tilt of the vehicle, in controlling (200) the EAS to apply (300) a first steering torque to the steered wheels of the vehicle with a determined steering angle and a positive determined acceleration, in the tilting direction, and then, when the roll angle reaches a second determined threshold, lower than the first threshold, and with a determined negative angular acceleration, in applying (400) a determined counter-steering torque, in a direction opposite to the tilting direction; the successive steering and counter-steering torques making it possible to counter the tilting force of the vehicle and allowing resumption of control (500) of the vehicle by the ESP.

Steering devices and methods for a vehicle are provided, where the method includes monitoring failure of an electric steering system, calculating a target yaw rate value and a target velocity value of the vehicle based on a signals received from one or more sensors, in response to detecting the failure in the electric steering system, detecting a wheel angle of a front wheel portion, performing backup steering based on generating slip in the vehicle to move the vehicle in a direction corresponding to an intended direction, and controlling a velocity of the vehicle to drive the vehicle based on an intended velocity, wherein the performing of the backup steering includes calculating a braking torque for each of the front wheel portion and a rear wheel portion based on the velocity and an steering angle, and distributing the braking torque to the front wheel portion and the rear wheel portion.

The invention relates to a method for controlling a wired steering system for a motor vehicle (V1) comprising, on the one hand, a steering wheel (V2) electronically connected to a rack and pinion meshing with a set of wheels. The method comprises a first control law based on a nominal variable ratio (steering wheel rotation angle / wheel steering angle), designed, for a given steering wheel rotation angle (V2), to optimize wheel steering as a function of vehicle speed. The method is characterized in that it further comprises a second control law designed to allow, in the event of countersteering during oversteer, full wheel steering with a reduced steering wheel rotation angle (V2), regardless of vehicle speed (V1). (Fig. 1)

Driver assistance system with at least one function module by which a counter-steering torque (ML) is applied to the steering wheel of a motor vehicle (F1) depending on defined parameters (d) and depending on defined situations (S1, S2) of different levels of danger, with at least one electronic control unit and with sensors by which the control unit queries the parameters (d) and the situations (S1, S2) of different levels of danger, wherein in the electronic control unit a specific characteristic curve (K1, K2) of the counter-steering torque is specified for each defined situation (S1, S2) or all situations (S1, S2) of the same level of danger depending on at least one parameter (d) to be taken into account for all situations (S1, S2), characterized in that For situations (S1, S2) of two levels of danger, a specific characteristic course (K1, K2) is specified for each level of danger, whereby the courses (K1, K2) behave in essentially opposite directions.

The invention relates to a large-diameter liquid rocket transportation device and a transportation method thereof, and belongs to the technical field of carrier rocket road transportation. Comprising a transportation frame, a steering assembly, a suspension assembly, a front transportation blanking cap and a rear transportation blanking cap. The transportation frame comprises a front frame body, a connecting frame and a rear frame body, and the connecting frame is higher than the front frame body and the rear frame body, so that the whole transportation frame is of an arch-shaped structure. The suspension assembly comprises a suspension swing arm, a damper, a suspension air bag and an air bag support, and height adjustment and damping buffering can be achieved. The two steering assemblies control independent steering of the conveying wheels on the front frame body and the rear frame body correspondingly, and the same-direction or reverse-direction steering strategy is achieved according to the size of a curve. The front transportation blanking cap integrates a lifting point connector and a transportation supporting shaft, and the rear transportation blanking cap is provided with an adjustable tail spraying cover to protect an engine spraying pipe. The technical problems of longitudinal slope trafficability, height limiting adaptability, turning flexibility and the like in large-diameter liquid rocket road transportation are solved.

Systems and methods of controlling a vehicle in a stable drift are provided. With the goal of enhancing the driver experience, the disclosed drift control systems provide an interactive drift driving experience for the driver of a vehicle. In some embodiments, a driver is allowed to take manual control of a vehicle after a stable drift is initiated. For safety reasons, an assisted driving system may provide corrective assistance to prevent the vehicle from entering an unstable / unsafe drift. In other embodiments, an autonomous driving system retains control of the vehicle throughout the drift. However, the driver may perform “simulated drift maneuvers” such as counter-steering, and clutch kicking in order to communicate their desire to drift more or less aggressively. Accordingly, the autonomous driving system will effectuate the driver's communicated desire in a manner that keeps the vehicle in a safe / stable drift.

The invention relates to a system developed to perform the basic functions of the vehicles requiring balancing, which will provide safe driving conditions without the need for driving skills and experience, such as counter steering, at all speed values and using a minimum number of sensors, and to an operation method of this system.