10 results about "Roll rate" patented technology

A suspension assembly includes an upper control arm, a lower control arm, a damper coupled between the lower control arm and a frame rail, and a roll control cylinder coupled between the lower control arm and the frame rail. The roll control cylinder includes a body defining an internal cavity, a piston movably arranged within internal cavity, and a rod coupled to the piston and extending outwardly from the body. The piston divides the internal cavity into a piston chamber and a rod chamber. The suspension assembly further includes an accumulator in fluid communication with the piston chamber, and a charge supply in fluid communication with the accumulator. The charge supply is configured to selectively change a charge pressure within the accumulator to adjust a roll rate or stiffness defined by the roll control cylinder.

The invention provides a vehicle state determination method, device and equipment. The vehicle state determination method comprises the steps of obtaining a target motion working condition of a vehicle at a first moment; obtaining a target method corresponding to the target motion working condition and a value of the first state parameter at the first moment; wherein the target method comprises a kinematics method and / or a dynamics method; the first state parameters comprise the longitudinal speed and the front wheel turning angle of the vehicle; and at least one of a torque and a lateral force of the vehicle; determining an initial value of a target state parameter of the vehicle at the first moment according to the value of the first state parameter at the first moment by adopting a target method; wherein the target state parameters comprise at least one of the yaw velocity, the roll angle velocity, the roll angle and the lateral velocity; and determining a target value of the target state parameter at the first moment according to the initial value of the target state parameter at the first moment. The target state parameter value of the vehicle can be accurately determined according to different motion working conditions of the vehicle.

An apparatus of a vehicle includes one or more processors and a memory storing one or more programs that, when executed by the one or more processors communicating with the memory, are configured to cause the apparatus to estimate, based on a driving image of a preceding vehicle captured by a camera of the vehicle, a roll rate of the preceding vehicle, determine a possibility of a pothole avoidance, wherein the possibility is determined based on the roll rate of the preceding vehicle, driving information about the preceding vehicle, and driving information about the vehicle, output a signal indicating the possibility, and control, based on the signal and based on an estimated pothole, autonomous driving of the vehicle.

An apparatus of a host vehicle includes one or more processors and memory storing one or more programs that, when executed by the one or more processors in communication with the memory, are configured to cause the apparatus to: estimate a roll rate of a front vehicle based on a travel image of the front vehicle captured by a camera of the host vehicle; determine a pothole avoidance likelihood, wherein the likelihood is determined based on the roll rate of the front vehicle, travel information of the front vehicle, and travel information of the host vehicle; output a signal indicative of the likelihood; and control autonomous driving of the host vehicle based on the signal and based on the estimated pothole.

In the present invention, a controller includes: a reception unit that acquires sprung acceleration, which is acceleration in the vertical direction, roll rate, and pitch rate from an IMU included in a vehicle; a sprung acceleration calculation unit that calculates the sprung acceleration of each wheel of the vehicle on the basis of the values input to the reception unit and specifications of the vehicle; a stroke speed calculation AI that calculates the stroke speed of a suspension device of each wheel using a mathematical model of the vehicle that receives, as input, the sprung acceleration of each wheel and a value indicating the force that is generated by a corresponding variable damper; a sprung speed calculation AI that calculates the spring speed of each wheel; and a ride comfort control unit that determines a control amount for controlling the variable damper from the sprung speed and the stroke speed.

A suspension assembly includes an upper control arm, a lower control arm, a damper coupled between the lower control arm and a frame rail, and a roll control cylinder coupled between the lower control arm and the frame rail. The roll control cylinder includes a body defining an internal cavity, a piston movably arranged within internal cavity, and a rod coupled to the piston and extending outwardly from the body. The piston divides the internal cavity into a piston chamber and a rod chamber. The suspension assembly further includes an accumulator in fluid communication with the piston chamber, and a charge supply in fluid communication with the accumulator. The charge supply is configured to selectively change a charge pressure within the accumulator to adjust a roll rate or stiffness defined by the roll control cylinder.

The present application provides a suspension control method and a control device under vehicle steering. The method includes: determining the roll angle, pitch angle and roll rate of the body of the target vehicle based on the left front displacement, right front displacement, left rear displacement and right rear displacement; determining the roll control torque by using a first curve and a second curve based on the roll rate and the vehicle speed of the target vehicle at the current moment; determining the pitch control torque by using a third curve based on the roll angle and the pitch angle; determining the roll control weight coefficient and the pitch control weight coefficient by using a fourth curve and a fifth curve; and determining a drive value based on the roll control torque, the pitch control torque, the roll control weight coefficient and the pitch control weight coefficient. Through the method and the device, the problems of low consistency performance when the vehicle turns and the inability to well coordinate the handling requirements and the comfort requirements can be overcome.

A computer-implemented method for checking the plausibility of a measured or determined roll rate of a vehicle body of a vehicle about a longitudinal axis of the vehicle, in which a transverse acceleration change or a transverse jerk is calculated from a measured or determined transverse acceleration in the transverse direction of the vehicle, on the basis of which plausible value or a plausible range for the roll rate is determined.

The invention relates to a control method of an electrically-controlled tubular column, and relates to the technical field of vehicle steering, and the control method comprises the steps that the rolling direction of a target roller in a steering wheel and the rolling rate within preset time can be determined firstly, the rolling rate is used for representing the rolling speed of the target roller, and the rolling speed of the target roller is determined; then, the adjusting type of the target roller and the adjusting direction corresponding to the rolling direction under the adjusting type can be determined, the target adjusting speed of the electric adjusting pipe column corresponding to the rolling speed is determined according to the preset corresponding relation between the rolling speed and the adjusting speed, and the rolling speed can be in positive correlation with the adjusting speed; and finally, according to the target adjusting speed, the adjusting motor is controlled to adjust the electrically-controlled pipe column according to the adjusting type and the adjusting direction, so that the corresponding adjusting speed of the electrically-controlled pipe column can be determined according to the rolling frequency of the target roller by the user, and when the user rapidly slides the roller, the user can conveniently adjust the adjusting speed of the electrically-controlled pipe column. According to the technical scheme, the electrically-controlled pipe column can be rapidly adjusted, when a user slides the roller at a low speed, the electrically-controlled pipe column can be adjusted at a low speed, and therefore the user requirement can be met, and the user experience feeling is improved.

The invention discloses a low-cost bicycle hardware device for self-balancing and steering control, and the device is characterized in that the device comprises a frame; the power source is installed on the bicycle frame and used for providing power for electric elements of the bicycle; the hub motor is mounted on a rear wheel of the frame, and the hub motor is used for providing power for advancing of the bicycle; the steering servo motor is mounted near a handle of the frame, and the steering servo motor is used for controlling the handle to steer; the inertial measurement unit is fixedly mounted at the position, close to the center of mass of the bicycle, of the bicycle frame and used for measuring the three-axis acceleration and the three-axis angular velocity of a bicycle body in real time; and the central calculation unit calculates the roll angle and the roll angle speed of the vehicle body based on the three-axis acceleration and the three-axis angular speed of the vehicle body, and generates a steering instruction and a speed instruction based on the roll angle and the roll angle speed of the vehicle body. The technical problem that in the prior art, a contradiction which is difficult to reconcile exists between a low-cost assembly and a high-performance control requirement is solved.