Suspension systems for recreational vehicles are disclosed. The suspension systems may include at least one adjustable member coupling a sway bar to respective suspensions. The suspension systems may include a torque actuator associated with a sway bar.

A suspension system and associated control methods for improving the effectiveness of driver assistance systems is disclosed where the driver assistance systems can generate and send requests to a suspension control unit (SCU) of the suspension system to actuate (e.g., close) one or more comfort valves in the suspension system to increase the roll stiffness and/or pitch stiffness of the suspension system when the driver assistance systems are taking corrective action. As part of a two-way communication between the suspension control unit (SCU) and the driver assistance systems, the suspension control unit (SCU) communicates target stiffnesses and/or calculated effective stiffnesses to the driver assistance systems, which is used to update the vehicle stability models used by the driver assistance systems.

In a vehicle, GV control and M+ control are executed by generating braking/driving forces from a brake hydraulic pressure control device and a drive device during steering. A controller estimates (calculates), by a posture estimation unit, a pitch amount and a roll amount (predicted pitch rate and predicted roll rate) that occur in the vehicle through use of a moment command of the M+ control and a longitudinal G command of the GV control. The controller adjusts damping forces of damping force variable dampers through use of the estimated pitch amount and the estimated roll amount (predicted pitch rate and predicted roll rate) so that a pitch amount calculated by a pitch control unit and a roll amount calculated by a roll suppression unit approach respective target values.

A vehicle roll control apparatus comprises a pair of left and right active suspensions for applying vertical forces in opposite phases to left and right wheels of a rear axle of the vehicle, and a controller for controlling the active suspensions. The controller increases control amounts of the active suspensions so as to increase roll stiffness of the rear axle in accordance with an increase in a lateral acceleration acting on the vehicle. When the lateral acceleration increases beyond the low acceleration range to the high acceleration range, the controller decreases the gain of the control amounts of the active suspensions with respect to the lateral acceleration in accordance with the increase in the lateral acceleration.

A vehicle control device includes a vertical VSE, a riding comfort control logic, a planar VSE, a steering stability control logic, a command limiting unit, a control command selection unit. The command limiting unit acquires specifications related to a traveling of a vehicle such as, for example, a slip rate and a four-wheel independent braking/driving force control flag through a CAN. The command limiting unit limits a variable range of a damping force generated by a suspension device provided between a vehicle body and wheels of the vehicle based on the specifications related to the traveling of the vehicle to obtain a first command value. The command limiting unit outputs the obtained first command value to the control command selection unit.

A control unit is configured to execute vibration suppression control, in which the control force generation device is controlled based on a target vibration suppression control force when a wheel passes through a predicted wheel passage position, and roll control, in which the control force generation device is controlled based on a target roll control force for reducing roll of the sprung portion based on a roll index value. When the vibration suppression control and the roll control are executed concurrently, the control force generation device is controlled based on the target vibration suppression control force and the target roll control force obtained after at least one of a reduction correction for the target vibration suppression control force and an increase correction for the target roll control force is performed.

A method for controlling vehicle motion is described. The method includes accessing a set of control signals including a measured vehicle speed value associated with a movement of a vehicle. A control signal associated with user-induced input is also accessed. The method compares the measured vehicle speed value with a predetermined vehicle speed threshold value to achieve a speed value threshold approach status, and then compares the set of values to achieve a user-induced input threshold value approach status. The method monitors a state of a valve within the vehicle suspension damper, and determines a control mode for the vehicle suspension damper. The method also regulates damping forces within the vehicle suspension damper.

The present disclosure provides a system for controlling cornering of a vehicle and a method thereof. The method of controlling cornering of a vehicle may include: determining whether a cornering control condition is satisfied based on a lateral acceleration; detecting a displacement of an accelerator pedal when the cornering control condition is satisfied; calculating a sport index based on the displacement of the accelerator pedal and a predetermined value; and setting operating modes of a power train and a suspension system based on at least one of the sport index or the lateral acceleration.

Provided are a vehicle control apparatus and a vehicle control method, a vehicle control apparatus including: a sensor configured to sense at least one of a vehicle speed value and a lateral acceleration value of a vehicle; an active camber device including a knuckle for supporting a wheel of the vehicle, an upper arm having one end rotatably connected to the knuckle to form a stroke node, and a actuator for rotationally shifting the stroke node of the upper arm with respect to a connection point with the knuckle in a vertical direction; and a controller configured to vary a position of the stoke node of the upper arm through the actuator on the basis of one of the sensed vehicle speed value and the sensed lateral acceleration value.

A road surface condition is determined appropriately. A road surface determining section (84) configured to determine a road surface condition with reference to a wheel speed signal indicative of wheel speeds includes a band-stop filter (841) which acts on the wheel speed signal and has a cutoff frequency band which is changed in accordance with the wheel speed signal.