A suspension system includes a leaf spring, an actuator attached to the leaf spring, and an axle mount attached to the actuator. The actuator is disposed vertically between the leaf spring and the axle mount and is actuatable to change a distance between the leaf spring and the axle mount.

A lock mechanism is provided in an actuator capable of changing a toe angle of a wheel by rotational drive of a motor and adapted to lock operation of the actuator when the rotational drive of the motor is stopped. The lock mechanism includes a casing secured to a housing of the actuator, an input-side shaft connected to a motor shaft of the motor and rotatably held in the casing, an output-side shaft to which rotational torque is transmitted from the input-side shaft, and an engaging part. The engaging part includes a pair of friction members displaceably provided along a guide groove, a claw part having an acute shape in cross section and a side end part which are provided on the input-side shaft, an abutting part provided on each friction member, and a coil spring for urging each friction member.

A mechanically actuated level control valve device for a commercial vehicle with an air suspension system is a level control valve and comprises a drive element that can be mechanically coupled to a vehicle wheel or axle. A valve element and a counter valve element have a first relative position, wherein the port for the air suspension bellow is closed, a second relative position, wherein the port for the air suspension bellow is connected to the port for the aeration device, and a third relative position, wherein the port for the air suspension bellow is connected to the port for the deaeration device. The valve element is coupled to a rotatable driveshaft of the level control valve by a drive mechanism. An integrated actuator changes the relative position of the valve element and the drive element or the relative position of the counter valve element and a valve housing.

The disclosure provides an electric quad vehicle, a control system, and method of operation. The electric quad vehicle may include a central hub and four legs, each pivotably mounted to the central hub, each leg including an electric motor rotatably coupled to a wheel. Each leg may include a joint allowing the leg to bend to a retracted state with the wheel adjacent the central hub. The electric quad vehicle may include handle bars extending from the central hub including rider controls of acceleration and steering. The electric quad vehicle may include a control system configured to translate rider input to the rider controls into control signals for each of the electric motors.

A vehicle controller includes a pendulum mechanism arranged between an under body and an upper body of a vehicle to allow an oscillation of the upper body relative to the under body, a vehicle height adjuster allowing the under body to incline, and an inclination controller controlling an operation of the vehicle height adjuster to cause the under body to incline in a direction where the upper body inclines while oscillating around a support point that is defined by the pendulum mechanism.

A control system (300) for controlling an active suspension system (104) of a vehicle (100), the active suspension system comprising suspension actuators (502), the control system comprising one or more controller (301), wherein the control system is configured to: in dependence on an activation signal (904), provide (908) a control signal to the active suspension system to cause the suspension actuators of the active suspension system to repetitively pulse vertical force through wheels (FR, FL, RR, RL) of the vehicle in a controlled pattern determined by the one or more controller, to vary wheel-to-surface contact patch forces, wherein the pattern comprises repetitively pulsing vertical force through at least one of the wheels at a first phase and through at least one other of the wheels at a second phase.

A roll vibration damping control system includes an electronic control unit configured to: compute a sum of a product of a roll moment of inertia and a roll angular acceleration of a vehicle body, a product of a roll damping coefficient and a first-order integral of the roll angular acceleration, and a product of an equivalent roll stiffness of the vehicle and a second-order integral of the roll angular acceleration, as a controlled roll moment to be applied to the vehicle body; compute a roll moment around a center of gravity of a sprung mass as a correction roll moment, the roll moment being generated by lateral force on wheels due to roll motion; and compute a target roll moment based on a value obtained by correcting the controlled roll moment with the correction roll moment.

A telehandler comprising: a chassis; an axle supporting the chassis; a pivotal connection between the axle and the chassis; and a chassis positioning system. The pivotal connection is configured to enable rotation of the chassis relative to the axle for varying a chassis-axle tilt angle defined between a longitudinal axis of the axle and the chassis. The chassis positioning system comprises: a chassis angle sensor configured to measure an angular position of the chassis relative to gravity; an actuator configured to rotate the chassis relative to the axle at the pivotal connection; and a control system configured, in a first mode, to control the actuator to thereby control the chassis-axle tilt angle based on the measured angular position of the chassis.

A roll vibration damping control system includes an electronic control unit configured to: compute a sum of a product of a roll moment of inertia and a roll angular acceleration of a vehicle body, a product of a roll damping coefficient and a first-order integral of the roll angular acceleration, and a product of an equivalent roll stiffness of the vehicle and a second-order integral of the roll angular acceleration, as a controlled roll moment to be applied to the vehicle body; compute a roll moment around a center of gravity of a sprung mass as a correction roll moment, the roll moment being generated by lateral force on wheels due to roll motion; and compute a target roll moment based on a value obtained by correcting the controlled roll moment with the correction roll moment.

A control system (300) for controlling an active suspension system (104) of a vehicle (100), the control system comprising one or more controller (301), wherein the control system is configured to: determine (804) that an entry condition is satisfied; in dependence on satisfaction of the entry condition, transmit (806) a request to the active suspension system to create clearance beneath a first wheel (FL, RR) of the vehicle but not create clearance beneath a plurality of other wheels (FR, RL) of the vehicle.