Land vehicle provided with a frame; four wheels; and four compensation systems each associated with a respective wheel. The vehicle is also provided with a control unit, in particular a hydraulic control unit, which has compensation systems and connects each wheel to the other wheels. The vehicle has a plurality of hydraulic filters, which are each arranged between a wheel and the respective compensation system; the hydraulic filters are low-pass filters designed to reduce (in particular stop), in case of undesired frequencies, the flow of a transmission fluid and, hence, the association between the wheel and the respective compensation system.

A vehicle attitude control apparatus is provided in which an active suspension device of each wheel has a mass body arranged between a sprung mass and an unsprung mass of a vehicle, and upper and lower actuators each configured to generate an actively generated force acting on the sprung and unsprung masses, respectively, by applying urging forces to the masses, and a control unit calculates a target braking/driving force of each braking/driving device for achieving target motion state quantities of the vehicle, target actively generated forces of the upper and lower actuators, and controls a braking/driving device and the upper and lower actuators, so that the target braking/driving force and the target actively generated forces of the upper and lower actuators are achieved.

A method of controlling a vehicle when the vehicle passes over a speed bump, may include: dividing sections of the road into a first section within a first time period before the front wheel of the vehicle collides with the speed bump, a second section while the front wheel collides with the speed bump, a third section within a second time period before the rear wheel collides with the speed bump, and a fourth section while the rear wheel collides with the speed bump; and controlling and distributing at least one of suspension damping force, driving power and braking force to the front wheel and the rear wheel for each of the first section, the second section, the third section and the fourth section to reduce the amount of impact to be applied when the vehicle collides with the speed bump and to reduce a vertical motion of the vehicle that occurs while the vehicle goes over the speed bump.

The four wheel steering vehicle utilizes a cage system that extends along the longitudinal axis to protect the driver coupled to a center rail chassis. Front and Back independent suspension links extend outward along the lateral axis pivotally connected to the wheel assemblies enabling four wheel independent suspension. A centrally located pivoting shock provides both steering control and suspension attachment for the shock and spring. The vehicle is controlled by the driver using a steering wheel, acceleration pedal, and a brake pedal. The invention provides a feeling of integration with the vehicle as the driver rolls into turns with the vehicle, while minimizing fatigue caused by the continuous resistance to centrifugal cornering forces.

An embodiment composite material spring for a suspension device of a vehicle includes a leaf spring configured to be installed in a body of the vehicle and a wheel of the vehicle, a first fluid container installed at a left side of a center of the leaf spring and including a first magnetorheological fluid, and a second fluid container installed at a right side of the center of the leaf spring and including a second magnetorheological fluid.

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 invention relates to a method for determining a parameter indicative of a road capability of a road segment (18) supporting a vehicle (10). The vehicle (10) comprises a plurality of ground engaging members (12, 14, 16, 38, 40, 42). The method comprises: —for each ground engaging member (14, 42) in a sub-set of the plurality of ground engaging members (12, 14, 16, 38, 40, 42), setting a contact force (N.sub.14,S, N.sub.42,S) between the ground engaging member (12, 14, 16, 38, 40, 42) and the road segment (18); —determining a target global load vector (G) to be imparted to the vehicle (10), the target global load vector (G) comprising at least a vertical load and an inclining moment, —determining contact forces (N.sub.12, N.sub.16, N.sub.38, N.sub.40) for the ground engaging members (12, 16, 38, 40) of the plurality of ground engaging members (12, 14, 16, 38, 40, 42) which are not in the sub-set such that the contact forces (N.sub.12, N.sub.14,S, N.sub.16, N.sub.38, N.sub.40, N.sub.42,S) for the plurality of ground engaging members (12, 14, 16, 38, 40, 42) together result in a resulting global load vector (R), a difference measure (DM) between the resulting global load vector (R) and the target global load vector (G) being equal to or lower than a predetermined difference measure threshold, —applying the contact force (N.sub.12, N.sub.14,S, N.sub.16, N.sub.38, N.sub.40, N.sub.42,S) to each ground engaging member of the plurality of ground engaging members (12, 14, 16, 38, 40, 42), —for at least one ground engaging member (14, 42) in the sub-set, determining a parameter indicative of the road capability of the road segment (18) associated with the ground engaging member (14, 42).

A boom lift includes a base having a first end and an opposing second end, a turntable coupled to the base, a boom coupled to the turntable, an assembly pivotably coupled to the first end of the base, and a first actuator coupled to the first end of the base and the assembly. The assembly includes a tractive element. The assembly extends from the base such that the tractive element is longitudinally offset from and spaced forward of the first end and the opposing second end of the base.

An inertial regulation active suspension system based on posture deviation of a vehicle and a control method thereof are provided. The system comprises a vehicle body, an inertial measurement unit, an electronic control unit, a servo controller group, a plurality of wheels, suspension servo actuating cylinders respectively corresponding to the wheels, and displacement sensors for measuring a stroke of the suspension servo actuating cylinders. The electronic control unit reads posture parameters of the vehicle body measured by the inertial measurement unit, and calculates a deviation between the postures of the vehicle body at a current moment and at a previous moment, and then outputs posture control parameters to the servo controller group. The servo controller group controls extension and retraction of each of the suspension servo actuating cylinders according to the posture control parameters and displacement feedback values of the displacement sensors.

A carrier platform with a suspension mechanism and suspension methods for supporting a vibration-sensitive load including humans and sensitive objects or cargo in a vehicle such as a terrestrial vehicle, a marine vehicle or aircraft. The suspension mechanism deploys a set of linkage elements for accommodating linear motion of the carrier platform in a vertical linear degree of freedom (Z-axis) and in two horizontal linear degrees of freedom (X- and Y-axes). The suspension mechanism uses springs attached to the carrier platform for biasing it along the vertical linear degree of freedom. The suspension mechanism also has an active damping device with a set of motors to dampen vibrations experienced by the carrier platform in at least one translational degree of freedom.