A tunable vibration dampener includes a support including a first support wall and a second support wall spaced from the first support wall and a mass suspended between the first support wall and the second support wall. The mass has a first side surface and a second side surface. A first support system having a support member connects the first side surface and the first support wall and a second support system having a support element connects the second side surface and the second support wall. At least one of the support member and the support element is adjustable to establish a selected attenuation frequency for the tunable vibration dampener.

Embodiments related to systems and methods for controlling the relative amounts of rotation and heave motions applied to a seat by an active seat suspension system are described.

A seating system for a vehicle is disclosed. The seating system includes a support surface having a surface contour formed by first springs having fixed stiffness values, a frame, and second springs having adjustable stiffness values coupling the support surface and the frame. The first springs and the second springs together control motion of the support surface in relation to motion of the frame.

The invention relates to an adjustable damping system for a vehicle seat for damping a movement of the seat part-side upper part relative to the body-side lower part in at least one spatial direction, wherein, for damping, at least one damping element is provided, which is adjustable by an adjustment device and is arranged between the seat part-side upper part and the body-side lower part. The damping system is further distinguished in that a first damping force of the damping element is settable by the adjustment device, wherein this first damping force can be determined by the adjustment device, with the aid of a total damping travel of the damping element, a basic damping force presettable by a damping setting device, a position of the seat part-side upper part, measurable by a sensor device, relative to the body-side lower part and a movement direction of the seat part-side upper part relative to the body-side lower part, wherein the movement direction can be determined from at least two temporally consecutive positions of the seat part-side upper part, measurable by the sensor device, relative to the body-side lower part.

Disclosed are active vehicle seat assemblies, methods for making and using such seat assemblies, and vehicles with active seat assemblies for counteracting unwanted inertial forces. An active vehicle seat assembly is disclosed that includes an occupant chair with interconnected seat and backrest portions. A motion sensor detects motion of the occupant chair and outputs signals indicative thereof. An automated platform movably mounts the occupant chair to the vehicle body. The platform includes: a pitch plate that pivots about two lateral axes; a pitch actuator that selectively pivots the pitch plate; a roll plate that pivots about two longitudinal axes; and a roll actuator that selectively pivots the roll plate. An on-board controller responds to signals from the motion sensor indicative of inertial motion disturbances to the chair by transmitting control signals to the pitch and/or roll actuators to pivot the pitch and/or roll plates to thereby counteract the inertial disturbances.

A vehicle control device includes a vibration information detection device that detects information relating to vibration of a seat, a drowsiness detection device that detects a state related to drowsiness of an occupant in the seat, and a controller that controls an active suspension. The controller includes a processor. The processor determines, based on detection results from the drowsiness detection device, whether a specific occupant, who is an occupant that is not a driver during manual driving, is asleep or falling asleep. When determining that the specific occupant is asleep or falling asleep, and determining that the vibration of the seat is less than the predetermined value, the processor controls the active suspension such that the vibration of the seat is no less than the predetermined value.

Provided is a multi-dynamic platform including an upper support that can be integrally attached to a mobile element and defines an upper plane, a base support that can be fixed to the ground and defines a base plane, at least one intermediate support arranged between the base and upper supports, articulated quadrilaterals each including two lower hinges, connected to one of the base or intermediate supports, two upper hinges, connected to one of the intermediate or upper supports, two rods which connect the lower hinges to the upper hinges in a crossed manner, and motor means configured to move the articulated quadrilateral internally according to its single degree of freedom defining an axis of rotation, the articulated quadrilaterals being at least two in number and being substantially placed one on top of the other and defining reciprocally oblique axes of rotation.

Provided is an inertial platform including an upper support that can be integrally attached to a mobile element and defines an upper plane, a base support that can be fixed to the ground and defines a base plane, at least one intermediate support arranged between the base and upper supports, articulated quadrilaterals each including two lower hinges, connected to one of the base or intermediate supports, two upper hinges, connected to one of the intermediate or upper supports, two rods which connect the lower hinges to the upper hinges in a crossed manner, and motor means configured to move the articulated quadrilateral internally according to its single degree of freedom defining an axis of rotation, and each including sensing means to detect the position of the upper plane with respect to the gravitational gradient functionally connected to means of control of the platform and at least to the motor means.

Various seating arrangements for a vehicle are described. Generally, the vehicle includes an electromagnetic array featured on a floor of the vehicle. The chair includes base having a plurality of magnets featured thereon. The vehicle generates signals for the electromagnetic array to generate a wave and impart a force on the chair in a determined direction via the plurality of magnets.

A system and method that establishes a confidence in a vehicle position determined by a vehicle position determination system and uses the established confidence to change a behavior of an active suspension system of a plant in the vehicle.