Active seat suspension with high frequency input cancellation
AssigneeClearMotion Acquisition I LLC
InventorsJack A. EKCHIAN, Pankaj CHOPRA, Ari GORDIN
Life of this patent
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Abstract
Embodiments related to the operation of an active seat suspension using prefiltered road data are described. In one embodiment, the prefiltered road data may be filtered to exclude road and/or driving inputs with low frequencies, or long length scales, such as hills, curves Such an embodiment may at least partially reduce operation of an active seat suspension in response to these low frequency long length scale of inputs where displacements of the vehicle may be greater than a range of motion of the active seat suspension while still permitting the active seat suspension to respond to higher frequency inputs.
Claims22
A method of controlling an active seat suspension in a vehicle, the method comprising:
- selecting prefiltered road data located along a path of travel of the vehicle;
- sensing accelerations applied to the vehicle in one or more directions as the
- vehicle travels along a road surface;
- and
- controlling operation of the active seat suspension based at least partly on the sensed accelerations and the prefiltered road data located along the path of travel of the vehicle.
An active seat suspension comprising:
- one or more sensors configured to sense accelerations applied to the vehicle in one or more directions;
- one or more actuators that control operation of the active seat suspension in one or more directions;
- and
- a controller of the active seat suspension system operatively coupled to the one or more sensors and the one or more actuators, wherein the controller is configured to control the one or more actuators to operate the active seat suspension based at least partly on the sensed accelerations and prefiltered road data located along a path of travel of the vehicle.
Dependencies are inferred from the claim text.