Seat suspension system using human body responses

Details Seat suspension system using human body responses Seat suspension system using human body responses

1994-11-04

1996-07-16

Pike, Andrew C.

Land vehicles: bodies and tops

Bodies

Seats with body modifications

188299, 248550, 248566, 267131, 280707, B60N 252

Patent

active

055360599

ABSTRACT:
An active seat suspension system for equipment that transfers vibration to a human operator provides human body vibration control and, thus, a more comfortable environment for the operator. The system utilizes a "man in a loop" control strategy, where both the equipment and human operator model are analyzed as a dynamic system. The seat suspension parameters are evaluated through optimization, which assumes, under normal stochastic conditions, that the vibratory inputs to the system are unknown. A controller estimates their values in real time, and a preferred characteristic force between the seat and machinery is determined. The characteristic force determined minimizes a cost function. Using an output from the controller, an actuator (which may be either active or semi-active) substantially applies the characteristic force between the seat and machinery, resulting in reduced vibration being transmitted to the human operator.

REFERENCES:
patent: 5358305 (1994-10-01), Kaneko et al.

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