Seat suspension system using human body responses
First Claim
1. A seat suspension system for controlling force between a vehicle and a seat for holding a human body comprising, in combination:
- a movement sensor for sensing movement of said vehicle and providing a vehicle movement signal;
a controller for receiving said vehicle movement signal, said controller using a predetermined human body vibration response corresponding to said vehicle movement signal to responsively provide a control signal; and
an actuator, interconnected between said seat and said vehicle, for receiving said control signal and responsively controlling the force between said seat and said vehicle.
2 Assignments
0 Petitions
Accused Products
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.
65 Citations
8 Claims
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1. A seat suspension system for controlling force between a vehicle and a seat for holding a human body comprising, in combination:
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a movement sensor for sensing movement of said vehicle and providing a vehicle movement signal; a controller for receiving said vehicle movement signal, said controller using a predetermined human body vibration response corresponding to said vehicle movement signal to responsively provide a control signal; and an actuator, interconnected between said seat and said vehicle, for receiving said control signal and responsively controlling the force between said seat and said vehicle. - View Dependent Claims (2, 3, 4)
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5. A seat suspension system for controlling force between a vehicle and a seat for holding a human body comprising, in combination:
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a movement sensor for sensing movement of said human body in said seat and responsively providing a body movement signal; a movement sensor for sensing movement of said vehicle and providing a vehicle movement signal; a controller for receiving said human and vehicle movement signals and responsively providing a control signal; and an actuator, interconnected between said seat and said vehicle, for receiving said control signal and responsively controlling the force between said seat and said vehicle. - View Dependent Claims (6, 7, 8)
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Specification