Seat suspension system using human body responses
US5536059A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 4, 1994 |
| Grant date | Jul 16, 1996 |
| Priority date | — |
| Expiry date | Nov 4, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60N2/506
- WIPO fieldTransport
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.