Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Vehicle subsystem or accessory control
Patent
1997-06-12
2000-02-15
Nguyen, Tan
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
Vehicle subsystem or accessory control
701 39, 180 8912, 280 5515, B62D 2404
Patent
active
060263393
ABSTRACT:
An apparatus (10) and a method provide a signal (12) indicative of velocity of a mass (18). An acceleration sensor (64) senses acceleration of the mass (18) and provides an acceleration signal (66) indicative of the acceleration of the mass. A displacement sensor (70) senses displacement of the mass (18) and provides for a displacement signal (72) indicative of displacement of the mass. Two filters (68 and 74) operate upon the acceleration and displacement signals (66 and 72) respectively, and the filter outputs are summed to provide the velocity signal (12). In one example, an active suspension system (16) utilizes the velocity signal (12) to control relative movement between the mass (18), as a sprung mass, and an unsprung mass (20). The suspension system (16) includes a controller (54), which receives the velocity signal (12) and provides a control signal (56) utilizing the velocity signal. A force actuator (30), between the sprung and unsprung masses (18 and 20), is controlled in response to the control signal (56).
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Nguyen Tan
TRW Inc.
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