Apparatus and method for providing an inertial velocity signal in an active suspension control system
US6026339A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 12, 1997 |
| Grant date | Feb 15, 2000 |
| Priority date | — |
| Expiry date | Jun 12, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60G2400/252
- WIPO fieldTransport
- WIPO sectorMechanical engineering
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).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.