Control type vibro-isolating support

Details Control type vibro-isolating support Control type vibro-isolating support

1996-03-27

1997-07-15

Williams, Hezron E.

Spring devices

Resilient shock or vibration absorber

Including energy absorbing means or feature

364508, F16F 1300

Patent

active

056475799

ABSTRACT:
A control type vibro-isolating support includes a pulse signal generator for generating reference signals x, which represent the state of the vibration being generated by an engine. An acceleration sensor detects residual vibration on the support member side, and generates a residual vibration signal e. A controller is supplied with the reference signals x and residual vibration signal e. On the basis of the reference signals x and residual vibration signal e and in accordance with, for example, synchronous filtered X LMS algorithm, the controller generates a drive signal y so as to lower the vibration level on the member side. An engine mount is interposed between the engine and the member, and has an electromagnetic actuator. The drive circuit for the actuator is supplied with the drive signal y. The controller judges that abnormality has occurred, if a maximum value of the residual vibration signal e exceeds a threshold, and if maximum values of the signal e have occurred at the same periodicity as the reference signals x.

REFERENCES:
patent: 4699348 (1987-10-01), Freudenberg
patent: 5219037 (1993-06-01), Smith et al.
patent: 5313407 (1994-05-01), Tiernan et al.
patent: 5418858 (1995-05-01), Shoureshi
patent: 5439204 (1995-08-01), Yamazoe et al.
patent: 5456341 (1995-10-01), Garnjost et al.

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