Control type vibro-isolating support
First Claim
1. A control type vibro-isolating support, comprising:
- a source of control vibration which is interposed between a vibrator and a support body, and which can generate control vibration;
reference signal generation means for detecting the state of the vibration being generated by said vibrator, and for outputting a reference signal;
residual vibration detection means for detecting residual vibration on said support body side; and
for outputting a residual vibration signal;
control means for generating a drive signal for driving said source of control vibration on the basis of said reference signal and said residual vibration signal so as to damp the vibration on said support body side;
state detection means for detecting the state of said vibro-isolating support; and
abnormality judgment means for judging if there is abnormality on the basis of the detection result of said state detection means.
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Accused Products
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.
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Citations
20 Claims
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1. A control type vibro-isolating support, comprising:
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a source of control vibration which is interposed between a vibrator and a support body, and which can generate control vibration; reference signal generation means for detecting the state of the vibration being generated by said vibrator, and for outputting a reference signal; residual vibration detection means for detecting residual vibration on said support body side; and
for outputting a residual vibration signal;control means for generating a drive signal for driving said source of control vibration on the basis of said reference signal and said residual vibration signal so as to damp the vibration on said support body side; state detection means for detecting the state of said vibro-isolating support; and abnormality judgment means for judging if there is abnormality on the basis of the detection result of said state detection means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification