Vibration isolator of vibration actively reducing apparatus
First Claim
1. An apparatus for actively reducing a vibration comprising:
- a) a vibration source;
b) a supporting base member on which the vibration source is supported;
c) a vibration isolator including a controlled vibration source and interposed between the vibration source and the supporting base member, the controlled vibration source being adapted for developing a controlled vibration to be interfered against a vibration developed from the vibration source at an interference position of the vibration isolator, the vibration isolator further including;
a predetermined rigidity member disposed on another position of the vibration isolator toward the supporting base member with respect to the interference position, the predetermined rigidity member being so arranged in the vibration isolator that all vibration forces transmitted from the vibration source toward the supporting base member are once concentrated thereonto;
a lid member, fixed onto the supporting base member and having a peripheral edge portion thereof coupled to a surface of the predetermined rigidity member which faces toward the supporting base member so as to provide a gap between a more inner portion of the lid member than the peripheral edge portion thereof and the surface of the predetermined rigidity member; and
a load sensor for detecting a residual vibration after the interference of the controlled vibration against the vibration developed from the vibration source and outputting the detected residual vibration in the form of a residual vibration signal, the load sensor having a pressure receiving surface thereof and which is so inserted between the predetermined rigidity member and the lid member so as to be located at an approximately center position of the gap and so as to receive the residual vibration from the predetermined rigidity member at its pressure receiving surface; and
d) a controller for developing and outputting a drive signal to drive the controlled vibration source to develop the controlled vibration on the basis of the residual vibration signal from the load sensor.
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Accused Products
Abstract
Described is a vibration isolator of a vibration actively reducing apparatus which achieves a more accurate detection of a residual vibration by means of a load sensor after an interference of a controlled vibration developed from a controlled vibration source constituting the vibration isolator against a vibration developed and transmitted from a vibration source such as a vehicular engine. In the vibration isolator, all vibration forces developed and transmitted from the vibration source are once concentrated onto a predetermined rigidity member such as a yoke of an electromagnetic actuator constituting the controlled vibration source and the load sensor is installed between the predetermined rigidity member and a lid member of the vibration isolator coupled to a supporting base member attached onto, for example, a vehicle body.
24 Citations
20 Claims
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1. An apparatus for actively reducing a vibration comprising:
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a) a vibration source; b) a supporting base member on which the vibration source is supported; c) a vibration isolator including a controlled vibration source and interposed between the vibration source and the supporting base member, the controlled vibration source being adapted for developing a controlled vibration to be interfered against a vibration developed from the vibration source at an interference position of the vibration isolator, the vibration isolator further including;
a predetermined rigidity member disposed on another position of the vibration isolator toward the supporting base member with respect to the interference position, the predetermined rigidity member being so arranged in the vibration isolator that all vibration forces transmitted from the vibration source toward the supporting base member are once concentrated thereonto;
a lid member, fixed onto the supporting base member and having a peripheral edge portion thereof coupled to a surface of the predetermined rigidity member which faces toward the supporting base member so as to provide a gap between a more inner portion of the lid member than the peripheral edge portion thereof and the surface of the predetermined rigidity member; and
a load sensor for detecting a residual vibration after the interference of the controlled vibration against the vibration developed from the vibration source and outputting the detected residual vibration in the form of a residual vibration signal, the load sensor having a pressure receiving surface thereof and which is so inserted between the predetermined rigidity member and the lid member so as to be located at an approximately center position of the gap and so as to receive the residual vibration from the predetermined rigidity member at its pressure receiving surface; andd) a controller for developing and outputting a drive signal to drive the controlled vibration source to develop the controlled vibration on the basis of the residual vibration signal from the load sensor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. An apparatus for actively reducing a vibration applicable to an automotive vehicle, comprising:
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a) a vehicular engine; b) a supporting base member on which the vehicular engine is supported, the supporting base member being attached onto a vehicle body; c) an engine mount including a controlled vibration source and which is interposed between the vehicular engine and the supporting base member, the controlled vibration source being adapted for developing a controlled vibration to be interfered against a vibration developed from the vehicular engine at an interference position of the engine mount, the engine mount further including;
a predetermined rigidity member disposed on another position of the engine mount toward the supporting base member with respect to the interference position, the predetermined rigidity member being so arranged in the engine mount that all vibration forces transmitted from the vehicular engine toward the supporting base member are once concentrated thereonto;
a lid member, fixed onto the supporting base member and having a peripheral edge portion thereof coupled to a surface of the predetermined rigidity member which faces toward the supporting base member so as to provide a gap between a more inner portion of the lid member than the peripheral edge portion thereof and the surface of the predetermined rigidity member; and
a load sensor for detecting a residual vibration after the interference of the controlled vibration against the vibration developed from the vehicular engine and outputting the detected residual vibration in the form of a residual vibration signal, the load sensor having a pressure receiving surface thereof and which is so inserted between the predetermined rigidity member and the lid member so as to be located at an approximately center position of the gap and so as to receive the residual vibration from the predetermined rigidity member at its pressure receiving surface; andd) a controller for developing and outputting a drive signal to drive the controlled vibration source to develop the controlled vibration on the basis of the residual vibration signal from the load sensor.
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20. An apparatus for actively reducing a vibration comprising:
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a) vibration developing means; b) a supporting base member on which the vibration developing means is supported; c) vibration isolating means including a controlled vibration developing means and interposed between the vibration developing means and the supporting base member, the controlled vibration developing means for developing a controlled vibration to be interfered against a vibration developed from the vibration developing means at an interference position of the vibration isolating means, the vibration isolating means further including;
a predetermined rigidity member disposed on another position of the vibration isolating means toward the supporting base member with respect to the interference position, the predetermined rigidity member being so arranged in the vibration isolating means that all vibration forces transmitted from the vibration developing means toward the supporting base member are once concentrated thereonto;
a lid member, fixed onto the supporting base member and having a peripheral edge portion thereof coupled to a surface of the predetermined rigidity member which faces toward the supporting base member so as to provide a gap between a more inner portion of the lid member than the peripheral edge portion thereof and the surface of the predetermined rigidity member; and
residual vibration detecting means for detecting a residual vibration after the interference of the controlled vibration against the vibration developed from the vibration developing means and outputting the detected residual vibration in the form of a residual vibration signal, the residual vibration detecting means comprising a load sensor having a pressure receiving surface thereof and which is so inserted between the predetermined rigidity member and the lid member so as to be located at an approximately center position of the gap and so as to receive the residual vibration from the predetermined rigidity member at its pressure receiving surface; andd) controlling means for developing and outputting a drive signal to drive the controlled vibration developing means to develop the controlled vibration on the basis of the residual vibration signal from the load sensor.
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Specification