Active mounts
First Claim
1. An active mount system comprising:
- a resilient mount for supporting a load in compression from a rotary machine supporting base to a supporting structure;
sensing means for sensing a level of vibrational force transmitted from said load through said resilient mount;
a means for generating a sinusoidal reference signal in synchronization with the rotary machine;
control signalling means for transmitting a signal in response to the level of vibrational force sensed by said sensing means; and
force transducing means for providing a force to attenuate said vibrational force transmitted through said resilient mount in response to said signal from said control signalling means;
wherein said force transducing means includes an electromagnetic device in parallel with said resilient mount;
wherein said control signalling means includes a least mean square adaptive filter receiving a reference input from said reference signal generating means and receiving an error signal from said sensing means and generates a corrective signal to said force transducing means.
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Accused Products
Abstract
The present invention relates to an active mount system in which a vibration sensor such as a force gauge or an accelerometer senses vibrational forces transmitted through a resilient mount by a load such as a machine. The invention further includes a digital narrow-band least mean square filter that receives a sinusoid synchronous with the rotating machinery and an error signal from the load cell and generates a corrective signal to be amplified and transmitted to the electromagnet which supplies an attenuating force to the resilient mount in response to the signal. As an alternative, a wide frequency range control can be realized by the use of a wide frequency range, high gain amplifier and multi-filter phase compensation circuitry to generate the corrective force signal which is amplified and transmitted to the electromagnet.
47 Citations
12 Claims
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1. An active mount system comprising:
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a resilient mount for supporting a load in compression from a rotary machine supporting base to a supporting structure; sensing means for sensing a level of vibrational force transmitted from said load through said resilient mount; a means for generating a sinusoidal reference signal in synchronization with the rotary machine; control signalling means for transmitting a signal in response to the level of vibrational force sensed by said sensing means; and force transducing means for providing a force to attenuate said vibrational force transmitted through said resilient mount in response to said signal from said control signalling means; wherein said force transducing means includes an electromagnetic device in parallel with said resilient mount; wherein said control signalling means includes a least mean square adaptive filter receiving a reference input from said reference signal generating means and receiving an error signal from said sensing means and generates a corrective signal to said force transducing means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An active mount system comprising:
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a resilient mount for supporting a load in compression from a rotary machine supporting base to a supporting structure; sensing means for sensing a level of vibrational force transmitted from said load through said resilient mount; control signalling means for transmitting a signal in response to the level of vibrational force sensed by said sensing means; and force transducing means for providing a force to attenuate said vibrational force transmitted through said resilient mount in response to said signal from said control signalling means; wherein said force transducing means includes an electromagnetic device in parallel with said resilient mount; force transducing means for providing a force to attenuate said vibrational force transmitted through said resilient mount in response to said signal from said control signalling means;
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Specification