Vibration control apparatus
First Claim
1. A vibration control apparatus for a vibrating body supported by a suspension and comprising actuator means for applying a control force to the suspension to control characteristics of the suspension and vibrations of the vibrating body, said apparatus further comprising:
- state detecting means comprising a first detecting means associated with the actuator means for detecting a physical value representative of the control force applied by the actuator means and a second detecting means associated with the suspension for detecting a state value representing actual movement of said suspension;
control means including target control force calculating means, detection control force calculating means, and difference calculating means, said target control force calculating means receiving the signals output by said first and second detecting means, for calculating a coefficient in response to optimal target control force in consideration of an external force or disturbance acting on said suspension on the basis of the physical and state values from said first and second detecting means respectively, said detection control force calculating means receiving the signals output from said first detecting means for calculating a coefficient in response to a detection control force corresponding to the physical value from said first detecting means, said difference calculating means being connected to said target control force calculating means and said detection control force calculating means for calculating a difference coefficient representative of a difference between the optimal target control force and the detection control force;
driving means connected to said control means for amplifying the difference coefficient signal output from said difference calculating means of said control means; and
said actuator means being connected to said driving means for variably continuously controlling the characteristics of the suspension on the basis of the amplified difference coefficient signal from said driving means, so that the suspension characteristics can be continuously variably controlled to equivalently generate the control force applied to the suspension in response to the external force or disturbance acting on said suspension,said second detecting means of said state detecting means comprising first sensor means for producing a signal representing the damping force of said suspension, said first detecting means comprising second sensor means for producing a signal representing relative vibratory velocity between a suspension member and said vibrating body, said actuator means comprising means for continuously and variably controlling a damping coefficient of the suspension.
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Accused Products
Abstract
A vibration control apparatus detects a physical value influencing characteristics of a suspension supporting a vibrating body and a state value representing movement of the suspension, calculates an optimal target control force in consideration of an external force or disturbance acting on the suspension on the basis of the physical and state values as outputs from a state detecting system, calculates the detection control force corresponding to the detected physical value, and continuously variably controls the suspension characteristics so as to generate a control force corresponding to the difference between the target and detection control forces in consideration of the external force or disturbance acting on the suspension, whereby vibrations are prevented by equivalently applying the target control force on the suspension.
75 Citations
14 Claims
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1. A vibration control apparatus for a vibrating body supported by a suspension and comprising actuator means for applying a control force to the suspension to control characteristics of the suspension and vibrations of the vibrating body, said apparatus further comprising:
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state detecting means comprising a first detecting means associated with the actuator means for detecting a physical value representative of the control force applied by the actuator means and a second detecting means associated with the suspension for detecting a state value representing actual movement of said suspension; control means including target control force calculating means, detection control force calculating means, and difference calculating means, said target control force calculating means receiving the signals output by said first and second detecting means, for calculating a coefficient in response to optimal target control force in consideration of an external force or disturbance acting on said suspension on the basis of the physical and state values from said first and second detecting means respectively, said detection control force calculating means receiving the signals output from said first detecting means for calculating a coefficient in response to a detection control force corresponding to the physical value from said first detecting means, said difference calculating means being connected to said target control force calculating means and said detection control force calculating means for calculating a difference coefficient representative of a difference between the optimal target control force and the detection control force; driving means connected to said control means for amplifying the difference coefficient signal output from said difference calculating means of said control means; and said actuator means being connected to said driving means for variably continuously controlling the characteristics of the suspension on the basis of the amplified difference coefficient signal from said driving means, so that the suspension characteristics can be continuously variably controlled to equivalently generate the control force applied to the suspension in response to the external force or disturbance acting on said suspension, said second detecting means of said state detecting means comprising first sensor means for producing a signal representing the damping force of said suspension, said first detecting means comprising second sensor means for producing a signal representing relative vibratory velocity between a suspension member and said vibrating body, said actuator means comprising means for continuously and variably controlling a damping coefficient of the suspension. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification