Vibration control system
First Claim
1. A vibration compensation system for actively attenuating the vibration of a machine, said machine having a housing, a linear dimension, and at least one body moving within the housing with a velocity component parallel to the linear dimension, said compensation system comprising:
- a countermass capable of being linearly reciprocated relative to the housing in a direction parallel to the linear dimension;
a motor, coupled to the housing, for driving the countermass in a direction parallel to the linear dimension;
means for sensing the position, or any time derivative or time integral thereof, along the linear dimension relative to the housing of the moving body, said means producing a signal output;
means for sensing the position, or any time derivative or time integral thereof, along the linear dimension relative to the housing of the countermass, said means producing a signal output; and
control means for supplying power to the motor in response to the signal outputs from all of the sensing means in a way that causes the acceleration along the linear dimension relative to the housing of the countermass to be in a direction opposite the acceleration along the linear dimension relative to the housing of the moving body, the magnitude of the acceleration along the linear dimension relative to the housing of the countermass being controlled to be equal to the product of the acceleration along the linear dimension relative to the housing of the moving body multiplied by its mass divided by the mass of the countermass.
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Accused Products
Abstract
A vibration compensation system for actively attenuating the vibration of a machine. The machine has a housing, with respect to which vibration is to be damped, and at least one body moving within the housing. The vibration compensation system includes a countermass capable of being linearly reciprocated relative to the housing in a direction parallel to the motion of the moving body within the machine. A motor, coupled to the housing, drives the countermass. Elements are provided for sensing the position, or any time derivative or time integral thereof, relative to the housing of the moving body and the countermass. control elements supply power to the motor in response to the signal outputs from all of the sensors so that the acceleration of the countermass is in a direction opposite the acceleration of the moving body. The magnitude of the acceleration of the countermass is equal to the product of the acceleration of the moving body multiplied by its mass divided by the mass of the countermass.
68 Citations
9 Claims
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1. A vibration compensation system for actively attenuating the vibration of a machine, said machine having a housing, a linear dimension, and at least one body moving within the housing with a velocity component parallel to the linear dimension, said compensation system comprising:
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a countermass capable of being linearly reciprocated relative to the housing in a direction parallel to the linear dimension; a motor, coupled to the housing, for driving the countermass in a direction parallel to the linear dimension; means for sensing the position, or any time derivative or time integral thereof, along the linear dimension relative to the housing of the moving body, said means producing a signal output; means for sensing the position, or any time derivative or time integral thereof, along the linear dimension relative to the housing of the countermass, said means producing a signal output; and control means for supplying power to the motor in response to the signal outputs from all of the sensing means in a way that causes the acceleration along the linear dimension relative to the housing of the countermass to be in a direction opposite the acceleration along the linear dimension relative to the housing of the moving body, the magnitude of the acceleration along the linear dimension relative to the housing of the countermass being controlled to be equal to the product of the acceleration along the linear dimension relative to the housing of the moving body multiplied by its mass divided by the mass of the countermass.
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2. A vibration compensation system for actively attenuating the vibration of a machine, said machine having a housing, an axis, and at least one body moving within the housing with a velocity component parallel to the axis, saide axis;
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means for sensing the axial position, or any time derivative or time integral thereof, relative to the housing of the moving body, said means producing a signal output; means for sensing the axial position, or any time derivative or time integral thereof, relative to the housing of the countermass, said means producing a signal output; and control means for supplying power to the motor in response to the signal outputs from all of the sensing means in a way that causes the axial acceleration relative to the housing of the countermass to be in a direction opposite the axial acceleration relative to the housing of the moving body, the magnitude of the axial acceleration relative to the housing of the countermass being controlled to be equal to the product of the axial acceleration relative to the housing of the moving body multiplied by its mass divided by the mass of the countermass. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9)
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Specification