EP0103188A2
Expired / Lapsed
EP
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Improved shock and vibration isolation system
Assignee: Eaton Optimetrix Inc
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Filing: 1980-09-26
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Granted: —
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Expires: 2000-09-26
Abstract
Abstract A shock and vibration isolation system having a plurality of isolators supporting a utilization device is disclosed. Each isolator has two gas driven pistons, pivotally mounted in a frame and is connected to an accumulator/controller that supplies controlled amounts of pressurized gas. A sensor in each isolator senses the position of the utilization device with respect to a base sitting on the ground, and the accumulator/controller adds gas to or exhausts gas from the pistons to counteract changes in position detected by the sensor. An electric control circuit is connected between the sensor and the accumulator/controller to supply a properly compensated signal from the sensor to control the accumulator/controller.
Inventors
- 👤 Edward H. Phillips
- 👤 Lawrence A. Wise
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 14:55
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/70; G03F7/70691; F; F16; F16F; F16F15/00; F16F15/02; F16F15/023; F16F15/027; F16F15/0275; F16M; F16M7/00; G03F7/708; G03F7/70858; G03F7/709; G12; G12B; G12B5/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
338 words
Vibrator isolation system for supporting a mass (L), the system including first feedback control loop means comprising gas-filled support means (T) having a gas accumulator means (Cl,C2) and being coupled to the mass for applying a supporting force to the mass and for changing the supporting force applied to the mass in response to changes in the pressure of.a gas in the gas accumulator means, valve means (R1,R2) connected to the gas accumulator means for admitting pressurized gas to and exhausting gas from the gas accumulator means, mass position sensing means (52) for sensing the position of the mass and for producing a signal indicative of the position of the mass, and mass position feedback control means (150) having an input and an output with the input being connected to receive the signal from the mass position sensing means, and the system being characterized by second feedback control loop means coupled to the valve means and the output of the mass position feedback control means, the second feedback control loop means comprising valve actuating means(126) having a control input and being connected to the valve means for controlling the position of the valve means in response to a signal applied to the control input, the valve actuating means having an integrating characteristic with respect to the signal applied to the control input; valve position sensing means (132) connected to the valve means for sensing the position of the valve means and producing a valve position signal indicative thereof; and valve position feedback control means (152,154) having a reference input, a control input, and an output, the reference input being connected to the output of the mass position feedback control means, the control input being connected to receive the valve position signal from the valve position sensing means, and the output being connected to the control input of the valve actuating means; wherein the second feedback control loop means is a position feedback control loop having a bandwidth greater than the bandwidth of the first feedback control loop means.
Claim 2
Dependent Claim
338 words
Vibrator isolation system for supporting a mass (L), the system including first feedback control loop means comprising gas-filled support means (T) having a gas accumulator means (Cl,C2) and being coupled to the mass for applying a supporting force to the mass and for changing the supporting force applied to the mass in response to changes in the pressure of.a gas in the gas accumulator means, valve means (R1,R2) connected to the gas accumulator means for admitting pressurized gas to and exhausting gas from the gas accumulator means, mass position sensing means (52) for sensing the position of the mass and for producing a signal indicative of the position of the mass, and mass position feedback control means (150) having an input and an output with the input being connected to receive the signal from the mass position sensing means, and the system being characterized by second feedback control loop means coupled to the valve means and the output of the mass position feedback control means, the second feedback control loop means comprising valve actuating means(126) having a control input and being connected to the valve means for controlling the position of the valve means in response to a signal applied to the control input, the valve actuating means having an integrating characteristic with respect to the signal applied to the control input; valve position sensing means (132) connected to the valve means for sensing the position of the valve means and producing a valve position signal indicative thereof; and valve position feedback control means (152,154) having a reference input, a control input, and an output, the reference input being connected to the output of the mass position feedback control means, the control input being connected to receive the valve position signal from the valve position sensing means, and the output being connected to the control input of the valve actuating means; wherein the second feedback control loop means is a position feedback control loop having a bandwidth greater than the bandwidth of the first feedback control loop means.
Claim 3
Dependent Claim
34 words
System as claimed in claim 1, characterized in that the bandwidth of the second feedback control loop means is at least twenty times greater than the bandwidth of the first feedback control loop means.
Claim 4
Dependent Claim
29 words
System as claimed in claim 1 or 2, character- ized in that the valve actuating means is an electric motor; and the valve position sensing means is a potentiometer.
Claim 5
Dependent Claim
25 words
System as claimed in any of claims 1 to 3, characterized in that the valve position feedback control means includes a lead network (190, 192).
Claim 6
Dependent Claim
24 words
System as claimed in any of claims 1 to 4, characterized in that the mass position feedback control means includes an integrating network (182).
Claim 7
Dependent Claim
28 words
System as claimed in any of claims 1 to 5, characterized in that the mass position feedback control means includes an amplifier having a lead-lag feedback network (174).
References Cited (Backward Citations)
No citation records indexed.
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