TEST SYSTEM HAVING A COMPLIANT ACTUATOR ASSEMBLY AND ITERATIVELY OBTAINED DRIVE
First Claim
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1. A test system comprising:
- a physical test rig having a compliant actuator assembly responsive to a drive signal and a test specimen operably connected to the compliant actuator assembly;
a non-transitory computer storage device;
a processor operable with the storage device and configured to execute instructions stored on the non-transitory computer storage device that when executed(a) apply a test drive signal to the physical test rig;
(b) obtain an actual response signal of the physical test rig and the test specimen to the test drive signal;
(c) calculate an error as a function of the actual response signal and a selected response signal;
if the error exceeds a selected threshold;
(d) obtain a new drive signal based on the error and a relaxation gain factor; and
(e) repeating steps (a) through (d) wherein the test drive signal is the new drive signal until the error reaches the selected threshold.
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Abstract
A test system and a method includes applying a test drive signal to a physical test rig having a compliant actuator assembly for imparting loads to a test specimen. An actual response signal of the physical test rig and the test specimen to the test drive signal is obtained and an error as a function of the actual response signal and a selected response signal is calculated. If the error has not reached a selected threshold a new drive signal based on the error and a relaxation gain factor is obtained. The new drive signal is obtained and applied until the error reaches the selected threshold.
36 Citations
21 Claims
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1. A test system comprising:
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a physical test rig having a compliant actuator assembly responsive to a drive signal and a test specimen operably connected to the compliant actuator assembly; a non-transitory computer storage device; a processor operable with the storage device and configured to execute instructions stored on the non-transitory computer storage device that when executed (a) apply a test drive signal to the physical test rig; (b) obtain an actual response signal of the physical test rig and the test specimen to the test drive signal; (c) calculate an error as a function of the actual response signal and a selected response signal; if the error exceeds a selected threshold; (d) obtain a new drive signal based on the error and a relaxation gain factor; and (e) repeating steps (a) through (d) wherein the test drive signal is the new drive signal until the error reaches the selected threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method of controlling a test system responsive to a drive signal to produce a selected response signal, the test system comprising a physical test rig having compliance for loads applied to a test specimen, the method comprising:
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(a) applying a test drive signal to the physical test rig; (b) obtaining an actual response signal of the test system to the test drive signal; (c) calculating with a processor an error as a function of the actual response signal and a selected response signal; if the error has not reached a selected threshold; (d) obtaining a new drive signal based on the error and a relaxation gain factor; and (e) repeating steps (a) through (d) wherein the test drive signal is the new drive signal until the error is reaches the selected threshold. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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Specification