Noise reduction for strain-controlled testing
AssigneeRolls-Royce High Temperature Composites Inc.
InventorAustin Warmuth
Life of this patent
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Abstract
A system includes a load actuator, a strain measurement device, and a computing device. The computing device is configured to receive an unconditioned displacement signal from the strain measurement device. The unconditioned displacement signal represents displacement of a specimen under load from the load actuator. The computing device is further configured to separate the unconditioned displacement signal into a measurement signal and a control signal. The computing device is further configured to filter the control signal to generate a filtered control signal and control the load actuator based on the filtered control signal. The computing device is further configured to determine a strain on the specimen based on the measurement signal.
Claims20
A system, comprising:
- a load actuator;
- a strain measurement device;
- a computing device configured to:
- receive an unconditioned displacement signal from the strain measurement device, wherein the unconditioned displacement signal represents displacement of a specimen under load from the load actuator;
- separate the unconditioned displacement signal into a measurement signal and a control signal;
- filter the control signal to generate a filtered control signal;
- control the load actuator based on the filtered control signal;
- and
- determine a strain on the specimen based on the measurement signal.
A method, comprising:
- receiving, by a computing device, an unconditioned displacement signal from a strain measurement device, wherein the unconditioned displacement signal represents displacement of a specimen under load from a load actuator;
- separating, by the computing device, the unconditioned displacement signal into a measurement signal and a control signal;
- filtering, by the computing device, the control signal to generate a filtered control signal;
- controlling, by the computing device, the load actuator based on the filtered control signal;
- and
- determining, by the computing device, a strain on the specimen based on the measurement signal.
A non-transitory computer-readable storage medium comprising instructions that, when executed, cause at least one processor of a computing device to:
- receive an unconditioned displacement signal from a strain measurement device, wherein the unconditioned displacement signal represents displacement of a specimen under load from a load actuator;
- separate the unconditioned displacement signal into a measurement signal and a control signal;
- filter the control signal to generate a filtered control signal;
- control the load actuator based on the filtered control signal;
- and
- determine a strain on the specimen based on the measurement signal.
Dependencies are inferred from the claim text.