Conclusion
The test system is suitable to perform both the open-loop and closed-loop tests for the ceramic material even when system noise exists. However, when there is very little displacement to be measured, the noise becomes a problem. Based on the previous measurement and analysis of system noise, further improvement of the testing system can be made by increasing the system’s stiffness and fixing the whole system on a more solid foundation. These changes will subsequently suppress most of the mechanical noise. Another way to minimize the effect of electrical noise is to amplify the sampling signals. Furthermore, a high-precision filter and a well-designed compensator will be very useful for a closed-loop control system.
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Wu, F., Wang, M.L. Tension test for alumina ceramic materials using open-loop and closed-loop in-situ loading device. Exp Tech 21, 35–39 (1997). https://doi.org/10.1111/j.1747-1567.1997.tb00522.x
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DOI: https://doi.org/10.1111/j.1747-1567.1997.tb00522.x