MATERIAL TESTING MACHINE AND METHOD OF CONTROLLING MATERIAL TESTING MACHINE
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United States of America
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Feb 3, 2022
app pub date -
Jun 10, 2019
filing date -
Jun 10, 2019
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Abstract
Provided is a material testing machine (1) including: a load mechanism (12) that applies a load to a test object; a load measurement device that measures the load applied to the test object; and a control device (30) that performs a feedback control for the load mechanism (12) based on a deviation between a measurement value of the load and a target value of the load, in which a change in a physical quantity generated in the test object due to the load is measured, and the control device (30) includes a hunting detection unit (66) that detects hunting by comparing a frequency spectrum obtained by converting time-series data of the measurement value with a frequency spectrum obtained by converting the time-series data of the target value.
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