Patent ID: 11906475
Assignee: SHIMADZU CORPORATION
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A material testing machine comprising:
a load mechanism which applies a test force to a test target;
a measuring instrument which measures a physical quantity of the test target which changes according to the test force or the application of the test force; and
a control unit which performs a material test on the test target by controlling the test force, the physical quantity of the test target, or a physical quantity acting on the test target to reduce a difference between a predetermined target value and a value measured by the measuring instrument, wherein
the control unit
performs control input for the load mechanism via a low-pass filter,
determines, when setting of the low-pass filter is changed, an appropriate control gain based on a control gain within a range where a control system including the load mechanism and the low-pass filter is stable, and
controls an operation of the load mechanism by using the appropriate control gain.