Relationship between Test Methods in GB/T 228.1-2010 and Closed-loop Control of Test Machines

The control model of closed-loop controlled testing machines was described and the realization of the control modes of method A and method B in GB/T 228.1-2010 on the test machine was analyzed. The key points should be paid attention to were introduced when changing the control channel during the loading process for method A and method B. Relationship between the setting range of loading rate and the speed control accuracy of testing machine was expounded.