Detailed introduction to the three-closed loop electronic universal test machine

Three closed loopsUniversal testing machineIt has the characteristics of a conventional electronic universal test machine with a wide speed range, a large test stroke and flexible configuration, and has the advantages of force, displacement and deformation control of electro-hydraulic servo test machine. Therefore, it is a test machine with better performance, but because the machine stability during force control and deformation control is closely related to the rigidity of the host and the rigidity of the sample. Generally, the tonnage of plastics test machines is small, so the main machine is less rigid, and the sample itself is not too rigid. Therefore, there are few models of this type of test machines below 10KN, while models below 10KN are commonly used in plastics. It's said beforeUniversal testing machineThe stability of the model is related to the sample. If the sample is single, the test method is relatively single and can be used. Otherwise, the control parameters of the test machine (i.e., the conventional P, I, and D parameters) need to be adjusted at any time. This is almost difficult for non-automatic testers to imagine. Therefore, from a general perspective, in addition to specific requirements for the control method, it is not easy to choose to test plastic materials.

MoreUniversal testing machineAll in Jinan Hengsi Shanda Instrument Network