Design of the measurement and control system of multi-dimensional loading system for ITER magnet supports

In order to test the reliability of ITER magnet support structure, the multi-dimensional loading test platform was established for mechanical properties test of support components. The measurement and control system consists of seven sets of EDC controller and board, computer system, 16-channel quasi-dynamic strain gauge, 25 sets of displacement sensors, 7 sets of load and displacement sensors in the cylinders. On the basis of the programmable language, the measurment and control process for the muti-channel loading is realized, and the synchronizing control experiment with high precision for 7 sets of twin-cylinders is accomplished by using EDC220 digital controllers. Under the typical loading conditions, the engineering test result shows that the design of the system is rational, the control system is reliable, and it can guarantee the next requirement of the experiment. (authors)