着重介绍电子式试验机的动力及控制系统的改进前后的原理及技术的对比,阐述改进后的试验机在提升性能的同时生产成本也有所降低,以及该改进后的系统的良好应用前景。 Emphasis is given to the comparison of the principle and technology before and after the improvement on the power and control system of the electronic testing machine. The improved testing machine is also improved in performance while the production cost is also reduced. The good application prospect of the improved system is also presented.