Abstract:Aimed at the problem of poor control effect in the highfrequency about the hydraulic excitation system, a displacement and acceleration hybrid control stragety was proposed. In the control algorithm, the displacement and acceleration control were combined with the lowfrequency displacement controloriented and highfrequency acceleration controloriented. Not only the stability control was ensured, but also the highfrequency characteristics of the hydraulic excitation system and the acceleration waveform distortion were improved. Through a hydraulic transportation test system, using a random vibration test, the traditional servo control was very poor, while the hydrid control method was able to get a satisfied control effect. The test results show that the control stragety is satisfying and improved in the highfrequency. In the meantime, the algorithm is simple and easy to implement, and with control stability.