Abstract:Aimed at the high-speed actuators control system, to meet the requirement of high speed, high control accuracy and easily to be applied to engineering, an electro hydraulic position and speed hybrid control strategy based on HNC100 controller is proposed, which ensures actuator to keep high position control accuracy under high moving speed with small overshoot of displacement and controllable moving speed, and therefore to improve the system performance or product quality. The two control strategies built in HNC, that were high speed braking and position close-loop control, were separately applied to working conditions of different speed and loads. The former was applicable to the condition which should keep high position accuracy in high speed with small loads changes. The system was firstly worked in open-loop control, and turned into close-loop control in braking. Even the moving speed could be corrected to effectively adjust process speed. The latter could be used to the situation with large loads changes, by presetting the position and speed curve of motion trail in advance, to implement position close-loop control of whole process. That was simultaneously to ensure accuracies of position and speed. The analog experimental results, based on the hybrid of HNC100 controller and present experimental facilities, show that the good control performance can be obtained using the right strategy built-in HNC, under working conditions of different speed and loads. And it is easy and convenient to debug, with strong adaptability in engineering application.