Anotace:
Currently, hydraulic actuators are widely used in both civil and military industries that require high response speed and capacity. The problem of accurately controlling the position of hydraulic actuators, especially hydraulic cylinders, is a typical problem and that is why it is of research interest. Fuzzy controllers are successful with complex objects that have incomplete object information and are easier to change than other controllers, but the problem of choosing fuzzy rules, membership functions, as well as the amount of calculation, is still limited. Hedge algebra is a new approach to fuzzy logic computing and has achieved some success in the field of control. In this study, the authors propose a control model using algebraic control algorithms for hydraulic servo systems to overcome the disadvantages of classical PID controllers and the nonlinearity of hydraulic systems. The quality of the hedge algebraic controller has been simulated on Matlab/Simulink software and tested on a real model.