With the wide application of hydraulic servo technology in control systems, requirement position performance is greater and greater. In order to solve problems slow response, poor precision, weak anti-interference ability controls, a Kalman genetic optimization PID controller designed. Firstly, aiming at nonlinear such as internal leakage oil compressibility system, mathematical model system es...

Hydraulic differential electric servo cylinders are electromechanical tools applicable for driving e.g. manipulators. Actual models are strongly nonlinear, coupled systems of differential equations. In the present paper we propose a new model using fuzzy differential equations under strongly generalized differentiability concept. The key point is a continuous fuzzyfication of the signum functio...

Aiming at the high-precision position control of electro-hydraulic servo pump system, a compensation algorithm based on fuzzy theory is proposed classical PID for factors such as oil compression and system leakage. Firstly, mathematical model was established, online identification load disturbance carried out. Then, leakage controllers were error caused by compensated rules. Finally, effect ver...

This paper proposes the use of backward simulation with Modelica as a tool to improve system design. The aim is to introduce system simulation into early design stages of mechatronic systems and to use the same software tools and model libraries that are also used in later stages for dynamic analysis and control design. It seems that the necessity of a control design is one of the main obstacle...

The fractional order calculus theory and its modeling methods have been applied widely in control field. And design of fractional order control systems become hot point of recent years. This paper establishes fractional order systems which parameters are obtained by Bode’s ideal transfer function method to get the desired frequency response. Apply this method a new control structure of fraction...