This paper addresses analysis and design issues in PID control for hydraulic turbine using the backstepping algorithm. The first step consists in using a one-order filter to weaken the under-shoot effect caused by the non-stable zero in model, and then, adding an integral action to the basic backstepping algorithm to obtain a zero static error, therefore an integrator is added to the plant model and is then slid back to the controller equation at the end of the design. The PID controller can be obtained by backstepping algorithm and comparison with conventional PID controller.This document explains and demonstrates how to prepare your camera-ready manuscript for Trans Tech Publications. The best is to read these instructions and follow the outline of this text. The text area for your manuscript must be 17 cm wide and 25 cm high (6.7 and 9.8 inches, resp.). Do not place any text outside this area. Use good quality, white paper of approximately 21 x 29 cm or 8 x 11 inches (please do not change the document setting from A4 to letter). Your manuscript will be reduced by approximately 20% by the publisher. Please keep this in mind when designing your figures and tables etc.

This paper present the structure of the rotating valve based electro-hydraulic servomechanism and analyze its model. The electro-hydraulic servomechanism consists of the controller, the step motor, the rotating valve and cylinder, and the displacement sensor. In the servomechanisms model, it contains a time-varying dead-zone. To eliminate the dead-zone effect, we construct a dead-zone inverse model compensates the controller output. The parameters of the dead-zone inverse model are tuned on-line according to the dynamic performance of the feedback system by a group of rule functions. The controller employs the SIMENS PLC S7-200 and using STL program realizes control algorithm and the dead-zone inverse model. This simulative and practical experimenting results show that the compensation method is feasible.