QFT and ZPETC-Based Robust Control Design for a High-Accuracy Tracking System

The principle and design process of QFT and ZPETC are presented.Based on QFT and ZPETC, a design method for high accuracy tracking robust controller is proposed, which consists of a QFT controller and a ZPETC. By using the QFT controller,the robust performance is ensured.At the same time ,ZPETC improves the tracking accuracy.Simulation shows that the method combines QFT and ZPETC is suitable for robust control of the high accuracy tracking system.