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Modeling and H PID Plus Feedforward Controller Design for an Electrohydraulic Actuator System

Chapter
Part of the Microsystems book series (MICT, volume 23)

Abstract

This work studies the modeling and design of a proportional-integral-derivative (PID) plus feedforward controller for a high precision electrohydraulic actuator (EHA) system. The high precision positioning EHA system is capable of achieving a very high accuracy positioning performance. Many sophisticated control schemes have been developed to address these problems. However, in industrial applications, PID control is still the most popular control strategy used. Therefore, the main objective of this work is to design a PID controller for the EHA system, improving its performance while maintaining and enjoying the simple structure of the PID controller. An extra feedforward term is introduced into the PID controller to compensate for the tracking error especially during the transient period. The PID plus feedforward control design is augmented into a static output feedback (SOF) control design problem and the SOF controller is designed by solving an H optimization problem with bilinear matrix inequalities (BMIs).

Keywords

Tracking Error Linear Matrix Inequality Feedforward Controller Static Output Feedback Linear Matrix Inequality Condition 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  1. 1.Department of Mechanical EngineeringUniversity of SaskatchewanSaskatoonCanada
  2. 2.Department of Mechanical EngineeringUniversity of VictoriaVictoriaCanada

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