Parameter Estimation and Control Structure Synthesis for Oscillatory Mechanical Two-Mass Systems

Abstract

This work presents a complete procedure of the closed-loop control system tunning for the electric drive with a two-mass flexible actuator. The Welch method and frequency analysis are used for the plant’s parameter identification. The feedback compensator based on the time derivative of the acceleration is designed to compensate for the plant oscillations. Model reference control (MRC) control law is used for the velocity control design. An additional actuator end-point model-based observer is designed. The whole proposed methodology is tested and demonstrated on the experimental test bench. The results are discussed and compared with the existing methods.

Keywords

• Acceleration feedback compensation (AFC)
• improved frequency analysis (IFA)
• jerk feedback compensation (JFC)
• mechanical resonance suppression
• model reference control (MRC)
• oscillating system parameter identification