Application of Robust Two Degree-of-Freedom Control Using μ-Synthesis to the Vibrations in Vehicle Engine-Body System

1999 ◽  
Author(s):  
J. Yang ◽  
Y. Suematsu ◽  
S. Shimizu ◽  
Y. Okumura
Keyword(s):  
Degree Of Freedom ◽  
Lms Algorithm ◽  
Body System ◽  
Engine Vibration ◽  
Vehicle Engine ◽  
Control Scheme ◽  
Parameter Variations ◽  
Active Vibration ◽  
Feedforward Controller ◽  
Two Degree Of Freedom

Abstract This paper presents a robust active control for the vehicle engine-body system. The robust two degree-of-freedom (2DOF) controller is formed by combining a feedback (FB) controller with a feedforward (FF) controller. The feedback controller is designed by μ-synthesis to attenuate the effect of engine vibration disturbance by modeling the vehicle engine-body system as a nominal four degree-of-freedom vibration system with the parameter variations and the unmodeled dynamics. Based on filtered-X LMS algorithm, an active vibration controller is used as a feedforward controller to improve control performance further. To demonstrate the effectiveness of the control scheme, we have made some experiments in an experimental device, which is designed to imitate real vehicle engine-body system.

Two-Degree-of Freedom Control Using H∞ and ANVC to Reduce the Vibration of Vehicle Engine-Body System

1999 ◽  
Author(s):  
Ryogo Ito ◽  
Jianming Yang ◽  
Yoshikazu Suematsu ◽  
Sohta Shimizu ◽  
Nomio Arai
Keyword(s):  
Degree Of Freedom ◽  
Lms Algorithm ◽  
Body System ◽  
Engine Vibration ◽  
Vehicle Engine ◽  
Active Noise ◽  
Control Scheme ◽  
Feedforward Controller ◽  
Two Degree Of Freedom ◽  
Real Vehicle

Abstract This paper presents a two-degree-of freedom (2DOF) controller, which is combined a feedback (FB) controller with feedforward (FF) controller, to control the vibration of vehicle engine-body system. The robust feedback controller is designed by H∞ theory to attenuate the influence of engine vibration disturbance by modelling the vehicle engine-body system as nominal four-degree-of freedom vibration system with unmodelled disturbance. Based on filtered-X LMS algorithm, an active noise and vibration control is used in a feedforward controller to improve control performance further. To demonstrate the effectiveness of the control scheme, we have made some experiments in an experimental device, which is designed to imitate a real vehicle engine-body system.

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