A Computational Method to Robust Vibration Control of Vehicle Engine-Body System using Haar Wavelets

2006 ◽  
Author(s):  
H. Karimi ◽  
B. Lohmann
Keyword(s):  
Vibration Control ◽  
Computational Method ◽  
Haar Wavelets ◽  
Body System ◽  
Vehicle Engine

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.

Active Residual Vibration Control for Flexible Robot Manipulator Systems

1998 ◽  
Author(s):  
Zhang Xianmin ◽  
Song Li ◽  
Liu Jike
Keyword(s):  
Vibration Control ◽  
Control Method ◽  
Robot Manipulator ◽  
Active Vibration Control ◽  
Computational Method ◽  
Beam Model ◽  
Flexible Robot ◽  
Linear Quadratic ◽  
Active Vibration ◽  
Optimal Control Scheme

Abstract In this paper, a mathematical model for flexible robot manipulators with smart links featuring piezoelectric films is developed in conjunction with the finite element method. The dynamics of piezoelectric actuators and strain gage sensors bonded on the flexible links are presented for beam model. Theory and measures of active vibration control for flexible manipulators are studied based on the modal and modern control theory, and the correspondent optimal control scheme is proposed. The robust control low is formulated based on the modified independent modal control method and the Linear Quadratic theory. The computational method for the actual control moments and the control voltages are also presented.

Methods & Prospects of Research on Flexible Multi-Body Dynamics

2013 ◽  
Vol 353-356 ◽  
pp. 3284-3287
Author(s):  
Lin Xiao Yao ◽  
Lian Yang ◽  
Lin Jian Shangguan
Keyword(s):  
Numerical Calculation ◽  
Vibration Control ◽  
Research Method ◽  
Dynamical Equation ◽  
System Model ◽  
Body System ◽  
Body Dynamics ◽  
System Vibration ◽  
Three Stages ◽  
Multi Body

This paper summarized the research method of flexible multi-body system dynamics. Three stages of flexible multi-body system model are reviewed. The paper is especially summary on modeling method of flexible multi-body system, flexible multi-body dynamical equation numerical calculation and flexible multi-body system vibration control and so on. And the paper is looked forward to further study.

A WAVELET COLLOCATION SCHEME FOR SOLVING SOME OPTIMAL PATH PLANNING PROBLEMS

2016 ◽  
Vol 57 (4) ◽  
pp. 461-481
Author(s):  
MARZIYEH MORTEZAEE ◽  
ALIREZA NAZEMI
Keyword(s):  
Optimal Control ◽  
Path Planning ◽  
Optimal Control Problem ◽  
Control Problem ◽  
Operational Matrix ◽  
Optimal Path ◽  
Computational Method ◽  
Haar Wavelets ◽  
Optimal Path Planning ◽  
Planning Problems

We consider an approximation scheme using Haar wavelets for solving optimal path planning problems. The problem is first expressed as an optimal control problem. A computational method based on Haar wavelets in the time domain is then proposed for solving the obtained optimal control problem. A Haar wavelets integral operational matrix and a direct collocation method are used to find an approximate optimal trajectory of the original problem. Numerical results are also presented for several examples to demonstrate the applicability and efficiency of the proposed method.

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