A comparative study on H-infinity based vibration controller of a flexible structure system

2000 ◽  
Author(s):  
K. Seto ◽  
I.N. Kar
Keyword(s):  
Comparative Study ◽  
Flexible Structure ◽  
H Infinity ◽  
Structure System

Physical Properties of Transfer Function Zeros for Collocated Control in Flexible Structure System

1995 ◽  
Author(s):  
Chingyei Chung ◽  
Chin-yuh Lin
Keyword(s):  
Transfer Function ◽  
Circulatory System ◽  
Flexible Structure ◽  
Structure System ◽  
Zero Dynamic ◽  
Damping Matrix ◽  
Generalized Force ◽  
Function Zeros ◽  
Gyroscopic Systems ◽  
Collocated Control

Abstract In this paper, the physical meaning of transfer function zeros for collocated control in a general flexible structure system is discussed. For a flexible structure system, we propose the “Zero Dynamic Theorem”. The theorem states that in a flexible structure system, the flexible structure can be a circulatory system (non-sysmetric stiffness matrix) with viscous and gyroscopic damping (non-symmetric damping matrix), if the sensor output (generalized displacement) and the actuator input (generalized force) are “dual type” and the transfer function is strict proper and coprime (no pole/zero cancellation); then, the transfer function zeros are the natural frequencies of constrained structure. Furthermore, with this theorem, the interlacing pole/zero property for the gyroscopic systems is presented.

Bending and Torsional Vibration Control of a Flexible Structure Using H-infinity Based Approach

1997 ◽  
Vol 9 (5) ◽  
pp. 387-392
Author(s):  
Indra N. Kar ◽  
◽  
Kazuto Seto
Keyword(s):  
Torsional Vibration ◽  
Controller Design ◽  
Design Method ◽  
Flexible Structure ◽  
Mass Model ◽  
H Infinity ◽  
Actuator Dynamics ◽  
Lumped Parameter ◽  
Dynamic Output Feedback Controller ◽  
Three Degree Of Freedom

This paper presents a method of controlling the bending and torsional vibration mode of a flexible structure using H-infinity optimal control. A new idea is proposed in order to reduce the unmodeled system uncertainties by placing actuators in the nodes of certain neglected vibration modes. Then, the controller is designed based on the reduced order model and is capable of attenuating vibration without causing spillover instability. For this purpose, a three degree of freedom lumped parameter mass model of a plate structure is considered to control its vibrations using a dynamic output feedback controller. The actuator dynamics and the placement of the actuators are considered for a effective controller design method. The efficacy of the controller is shown through simulations.

Comparative Study of Kalman Filter and H infinity Filter for Current Sensorless Battery Health Analysis

2021 ◽  
Author(s):  
Wahyu Sukestyastama Putra ◽  
Jeki Kuswanto ◽  
Wahid Miftahul Ashari ◽  
Muhammad Koprawi
Keyword(s):  
Kalman Filter ◽  
Comparative Study ◽  
H Infinity ◽  
Current Sensorless

Robust Control for a Flexible Structure Possessing Transverse-Torsional Coupled Vibration

1994 ◽  
Vol 6 (3) ◽  
pp. 237-242
Author(s):  
Toru Watanabe ◽  
◽  
Kazuo Yoshida
Keyword(s):  
Robust Control ◽  
Robust Stability ◽  
Flexible Structure ◽  
Torsional Vibrations ◽  
Vibration Modes ◽  
Vibration Absorbers ◽  
Coupled Vibration ◽  
Robust Performance ◽  
H Infinity ◽  
Dynamic Vibration Absorbers

In this paper robust stability and robust performance between an ordinary H-infinity controller and μ-controller are compared for the case of vibration control of a flexible structure using two active dynamic vibration absorbers. The structure possesses eight transverse-torsional coupled vibration modes, and the aim of this study is to reduce transverse and torsional vibrations simultaneously. After some control experiments were carried out, it was confirmed that the μ-controller shows better robust stability and robust performance than an ordinary H-infinity controller

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