Vibration control and feedback control of crane rope-and-mass system

This paper presents fuzzy logic based velocity feedback control for active vibration control of beams. The controller is first developed for a single degree of freedom spring mass system. Rule base consisting of three simple rules based on velocity is used. It is found theoretically as well as experimentally, that for the same settling time maximum applied force required by fuzzy logic controller is much less than that required by direct negative velocity feedback control. The fuzzy controller so developed is then applied for active vibration control of beams. The controller is implemented experimentally on a test beam and the results are found satisfactory. The test system consists of a cantilevered beam with piezoelectric sensor and actuator patches mounted in collocated fashion. The fuzzy logic controller is based on modal velocity of the beam. Modal velocity of the beam acts as an input to the fuzzy controller and actuation force is output from the inference engine. The issues related to design of fuzzy logic controller based on velocity are discussed.

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Vibration Control of Two-mass System with Low Inertia Ratio Considering Practical Use

IEEJ Transactions on Electronics Information and Systems ◽

10.1541/ieejeiss1987.117.11_1593 ◽

1997 ◽

Vol 117 (11) ◽

pp. 1593-1599

Author(s):

Shigeo Morimoto ◽

Akira Hamamoto ◽

Yoji Takeda

Keyword(s):

Vibration Control ◽

Mass System

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Vibration control of beams using multiobjective state-feedback control

Smart Materials and Structures ◽

10.1088/0964-1726/15/1/044 ◽

2006 ◽

Vol 15 (1) ◽

pp. 157-163 ◽

Cited By ~ 12

Author(s):

Seongil Hong ◽

Chul H Park ◽

Hyun C Park

Keyword(s):

Feedback Control ◽

Vibration Control ◽

State Feedback ◽

State Feedback Control

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Surface Texture Improvement in the Turning Process Via Application of a Magnetostrictively Actuated Tool Holder

Journal of Dynamic Systems Measurement and Control ◽

10.1115/1.2802409 ◽

1998 ◽

Vol 120 (2) ◽

pp. 193-199 ◽

Cited By ~ 12

Author(s):

D. Liu ◽

J. W. Sutherland ◽

K. S. Moon ◽

T. J. Sturos ◽

A. R. Kashani

Keyword(s):

Control System ◽

Feedback Control ◽

Dynamic Response ◽

Vibration Control ◽

Surface Texture ◽

Turning Process ◽

Tool Holder ◽

Rate Feedback ◽

Control Scheme ◽

Surface Profiles

An active vibration control system for a turning process is presented. The system employs a magnetostrictive actuator and a rate feedback control scheme to suppress the vibration caused by random excitation in the turning process. A specially designed tool holder is developed to implement the actuation and the control scheme effectively. A model which accounts for both the dynamic response of the cutting process and the control system is described. The effectiveness of the vibration control system is studied via simulation and a series of experiments. A disturbance force is applied to the system by a shaker and the dynamic response of the system is observed. The experimental data shows that the rate feedback control scheme adds additional damping to the system and reduces the vibration. A complete set of 24 factorial design cutting experiments were also conducted using the tool holder and experimentally obtained surface profiles were compared to surface profiles obtained without the vibration control. It is shown that the system can improve the surface texture generated by the turning process.

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