Methodology for the Design of Feedback Active Vibration Control Systems

2004 ◽  
pp. 193-209 ◽  
Author(s):  
Ioan Doré Landau ◽  
Aurelian Constantinescu ◽  
Daniel Rey ◽  
Alphonse Franco ◽  
Patrice Loubat
Keyword(s):  
Vibration Control ◽  
Control Systems ◽  
Active Vibration Control ◽  
Active Vibration

Frequency Shaped Semi-Active Control for Magnetorheological Fluid-Based Vibration Control Systems

2013 ◽  
Author(s):  
Young-Tai Choi ◽  
Norman M. Wereley ◽  
Gregory J. Hiemenz
Keyword(s):  
Vibration Control ◽  
Control Systems ◽  
Active Control ◽  
Control Algorithm ◽  
Active Vibration Control ◽  
Control Algorithms ◽  
Model Parameters ◽  
Mr Fluid ◽  
Control Current ◽  
Active Vibration

Novel semi-active vibration controllers are developed in this study for magnetorheological (MR) fluid-based vibration control systems, including: (1) a band-pass frequency shaped semi-active control algorithm, (2) a narrow-band frequency shaped semi-active control algorithm. These semi-active vibration control algorithms designed without resorting to the implementation of an active vibration control algorithms upon which is superposed the energy dissipation constraint. These new Frequency Shaped Semi-active Control (FSSC) algorithms require neither an accurate damper (or actuator) model, nor system identification of damper model parameters for determining control current input. In the design procedure for the FSSC algorithms, the semi-active MR damper is not treated as an active force producing actuator, but rather is treated in the design process as a semi-active dissipative device. The control signal from the FSSC algorithms is a control current, and not a control force as is typically done for active controllers. In this study, two FSSC algorithms are formulated and performance of each is assessed via simulation. Performance of the FSSC vibration controllers is evaluated using a single-degree-of-freedom (DOF) MR fluid-based engine mount system. To better understand the control characteristics and advantages of the two FSSC algorithms, the vibration mitigation performance of a semi-active skyhook control algorithm, which is the classical semi-active controller used in base excitation problems, is compared to the two FSSC algorithms.

Identification of the Active Vibration Control Systems—The Bases

2016 ◽  
pp. 81-97
Author(s):  
Ioan Doré Landau ◽  
Tudor-Bogdan Airimitoaie ◽  
Abraham Castellanos-Silva ◽  
Aurelian Constantinescu
Keyword(s):  
Vibration Control ◽  
Control Systems ◽  
Active Vibration Control ◽  
Active Vibration

Vibration Control Using Semi-Active Force Generators

1974 ◽  
Vol 96 (2) ◽  
pp. 619-626 ◽  
Author(s):  
D. Karnopp ◽  
M. J. Crosby ◽  
R. A. Harwood
Keyword(s):  
Vibration Control ◽  
Control Systems ◽  
Power Supply ◽  
Active Vibration Control ◽  
Simulation Studies ◽  
Active Force ◽  
Passive Vibration Control ◽  
Active Vibration ◽  
Computer Simulation Studies ◽  
Force Generator

A type of force generator which can respond to general feedback signals from a vibrating system in order to control the vibration but which does not require the power supply of a servomechanism is described. Computer simulation studies show that performance comparable to that of fully active vibration control systems can be achieved with the semi-active type of device. Physical embodiments of the concept are discussed and compared to hardware used in active and passive vibration control systems.

A Comparative Study and Analysis of Semi-Active Vibration-Control Systems

2002 ◽  
Vol 124 (4) ◽  
pp. 593-605 ◽  
Author(s):  
Nader Jalili
Keyword(s):  
Vibration Control ◽  
Control Systems ◽  
Energy Requirement ◽  
Active Vibration Control ◽  
Parameter Tuning ◽  
Practical Implementation ◽  
Control Effort ◽  
Theoretical Concepts ◽  
Practical Applications ◽  
Active Vibration

Semi-active (SA) vibration-control systems are those which otherwise passively generated damping or spring forces are modulated according to a parameter tuning policy with only a small amount of control effort. SA units, as their name implies, fill the gap between purely passive and fully active vibration-control systems and offer the reliability of passive systems, yet maintain the versatility and adaptability of fully active devices. During recent years there has been considerable interest towards practical implementation of these systems for their low energy requirement and cost. This paper briefly reviews the basic theoretical concepts for SA vibration-control design and implementation, and surveys recent developments and control techniques for these systems. Some related practical applications in vehicle suspensions are also presented.

The Broad-Band Active Vibration Control Systems With Controllable Damping for Non-Conservative Self-Excited Structures

1991 ◽  
Author(s):  
S. V. Kravchenko
Keyword(s):  
Vibration Control ◽  
Control Systems ◽  
Narrow Band ◽  
Active Vibration Control ◽  
Broad Band ◽  
Dynamic Force ◽  
Optimal Control Strategy ◽  
Active Vibration ◽  
Feedback Synthesis ◽  
Conveying Fluid

Abstract The features of active vibration control applied to self-excited non-conservative mechanical systems (such as structures subject to flatter, rotor machines, tubes conveying fluid) are discussed. It has been found that the optimal control strategy is the broad-band compensation of the dynamic force reactions combined with narrow-band damping of the mechanical structure resonant vibration. Some problems of feedback synthesis are solved analytically for these systems. The importance of symmetry and asymmetry for the active vibration control systems is discussed. In the case of self-excited systems, it is possible to use the small asymmetry of the control system for the stabilization of the dynamic process.

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