Identification and control of precision XY stages with active vibration suppression system

2008 ◽  
Author(s):  
Mayumi Nitta ◽  
Seiji Hashimoto
Keyword(s):  
Vibration Suppression ◽  
Active Vibration Suppression ◽  
Active Vibration ◽  
And Control ◽  
Suppression System

Comprehensive Assessment of Semi-Active Vibration Suppression Including Energy Analysis

2006 ◽  
Vol 129 (1) ◽  
pp. 84-93 ◽  
Author(s):  
Kanjuro Makihara ◽  
Junjiro Onoda ◽  
Kenji Minesugi
Keyword(s):  
Time Delays ◽  
Energy Exchange ◽  
Vibration Suppression ◽  
Electrical Energy ◽  
Model Errors ◽  
Active Vibration Suppression ◽  
Suppression Mechanism ◽  
Active Vibration ◽  
Switching Method ◽  
And Control

This paper presents an extensive investigation on the LR-switching method (also called the energy-recycling semi-active method). Compared with the energy-dissipative R-switching method, the LR-switching method has been shown to have significantly better vibration suppression performance. However, certain essential issues affecting a system employing the LR-switching method remained to be dealt with. In particular, we had to clarify its vibration suppression mechanism from the viewpoint of mechanical and electrical energy exchange. Second, the robustness of the method against model errors and control time delays had to be verified. The experiments and numerical simulations that we conducted on a 10-bay truss structure demonstrate that the LR-switching method outperforms other suppression methods under sinusoidal and random excitations, which are more common in real systems and more difficult to deal with than transient vibrations. This paper provides fundamental insights on the LR-switching method and gives the method a guarantee for actual applications.

Adaptive active vibration suppression of flexible beam structures

2008 ◽  
Vol 222 (3) ◽  
pp. 357-364 ◽  
Author(s):  
Y Xia ◽  
A Ghasempoor
Keyword(s):  
Vibration Control ◽  
Time Delays ◽  
Vibration Suppression ◽  
Control Strategies ◽  
Linear Optimization ◽  
Active Vibration Control ◽  
Flexible Beam ◽  
Active Vibration Suppression ◽  
Active Vibration ◽  
Suppression System

Vibration control strategies strive to reduce the effect of harmful vibrations on machinery and people. In general, these strategies are classified as passive or active. Although passive vibration control techniques are generally less complex, there is a limit to their effectiveness. Active vibration control strategies, on the other hand, can be very effective but require more complex algorithms and are especially susceptible to time delays. The current paper introduces a novel vibration suppression system using non-linear optimization. The proposed methodology eliminates the need for a feedback loop and the sensitivity to time delays. The system has been evaluated experimentally and the results show the validity of the proposed methodology.

Characterization of piezoelectric patch material with hysteresis, saturation, creep, and vibration nonlinearity effects and its application to the active vibration suppression for cantilever beam

2020 ◽  
pp. 107754632098057
Author(s):  
Mohd Hafiz Abdul Satar ◽  
Ahmad Firdaus Murad ◽  
Ahmad Zhafran Ahmad Mazlan
Keyword(s):  
Cantilever Beam ◽  
Vibration Suppression ◽  
Research Work ◽  
Piezoelectric Patch ◽  
Active Vibration Suppression ◽  
Vibration Attenuation ◽  
Frequency Independent ◽  
Active Vibration ◽  
Integral Controller ◽  
Suppression System

This research work aims to investigate the presence of four nonlinear characteristics (i.e., hysteresis, saturation, creep, and uncertainty vibration) when a piezoelectric patch material acts as an actuator and sensor for the active vibration suppression of a cantilever beam. The parameters such as different operating frequencies and voltages are taken into account for the piezoelectric patch material characterization and the vibration before and after activation of a proportional–derivative–integral controller in an active vibration suppression system are measured. The effect of different proportional–derivative–integral controller tuning methods, frequency independent, and frequency dependency excitations are the three main contributions to evaluate the performance of active vibration suppression system. From the results, the piezoelectric actuator posed all the four nonlinearity effects while only three are observed in the sensor characteristics, and these effects increased significantly with the increase of operating frequencies and voltages. For the frequency-independent excitation of the active vibration suppression system, the vibration attenuation of the beam shows an improvement from low to higher excitation frequency, except at 500 Hz because of the saturation effect. In terms of controller performances, the proportional gain step-up method shows the best performance by scoring 3/5 of highest vibration attenuation percentages compared with manual and Ziegler–Nichols methods. For the frequency-dependent excitation, the effective frequency range for the active vibration suppression system is determined between 75 and 245 Hz with the highest vibration attenuation of 79.60% occurred at the second natural frequency of the beam.

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