Transient vibration control using nonlinear convergence active vibration absorber for impulse excitation

2019 ◽  
Vol 117 ◽  
pp. 425-436 ◽  
Author(s):  
Xi Wang ◽  
Bintang Yang
2012 ◽  
Vol 160 ◽  
pp. 258-262 ◽  
Author(s):  
Ya Li Zhou ◽  
Yi Xin Yin ◽  
Qi Zhi Zhang ◽  
Woon Seng Gan

In this paper, active control of periodic transient vibration based on repetitive control (RC) algorithm is studied. According to the stability condition of an active vibration control (AVC) system, a novel non-causal stable inversion approach combined with an optimal criterion is used to design the RC controller for an AVC system with a non-minimum phase secondary path. Computer simulations have been carried out to validate the effectiveness of the proposed algorithm. The plant model used in the computer simulations is obtained from a practical AVC system in our laboratory. Simulation results show that the proposed scheme can significantly reduce periodic transient vibration and the convergence rate is acceptable for a non-minimum phase plant.


1991 ◽  
Vol 57 (534) ◽  
pp. 472-477 ◽  
Author(s):  
Kazuo YOSHIDA ◽  
Tarou SHIMOGOU ◽  
Junji HASHIMOTO ◽  
Tetsuo SUZUKI ◽  
Mitsuru KAGEYAMA ◽  
...  

2014 ◽  
Vol 564 ◽  
pp. 143-148 ◽  
Author(s):  
Teng Sheng Su ◽  
Chen Far Hung ◽  
Shu Hua Chang ◽  
Ting Hao Wu ◽  
Luh Maan Chang

In this paper a new type of semi-active vibration absorber has been developed. The vibration absorber consists of mass block, cantilever beam, magnet lock system, vibration and distance sensors, controller and servo motor. The mass block is fixed on the tip of cantilever beam, and the control process is driven by a servo motor and a transmit gears. Portion of cantilever was cut in form of gear tracks, which can be driven by servo motor through transmit gear to regulate the length of the cantilever beam, and the natural frequency of absorber will also be regulated. After the mass locates in right position (i.e. the natural frequency of absorber is in assigned condition), the magnetic lock will clamp the cantilever beam. The design has the benefit of simplified control system, and extra unknown vibration modes will be averted. A fabrication prototype of the proposed semi-active vibration absorber is constructed and tested to demonstrate the application and modeling of the new cantilever beam damper. By performing the experimental work, the semi-active vibration control system is designed not only for reduce vibration level in resonant condition, but also considered for vibration attenuation in non-resonant conditions.


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