Implementation and experimental evaluation of PIS control for suppression of flow disturbance to pneumatic vibration isolators

Nakamura, Yukinori; Akagawa, Hirotaka; Wakui, Shinji

doi:10.1109/aim.2014.6878069

Cited by 2 publications

(2 citation statements)

References 23 publications

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“…However, its effectiveness was not verified in the case with our PIS control system, in which the S compensator is parallelly connected with the PI compensator. Moreover, only results on the start-up process of the S compensator have been reported (Tanaka and Wakui, 2018;Nakamura et al, 2014). In this paper, we show that the soft switching approach can reduce the effects of switching during both start-up and shut-down processes.…”

Section: First Practical Problem: Reduction Of Effects Caused By Switmentioning

confidence: 71%

“…Furthermore, this paper investigates effects of the PIS control on vibration transmissibility (Preumont, 2011), which is the performance metric of vibration isolation systems. Although the PIS control-based approach was applied to the vibration control of the pneumatic AVA in previous works (Takagi et al, 2019;Tanaka and Wakui, 2018;Nakamura et al, 2014), the vibration transmissibility for the PIS control system was not analyzed. We explain that, due to the use of the S compensator, anti-resonance and resonance are excited.…”

Section: Introductionmentioning

confidence: 99%

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Flow disturbance attenuation for pneumatic anti-vibration apparatuses with a Sinusoidal compensator and vibration transmissibility analysis

Nakamura

Akagawa

Wakui

2020

Mechanical Engineering Journal

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This paper addresses the compensation of the vibration caused by flow disturbance, which is the pressure fluctuation of compressed air supplied to a pneumatic anti-vibration apparatus (AVA). The pressure of the compressed air changes periodically during compression process. For this reason, proportional-integral-sinusoidal (PIS) control is utilized so that the flow disturbance can be attenuated. In this control method, a Sinusoidal compensator (S compensator) provides a periodic control input signal whose frequency is the same as the frequency of the disturbance. However, when the PIS control is applied to the vibration attenuation for the pneumatic AVA, there arise two practical problems that have to be solved. First, the vibration of an isolated table occurs in transient state at the start-up/shut-down of the S compensator. This is due to the switching of the S compensator. To deal with the first practical problem, soft switching approach is presented. Second, high-frequency vibration is observed in steady state after the S compensator is started up. Since the source of the high-frequency vibration is the phase-lag of the S compensator, a phase-lead type PIS compensator is employed. By using this compensator, the phase margin of a control system can be increased and the high-frequency vibration can be attenuated. Moreover, in this paper, vibration transmissibility is analyzed so as to investigate effects of the PIS control on the isolation from floor vibration. It is shown that 1) when the PIS control is used, anti-resonance and resonance are excited and 2) there is a trade-off between flow disturbance attenuation and vibration transmissibility reduction.

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Section: First Practical Problem: Reduction Of Effects Caused By Switmentioning

confidence: 71%

Section: Introductionmentioning

confidence: 99%

Flow disturbance attenuation for pneumatic anti-vibration apparatuses with a Sinusoidal compensator and vibration transmissibility analysis

Nakamura

Akagawa

Wakui

2020

Mechanical Engineering Journal

Self Cite

View full text Add to dashboard Cite

show abstract

Flow disturbance suppression using cascade-type PIS control for a pneumatic vibration isolator

Nakamura

Akagawa

Wakui

et al. 2016

IECON 2016 - 42nd Annual Conference of the IEEE Industrial Electronics Society

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Implementation and experimental evaluation of PIS control for suppression of flow disturbance to pneumatic vibration isolators

Cited by 2 publications

References 23 publications

Flow disturbance attenuation for pneumatic anti-vibration apparatuses with a Sinusoidal compensator and vibration transmissibility analysis

Flow disturbance attenuation for pneumatic anti-vibration apparatuses with a Sinusoidal compensator and vibration transmissibility analysis

Flow disturbance suppression using cascade-type PIS control for a pneumatic vibration isolator

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