本文選題：壓電彈性梁　切入點(diǎn)：主共振　出處：《振動(dòng)與沖擊》2016年24期 　論文類型：期刊論文

【摘要】：應(yīng)用時(shí)滯加速度反饋控制方法研究壓電彈性梁主共振響應(yīng)的減振控制。基于Hamilton原理和時(shí)滯加速度閉環(huán)反饋控制策略,建立了壓電耦合彈性梁的非線性動(dòng)力學(xué)模型。采用多尺度方法,得到了受控梁主共振響應(yīng)的一階近似解及穩(wěn)定性條件,進(jìn)而給出了響應(yīng)峰值和臨界激勵(lì)幅值的表達(dá)式,并給出算例分析。結(jié)果表明:采用時(shí)滯加速度反饋控制可以有效減振,其主共振響應(yīng)受時(shí)滯值周期性影響,合理選取控制增益和時(shí)滯值,可以避免主共振區(qū)及多值不穩(wěn)定解,提高振動(dòng)控制效果。
[Abstract]:The damping control of the main resonance response of piezoelectric elastic beam is studied by using the time-delay acceleration feedback control method. Based on the Hamilton principle and the time-delay acceleration closed-loop feedback control strategy, The nonlinear dynamic model of piezoelectric coupled elastic beam is established. The first order approximate solution and stability condition of the main resonance response of the controlled beam are obtained by using the multi-scale method, and the expressions of the response peak value and the critical excitation amplitude are given. An example is given. The results show that the main resonance response is influenced by the periodicity of time-delay, and the control gain and time-delay value can be reasonably selected to avoid the main resonance region and multi-value unstable solutions, and the results show that the main resonance response can be effectively reduced by using the time-delay acceleration feedback control, and the main resonance response is influenced by the time-delay periodic response. Improve vibration control effect.
【作者單位】： 湖南科技大學(xué)土木工程學(xué)院;
【基金】：國家重點(diǎn)基礎(chǔ)研究發(fā)展計(jì)劃(973)項(xiàng)目(2015CB057702) 國家自然科學(xué)基金項(xiàng)目(11402085;11272119) 湖南省教育廳項(xiàng)目(14C0464) 湖南省優(yōu)秀博士論文資助項(xiàng)目(YB2015B035)
【分類號(hào)】：O328

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