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單質(zhì)體非線性銳共振機(jī)械變結(jié)構(gòu)同步控制
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Variable Structure Synchronization Control for the Single-mass Nonlinear Sharp Resonance Vibration Machine
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    摘要:

    基于雙電動機(jī)驅(qū)動單質(zhì)體非線性振動機(jī)械的動力學(xué)模型，推導(dǎo)出雙激振電動機(jī)的相位差狀態(tài)空間方程，在系統(tǒng)銳共振(頻率比為0.95~1.05)條件下，建立非線性系統(tǒng)的變結(jié)構(gòu)同步控制器，并對同步控制器參數(shù)的選取進(jìn)行了理論推導(dǎo)。仿真結(jié)果表明，雙激振電動機(jī)的變結(jié)構(gòu)控制同步策略比目前廣泛應(yīng)用的傳統(tǒng)PID同步控制策略，能更有效地控制由電動機(jī)參數(shù)差異、外擾等因素引起的同步性誤差，改善多電動機(jī)同步性能以及非線性系統(tǒng)的振動運動特性。

    Abstract:

    Based on the dynamic model of single-mass nonlinear vibration machine which driven by dual motors, the phase-difference state space equations of dual exciting motors were deduced. Under systemic sharp resonance conditions (frequency ratio was 0.95~1.05), the nonlinear variable structure synchronization controller was designed, and the parameters of the synchronization controller were deduced by theoretical method. The results of numerical simulation showed that, using the variable structure synchronization control strategy to make the dual exciting motors realized the control synchronization motion have more dominance than the traditional PID synchronization control strategy which widely used in industry control field. The variable structure control synchronization strategy could effectively improve the performance of synchronization for dual exciting motors by reduce the synchronization error which caused by the performance difference of motors, exterior disturbance and so on. It could also improve the vibrating characteristics of nonlinear system. 

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李小號,劉杰,劉勁濤.單質(zhì)體非線性銳共振機(jī)械變結(jié)構(gòu)同步控制[J].農(nóng)業(yè)機(jī)械學(xué)報,2010,41(10):204-208.Variable Structure Synchronization Control for the Single-mass Nonlinear Sharp Resonance Vibration Machine[J]. Transactions of the Chinese Society for Agricultural Machinery,2010,41(10):204-208.

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