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油氣懸架加載試驗臺正弦波復現(xiàn)控制方法
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Replication Control Method on Hydro-pneumatic Suspension Force Loading System
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    摘要:

    針對某油氣混合型懸架試驗系統(tǒng),建立了油氣懸架負載的電液伺服驅(qū)動力控制系統(tǒng)的數(shù)學模型。提出基于Widrow-Hoff學習算法的ADALINE神經(jīng)網(wǎng)絡控制定步長幅相控制正弦波復現(xiàn)方法。在對算法收斂速度影響因素分析的基礎上,提出了應用相對量實現(xiàn)幅相控制的改進方法。以油氣懸架加載試驗臺系統(tǒng)特性為仿真對象,對比了相對量控制方法與絕對量控制方法在收斂速度上的不同,給出了系統(tǒng)收斂時間與輸入信號頻率和幅值的關系,算法收斂終值與幅值及頻率的關系。結(jié)果證明,將相對量作為幅相控制的輸入,可以有效地提高系統(tǒng)的收斂速度,間接提高了正弦波復現(xiàn)的精度,使幅相控制方法具有更好的實用效果。

    Abstract:

    A mathematic model of electro-hydraulic servo driving force control system for a hydro-pneumatic suspension was established. This paper analyzed the control method usually used in wave form reappeared. The fixed step phase and amplitude control method use ADALINE neural network based on Widrow-Hoff learning algorithm was emphatically introduced aiming at sine wave reappearing. This paper put forward phase and amplitude control improved method use relative quantity based on the analyses of the algorithm the convergence speed influencing factors. This learning algorithm and absolute amount control method were used to control a kind of hydro-pneumatic suspension force loading system model. The convergence rate, the relationship between convergence time and input signal’s frequency and amplitude, the relationship between algorithm convergence value and input signal’s frequency and amplitude was presented. Outcome shows that using the relative value as the input of the phase and amplitude control could improve the convergence speed and the reappeared precision of sine wave effectively. The phase and amplitude control can get better practical effect. 

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張輝,何景峰,韓俊偉.油氣懸架加載試驗臺正弦波復現(xiàn)控制方法[J].農(nóng)業(yè)機械學報,2009,40(7):35-39. Replication Control Method on Hydro-pneumatic Suspension Force Loading System[J]. Transactions of the Chinese Society for Agricultural Machinery,2009,40(7):35-39.

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