【摘要】：研究了液壓系統(tǒng)的油溫控制。考慮到液壓系統(tǒng)油溫具有大滯后、非線性、時(shí)變性特點(diǎn),傳統(tǒng)的PID控制難以取得滿意的控制效果,提出了一種基于模糊策略的自適應(yīng)PID控制方法。該方法采用模糊推理實(shí)現(xiàn)PID控制器參數(shù)的在線自尋優(yōu),根據(jù)PID參數(shù)對輸出響應(yīng)的影響實(shí)現(xiàn)不同工況下PID參數(shù)的最佳匹配。通過Matlab/Simulink軟件進(jìn)行了傳統(tǒng)PID控制和基于模糊策略的PID控制的仿真比較,結(jié)果表明,基于模糊策略的PID控制方法在調(diào)節(jié)速度、超調(diào)量及穩(wěn)定性方面均有良好的表現(xiàn)。將該方法用于JM128MK型注塑機(jī)液壓系統(tǒng)的實(shí)驗(yàn),已驗(yàn)證了該方法的有效性和合理性。
[Abstract]:The oil temperature control of hydraulic system is studied. Considering that the oil temperature of hydraulic system has the characteristics of large lag, nonlinear and time-varying, it is difficult to obtain satisfactory control effect by traditional PID control. An adaptive PID control method based on fuzzy strategy is proposed. In this method, fuzzy reasoning is used to realize on-line self-optimization of PID controller parameters, and the optimal matching of PID parameters under different conditions is realized according to the effect of PID parameters on output response. The simulation of traditional PID control and PID control based on fuzzy strategy is carried out by Matlab/Simulink software. The results show that the PID control method based on fuzzy strategy has good performance in adjusting speed, overshoot and stability. The method has been applied to the hydraulic system of JM128MK injection molding machine, and the validity and rationality of the method have been verified.
【作者單位】： 臺(tái)州職業(yè)技術(shù)學(xué)院自動(dòng)化研究所;嘉興職業(yè)技術(shù)學(xué)院機(jī)電與汽車分院;
【基金】：浙江省科技廳公益技術(shù)研究工業(yè)項(xiàng)目(2014C31029) 浙江省自然科學(xué)基金(LY14E050001)資助項(xiàng)目
【分類號】：TH137;TP273
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本文編號：2260192