并聯(lián)機(jī)床伺服系統(tǒng)雙自適應(yīng)模糊滑模控制

doi:10.6041/j.issn.1000-1298.2012.10.041

首頁 > 過刊瀏覽>2012年第43卷第10期 >229-234. DOI:10.6041/j.issn.1000-1298.2012.10.041

并聯(lián)機(jī)床伺服系統(tǒng)雙自適應(yīng)模糊滑模控制
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                        10.6041/j.issn.1000-1298.2012.10.041
                    
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基金項(xiàng)目:重慶大學(xué)機(jī)械傳動國家重點(diǎn)實(shí)驗(yàn)室開放基金資助項(xiàng)目（SKLMT-KFKT-200901）和西華大學(xué)重點(diǎn)實(shí)驗(yàn)室開放基金資助項(xiàng)目（szjj2011-041）

Double Adaptive Fuzzy Sliding Mode Control for Hydraulic Servo System of Parallel Machine

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摘要:

以并聯(lián)機(jī)床的單通道對稱閥控非對稱液壓缸為研究對象,提出一種適合該系統(tǒng)的將模糊控制、滑模控制、自適應(yīng)控制三者有機(jī)結(jié)合的雙自適應(yīng)模糊滑模控制算法。仿真結(jié)果表明，采用所提方法使系統(tǒng)的輸出漸進(jìn)一致地收斂于參考輸入信號，解決了對稱滑閥控非對稱液壓缸系統(tǒng)存在的動態(tài)性能不對稱、系統(tǒng)精度低、穩(wěn)定性差等問題，可有效快速跟蹤變化信號，對有界的干擾和參數(shù)攝動具有不變性。與常規(guī)PID控制相比，雙自適應(yīng)模糊滑模控制更適合于高階非線性、強(qiáng)干擾的復(fù)雜系統(tǒng)，將此法應(yīng)用于并聯(lián)機(jī)床的液壓控制系統(tǒng)可提高機(jī)床控制精度，改善機(jī)床動態(tài)性能，穩(wěn)態(tài)誤差僅為常規(guī)PID控制的20%。

Abstract:

Taking a single-channel control of parallel machine tools as the research object, an double adaptive fuzzy sliding mode control method adapted to the asymmetric cylinder hydraulic servo system controlled by symmetric valve was presented to make the output of the system follow the reference signal progressively, so that the problems of dynamic performance asymmetry, low accuracy, low stability were resolved. Double adaptive fuzzy sliding mode control was more suited to complex systems with higher order nonlinearity and strong interference. The simulation results demonstrated that the double adaptive fuzzy sliding mode control system could greatly improve the dynamic performance and control precision of parallel machine tools. The steady-state error is only 20% of PID controller.

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唐銳,王少江,侯力,張祺,姜平,任文娟.并聯(lián)機(jī)床伺服系統(tǒng)雙自適應(yīng)模糊滑模控制[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2012,43(10):229-234. Tang Rui, Wang Shaojiang, Hou Li, Zhang Qi, Jiang Ping, Ren Wenjuan. Double Adaptive Fuzzy Sliding Mode Control for Hydraulic Servo System of Parallel Machine[J]. Transactions of the Chinese Society for Agricultural Machinery,2012,43(10):229-234.

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