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電動(dòng)助力轉(zhuǎn)向系統(tǒng)回正控制研究
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    摘要:

    根據(jù)轉(zhuǎn)向系統(tǒng)的回正特性,針對(duì)現(xiàn)有的電動(dòng)助力轉(zhuǎn)向系統(tǒng)模型在回正控制中的不足,提出了新的回正控制算法。借助專家控制器,實(shí)現(xiàn)了不同轉(zhuǎn)向狀態(tài)下控制策略的變換,即將常規(guī)助力控制和回正控制算法結(jié)合,采用控制器的辨識(shí)算法和監(jiān)督算法構(gòu)成閉環(huán)系統(tǒng),使轉(zhuǎn)向行程判斷準(zhǔn)確,實(shí)時(shí)性好。在此基礎(chǔ)上,設(shè)計(jì)了新型的試驗(yàn)臺(tái)架,可以更好地模擬車輪轉(zhuǎn)向過(guò)程。結(jié)果表明,采用該回正控制策略能獲得較好的回正性能,同時(shí)提高了轉(zhuǎn)向系統(tǒng)的穩(wěn)定性。

    Abstract:

    According to the return-to-center characteristics of a steering system and the deficiencies of an electric steering system model in the process of return-to-center, a new return-to-center control scheme was put forward. By dint of an expert controller, a control scheme that can convert in different steering state was realized. Based on above analysis, a new pattern of test-bed was designed, which could simulate the process of steering better. The results show that this control scheme can obtain excellent return-to-center performance and improve the stability of steering system.

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高勇,陳龍,袁傳義,江浩斌,袁朝春.電動(dòng)助力轉(zhuǎn)向系統(tǒng)回正控制研究[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2007,38(5):6-10.[J]. Transactions of the Chinese Society for Agricultural Machinery,2007,38(5):6-10.

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