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汽車線控轉(zhuǎn)向系統(tǒng)路感模擬方法
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國家自然科學(xué)基金資助項(xiàng)目（50775096）和國家高技術(shù)研究發(fā)展計(jì)劃(863計(jì)劃)資助項(xiàng)目（2006AA110102）


Road Feel Design for Vehicle Steer-by-wire System
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    摘要:

    線控轉(zhuǎn)向系統(tǒng)取消了傳統(tǒng)轉(zhuǎn)向系統(tǒng)方向盤到轉(zhuǎn)向車輪的機(jī)械連接，因而轉(zhuǎn)向路感無法直接反饋給駕駛員，為此通過對汽車轉(zhuǎn)向系統(tǒng)路感的理論分析，建立了線控轉(zhuǎn)向系統(tǒng)動力學(xué)模型。采用卡爾曼濾波技術(shù)對汽車轉(zhuǎn)向系統(tǒng)齒條受力進(jìn)行估計(jì)，并引入電動助力轉(zhuǎn)向系統(tǒng)的助力特性，設(shè)計(jì)復(fù)制電動助力轉(zhuǎn)向系統(tǒng)路感的線控轉(zhuǎn)向系統(tǒng)路感模擬方法。試驗(yàn)結(jié)果表明，路感模擬方法可以使駕駛員獲得有效的路感信息，提高了汽車的操縱性和舒適性。

    Abstract:

    For steer-by-wire (SBW) system removes mechanical linkages between steering system and front wheels, driver is unable to sense road information, a dynamic model of SBW system was established to analyze the road feel theory of vehicle steer system. The road feel control method of SBW system was designed to produce the steering road feel almost the same as that obtained in a conventional electric power steering (EPS) system. Road feel was computed by rack force of steer system and assist characteristics of EPS system. For rack force was difficult to measure, an algorithm was proposed to estimate rack force by Kalman filter. The test results showed that drivers could effective get road feel information and SBW system could improve the vehicle maneuverability by the proposed road feel control method.

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鄭宏宇,宗長富,王 祥.汽車線控轉(zhuǎn)向系統(tǒng)路感模擬方法[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2011,42(2):18-22. Zheng Hongyu, Zong Changfu, Wang Xiang. Road Feel Design for Vehicle Steer-by-wire System[J]. Transactions of the Chinese Society for Agricultural Machinery,2011,42(2):18-22.

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