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超磁致伸縮執(zhí)行器率相關(guān)遲滯混合模型研究
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國(guó)家自然科學(xué)基金資助項(xiàng)目(51275462)、高等學(xué)校博士學(xué)科點(diǎn)專項(xiàng)科研基金資助項(xiàng)目(20110101110014)和浙江省自然科學(xué)基金資助項(xiàng)目(Z1080537)


Hybrid Rate dependent Hysteresis Model in Giant Magnetostrictive Actuaor
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    摘要:

    超磁致伸縮執(zhí)行器的遲滯具有率相關(guān)特性。提出一種混合建模方法用于率相關(guān)遲滯建模。首先,在低頻激勵(lì)下,建立系統(tǒng)的率不相關(guān)PI遲滯模型;其次,在高頻激勵(lì)下,提出率不相關(guān)PI遲滯模型求逆與擬合相結(jié)合的方法,將系統(tǒng)響應(yīng)解耦,進(jìn)而建立系統(tǒng)線性環(huán)節(jié)模型;然后,在上述基礎(chǔ)上,提出并建立系統(tǒng)遲滯環(huán)節(jié)的率相關(guān)PI遲滯模型;最后,通過(guò)系統(tǒng)線性環(huán)節(jié)模型和率相關(guān)PI遲滯模型串聯(lián)得到率相關(guān)遲滯混合模型。實(shí)驗(yàn)結(jié)果顯示:相對(duì)于率不相關(guān)遲滯模型或率不相關(guān)遲滯混合模型,率相關(guān)遲滯混合模型具有更高的精度,從而驗(yàn)證了所提模型的有效性和精確性。

    Abstract:

    The hysteresis of giant magnetostrictive actuator has the property of rate dependence. A new model for the rate dependent hysteresis was proposed by using hybrid modeling method. The model is composed of a linearity element and a rate dependent hysteresis element. First, the rate independent hysteresis of the system was modeled by modified PI model when 2Hz sinusoidal signal was employed to excite the system. Second, the coupling response of the linearity and the hysteresis elements was decoupled by the method of combining the inversion of the rate independent hysteresis model and fitting method when 100Hz sinusoidal signal was employed to excite the system. Then, a new rate dependent hysteresis model was proposed and implemented on the above bases. At last, the hybrid rate dependent hysteresis model was obtained by connecting the linearity element and the rate dependent hysteresis element in series. Compared with rate independent hysteresis model and hybrid rate independent hysteresis model, the proposed hybrid model is more accurate than other models.

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劉孝亮,鄔義杰,章一智,彭黃湖.超磁致伸縮執(zhí)行器率相關(guān)遲滯混合模型研究[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2014,45(7):286-291. Liu Xiaoliang, Wu Yijie, Zhang Yizhi, Peng Huanghu. Hybrid Rate dependent Hysteresis Model in Giant Magnetostrictive Actuaor[J]. Transactions of the Chinese Society for Agricultural Machinery,2014,45(7):286-291.

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  • 收稿日期:2013-07-26
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  • 在線發(fā)布日期: 2014-07-10
  • 出版日期: 2014-07-10
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