【摘要】：針對(duì)數(shù)字二次元件排量切換過(guò)程中的轉(zhuǎn)矩沖擊問(wèn)題,本文對(duì)其形成機(jī)理及抑制方法展開(kāi)了研究。實(shí)驗(yàn)分析表明,轉(zhuǎn)矩沖擊的產(chǎn)生是由于在控制過(guò)程中不同通徑換向閥的壓力加(泄)載存在不同程度的遲滯,壓力遲滯變化導(dǎo)致多個(gè)壓力重疊區(qū)的形成,進(jìn)而產(chǎn)生多個(gè)附加轉(zhuǎn)矩的疊加效應(yīng)。根據(jù)實(shí)驗(yàn)結(jié)果,提出了分級(jí)時(shí)序控制策略,利用AMESim軟件進(jìn)行仿真分析,并對(duì)仿真優(yōu)化后的控制策略進(jìn)行實(shí)驗(yàn)驗(yàn)證。結(jié)果表明,所提出的控制策略使沖擊度減小23%,有效緩解了該二次元件的切換沖擊,并滿足了系統(tǒng)的動(dòng)力連續(xù)性原則,達(dá)到了系統(tǒng)控制平順性的需求。
[Abstract]:In order to solve the torque impact problem in the process of digital quadratic element displacement switching, the formation mechanism and suppression method are studied in this paper. The experimental analysis shows that the torque impact is due to the different degrees of delay in the pressure addition (discharge) load of different diameter directional valves in the control process, and the change of pressure lag leads to the formation of multiple pressure overlap zones. Furthermore, the superposition effect of multiple additional torque is produced. According to the experimental results, a hierarchical timing control strategy is proposed, which is simulated and analyzed by AMESim software, and the optimized control strategy is verified by experiments. The results show that the proposed control strategy can reduce the impact degree by 23%, effectively alleviate the switching impact of the secondary element, meet the principle of dynamic continuity of the system, and meet the requirements of system control comfort.
【作者單位】： 吉林大學(xué)機(jī)械科學(xué)與工程學(xué)院;吉林大學(xué)汽車(chē)仿真與控制國(guó)家重點(diǎn)實(shí)驗(yàn)室;吉林大學(xué)珠海學(xué)院機(jī)械與汽車(chē)工程系;
【基金】：國(guó)家自然科學(xué)基金項(xiàng)目(51405183) 教育部博士學(xué)科點(diǎn)專(zhuān)項(xiàng)科研基金項(xiàng)目(20130061120036)
【分類(lèi)號(hào)】：TH137
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本文編號(hào)：2483456