數(shù)字二次元件變量沖擊機理及其抑制
發(fā)布時間：2019-05-23 01:03
【摘要】：針對數(shù)字二次元件排量切換過程中的轉矩沖擊問題,本文對其形成機理及抑制方法展開了研究。實驗分析表明,轉矩沖擊的產(chǎn)生是由于在控制過程中不同通徑換向閥的壓力加(泄)載存在不同程度的遲滯,壓力遲滯變化導致多個壓力重疊區(qū)的形成,進而產(chǎn)生多個附加轉矩的疊加效應。根據(jù)實驗結果,提出了分級時序控制策略,利用AMESim軟件進行仿真分析,并對仿真優(yōu)化后的控制策略進行實驗驗證。結果表明,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)的動力連續(xù)性原則,達到了系統(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】： 吉林大學機械科學與工程學院;吉林大學汽車仿真與控制國家重點實驗室;吉林大學珠海學院機械與汽車工程系;
【基金】：國家自然科學基金項目(51405183) 教育部博士學科點專項科研基金項目(20130061120036)
【分類號】：TH137
，
本文編號：2483456
[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】： 吉林大學機械科學與工程學院;吉林大學汽車仿真與控制國家重點實驗室;吉林大學珠海學院機械與汽車工程系;
【基金】：國家自然科學基金項目(51405183) 教育部博士學科點專項科研基金項目(20130061120036)
【分類號】：TH137
，
本文編號：2483456
本文鏈接：http://sikaile.net/jixiegongchenglunwen/2483456.html
