数字二次元件变量冲击机理及其抑制
发布时间：2019-05-23 01:03
【摘要】：针对数字二次元件排量切换过程中的转矩冲击问题,本文对其形成机理及抑制方法展开了研究。实验分析表明,转矩冲击的产生是由于在控制过程中不同通径换向阀的压力加(泄)载存在不同程度的迟滞,压力迟滞变化导致多个压力重叠区的形成,进而产生多个附加转矩的叠加效应。根据实验结果,提出了分级时序控制策略,利用AMESim软件进行仿真分析,并对仿真优化后的控制策略进行实验验证。结果表明,所提出的控制策略使冲击度减小23%,有效缓解了该二次元件的切换冲击,并满足了系统的动力连续性原则,达到了系统控制平顺性的需求。
[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.
【作者单位】： 吉林大学机械科学与工程学院;吉林大学汽车仿真与控制国家重点实验室;吉林大学珠海学院机械与汽车工程系;
【基金】：国家自然科学基金项目(51405183) 教育部博士学科点专项科研基金项目(20130061120036)
【分类号】：TH137
，
本文编号：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.
【作者单位】： 吉林大学机械科学与工程学院;吉林大学汽车仿真与控制国家重点实验室;吉林大学珠海学院机械与汽车工程系;
【基金】：国家自然科学基金项目(51405183) 教育部博士学科点专项科研基金项目(20130061120036)
【分类号】：TH137
，
本文编号：2483456
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