当前位置: X-MOL 学术Mech. Mach. Theory › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Theoretical and experimental investigation on an integral time-delay feedback control combined with a closed-loop control for an infinitely variable transmission system
Mechanism and Machine Theory ( IF 5.2 ) Pub Date : 2021-06-20 , DOI: 10.1016/j.mechmachtheory.2021.104410
Gang Li , Xuefeng Wang , Weidong Zhu

A nonlinear closed-loop speed ratio control combined with an integral time-delay feedback control is developed to adjust the speed ratio of an infinitely variable transmission (IVT) for a desired output speed with any variable input speed. The speed ratio control of the IVT system is developed based on its nonlinear dynamic model, which involves a forward speed controller and a crank length controller for varying operating conditions. The closed-loop forward speed controller can operate with efficient driving performance based on an optimal operation line of a prime mover. System identification is carried out to achieve high control performance of the IVT system. Comprehensive results of experimental investigation are presented to validate the proposed control strategy for the IVT system. An instrumented rotation speed measurement system is designed so that quantities necessary for the time-delay control variable can be measured. Experimental results show that the speed ratio of the IVT with the proposed control strategy can achieve an excellent tracking response for the desired constant output speed. This study reveals that fluctuations of the output speed of the IVT system can be reduced by time-delay feedback control.



中文翻译:

积分时滞反馈控制与闭环控制相结合的无级变速传动系统理论与实验研究

开发了一种非线性闭环速比控制与积分时延反馈控制相结合,以在任何可变输入速度下调整无级变速器 (IVT) 的速比以获得所需的输出速度。IVT 系统的速比控制是基于其非线性动态模型开发的,该模型涉及用于不同工况的前进速度控制器和曲柄长度控制器。闭环前进速度控制器可以基于原动机的最佳运行线以高效的驱动性能运行。进行系统辨识以实现 IVT 系统的高控制性能。实验研究的综合结果被提出来验证为 IVT 系统提出的控制策略。仪表转速测量系统被设计成可以测量延时控制变量所需的量。实验结果表明,采用所提出的控制策略的 IVT 的速比可以为所需的恒定输出速度实现出色的跟踪响应。这项研究表明,可以通过延时反馈控制来减少 IVT 系统输出速度的波动。

更新日期:2021-06-20
down
wechat
bug