Experimental Investigation on Control of an Infinitely Variable Transmission System for Tidal Current Energy Converters

被引:6
作者
Li, Gang [1 ]
Zhu, Weidong [1 ]
机构
[1] Univ Maryland Baltimore Cty, Dept Mech Engn, Baltimore, MD 21250 USA
关键词
Shafts; Gears; DC motors; Feedback control; Torque; Mechatronics; IEEE transactions; Closed-loop control; experimental investigation; infinitely variable transmission (IVT); speed ratio control; time delay; HYDRAULIC TRANSMISSION; RESOURCE ASSESSMENT;
D O I
10.1109/TMECH.2021.3080591
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
High operation performance of a tidal current energy converter (TCEC) requires a gear transmission with a continuously variable speed ratio for low-speed and high-torque conditions. A nonlinear closed-loop control combined with an integral time-delay feedback control is developed to adjust the speed ratio of an infinitely variable transmission (IVT) system for TCECs. A speed ratio control for the IVT system involves a forward speed controller and a crank length controller for different tidal current speed ranges. The time-delay control is designed to reduce speed fluctuations of the output speed of the IVT with an accurate speed ratio. Experimental investigation was carried out to test the validity of the proposed control strategy for the IVT system. An instrumented rotation speed measurement system is designed so that quantities needed 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 and reduce speed fluctuations of the output speed of the IVT by the time-delay feedback control.
引用
收藏
页码:1960 / 1967
页数:8
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