基于电动拖拉机电机温度补偿的耕作阻力自适应运行控制方法

IF 2.4 3区 工程技术 Q3 ENGINEERING, ENVIRONMENTAL
Qi Wang , Xudong Wang , Wei Wang , Yongjie Cui , Yuling Song
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引用次数: 0

摘要

传统的耕作效率控制方法难以兼顾耕作效率和均匀耕深,而且在电动拖拉机作业过程中,电机温升对控制精度的影响不容忽视。因此,针对配备滑动电池组的电动拖拉机,提出了一种考虑电机温升的耕作阻力自适应运行控制方法。首先,根据所获得的不同温度下的绕组电阻和磁通链路,为 PMSM 建立了带温度补偿的面向磁场的控制模型。然后,通过模糊神经网络算法调节驱动扭矩和电池位移以适应阻力变化,从而实现速度和滑移率的联合控制,并进行了仿真分析。最后,进行了田间耕作试验。结果表明,与无控制相比,牵引效率提高了 23.33%,而且当电机温度升高时,可以通过温度补偿准确输出所需的转矩,速度和滑移率的平均相对误差都减小了。所提出的方法可以改善滑移,大大提高犁地作业的稳定性,为电动拖拉机的自动精准作业提供了技术支持。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Plowing drag-adaptive operation control method based on motor temperature compensation for electric tractor

Traditional plowing efficiency control methods are difficult to balance the tillage efficiency and uniform plowing depth, and the impact of the motor temperature rise on the control accuracy cannot be ignored during electric tractor operations. Therefore, a plowing drag-adaptive operation control method considering the motor temperature rise was proposed for an electric tractor equipped with a sliding battery pack. Firstly, a field-oriented control model with temperature compensation for the PMSM was developed based on the obtained winding resistances and flux links at different temperatures. Then, the driving torque and battery displacement were regulated to adapt the drag variation by the fuzzy neural network algorithm, allowing joint control of the speed and slip rate, and the simulation analysis was performed. Finally, a field plowing test was conducted. The results showed that the traction efficiency is increased by 23.33 % compared with those without control, and when the motor temperature rises, it can be compensated for temperature to output the required torque accurately, and the average relative errors in both speed and slip rate are reduced. The proposed method can improve the slip and greatly enhance the plowing operational stability, which provided technical support for the automatic precision operation of electric tractors.

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来源期刊
Journal of Terramechanics
Journal of Terramechanics 工程技术-工程:环境
CiteScore
5.90
自引率
8.30%
发文量
33
审稿时长
15.3 weeks
期刊介绍: The Journal of Terramechanics is primarily devoted to scientific articles concerned with research, design, and equipment utilization in the field of terramechanics. The Journal of Terramechanics is the leading international journal serving the multidisciplinary global off-road vehicle and soil working machinery industries, and related user community, governmental agencies and universities. The Journal of Terramechanics provides a forum for those involved in research, development, design, innovation, testing, application and utilization of off-road vehicles and soil working machinery, and their sub-systems and components. The Journal presents a cross-section of technical papers, reviews, comments and discussions, and serves as a medium for recording recent progress in the field.
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