多采样率牵引传动控制系统中的电流环建模  

Modeling of the Current Loop in Multi-rate Traction Drive Control System

作　　者：田鑫 王琛琛[1] 周明磊[1] 王剑[1] TIAN Xin;WANG Chen-chen;ZHOU Ming-lei;WANG Jian(School of Electrical Engineering,Beijing Jiaotong University,Beijing 100044)

机构地区：[1]北京交通大学电气工程学院,北京100044

出　　处：《导航与控制》2021年第5期121-127,共7页Navigation and Control

摘　　要：随着数字控制技术的发展,多采样率控制已被广泛应用于许多工业领域。在牵引传动控制领域,也有许多学者应用了多采样率控制,然而他们大多数对于多采样率下系统模型、特性的分析并不详尽,多采样率控制下电流环设计存在较大挑战。针对以上问题,对牵引传动控制系统中的多采样率控制进行分析,利用多采样率"提升"技术,获得了理想情况下系统电流环的等效单采样率状态空间模型,然后分析了实际情况下电流环数字延时的产生原因与影响,并在此基础上进一步完善了系统模型。Matlab/Simulink仿真结果表明,提出的理论模型是准确的。With the development of digital control technology, multi-rate control has been widely used in many industrial fields. In the field of traction drive control, the multi-rate control is used by many scholars, but most of the scholars do not analyze the model and the characteristics of the system under multi-rate control in detail, which makes it a great challenge to design the current loop under multi-rate control. Aiming at the above problems, the multi-rate control in traction drive control system is analyzed in this paper. The equivalent single rate state space model of the system current loop under the ideal condition is obtained by using the multi-rate “lifting” technique. Then, the cause and influence of the current loop digital delay in practice are analyzed, based on which the system model is improved. Matlab/Simulink simulation results show that the proposed theoretical model is accurate.

关 键 词：多采样率控制 牵引传动控制系统 数字延时 电流环 

分 类 号：TP273.2[自动化与计算机技术—检测技术与自动化装置]