Investigation of control system of traction electric drive with feedbacks on load

International Conference on Mechanical Engineering, Automation and Control Systems 2017

机械制造;无线电电子学;计算机科学

Kuznetsov, N.K.^1 ; Iov, I.A.^1 ; Iov, A.A.^1

Irkutsk National Research Technical University, Lermontova St., 83 bld, Irkutsk

zip-code 664074, Russia^1

关键词: Calculation scheme;    Dynamic characteristics;    Elastic oscillations;    Electromechanical systems;    Executive mechanism;    Influence of feedback;    Traction electric drives;    Transient process;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/327/5/052023/pdf
DOI  :  10.1088/1757-899X/327/5/052023

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

In the article, by the example of a walking excavator, the results of a study of a control system of traction electric drive with a rigid and flexible feedback on the load are mentioned. Based on the analysis of known works, the calculation scheme has been chosen; the equations of motion of the electromechanical system have been obtained, taking into account the elasticity of the rope and feedbacks on the load in the elastic element. A simulation model of this system has been developed and mathematical modeling of the transient processes to evaluate the influence of feedback on the dynamic characteristics of the mechanism and its efficiency of work was carried out. It is shown that the use of rigid and flexible feedbacks makes it possible to reduce dynamic loads in the traction mechanism and to limit the elastic oscillation of the executive mechanism in transient operating modes in comparison with the standard control system; however, there is some decrease in productivity. It has been also established that the sign-variable of the loading of the electric drive, connected with the opening of the backlashes in the gearbox due to the action of feedbacks on the load in the elastic element, under certain conditions, can lead to undesirable phenomena in the operation of the drive and a decrease in the reliability of its operation.