Title :
Modeling of subharmonics and chaos in DC motor drives
Author :
Chau, K.T. ; Chen, J.H. ; Chan, C.C. ; Chan, David T W
Author_Institution :
Dept. of Electr. & Electron. Eng., Hong Kong Univ., Hong Kong
Abstract :
In this paper, the nonlinear dynamics of both voltage-mode and current-mode controlled DC motor drive systems are presented. The investigation is based on the derivation of the discrete mappings that describe their system subharmonics and chaos in the continuous conduction mode of operation. It illustrates that different bifurcation diagrams can be obtained by using different modes of control while varying the same system parameters. A unified modeling approach for the period-1 and hence the period-p orbits as well as their stability analysis during both voltage-mode and current-mode of control is proposed and verified
Keywords :
DC motor drives; bifurcation; chaos; control system analysis; electric current control; harmonics; machine control; machine theory; stability; voltage control; DC motor drives; bifurcation diagrams; chaos modelling; continuous conduction mode; control simulation; current-mode control; discrete mappings; nonlinear dynamics; period-1 orbits; period-p orbits; stability analysis; subharmonics modelling; system subharmonics; unified modeling approach; voltage-mode control; Chaos; Control systems; DC motors; Differential equations; Diodes; Equivalent circuits; Feedback; Torque; Virtual colonoscopy; Voltage control;
Conference_Titel :
Industrial Electronics, Control and Instrumentation, 1997. IECON 97. 23rd International Conference on
Conference_Location :
New Orleans, LA
Print_ISBN :
0-7803-3932-0
DOI :
10.1109/IECON.1997.671788
