【摘要】 提出了一种基于模型参考自适应系统的转子电阻在线辨识算法，只需以定子侧的可测变量作为输入量，且算法简单。仿真结果证明，此算法是有效的，具有工程实用价值。更多还原

【Abstract】 Thecontrol accuracy of a field-oriented control system for an induction motor is depend-ent on the variation of rotor resistance with the temperature during operation。On-line identi-fication of rotor resistance is an effective way to improve the control system accuracy. Theerror equation of flux linkage with the variation of rotor resistance is derived and an algo-rithm for identifying the rotor resistance based on the Popov stability theory is then given.The error of the flux linkage is used to make the rotor resistance to be identified converge toits true value and only the measurable stator variables are taken as the input.The algorithmhas a structure of the model reference adaptive system. The effect of the parameters in thealgorithm on the identification speed and accuracy is discussed.Numerical simulation showsthat the algorithm is effective and the time needed for the convergence of resistance to itstrue value is 10 ms.更多还原