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Abstruct: In this paper, we propose a new method for diirect identifying the stator flux linkage and electromagnetic torque of induction motors, which uses artificial neural networks. Because the multilayer feedforward network has the good capability of approximating any linear or nonlinear function, which is trained using the back propagation (BP) algorithm, it can observe the stator flux linkage and electro-magnetic torque of induction motors accurately. Based on this principle, we built a new direct torque control (DTC) system. With simulation experiment, the results show that this method can observe accurately the stator flux linkage and electro-magnetic torque of induction' motors, and the system has good dynamic and static performance.Keywords-About four, direct torque control, artificial neural network, multilayer feedforward network, error back propagation algorithm