Design of Monitoring and Measuring System of Induction Motor Based on ARM Single Chip Microcomputer
HE Zhi-ming · Electric Machines and Control Application · 2007
In order to reduce the cost of monitoring and measuring system of induction motor and without increasing the rotor's rotational inertia,algorithm of estimating induction motor's dynamic velocity,equation of electromagnetic torque and the method of observing flux with low-pass filter are combined to calculate the velocity and electromagnetic torque of induction motor.High performance and low cost single chip computer(ARM),12-bit serial analog-to-digital converter,general purpose voltage sensor and current sensor are used in the hardware design of the monitoring and measuring system,so the cost of this system is reduced significantly and its high performance is maintained.Wireless communication module(MC35I)is set to complete communication between the monitoring and measuring system and remote computer.Experimental result shows the validity of the estimation of the velocity and electromagnetic torque of induction motor.