초록

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Abstract ▼ AI-Helper

In this paper. we develop a system to perform torque measurement and detail on the hardware and software for the equipment. AVR8515 microcontroller is used for the implementation in hardware. The instantaneous torque is measured indirectly by the data of phase currents. back-emf and rotational speed...

In this paper. we develop a system to perform torque measurement and detail on the hardware and software for the equipment. AVR8515 microcontroller is used for the implementation in hardware. The instantaneous torque is measured indirectly by the data of phase currents. back-emf and rotational speeds of a motor which are obtained from the developed system. Then torque ripples are observed. A three-phase four-pole brushless DC motor is tested for the experiment and the machine is examined at 350. 700 and 1200rpm. respectively. To assess the quality of the system, profiles of the acquired back-ernf and phase currents are compared with those photographs, and they are identical. And then instantaneous torque is evaluated using the acquired data, and the resulting waveforms are displayed. The validity of the developed system is demonstrated by experimental results.