Abstract
With the advent of new permanent magnet materials and the development of electronic technology, an advanced “brushless DC motor (BLDC)” has been produced. Applying this new product (BLDC) to the automatic transmission electronic oil pump of the automobile has brought about major changes in its power source and executive function mechanism. Based on the characteristics of the electronic oil pump, this paper studies the control method of the brushless DC motor and analyzes the electronic oil pump motor. The speed-current double closed-loop control system is adopted, which can adapt to the load abrupt process brought by the disturbance of the hydraulic system and can reach the steady state quickly. And the application circuit is simple, small in size and easy to implement. Oil-current characteristic control can also be added in subsequent studies to achieve the control requirements of the hydraulic system to precisely adjust the main pressure.
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