Pure hardware simulation controller for DC brushless motor

Abstract

The invention relates to a pure hardware simulation controller for a DC brushless motor. The pure hardware simulation controller comprises a Hall sensor and decoding unit, a digital logic controller and an intelligent power module (IPM), wherein the Hall sensor and decoding unit detects a position signal of a rotor and transmits the signal to the digital logic controller. The pure hardware simulation controller is characterized by further comprising a pulse width modulation (PWM) signal generation circuit, wherein a PWM signal output by the PWM signal generation circuit is input to the digital logic controller for processing; the output end of the digital logic controller is connected with the input end of the IPM; and the output end of the IPM is connected with a stator winding. The pure hardware simulation controller can conveniently regulate speed, rapidly meet requirements on the performance of different series of motors with different rotating speeds, reduce difficulties in research, development and production, decrease the rejection rate of the product, improve efficiency and reduce cost.

Description

Technical field: [0001] The invention relates to a pure hardware analog controller of a DC brushless motor. Background technique: [0002] At present, most of the controllers of brushless DC motors mostly use single-chip microcomputer, digital signal processor DSP, etc. as their core processing devices, and are controlled by writing software. The cost is high, the development cycle is long, and the single-chip microcomputer, digital signal The function of the processor DSP causes a certain waste. [0003] In view of this, some pure hardware analog controllers of brushless DC motors are favored by everyone for their simple control and low cost. However, since it cannot perform speed regulation control, the logic controller can only output 100% PWM (ie: constant dc bus voltage), then the same series of motors with different speeds can only be completed by designing electromagnetic schemes with different parameters Speed ​​regulation, and due to the technological level, chang...

AI Technical Summary

Problems solved by technology

However, since it cannot perform speed regulation control, the logic controller can only output 100% PWM (ie: constant dc bus voltage), then the same series of motors with different speeds can only be completed by designing electromagnetic schemes with different parameters Speed ​​regulation, and due to the technological level, changes in the inductance and resistance of the stator affect the speed of the motor during production. These motors that do not meet the speed requirements can only be scrapped and a small part of them will be repaired, resulting in relatively large waste and increased costs.

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