# US 10,483,883 B2 · Driving control method for BLDC motor

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- Number: US 10,483,883 B2
- Document ID: US10483883B2
- Status: Granted
- Kind: B2
- Application number: 15/272,229
- Filed: 2016-09-21
- Published: 2017-03-23
- Granted: 2019-11-19
- Earliest claimed: 2015-09-22
- Assignees: Coavis
- Applicants: Coavis
- Inventors: Suk Min Yoon; Young Sub Jang
- Web page: https://patentgrep.com/patent/US10483883B2

## CPC

- H02P 6/20: Arrangements for starting (H02P6/08 takes precedence)
- H02P 6/24: Arrangements for stopping
- H02P: CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS

## Abstract

Provided is driving control method of Brushless DC (BLDC) motor, including: a step of initial driving command input, initially inputting a driving command to the BLDC motor; a step of the first position alignment, compulsively aligning rotor of the BLDC motor at a predetermined position; a step of forced driving, compulsively driving the rotor of the BLDC motor compulsively aligned by accelerating the rotor of the BLDC motor; a step of feedback control, performing feedback control of the BLDC motor; a step of driving off, inputting a stop command to the BLDC motor; and a step of the second position alignment, compulsively aligning the rotor of the BLDC motor at the predetermined position again.

## Claims

### Claim 1

A driving control method of a BLDC (Brushless DC) motor, comprising:
a step of initial driving command input, comprising initially inputting a driving command to the BLDC motor;
a step of first position alignment, comprising compulsively aligning a rotor of the BLDC motor at a predetermined position;
a step of forced driving, comprising compulsively driving the rotor of the BLDC motor compulsively aligned by accelerating the rotor of the BLDC motor;
a step of driving off, comprising inputting a stop command and blocking current to the BLDC motor; and
after the stop command, a step of second position alignment comprising compulsively aligning the rotor of the BLDC motor at the predetermined position of the step of the first position alignment again using residual current of a BLDC driver.

### Claim 2 (depends on 1)

The method of claim 1, repeatedly performing the step of forced driving, the step of driving off, and the step of the second alignment step, whenever the driving command is input to the BLDC motor after performing the step of the second position alignment.