KR940015048A

KR940015048A - Motor control device and motor restraint detection method of washing machine

Info

Publication number: KR940015048A
Application number: KR1019920024060A
Authority: KR
Inventors: 성영주; 유현수
Original assignee: 이헌조; 주식회사 금성사
Priority date: 1992-12-12
Filing date: 1992-12-12
Publication date: 1994-07-20

Abstract

본 발명은 세탁기의 모터 구속감지 방법에 관한 것으로, 종래에는 모터의 속도신호를 서브 마이크로 컴퓨터에서 감지하여 모터 구속여부를 판단한 후 메인 마이크로 컴퓨터에서 메시지를 보내 후속조치를 취하게 함으로써 시간지연으로 인해 세탁기의 안정성이 저하되는 문제점이 있었다.The present invention relates to a motor restraint detection method of a washing machine. In the related art, a speed signal of a washing machine is detected by a sub-microcomputer to determine whether the motor is restrained, and then a message is sent from the main microcomputer to take a follow-up action. There was a problem that the stability of the.

따라서 종래의 문제점을 해결하기 위하여 본 발명은 BLDC모터의 속도신호를 직접 입력받은 후 RPM을 측정하여 모터구속 여부를 감지하므로써 빠른 조치를 취하여 세탁기의 안전성을 도모하도록 한 효과가 있다.Therefore, in order to solve the conventional problems, the present invention has an effect of taking a quick action by detecting the speed of the motor after directly receiving the speed signal of the BLDC motor to detect the motor restraint to promote the safety of the washing machine.

Description

Motor control device and motor restraint detection method of washing machine

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제3도는 본 발명 세탁기의 모터제어장치 구성도,3 is a configuration diagram of a motor control apparatus for a washing machine of the present invention;

제4도는 제3도에 따른 출력 파형도,4 is an output waveform diagram according to FIG.

제5도는 본 발명에 있어서 속도감지 방법에 대한 흐름도,5 is a flowchart illustrating a speed sensing method in the present invention;

제6도는 본 발명에 있어서 모터 회전수 제어에 대한 과정도,6 is a process diagram for controlling the motor speed in the present invention,

제7도는 본 발명 세탁기의 모터 구속감지 방법에 대한 흐름도.7 is a flow chart for the motor restraint detection method of the washing machine of the present invention.

Claims

The main microcomputer 1 for controlling the entire stroke of the washing machine, the position sensing unit 12 for sensing the rotational position of the BLDC motor 11 rotating according to the drive signal of the inverter 10, and the position sensing unit ( A three-phase waveform generator 13 for generating a three-phase signal according to the position signal of 12) and a speed signal according to the position signal of the position branch 12 to detect the main microcomputer 1 and the sub-microcomputer. The PWM is generated by the AND gate 15 and the base driver 16 in accordance with the reference voltage Vref of the speed signal generator 17 generated by 19 and the sub-microcomputer 19 which controls the speed according to the speed command. And a protection circuit unit (18) which detects an overcurrent flowing in accordance with the operation of the inverter (10) and protects each unit.

The first step of calculating the RPM by setting the revolution per minite (RPM) according to the water level and course and transmitting the RPM data according to the water level and the predetermined time after counting the speed signal of the motor, and the calculation in the first step If the RPM is greater than or equal to the specified RPM, the number of times is counted and the prescribed number is checked. The motor restraint detection method of the washing machine, characterized in that it comprises a third step of determining that the motor restraint, and if the predetermined number or more is determined to be normal.

The method of claim 2, wherein the main microcomputer (1) directly receives the speed signal generated by the BLDC motor (11) to determine whether the motor is restricted.

※ Note: The disclosure is based on the initial application.