KR960019948A

KR960019948A - Reference speed control device of servo motor

Info

Publication number: KR960019948A
Application number: KR1019940030660A
Authority: KR
Inventors: 권택준; 이병석
Original assignee: 석진철; 대우중공업 주식회사
Priority date: 1994-11-21
Filing date: 1994-11-21
Publication date: 1996-06-17

Abstract

본 발명은 서보모터의 기준속도 제어장치에 관한 것으로, 외부로부터 입력된 아날로그 전압 형태의 기준속도 신호를 1체배하여 출력하는 1체배 증폭부(12)와; 외부로부터 입력된 아날로그 전압 형태의 기준속도신호를 n체배하여 출력하는 n체배 증폭부(13); 제어하고자 하는 속도가 저속일 경우에는 n체배 증폭부(13)로 절환되는 절환부(14); 상기 1체배 증폭된 아날로그 전압 헝태의 기준속도신호 또는 n체배 증폭된 아날로그 형태의 기준 속도신호를 디지탈 형태의 기준속도신호로 변환하여 출력하는 A/D컨버터부(16) 및; 상기 디지탈 형태의 신호로 변환된 기준속도신호를 입력받아 최종 기준속도신호로 변환하여 출력하는 마이크로 프로세서(18)을 포함하여 구성되어, 제어하고자 하는 모터의 회전속도가 저속일 때에는 상기 n체배 증폭회로를 동작시켜 모터의 회전 속도를 제어하고자 하는 범위로 넓힘으로써 극저속에서도 모터의 회전속도를 보다 정밀하게 제어할 수 있는 것이다.The present invention relates to a reference speed control device for a servo motor, comprising: a multiplication amplifier (12) for multiplying and outputting a reference speed signal in the form of an analog voltage input from the outside; An n-multiplying amplifier 13 for n-multiplying and outputting a reference speed signal in the form of an analog voltage input from the outside; A switching unit 14 switched to an n-multiplying amplifier 13 when the speed to be controlled is low; An A / D converter unit 16 for converting the reference speed signal of the multiply amplified analog voltage state or the reference speed signal of n-multiplied amplified analog form into a digital reference speed signal and outputting the converted reference speed signal; And a microprocessor (18) for receiving the reference speed signal converted into the digital signal and converting the signal into a final reference speed signal. By operating the motor to widen the range to control the rotational speed of the motor can be more precisely controlled the rotational speed of the motor at very low speed.

Description

Reference speed control device of servo motor

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제1도는 서보모터 속도 제어장치의 개략적인 구성도,1 is a schematic configuration diagram of a servo motor speed control device,

제2도는 종래의 기준속도신호 입력 처리부의 개략적인 구성도,2 is a schematic configuration diagram of a conventional reference speed signal input processing unit;

제3도는 본 발명에 따른 기준속도신호 입력 처리부의 개략적인 구성도이다.3 is a schematic configuration diagram of a reference speed signal input processing unit according to the present invention.

Claims

A reference speed signal input processing unit 10 for converting and outputting a reference speed signal in the form of an analog voltage input from the outside into a final reference speed signal in the digital form; A speed controller 20 for comparing the final reference speed signal with a feedback rotation speed signal to determine a current amplitude for acceleration or deceleration and outputting a current reference signal; A current controller 30 which outputs an inverter control signal by comparing the current reference signal with a feedback current signal; An inverter unit 40 generating and supplying a sinusoidal wave current of an arbitrary frequency according to the inverter control signal by PWM control; A motor 50 operated by receiving the sinusoidal current; An encoder (60) for rotating speed and position information of the motor (50); In the servo motor speed control device comprising the speed detection unit for receiving the rotation speed and position information and outputs from the speed control unit 70 as a digital speed signal, the reference speed signal input processing unit 10, A multiplication amplifier 12 for multiplying and outputting a reference speed signal in the form of an analog voltage input from the outside; An n-multiplying amplifier 13 for n-multiplying and outputting a reference speed signal in the form of an analog voltage input from the outside; A switching unit 14 switched to an n-multiplying amplifying unit when the speed to be controlled is low; An A / D converter unit (16) for converting the reference speed signal in the form of the multiply amplified analog voltage or the reference speed signal in the form of n-multiplied amplified into a reference speed signal in the digital form; And a microprocessor (18) for receiving a reference speed signal converted into the digital signal and converting the reference speed signal into a final reference speed signal.

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