KR940016086A

KR940016086A - Servo control method of motor using microcomputer

Info

Publication number: KR940016086A
Application number: KR1019920027535A
Authority: KR
Inventors: 김철홍
Original assignee: 윤종용; 삼성전자 주식회사
Priority date: 1992-12-31
Filing date: 1992-12-31
Publication date: 1994-07-22
Also published as: KR0183673B1

Abstract

본 발명은 영상기록 및 재생장치에 있어서, 마이콤은 이용한 소프트웨어 서보방법에 관한 것으로, 종래의 드럼모터나 캡스턴모터의 서보시스템용 회로를 대체하면서도 기능적으로 보다 향상된 소프트웨어 서보제어방법을 제공함에 그 목적이 있다. 이를 위해 드럼위상오차계수를 산출하는 드럼위상오차측정과정과, 드럼속도오차측정과정과, 드럼위상오차계수와 드럼속도오차를 합한 값을 드럼속도필터처리를 하여 두 오차가 보상된 드럼모터의 PWM신호를 출력하는 드럼모터구동신호 출력과정을 통하여 드럼모터를 제어하고, 캡스턴 위상오차계수를 산출하는 캡스턴위상오차측정과정과, 캡스턴속도오차측정과정과, 위상오차계수와 속도오차를 합한 값을 캡스턴속도필터처리를 하여 두 오차가 보상된 캡스턴모터의 PWM신호를 출력하는 캡스턴모터구동신호 출력과정을 포함하고, 본 발명은 개발기간의 단축, 제어성능의 향상, 간편한 동작 테스트 가능, 시스템 변경에도 탄력적인 대응이 가능하며, 신뢰성이 향상되고 소형경량화, 생전력화가 가능한 효과가 있다.The present invention relates to a software servo method in a video recording and reproducing apparatus, and to provide a software servo control method which is functionally improved while replacing a circuit for a servo system of a conventional drum motor or capstan motor. have. For this purpose, the drum phase error measurement process that calculates the drum phase error coefficient, the drum speed error measurement process, and the drum phase filter process the sum of the drum phase error coefficient and the drum speed error are processed by the drum speed filter. Drum motor drive signal outputting process to control the drum motor, capstan phase error measurement process to calculate the capstan phase error coefficient, capstan speed error measurement process, the sum of the phase error coefficient and the speed error capstan Capstan motor drive signal output process that outputs PWM signal of capstan motor compensated for two errors by speed filter processing, and the present invention is shortened development period, improved control performance, simple operation test, flexible to system change It is possible to cope with phosphorus, and it has the effect of improving reliability, miniaturization, and power saving.

Description

Servo control method of motor using microcomputer

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

제1도는 본 발명의 실시예 필요한 장치도, 제2도는 본 발명의 입출력신호의 파형도, 제3도는 트래킹오차 측정방법의 순서도, 제4도는 테이프 속도모드 결정방법의 순서도.FIG. 1 is a device diagram of an embodiment of the present invention, FIG. 2 is a waveform diagram of input / output signals of the present invention, FIG. 3 is a flowchart of a tracking error measurement method, and FIG. 4 is a flowchart of a tape speed mode determination method.

Claims

In the software servo method for normal playback of a VCR, the digital phase processing (DSP type) drum phase filter processing is performed by comparing the difference between the trigger time of the output signal (DPG signal) of the phase generator of the drum motor and the trigger time of the reference signal. A drum phase error measurement process for calculating a drum phase error coefficient, a drum speed error measurement process taking a difference between a period of an output signal (DFG signal) of the frequency generator of the motor and a period of a reference signal as a drum speed error; The drum motor is processed through a drum motor drive signal output process that outputs a PWM (pulse width modulation) signal of the drum motor, in which the two errors are compensated by processing a drum speed filter of the sum of the drum phase error coefficient and the drum speed error. Capstan phase error measurement process for calculating the capstan phase error coefficient through the cycle of the output signal (CFG signal) of the frequency generator of the capstan motor and the reference signal. Pulse width modulation of capstan motor of capstan motor which compensated the above two errors by performing capstan speed error measurement process that takes the difference of period as capstan speed error and DSP type capstan speed filter process of the sum of phase error coefficient and speed error ) Capstan motor for outputting the signal Software servo method for normal playback characterized in that the capstan motor is controlled through the signal output process.

In the software servo method for recording the VTR, a drum phase error, which is a difference between the trigger time of the output signal (DPG signal) of the phase generator of the drum motor and the trigger time of the vertical synchronization signal, is converted into a digital signal processing (DSP type) drum. Drum phase error measurement process of calculating the drum phase error coefficient by performing phase filter processing, and drum speed error measurement taking the difference between the period of the output signal (DFG signal) and the period of the reference signal of the frequency generator of the motor as the drum speed error And a drum motor drive signal output process of outputting a PWM (pulse width modulation) signal of the drum motor, in which the two errors are compensated by processing the drum speed filter of DSP type by adding the drum phase error coefficient and the drum speed error. Control the drum motor, and delay the delay time by the PG delay time from the trigger time of the reference signal synchronized with the vertical synchronization signal. A control pulse output process for outputting control pulses in synchronization with the trigger time, the difference between the cycle of the output signal (CFG signal) of the frequency generator of the capstan motor and the period of the reference signal; Capstan motor is controlled through the capstan motor drive signal output process of outputting the PWM (Pulse Width Modulation) signal of the capstan motor compensated for the speed error angle by processing the speed error of the capstan speed filter of DSP type. Software servo method for playback.

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