METHOD FOR CONTROLLING CONSTANT SPEED OF MOTOR

• Main Author: MIN, GYEONG IL
• Format: Patent
• Language: English; Korean
• Published: 24.06.2002
• Edition: 7
• Subjects: CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION

PURPOSE: A method for controlling a constant speed of a motor is provided to maintain constantly a rotary speed of a motor by compensating speed errors generated from the motor. CONSTITUTION: A micro computer performs an initialization process and turns off a switch between a prediction compensation portion and the second synthesis portion(ST1,ST2). A motor is driven according to the first control signal(ST3). The motor approaches a constant speed(ST4). The prediction compensation portion stores speed errors from current speed signals of an analog/digital conversion portion and time points for generating the speed errors(ST5 to ST7). The prediction compensation portion obtains a mean value of the speed errors and a mean value of the time points for generating the speed errors(ST8). The switch is turned on(ST9). A motor driving portion drives a drum motor according to the second control signal(ST10). The drum motor is driven with the constant speed(ST11). 본 발명은 모터의 정속도 제어방법에 관한 것으로, 회전측에 대해 질량분포가 비대칭적인 기구물이 부착된 모터를 정상상태에 도달할 때까지 구동하고, 정상상태에의 도달 후 속도오차 보상을 위한 예측보상치와 예측시점을 구하며, 이 시점에서 상기 예측보상치에 따라 예측시점에서 모터를 보상제어하여 회전속도를 정속도로 유지되도록 함으로써, 비대칭정도가 심하고 회전속도가 고속이더라도 모터를 정속도로 구동할 수 있고 그리고 속도보상이 빨라지도록 한 것이다.