KR950021930A

KR950021930A - Motor RPM Compensation Circuit and Method

Info

Publication number: KR950021930A
Application number: KR1019930031925A
Authority: KR
Inventors: 김태경; 구근모
Original assignee: 배순훈; 대우전자 주식회사
Priority date: 1993-12-31
Filing date: 1993-12-31
Publication date: 1995-07-26

Abstract

본 발명은 팬히터에서 시간제어를 하여 송풍모터의 회전수를 조절할때 교류전원이 정격전압보다 낮거나 높게 입력되는 것을 감지하고 저전압 또는 과전압이 입력될 경우에는 통전시간을 변화시켜 모터의 회전수를 보상해줌으로써 연소동작을 안정화시킬 수 있도록 한 정격전압이상시 모터회전수 보상회로 및 그 방법에 관한 것이다.The present invention detects that the AC power is lower or higher than the rated voltage when controlling the rotation speed of the blower motor by controlling the time in the fan heater, and compensates the rotation speed of the motor by changing the energization time when a low voltage or an overvoltage is input. The present invention relates to a motor speed compensation circuit and a method thereof when a rated voltage is exceeded to stabilize a combustion operation.

이러한 본 발명은 전원입력단에서 평활된 전압을 분압하여 마이콤에 입력시키는 정원상태 감지부를 구비하고, 마이콤에서 상기 전원상태 감지부의 출력전압을 정격전압 입력시의 기준전압과 비교하여 교류전압이 저전압 또는 과전압상태로 입력되는지를 판단하며, 교류전원 입력이 저전압상태로 판단되면 정격전압이 입력되는 정상운전시보다 송풍모터의 통전시간은 길게, 오프시간은 짧게 설정하고, 교류전원 입력이 판단되면 정격전압이 입력되는 정상운전시보다 송풍모터의 통전시간은 짧게, 오프시간은 길게 설정하여 송풍모터의 회전수를 보상하게 된다.The present invention includes a garden state detection unit for dividing the smoothed voltage at the power input terminal and inputting it to the microcomputer, and comparing the output voltage of the power state detection unit with the reference voltage at the input of the rated voltage in the microcomputer, the AC voltage is low or overvoltage. When the AC power input is judged to be low voltage state, the energization time of the blower motor is set longer and the off time is shorter than in normal operation where the rated voltage is input.When the AC power input is judged, the rated voltage is inputted. The energization time of the blower motor is shorter and the off time is set longer than during normal operation to compensate for the rotational speed of the blower motor.

Description

Motor RPM Compensation Circuit and Method

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

제2도는 본 발명의 정격전압이상시 모터회전수 보상회로도.2 is a motor speed compensation circuit diagram when the rated voltage or more of the present invention.

Claims

In a blower motor driving circuit in which a photocoupler under the control of a microcomputer is operated to switch AC power supply to a power supply motor, whether a rated voltage is supplied to the blower motor by dividing a smoothed voltage at a power input terminal, A power state detection unit for inputting the microcomputer to check whether the power is supplied; By comparing the output voltage of the power state detection unit with the reference voltage at the rated voltage input, it is determined whether the low voltage or the overvoltage is input, and the microcomputer controls to compensate the rotation speed of the blower motor by changing the energization time according to the thermal power level and the determination result. Motor speed compensation circuit when the rated voltage is abnormal, characterized in that it comprises a.

A blower motor driving method for controlling a rotation speed by varying an energization time of a blower monitor according to a control of a microcomputer, the method comprising: determining whether an AC power source is input in a low voltage or an overvoltage state compared to a rated voltage; If the AC power input is judged to be low voltage, set the energizing time of the blower motor longer and shorter the off time than the normal operation of the rated voltage input.If the AC power input is judged to be overvoltage, The method of compensating the motor speed when the rated voltage is abnormal, characterized in that the blowing time of the blower motor is set to be shorter and the off time is set longer.

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