?? 3im_vf.asm
字號:
;*******************************************************************************
;PROGRAM : V/F control of 3-Phase Induction Motor
;MICROCONTROLLER : PIC18Fxx31
;*******************************************************************************
;*******************************************************************************
;AUTHOR : Jon Burroughs,
; : based on V/f code by Padmaraja Yedamale
; : Microchip Technology Inc
;DATE : 2/11/04
;Version : V1.0
;*******************************************************************************
;Description:
;
;This code implements V/f control of a three-phase induction motor using
;the PIC18F4431 Microcontroller. This code accompanies the application note
;AN890 "3-Phase AC-Induction Motor Control Using the PIC18F4431"
;
;By varying the frequency of supply to the Induction motor we can control the
;speed of the motor. But by varying only frequency, changes the flux
;also which results in changes in torque. So to keep the flux, hence
;torque, the magnitude of voltage applied also needs to be changed. Or in other
;words, the ratio of V/F needs to be kept constant throughout the
;operating range.
;
;*******************************************************************************
; Software License Agreement
;
; The software supplied herewith by Microchip Technology
; Incorporated (the "Company") for its PICmicro
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