userparms.h

一个可以运行在dsPIC demo 1.1板上的的AC矢量控制源代码

#ifndef UserParms_H
#define UserParms_H

// This is a macro used to convert a floating point value to a
// fixed point fractional value.
#define Q15(X) \
   ((X < 0.0) ? (int)(32768*(X) - 0.5) : (int)(32767*(X) + 0.5)) ;

//**************  Oscillator **************

#define dFoscExt        7372800         // External Crystal or Clock Frequency (Hz)
#define dPLL            8               // PLL ratio
#define dLoopTimeInSec  0.00005          // PWM Period - 50 uSec, 20Khz PWM
#define dDeadTimeSec    0.000002         // Deadtime in seconds
#define	dDispLoopTime	0.100			// Display and button polling loop period in sec

// Derived
#define dFosc       (dFoscExt*dPLL)     // Clock frequency (Hz)
#define dFcy        (dFosc/4)           // Instruction cycle frequency (Hz)
#define dTcy        (1.0/dFcy)          // Instruction cycle period (sec)
#define dDeadTime   (int)(dDeadTimeSec*dFcy) // Dead time in dTcys

#define dLoopInTcy  (dLoopTimeInSec/dTcy)   // Basic loop period in units of Tcy

// Number of control loops that must execute before the button and display
// routine is executed.
#define	dDispLoopCnt	(dDispLoopTime/dLoopTimeInSec)

//**************  Motor Parameters **************
#define diPoles         1       // Number of pole pairs
#define diCntsPerRev    2000    // Encoder counts per revolution
#define diNomRPM        3600    // Name Plate Motor RPM
#define dfRotorTmConst  0.078   // Rotor time constant in sec, from manufacturer

//************** Open Loop **************
#define dqOL_VelMech    2150    // 900 RPM for test

//************** Measurement **************
#define diIrpPerCalc    40      // PWM loops per velocity calculation

//************** PI Coefficients **************

// This definition can be used to bypass the velocity control loop.
// If TORQUE_MODE is defined, then the potentiometer demand value
// is passed directly to the Q (torque) control loop.
//#define	TORQUE_MODE

//******** D Control Loop Coefficients *******
#define     dDqKp           Q15(0.3125);     // 
#define     dDqKi           Q15(0.0625);     //        
#define     dDqKc           Q15(0.0625);     // 
#define     dDqOutMax       Q15(0.7071);     //

//******** Q Control Loop Coefficients *******
#define     dQqKp           Q15(0.3125);     // 
#define     dQqKi           Q15(0.0625);     // 
#define     dQqKc           Q15(0.0625);     // 
#define     dQqOutMax       Q15(0.7071);     //

//*** Velocity Control Loop Coefficients *****
#define     dQrefqKp        Q15(0.375);    	 // 
#define     dQrefqKi        Q15(0.0625);     // 
#define     dQrefqKc        Q15(0.0625);     // 
#define     dQrefqOutMax    Q15(0.5);        // 

//************** ADC Scaling **************
// Scaling constants: Determined by calibration or hardware design. 

#define     dqK             Q15(0.5);     // 
#define     dqKa            Q15(0.5);     // 
#define     dqKb            Q15(0.5);     //  

//************** Field Weakening **************

// Field Weakening constant for constant torque range
#define     dqK1            Q15(0.114);       // Flux reference value

#endif