Different stepper motors require different drivers. The number of phases, power supply method, voltage, and current of the driver must meet the needs of the stepper motor.
Important Notes
1. Different specifications of stepper motors require corresponding drivers. The number of phases, energizing method, voltage, and current of the driver must meet the needs of the stepper motor. The drive power supply of a stepper motor mainly consists of three parts: a pulse generator, a pulse distributor, and a pulse amplifier (also called a power amplifier). The microcontroller sends commands to control the stepper motor through the driver. The pulse generator is a pulse signal generator whose pulse frequency can be continuously varied from a few hertz to tens of kilohertz. The pulse distributor applies pulses to the power amplifier of each phase winding according to a certain logical relationship, so that the motor runs in a certain way, realizing forward, reverse, and positioning.
2. Stepper motor control methods: Taking a three-phase stepper motor as an example, there are other methods besides the three-phase three-step method. A three-phase six-step method can also be implemented using software. The step angle of the three-phase six-step method is half that of the three-phase three-step method. For example, the step angle of the three-step method is 30 degrees, while the step angle of the six-step method is 15 degrees. This method of improving the accuracy of the step angle is called microstepping.
3. The instructions used in the code above are for the STC89C52 microcontroller. If you need to use other chips, please make the changes accordingly.
Implementation code
#include
#include
#define ucunsignedchar
#define uiunsignedint
uccodezz[4]={0x01,0x02,0x04,0x08};//Rotate the table forward,
uccodefz[4]={0x08,0x04,0x02,0x01};//Reverse the table,
uik,z,y;
void delay(uiz) // z milliseconds
{
uix,y;
for(x=z;x>0;x--)
for(y=125;y>0;y--);
}
/******Forward rotation*****************/
void zz() // Phase sequence is A->B->C
{
for(i=0;i<4;i++)
{
P0 = zz[i];
delay(100); // Rotate one step angle every 100ms
}
}
/******Reversal*****************/
void fz() // Phase sequence is C->B->A
{
for(i=0;i<4;i++)
{
P0 = fz[i];
delay(100); // Rotate one step angle every 100ms
}
}
void main() // Rotates clockwise for 5 seconds, then counterclockwise for 5 seconds before stopping.
{
while(1)
{
ZZ();
delay(5000);
fz();
delay(5000);
while(1);
}
}
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