步进电机28byj48
时间: 2024-06-18 08:03:34 浏览: 15
28BYJ-48步进电机是一种四相五线式步进电机,每个相位的电流约为0.63A,额定电压为DC 5V。它的运行拍数是相数的1倍/2倍,步距角公式是步距角θ=360°/(转子齿数×运行拍数),每个电脉冲信号可以让转子转动一个角度或者前进一步。28BYJ-48在机器人、智能家居、车载控制、安防等领域有广泛的应用[^1]。
下面是28BYJ-48步进电机的控制代码示例,需要先安装RPi.GPIO库:
```python
import RPi.GPIO as GPIO
import time
# 定义IO口
IN1 = 11
IN2 = 12
IN3 = 13
IN4 = 15
# GPIO口初始化
def init_GPIO():
GPIO.setmode(GPIO.BOARD)
GPIO.setup(IN1, GPIO.OUT)
GPIO.setup(IN2, GPIO.OUT)
GPIO.setup(IN3, GPIO.OUT)
GPIO.setup(IN4, GPIO.OUT)
# 步进电机每走一步的对应控制信号
def setStep(w1, w2, w3, w4):
GPIO.output(IN1, w1)
GPIO.output(IN2, w2)
GPIO.output(IN3, w3)
GPIO.output(IN4, w4)
# 步进电机正转函数
def forward(delay, steps):
for i in range(0, steps):
setStep(1, 0, 0, 0)
time.sleep(delay)
setStep(0, 1, 0, 0)
time.sleep(delay)
setStep(0, 0, 1, 0)
time.sleep(delay)
setStep(0, 0, 0, 1)
time.sleep(delay)
# 步进电机反转函数
def backward(delay, steps):
for i in range(0, steps):
setStep(0, 0, 0, 1)
time.sleep(delay)
setStep(0, 0, 1, 0)
time.sleep(delay)
setStep(0, 1, 0, 0)
time.sleep(delay)
setStep(1, 0, 0, 0)
time.sleep(delay)
# 主函数
def main():
init_GPIO()
delay = 0.005
steps = 100
forward(delay, steps)
time.sleep(1)
backward(delay, steps)
GPIO.cleanup()
if __name__ == '__main__':
main()
```