diff --git a/app/by_motion.c b/app/by_motion.c
index 42dbd70..c12c84f 100644
--- a/app/by_motion.c
+++ b/app/by_motion.c
@@ -178,13 +178,15 @@ void by_motion_init(void)
   DRV_ENABLE();
 
   // 上电回零
-  by_motion_set_speed_m1(-20);
+  by_motion_set_speed_m1(-30);
   while (SET == gpio_input_data_bit_read(GPIOB, GPIO_PINS_4)) {
     // lwprintf("%f, %f, %f\r\n", param_m1.real_speed, param_m1.target_speed, param_m1.out_pwm);
     // 等待复位
   }
   by_motion_set_speed_m1(0);
   by_motion_set_distance2(100, 30);
+  delay_ms(2600);
+  by_motion_set_distance2(0, 30);
 }
 
 void by_motion_run(void)