diff --git a/app/by_motion.c b/app/by_motion.c
index 1e68553..7312a57 100644
--- a/app/by_motion.c
+++ b/app/by_motion.c
@@ -116,7 +116,7 @@ void by_motion_set_distance2(float distance, int16_t speed)
 
   if (5.0 >= position_abs) {
     position_abs = 0;
-    by_motion_set_speed_m1(-4);
+    by_motion_set_speed_m1(-10);
     motion_busy_flag  = 1;
     motion_reset_flag = 1;
     LOGD("RESET position_abs = %f\r\n", position_abs);
@@ -171,8 +171,7 @@ void by_motion_init(void)
   DRV_ENABLE();
 
   // 上电回零
-  DWT_Delay(1000000);
-  by_motion_set_speed_m1(-4);
+  by_motion_set_speed_m1(-10);
   while (SET == gpio_input_data_bit_read(GPIOB, GPIO_PINS_3)) {
     // 等待复位
   }