void duo_ji(void)
{ switch(kx)
{
case 0: PWMDTY45=angle[0];speed=1;break;
case 1: PWMDTY45=angle[1];speed=1;break;
case 2: PWMDTY45=angle[2];speed=1;break;
case 3: PWMDTY45=angle[3];speed=1;break;
case 4: PWMDTY45=angle[4];speed=2;break;
case 5: PWMDTY45=angle[5];speed=1;break;
case 6: PWMDTY45=angle[6];speed=1;break;
case 7: PWMDTY45=angle[7];speed=1;break;
case 8: PWMDTY45=angle[8];speed=1;break;