Rotational Direction Control
- Normal Mode Control
The table below shows normal control mode to control flow of current from battery. ("PWM"in table indicates PWM control based on torque sensor data)NORMAL CONTROL MODESteering Condition (1) FET FET FET FET Motor Operation Steering To Right ON OFF OFF PWM Operates in direction steering to the right Straight Ahead OFF OFF OFF OFF Stops Steering To Left OFF ON PWM OFF Operates in direction steering to the left (1) For FET numbers (1-4) locations, refer to Fig 1. - Return Control Mode
Return control mode improves steering return characteristics. ("PWM" in table denotes PWM control based on torque sensor data while "PWM-r" PWM control based on rotation sensor).RETURN CONTROL MODESteering Condition (1) FET FET FET FET Return From Right Steering To Straight Ahead PWM-r OFF OFF PWM Return From Left Steering To Straight Ahead OFF PWM-r PWM OFF (1) For FET numbers (1-4) locations, refer to Fig 1 - Damper Control Mode
The damper mode control which improves convergence of steering, is performed with damper mode signals from control unit. In this mode, a short current circuit is formed on motor side by turning off FET (1) and (2), and n FET (3) and (4), which suppresses returning speed of steering. See NORMAL CONTROL MODE . For FET numbers (1-4) locations, Fig 1.