Low PWM value with High Torque

[yu_buffon]

Hi there,

I am using MDS40A motor driver to drive a power window motor. I am using PWM generated by Arduino to control the speed of the motor. As I use lower value of PWM to get slower speed (the current gets reduced as well), the torque of the motor is drastically reduced. I want to decrease the motor speed without losing the maximum torque. Can anyone help me on this?

[yonghui]

if u dont wan to decrease the torque, u should not reduce the pwm duty cycle. if u wan to reduce the rpm and get higher torque, u will need gear.
i think power window motor is very slow already, its driven by worm gear.