Good day,
i am building a motor driven winch. I want to speed control the motor. I also want to attach an electromagnetic brake to the motorshaft. If I want to lower different loads, I see the problem when opening the brake, the load will just fall down for a while until my controller has corrected the speed. Is there a motorchoice or controlstategy to avoid this behaviour, so that after releasing the brake, a desired velocity is possible.
The motor WILL be "pulled down by the load". PID is used to control the speed of descent, possibly by back driving the motor. This is called active braking.
You could use a worm gear drive, which cannot be back driven by the load.