Mechanics and Construction > Mechanics and Construction
How to disable torque/acceleration limits on BLDC motor?
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Rollsizzlebeef:
I am trying to drive a wheel with a brushless DC motor controlled by an ESC connected to an Arduino. When there is no load on the motor I am able to run the motor fine, so I know the Arduino program and wiring works. However, once I attach the wheel I want to use, the motor (not the ESC) rotates the wheel a little, starts beeping, and shuts off. The wheel should be well within the torque range of the motor. The motor does this if I also program a large step input for speed, so I think this is some kind of safety feature. Has anyone heard of anything like that? How do I control this motor properly?
Link to motor: https://hobbyking.com/en_us/trackstar-1-8th-2050kv-brushless-sensorless-motor.html#qa[bW9kZT03JnBhZ2U9MSZxdWVzdGlvbl9zZWFyY2hfY29udGVudD0=]
Link to ESC: https://www.amazon.com/dp/B08HWQ58QX?psc=1&ref=ppx_yo2_dt_b_product_details
mklrobo:
8) excelsior!! 8)
Hello! I reviewed the info on your motor;
" The Turnigy TrackStar Sensorless Brushless Motors offer outstanding performance at an incredible price!
Featuring a quality CNC motor can, hand-wound high purity copper windings and powerful sintered neodymium magnets, you wont find a better priced motor of this caliber anywhere else!
The Turnigy TrackStar brushless motors make a great upgrade for 1/8th short course trucks, monster trucks, buggies or anything else that uses 42 size motors. "
According to the advertisement, I would think the motor would have no problem with the application you are trying
to do. However, " there is many a slip, between the cup and the lip". :'(
What I am saying, is consider the following;
1> review the DC power supply you are using - will it deliver the required amps, and more? ;)
2> experiment with loads on the wheel with the step programming to find out the parameters of
what might be going on. - save the data, as this will help you navigate problems in the future. :-[
3> try a gear down transmission - the motor is rated for running fast, which is great, but may not
deliver the torque advertised. (reviews for the motor are great IF you have a RC boat) :-X
I went through the internet briefly looking for reviews of the motor, and found great reviews for RC boats,
but not any for trucks or wheeled vehicles. :-\
Good luck with your project! ;)
see you same robot time, same robot channel! 8)
mklrobo:
8) excelsior! 8)
Hello again! ;D
Another tactic your could do, is to buy a truck with the motors already on it; take them
off and use those on your project! Sounds crazy, :o I realize, BUT, you know those
motors work, AND, as cheap as the RC vehicle get, you probably will pay almost the
same price! ;)
Good luck with your project!! see you :) same robot time, same robot channel!! :)
artbyrobot1:
I am not aware of any feature of motors that would have them beep and turn off. I thought they just have windings inside. The ESC sounds like the culprit here to me. I don't think motors have built in logic of any sort.
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