agreatstar
Junior Member level 2
I am making a robotic football goalkeeper. My application requires my 15kg human dummy(6ft in height, MI=20kgm^2) to turn by a specified angle (which can be max 90deg) in 0.5 sec. From acceleration and deceleration characterisitics, I have calculated my accelerating torque to be 450Nm, and decelerating torque to be 900Nm assuming that I will accelerate the dummy for 0.3 sec, and decelerate for 0.2s. One of my vendors is suggesting a 3HP induction motor for the application and it does satisfy the requirements. I am not planning to use a servo because of budgetary constraints. My question is will induction motor be able to turn 90deg in 0.5s at such high load? Isnt the starting time for induction motor high because of its own inertia? Also is it recommended to use induction motor for such a frequent start-stop operation(start and stop in 0.5s)?
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Yes, I want the motor to stop after turning a specific angle. The angle of turn will be max 90 deg. It can be lower than that sometimes. Once the motor turns by specified angle(say 90), it has to stay there for next 3-4 secs and reset to initial position by rotating as much angle in reverse direction (-90deg).
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Yes, I want the motor to stop after turning a specific angle. The angle of turn will be max 90 deg. It can be lower than that sometimes. Once the motor turns by specified angle(say 90), it has to stay there for next 3-4 secs and reset to initial position by rotating as much angle in reverse direction (-90deg).