Re: loaded torque calculations for robot locomotion



I calculated the torque using
T = F * r
F= force of 5 pounds (weight+ frictional force )
r= radius of the wheel (0.75 inch)

Thus thats equal to 3.75 lb-in convert that to ounces 60 oz-inch.

The 350rpm was chosen for ease of calculation.

Since motors at their operating efficency produce 10-30% of the rated
torque the above motor theorectically will not suffice.

I have considered other senarios as well where i could possibly
overload the motors but since i will have to run the robot for 3 mins
countinously i believe thats going to be too harsh on those motors.

.



Relevant Pages

  • Re: Wheel motors - too good to be true?
    ... Refreshing to see a car maker touting actual performance advantages, ... Motors tend to have torque proportional to their volume. ... I confess to being motor-ignorant and mostly taking the PML ...
    (sci.electronics.design)
  • Re: comparative efficiency test
    ... The torque of any motor depends on speed. ... DC motors have a characteristic curve. ... The torque depends on the quality of the magnets. ... Nice strong magnets produce high torques and very high speeds ...
    (sci.physics)
  • Re: Torque on twin engine planes?
    ... | I know that the common way to counteract torque in twin prop (i.e. the ... Well, short of a tail rotor, that's the only way to counteract the ... but if you can minimize them simply by having one engine run ... For brushed electric motors, all you do is swap the wires, and that's ...
    (rec.models.rc.air)
  • Re: DC Motors
    ... was a torque motor but not sure. ... for DC motors can I get away with changing the voltage to a lower ... If you already have speed control, ...
    (sci.electronics.basics)
  • Re: Wheel motors - too good to be true?
    ... Phil Hobbs wrote: ... Motors tend to have torque proportional to their volume. ... As you increase the diameter, you win linearly because the torque is force X distance, and linearly again because you can pack more wires into the circumference of the rotor. ... Disadvantage #2 is that they have terribly high unsprung mass, which makes for very poor handling, especially over bumps. ...
    (sci.electronics.design)