Nice calculation sheet Clyde.
Very thorough, taking into account the temperature-dependance of the resistance and also the torque constant. I don't see it much being used and I am glad to see I am not the only one.
Looks a bit like my paper...
I could not open the enclosed file.
What you may want to do is measure the current in the setup you have and multiply that with the torque constant to get the torque.
Also measure voltage and resistance (when the motor is not connected).
Now do: voltage - current * resistance = Eelectr =...
A different motor winding means that the torque constant (torque that you get per Ampere current) is different. The overall power rating will be the same so this means the one motor will have higher torque/lower speed and the other one lower torque/higher speed.
If you know very little other...
Regarding your question:
2. How does a trapezoidal winding look like and how does a sinusoidal one look like ?
See page 25 until 29 of the book "Electrical drives for precision engineering designs" from prof.Compter at http://www.specamotor.com/en/freebook.php
The book is free of charge.
Also...
Not necessaraly so. You have to limit the starting-current with an amplifier. So you don't have to burn that energy with resistors.
The motor rating is 0.55 kW, 1400 rpm, 24 V DC. That is a fairly small motor which you can simply hook to an amplifier without external resistance (use motor with...
The final temperature and thus the insulation class that you need is determined by the time that you need the extra torque and the thermal resistance of the motor in question.
Different motor needs different insulation class.
If the motor vendor has recommended the starting current as 5 times...
If you know the torque and speed you known you can go to http://www.specamotor.com and fill those in and get a list of motors from over 20 manufacturers that will suffice.
(With and without additional reduction).
This will save you lots of time browsing through websites and catalogs.
Edward...
I agree with Curt that brushless DC and synchronous AC motors are primarily the same. The difference is the winding-configuration, a synchronous AC motor has a sinusoidale winding (the same as an asynchronous motor) and a brushless DC has a trapezoidal winding. The stator may be the same, its...
I agree with Bill, I also recommend a threaded shaft.
When you use a shaft with lead 1/5 '' your specifications become:
Torque = 50 lb *1/5 '' = 10 lb.in
Average speed = 2 ft * 12 = 24 inch in 10 seconds or 720 rpm with lead 1/5''.
In the specAmotor site (www.specAmotor.com) you can use those...
