2006-09-02 08:29:39 · 3 answers · asked by Bobby 1 in Science & Mathematics ➔ Engineering
Since there seems to be a formula for everything there is probably one around somewhere. You would be hard pressed to come up the data necessary to apply it and even then it would be very error prone. When electronic motor drives require this and similar types of data a signal is pulsed into the motor windings and the data is compiled from the resulting reflected wave. This test includes the properties and length of the wiring to the motor which makes a difference in its inductance as seen by the drive.
Inductance of a coil is calculated by using the properties of the of the core and the number and spacing of windings but a motor needs to consider rotor or armature mass and composition. An extra bolt in the frame or a worn bearing would make a difference.
If you have a means of measuring Time Constant L= R*TC
2006-09-02 15:41:00 · answer #1 · answered by Buffertest 3 · 0⤊ 0⤋
U need to calculate it by measuring the current flow with the correct applied voltage. R=e/i
2006-09-02 15:55:42 · answer #2 · answered by JOHNNIE B 7 · 0⤊ 0⤋
you dont have enough information for that.what kind of motor?
2006-09-02 18:15:24 · answer #3 · answered by nima_iran_1985 3 · 0⤊ 0⤋