Hi all. I am working on a project. My servo is the main mechanism of actuation. I am trying to find my power input to the system. So I have a few questions regarding servos.
1) How do you measure the resistance of a servo?
I know there are 3 pins (2 +/- pins that go to a Power supply and a 3rd pin that goes to a μC). When I put the probes of my multimeter on the +/- pins, I get a 300 ohm reading. When I put it on the + and the 3rd pin (one that goes to the microcontroller) I get a gigantic resistance reading in the MΩ range. Both values seems much too large.
2) Another question I have is how do I calculate the power input to my system from the servo? I'm guessing this equation should be something like efficiency of the motor multiplied by the power input to the "motor" (not system). But I am unsure how to determine the efficiency of the servo nor how to determine the power input to the motor.
If anyone has some insight, it would be greatly appreciated.
1) How do you measure the resistance of a servo?
I know there are 3 pins (2 +/- pins that go to a Power supply and a 3rd pin that goes to a μC). When I put the probes of my multimeter on the +/- pins, I get a 300 ohm reading. When I put it on the + and the 3rd pin (one that goes to the microcontroller) I get a gigantic resistance reading in the MΩ range. Both values seems much too large.
2) Another question I have is how do I calculate the power input to my system from the servo? I'm guessing this equation should be something like efficiency of the motor multiplied by the power input to the "motor" (not system). But I am unsure how to determine the efficiency of the servo nor how to determine the power input to the motor.
If anyone has some insight, it would be greatly appreciated.