Open loop power

8 years 7 months ago #29526831 by ScottyH
Open loop power was created by ScottyH
I am controlling a Roboteq with an analog 0-5V open loop. As noted this is a power command. An increase in voltage increases both speed and power. What is the ratio? How do I get good power at low speed. Or should this project be a Toque mode?

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8 years 7 months ago #29526855 by ScottyH
Replied by ScottyH on topic Re:Open loop power
More information
Drive HBL2350
Brushless Servo Motor

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8 years 7 months ago #29526861 by roboteq
Replied by roboteq on topic Re:Open loop power
In open loop, the power is the PWM ratio. At 50% power, this is the equivalent to giving half the battery voltage to the motor.

If you want power at very low speed, then the best is to add encoders on the motor in order to sense speed and run in closed loop speed mode.

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