Link between motor ratio and PWM #1520
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Hello, I am currently working on Bolt based UAV with the attitude firmware unchanged (tuned, but no structure changes) and I am trying to build a model of my system. To do so I am currently doing system identification of thrust and torque coefficient of my motor+propeller. I plan to use the Tyto Robotics 1585 thrust stand (https://www.tytorobotics.com/pages/series-1580-1585). With this thrust stand I would be able to send PWM ratios and measure RPM, thrust and torque of my thruster (motor+propeller). With those measures I would be able to identify the missing coefficients. My question is: If yes, I could then convert motor ratio to to RPM and then thrust and torque produced by my thruster in my model. If no, then do someone has a sort of conversion formula to do so ? (If someone is interested by the result of system identification I could post the results here (if the process is successful), the UAV is equipped with Gemfan 65mm -1.5mm propeller and Nin v2 1203pro-5500KV Flywoo motors). Thanks in advance ! |
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Hi Gus, For brushless motors the "battery voltage compensation function" in not active so the output is fully linear, INT16_max/2 -> 50% motor signal output. Please share the result when you have it! |
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Hi Gus,
For brushless motors the "battery voltage compensation function" in not active so the output is fully linear, INT16_max/2 -> 50% motor signal output.
Please share the result when you have it!