And that means that at 500 updates per second the Current for the VESC bounces a lot. Because the RPM reading of the VESC is not very precise and can differ by ±400 RPMS. Problem is that the standard firmware always reduces the power at one VESC when traction control is enabled. This might be good to legalize the board in some Countries. This mode is experimental, when you press the throttle then it only activates the Cruise Control and hold the speed. If you don’t need it to go backwards then just simply use “Watt no reverse with Brake” It sounds complicated but it becomes very intuitive after a short while. If that is not the case then the value is too low. If the value is set correct you can now release the throttle and brake again and the motors should start to accelerate backwards. You will see that the motors are not able at very low speed to stop the board from moving. How do i find the perfect ERPM for that parameter?_ To drive backwards you have to release the throttle and brake again. If you are below 4000 ERPM backwards and you accelerated shortly to go forward and brake again then it will enable the normal brake again. When you drive backwards and you are above 4000 ERPM in the backwards direction then it will accelerate backwards and won’t brake. If you are above it will brake normally again. But this only works when you are below the ERPM (4000 in the picture). To drive backward you have to release the throttle and brake again. When this is enabled and you brake hard then the brakes will work like in “Watt with no reverse”. To avoid that i added the parameters “Enable maximum ERPM for direction switch” The only problem with the standard reverse function is that when you brake hard the wheels can start to spin backward while you still move forward. “Watt” Control Mode works like “Watt no reverse with Brake” with the difference that you also have a reverse.
Then 30% throttle will be 300 Watt, 50% throttle 500 Watt, 80% throttle 800 Watt and 100 % throttle 1000 Watt. If there is no limit set then it will calculate the maximum reachable watts by the actual Battery Voltage.Į.g. You can limit the maximum watts in the motor settings which explained further down in this post. 10S4P battery with battery max set to 25A then you have 3.6V * 10S * 25A = 900 Watts.
Bldc tool pid control series#
You can calculate it by 3.6V a cell * cells in series * battery max. The maximum Watts that can be reached are defined by the “Battery max” in the motor settings. So it is very easy to program a beginner mode with maybe 250 Watt. But you can set the real maximum values in the motor settings and just define here how much power you want. Of course, at close to max speed (motor KV) the efficiency of the motor can’t produce that power anymore.
This works at every speed as long as the Motor settings allow this much Power at this speed. This makes the board more controllable especially when you like carving at higher speeds. With Watt control, it has the advantage that it uses the entire throttle range at any speed. Watt no reverse with Brake (recommended) (also exists for Nunchuk)ĭepending on your “Motor max” and “Battery max” settings you will loose throttle range at higher speeds in “Current Control”. There are 3 new Control Modes for Watt Control: