andrea_104kg
1 kW
- Joined
- Mar 5, 2018
- Messages
- 344
The reasoning arises from the fact that on all my motors (including the levo, via blewo) I have a wattmeter.
This shows me that an electric motor is already a torque meter in itself ...
It simply measures the force with the current draw.
The more effort, the more it absorbs, the less effort, the less it absorbs.
Let's take a common ebike control unit, both hub and bbs.
It has both a pas and an accelerator.
let's say to use the pas as a consensus function at the start and as a stop.
Then I take a 3 euro coupon acs712. It is a card that I have seen used for Arduino and it has the function that measures a current and from two pins that are at 2.5v when empty, it increases by a tot of mV every measured ampere.
We neglect the use with arduino (which has no analogue output from what I know unfortunately) since it can be used stand alone, just power it at 5v.
What would happen if I connected the output of the coupon to the accelerator (which also has a hall, it doesn't start from scratch, I don't remember if its 2.5v but we're there) and measured its absorption with the coupon?
When a climb comes the engine absorbs more and accelerates. however, if I pedal I get the opposite of the torque meter, the more I pedal, the less the motor absorbs and obviously the throttle voltage drops and the motor gives less. It would be good for the lazy, they pedal for pretense, they arrive uphill, the engine accelerates and they continue to pedal for pretense
Therefore a "logic" would be needed to reverse its operation, I pedal, the absorption decreases, the motor accelerates.
Obviously, the more sophisticated the logic, the more everything works better ....
Is it a far-fetched thing?
This shows me that an electric motor is already a torque meter in itself ...
It simply measures the force with the current draw.
The more effort, the more it absorbs, the less effort, the less it absorbs.
Let's take a common ebike control unit, both hub and bbs.
It has both a pas and an accelerator.
let's say to use the pas as a consensus function at the start and as a stop.
Then I take a 3 euro coupon acs712. It is a card that I have seen used for Arduino and it has the function that measures a current and from two pins that are at 2.5v when empty, it increases by a tot of mV every measured ampere.
We neglect the use with arduino (which has no analogue output from what I know unfortunately) since it can be used stand alone, just power it at 5v.
What would happen if I connected the output of the coupon to the accelerator (which also has a hall, it doesn't start from scratch, I don't remember if its 2.5v but we're there) and measured its absorption with the coupon?
When a climb comes the engine absorbs more and accelerates. however, if I pedal I get the opposite of the torque meter, the more I pedal, the less the motor absorbs and obviously the throttle voltage drops and the motor gives less. It would be good for the lazy, they pedal for pretense, they arrive uphill, the engine accelerates and they continue to pedal for pretense
Therefore a "logic" would be needed to reverse its operation, I pedal, the absorption decreases, the motor accelerates.
Obviously, the more sophisticated the logic, the more everything works better ....
Is it a far-fetched thing?