Eco Cruise Control Option

[BTCyberTruck]

Would be nice to set the cruise control based on motor torque, the most economical way to manage energy flow

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[Crissa]

The most annoying method for other drivers?

-Crissa

 

[BTCyberTruck]

The most annoying method for other drivers?

-Crissa

Better than a Prius doing 58 in the fast lane

 

[ajdelange]

Would be nice to set the cruise control based on motor torque, the most economical way to manage energy flow

I have no idea what you are trying to say. Either the driver or the auto pilot wants, at a particular moment of time, a certain speed. Speed is thus the control loop (meat or electronic) set point. If the vehicle slows down the driver presses the accelerator thus commanding the controller to advance the stator field relative to the rotor field thus producing more torque and thus causing the vehicle to speed up. If the autopilot is controlling speed it does that same thing with the only difference being that for the driver the limit is pedal travel and one can pin the power meter whereas the autopilot seems to be a bit less dramatic than that.

Given the above i suppose one could say that the cars already control the motors by controlling torque though if one were to look into the details of how they work one would say they are controllng the position of a space vector.

Are you perhaps suggesting that the autopilot should allow the driver to set the maximum power the autopilot can deliver thus limiting acceleration for improved trip consumption? Or by economical are you referring to a control architecture simpler than the current space vector control algorithms allow?

 

[Crissa]

I have no idea what you are trying to say. Either ...

Having a constant power input vs meeting a speed point (with varied power input) are different types of speed control. The former is more energy efficient, because you don't accelerate up hills, the latter is better to drive.

Whatever it has, it won't have the Chevy-shifts-gear-down-at-the-top-of-the-hill problem.

-Crissa