Quote:
Originally Posted by MPaulHolmes
I tested out the newest version of the software today. version 1.7. Over-rev protection works perfectly while in neutral.
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Paul, from what I remember the way you get around the over-rev protection without a speed sensor is by comparing the motor current to the PWM duty cycle. Am I right in thinking that the value of the constant you come up with for this comparison depends on the torque constant of your motor, the battery voltage, load on the motor and perhaps other considerations right?
Do you think there is an easy way to come up with different values for a wide variety of hardware configurations?
Or is it really not that crucial. I mean will one particular constant value limit RPMs to X plus/minus say 10% or 20% or so. Regardless of the hardware configuration. After all, having a precise limit to the RPMs to is not critical...as long as the limit is low enough to avoid having the motor blow apart, and high enough to be useful for the driver.