Alternator Control

Alternator Control

Alternator Control

The Alternator Control function allows for the ECU to control the charging voltage of alternator that supports this function. This is done with a duty signal that is sent to the voltage regulator to alter the charging rate.  A Target Voltage is set and the duty controlled in closed-loop to maintain charging at this target.

Frequency - The frequency of the signal required to control the alternator.

Min Duty - The minumum duty cycle the control system will output.

Max Duty - The maximum duty cycle the control system will output.

Proportional - Controls the sensitivity of the control system. The larger the proportional value the larger the change in duty when there is an error between the actual battery voltage and the target battery voltage.

Integral - Controls the speed of the control system's ability to reach the target battery voltage from a steady error. Too large of a value will make the actual battery voltage oscillate around the target battery voltage.

Derivative - Acts as a dampener on the control effort to reduce overshooting and improve settling time.

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