Power control based on cumulative error

A system comprising:

• a processor;
• and
• a non-transitory storage medium storing instructions for power control executable on the processor to:
• receive information generated by a pulse width modulation (PWM) controller relating to power control of a component, the information indicating a plurality of time periods, wherein a time period of the plurality of time periods includes a power event and a zero power event, the power event comprising an event to apply power to the component, and the zero power event comprising an event to refrain from applying power to the component;
• track a cumulative error value that is adjusted based on elimination of a power event or elimination of a zero power event in the time period;
• and
• determine a value of a first term if a power event in the time period is eliminated, and determine a value of a second term if a zero power event in the time period is eliminated, and
• based on the cumulative error value, the value of the first term, and the value of the second term, decide between eliminating the power event in the time period and eliminating the zero power event in the time period.

A method of power control performed by a system comprising a hardware processor, comprising:

• receiving information of a plurality of time periods, wherein each of some of the plurality of time periods includes a set of power events to apply power to respective components, and a zero power event to refrain from applying power to the components;
• tracking a cumulative error value that is adjusted based on elimination of a power event of the set of power events or elimination of a zero power event in a time period of the plurality of time periods;
• and
• for a respective time period of the plurality of time periods:
• determining a value of a first term if a given power event of a set of power events in the respective time period is eliminated, and determining a value of a second term if a zero power event in the respective time period is eliminated, and
• based on aggregating the cumulative error value and the value of the first term, and aggregating the cumulative error value and the value of the second term, deciding between eliminating the given power event in the respective time period and eliminating the zero power event in the respective time period.