Patent ID: 11874644
Assignee: TEXAS INSTRUMENTS INCORPORATED
Field: Control (Instruments)
Classification: CPC G  H | IPC G  H

Claim 6:
7. A light projection system comprising:
a color wheel;
a motor coupled to the color wheel;
an inverter coupled to the motor; and
control circuitry coupled to the inverter, the control circuitry comprising;
an electronic memory; and
a processor configured to execute program instructions stored in the electronic memory to:
control the position according to a reference position pulse signal;
compute a parameter according to a velocity error value and a control function;
compute a control output value as a sum of the parameter and a dithering signal value, including by:
adjusting the parameter according to a machine position dependent waveform shaping function and a machine position feedback signal; and
computing the control output value as a sum of the adjusted parameter and the dithering signal value; and

control the position and velocity according to the control output value.