Driving apparatus, light source driving apparatus, light source apparatus, projection apparatus, and driving method, suitable for driving load in which value of physical quantity as controlled object periodically changes

摘要

A driving apparatus drives a load so as to periodically change a physical quantity as a controlled object. The apparatus includes a calculation unit configured to calculate a deviation between the targeted value and a detection value detected by the detection unit, a storage unit configured to store past deviations calculated by the calculation unit, a determination unit configured to determine a manipulative variable corresponding to the physical quantity, by referring to a past deviation before a predetermined period, which has been stored in the storage unit, and a driving unit configured to drive the load, based on the manipulative variable determined by the determination unit.

主权项

1. A driving apparatus which drives a load so as to periodically change a physical quantity as a controlled object, the apparatus comprising:
a setting unit configured to set a targeted value of the physical quantity; a detection unit configured to detect a present value of the physical quantity; a calculation unit configured to calculate a deviation between the targeted value and a detection value detected by the detection unit; a storage unit configured to store past deviations calculated by the calculation unit; a determination unit configured to determine a manipulative variable corresponding to the physical quantity, by referring to a past deviation before a predetermined period, which has been stored in the storage unit; and a driving unit configured to drive the load, based on the manipulative variable determined by the determination unit, wherein the storage unit and the determination unit are added to a proportional integral derivative (PID) control system using the setting unit, the detection unit, and the calculation unit.