Projection system, control device, and control method

A control device comprising:

• a prediction calculation unit that analyzes a first acceleration signal output from a first acceleration sensor provided at a bottom of a vehicle, that predicts vibration to be generated in a screen and a projector device fixed to a ceiling of the vehicle, and that obtains a predicted correction value based on the prediction;
• a correction value calculation unit that obtains a correction value based on actual measurements in accordance with relative behavior of the screen and the projector device;
• and
• a control calculation unit that performs control calculation by feeding back the correction value to the predicted correction value and that obtains an amount of drive of an actuator for suppressing vibration of an image projected on the screen.

A control method performed by a control device, the control method comprising:

• analyzing a first acceleration signal output from a first acceleration sensor provided at a bottom of a vehicle, predicting vibration to be generated in a screen and a projector device fixed to a ceiling of the vehicle, and obtaining a predicted correction value based on the prediction;
• obtaining a correction value based on actual measurements in accordance with relative behavior of the screen and the projector device;
• and
• performing control calculation by feeding back the correction value to the predicted correction value, and obtaining an amount of drive of an actuator for suppressing vibration of an image projected on the screen.