Canon Kabushiki Kaisha

Eriko Uchida

Yuichiro Suzuki

An apparatus detects movement of a target object, estimates a control quantity for first feedback control for the target object at a first period, based on a detection signal, and estimates a first state quantity of the target object and a second state quantity obtained by time differentiation of the first state quantity in order to perform second feedback control for the target object at a second period shorter than the first period, based on the detection signal. The apparatus generates a first operation quantity for the first feedback control, based on the estimated control quantity, generates a second operation quantity for the second feedback control, based on the estimated first and second state quantities, and determines an output value, based on a result of comparing the second operation quantity with a maximum value of the first operation quantity.

Electric apparatus and control method therefor

An electric apparatus for controlling movement of an object detects the movement of the object, and estimates a control quantity for performing first feedback control for the object in a first period, based on a detection signal. The apparatus further generates, based on the detection signal, a timing signal for estimating a state quantity of the object in order to perform second feedback control for the object in a second period shorter than the first period, estimates the state quantity based on the timing signal, generates a first operation quantity for the first feedback control based on the control quantity, generates a second operation quantity for the second feedback control based on the state quantity, and generates an operation quantity of the object from the first operation quantity and the second operation quantity.

Growing community of inventors

Kawasaki, Japan

Eriko Uchida