Patent ID: 6992453

Claim:
An actuator control system comprising: a first actuator for moving an object under control in the direction of a first axis; first controlling means for carrying out first positioning control whereby to position the object under control at a target position on the first axis by operating the first actuator, by using response specifying control wherein a behavior for attenuating a difference between a target position and an actual position of the object under control and a speed of the attenuation can be variably specified so as to match the target position and the actual position of the object under control, and by determining a manipulated variable for driving the first actuator so as to converge a value of a switching function, which is specified by a linear function based on at least the difference, to zero; a second actuator for moving the object under control in the direction of a second axis that has a predetermined angle with respect to the first axis; and second controlling means for carrying out second positioning control whereby to position the object under control at a target position on the second axis by operating the second actuator, wherein, when the object under control is moved to the target position on the second axis by carrying out the second positioning control while the object under control has been positioned at the target position on the first axis by the first positioning control, the first controlling means sets a computing coefficient of the linear function in the first positioning control such that a disturbance suppressing capability level becomes lower than that when the object under control is moved to the target position on the first axis by the first positioning control while the object under control has been positioned at the target position on the second axis by the second positioning control.