Control apparatus and method of controlling the same
AssigneeCanon Kabushiki Kaisha
InventorTakashi Fujinaga
Life of this patent
Estimating the term…
Abstract
A control apparatus that controls a stepping motor, comprises a determination unit configured to determine a current value to be applied to the stepping motor by looking up a first driving table, which is to be looked up when driving is to be performed in a first driving direction, and a second driving table, which is to be looked up when driving is to be performed in a second driving direction in reverse of the first driving direction. The determination unit includes an interpolation calculation unit configured to calculate the current value by interpolation calculation that looks up both the first driving table and the second driving table, in a case in which driving is to be performed in a driving direction different from a driving direction of a preceding driving operation.
Claims10
A control apparatus that controls a stepping motor of which position can be commanded by applied current values, comprising:
- a determination unit configured to determine a current value to be applied to the stepping motor by looking up a first driving table, which is to be looked up when driving is to be performed in a first driving direction, and a second driving table, which is to be looked up when driving is to be performed in a second driving direction in reverse of the first driving direction,
- wherein the determination unit includes an interpolation calculation unit configured to calculate the current value by interpolation calculation that looks up both the first driving table and the second driving table, in a case in which driving of the stepping motor is to be performed in a driving direction different from a driving direction of a preceding driving operation.
A method of controlling a stepping motor of which position can be commanded by applied current values, comprising:
- determining a current value to be applied to the stepping motor by looking up a first driving table, which is to be looked up when driving is to be performed in a first driving direction, and a second driving table, which is to be looked up when driving is to be performed in a second driving direction in reverse of the first driving direction,
- wherein in the determining, the current value is calculated by interpolation calculation that looks up both the first driving table and the second driving table in a case in which driving of the stepping motor is to be performed in a driving direction different from a driving direction of a preceding driving operation.
A non-transitory computer-readable recording medium storing a program for causing a computer to execute a method of controlling a stepping motor of which position can be commanded by applied current values, comprising:
- determining a current value to be applied to the stepping motor by looking up a first driving table, which is to be looked up when driving is to be performed in a first driving direction, and a second driving table, which is to be looked up when driving is to be performed in a second driving direction in reverse of the first driving direction,
- wherein in the determining, the current value is calculated by interpolation calculation that looks up both the first driving table and the second driving table in a case in which driving of the stepping motor is to be performed in a driving direction different from a driving direction of a preceding driving operation.
Dependencies are inferred from the claim text.