US 2010/0141200 A1 · STEPPING MOTOR CONTROLLING DEVICE, METHOD, AND STORAGE MEDIUM

Abstract

A stepping motor controlling device includes first and second clock signal generators, plural drivers, and a controller. The first clock signal generator generates a reference clock signal for rotationally driving of plural stepping motors. The second clock signal generator generates, on the basis of the reference clock signal, for each of the stepping motors, speed control clock signals. The plural drivers are provided respectively for the stepping motors and, on the basis of the speed control clock signals for the respective stepping motors, generate pulse excitation signals and input the pulse excitation signals to the stepping motors to rotationally drive the stepping motors. The controller controls the second clock signal generator to generate the speed control clock signals such that phases of the respective speed control clock signals for the stepping motors differ from one another.

Claims11

Dependent claims

A stepping motor controlling device comprising:

a first clock signal generator that generates a reference clock signal that is a reference for operation timings of rotationally driving a plurality of stepping motors;
a second clock signal generator that, on the basis of the reference clock signal, generates, for each of the plurality of stepping motors, speed control clock signals that determine respective rotational speeds of the stepping, motors;
a plurality of drivers that are provided respectively for the plurality of stepping motors, and that, on the basis of the speed control clock signals for the respective stepping motors, generate pulse excitation signals and input the pulse excitation signals to the stepping motors to rotationally drive the stepping motors;
and
a controller that controls the second clock signal generator to generate the speed control clock signals such that phases of the respective speed control clock signals for the plurality of stepping motors differ from one another.

2 more elements

A computer readable storage medium storing a program causing a computer to execute control processing of a plurality of stepping motors, the control processing comprising;

generating a reference clock signal that is a reference for operation timings of rotationally driving the plurality of stepping motors;
on the basis of the reference clock signal, generating, for each of the plurality of stepping motors, speed control clock signals that determine respective rotational speeds of the stepping motors, the respective speed control clock signals being generated such that phases thereof differ from one another;
and
on the basis of the speed control clock signals of the respective stepping motors, generating pulse excitation signals, inputting the pulse excitation signals to the stepping motors to rotationally drive the stepping motors.

1 more element

Dependencies are inferred from the claim text.

Stepping motor controlling device, method, and storage medium

Life of this patent

Stepping motor controlling device, method, and storage medium

Life of this patent

Abstract

Claims11