US 2009/0141061 A1 · METHOD FOR CONTROLLING A DC MOTOR

Abstract

A method of controlling a motor to cause it to execute a move toward a target position including calculating a deceleration position, wherein when the deceleration position is reached, the motor will be caused to execute a deceleration in a manner that will result in the motor stopping short of the target position, and determining whether the requested move is a first move type after the motor has reached the deceleration position and the deceleration is complete. If the requested move is a first move type, the method includes causing the motor to move toward the target position at a first velocity, and if the requested move is a second move type, the method includes causing the DC motor to move toward the requested target position at a second velocity, wherein the second velocity is greater than the first velocity. Settling time is also varied depending on move type.

Claims22

Dependent claims

A method of controlling a DC motor to cause said DC motor to execute a requested move toward a requested target position of a rotor of said DC motor, said DC motor being structured to execute a first move type and a second move type different than said first move type, said method comprising:

calculating a deceleration rotor position for said DC motor, wherein when said deceleration rotor position is reached, said DC motor will be caused to execute a deceleration in a manner that will result in the DC motor stopping short of said requested target position of said rotor;
after said DC motor has reached said deceleration rotor position and said deceleration is complete, determining whether said requested move is a first move type;
if said requested move is a first move type, causing said DC motor to move toward said requested target position of said rotor at a first velocity;
and
if said requested move is a second move type, causing said DC motor to move toward said requested target position of said rotor at a second velocity, said second velocity being greater than said first velocity.

2 more elements

A printer, comprising:

a DC transport motor for moving an item of print media toward a requested target position of a rotor of said DC motor in a requested move, said DC transport motor being structured to execute a first move type and a second move type different than said first move type;
a processing device operatively coupled to said DC transport motor, said processing device being adapted to:
calculate a deceleration rotor position for said DC transport motor, wherein when said deceleration rotor position is reached, said DC transport motor will be caused to execute a deceleration in a manner that will result in the DC transport motor stopping short of said requested target position of said rotor;
after said DC transport motor has reached said deceleration rotor position and said deceleration is complete, determine whether said requested move is a first move type;
if said requested move is a first move type, cause said DC transport motor to move toward said requested target position of said rotor at a first velocity;
and
if said requested move is second move type, causing said DC transport motor to move toward said requested target position of said rotor at a second velocity, said second velocity being greater than said first velocity.

4 more elements

Dependencies are inferred from the claim text.

Method for controlling a dc motor

Life of this patent

Method for controlling a dc motor

Life of this patent

Abstract

Claims22