DC motor control
AssigneeHewlett-Packard Development Company, L.P.
InventorsDouglas L. Harriman, Robert D. Davis, Robert P. Callaway
Life of this patent
Estimating the term…
Abstract
A method of controlling a DC motor is presented. In a tracking action, an input to the motor is tracked. In a comparing action, the input is compared against a baseline value. In an adjusting action, a usage of the motor is adjusted when the input passes a threshold related to a motor performance parameter. A method of estimating a parameter of an ink carriage moved by a DC motor is also presented. In a tracking step, an input to the motor is tracked. In a comparing action, the input is compared against a baseline value to predict a level of the parameter.
Claims25
A method of controlling a DC motor, comprising:
- tracking an input to the motor;
- comparing the input against a baseline value;
- and
- adjusting a usage of the motor when the input passes a threshold related to a motor performance parameter.
A method of controlling a DC motor, comprising:
- tracking a PWM during a motor move;
- storing the tracked PWM as a baseline value if the motor is at an ambient state;
- comparing the tracked PWM to the baseline value if the motor is not at the ambient state;
- if the tracked PWM is greater than a hot percentage of the baseline value:
- determining that the motor is in a hot state;
- and
- limiting a usage of the motor;
- and
- if the tracked PWM is not greater than a hot percentage of the baseline value, and if the motor is in a hot state, and if the tracked PWM is not greater than a warm percentage of the baseline value:
- determining that the motor is in a warm state;
- and
- not limiting the usage of the motor.
A method of estimating a parameter of an ink carriage moved by a DC motor, comprising:
- tracking an input to the motor;
- comparing the input against a baseline value to predict a level of the parameter.
An imaging device, comprising:
- a direct current motor;
- and
- means for adjusting a usage of the motor based on a tracked input to the motor.
Dependencies are inferred from the claim text.