DC motor control device and control method
AssigneeSeiko Epson Corporation
InventorTeruki Kurashina
Life of this patent
Estimating the term…
Abstract
A DC motor control device and a DC motor control method are configured to calculate driving motion time and DC motor current flow per unit time, or DC motor total current flow and driving motion time, every continuous driving motion of the DC motor, and interpose a drive stopping time to stop the DC motor for a time corresponding to the calculated value every time before a subsequent driving motion starts. Alternatively, they are configured to interpose a drive stopping time to stop the DC motor for a time calculated by cumulating such time corresponding to the calculated value over a plurality of occurrences every time before a subsequent block of driving motions starts after each block of driving motions.
Claims5
A DC motor control device comprising:
- a total current calculating device which calculates total current flow in a DC motor in one continuous driving motion every time when one continuous driving motion of the DC motor occurs;
- a driving time calculating device which calculates driving time of the DC motor in one continuous driving motion every time when one continuous driving motion of the DC motor occurs;
- an unit time current flow calculating device which calculates current flow in the DC motor per unit time of one continuous driving motion from said driving time of the DC motor and said total current flow in the DC motor;
- and
- a drive stopping time calculating device which calculates a drive stopping time to stop the DC motor for a time responsive to said driving time of the DC motor and said current flow in the DC motor per unit time every time when a subsequent driving motion starts after one continuous driving motion.
A DC motor control method comprising:
- a first process for calculating the driving motion time of one continuous driving motion and the current flow in a DC motor per unit time every time when one continuous driving motion of the DC motor occurs;
- a second process for calculating a drive stopping time responsive to said driving motion time and said current flow in the DC motor per unit time every time when one continuous driving motion of the DC motor occurs;
- and
- a third process for stopping the DC motor for said drive stopping time before a subsequent driving motion starts after each continuous driving motion only when said drive stopping time is a positive value.
Dependencies are inferred from the claim text.