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US 7,009,824 B2Granted
Electrically-operated actuator system
AssigneeDenso Corporation
InventorsTokuhisa Takeuchi, Takashi Takata
Life of this patent
Estimating the term…
Abstract
An actuator, operated by being supplied with electric power, needs an initial setting for performing a desired operation by recognizing its starting position. The initial setting is conducted when an abnormality occurs in a signal which represents an operation of the actuator. The initial setting is also conducted when a system for the actuator recognizes a fact that a battery is electrically disconnected in association with information denoting a condition of the battery in a memory.
Claims13
An electrically-operated actuator system comprising:
- an electrically-operated motor rotating by being supplied with current from a power source;
- a rotation angle detector for detecting a rotation angle of said motor in association with a signal which relates to said rotation angle;
- an initial position setting portion for setting an initial position of said motor based on a starting point memorized therein;
- and
- an initial position resetting portion for activating said initial position setting portion in a situation where an abnormality occurs in said signal or where said power source is electrically disconnected.
2 more elements
Dependencies are inferred from the claim text.