Position management apparatus and assisting apparatus
AssigneeFuji Corporation
InventorSatoshi Shimizu
Life of this patent
Estimating the term…
Abstract
A position management apparatus includes motors connected to a power supply; a position detecting device connected to the power supply and detecting the rotational position of the motors or the drive position of driving members driven by the motors; position storage devices connected to the power supply and storing the rotational position or the drive position detected by the position detecting devices; and a power cut-off delay circuit for keeping the position detecting devices and the position storage devices connected to the power supply even if the power switch is shut off from a conducting state, and for storing the rotational position or the drive position of the position storage devices after the motor has lost its rotational speed.
Claims6
A position management apparatus, comprising:
- a motor connected to a power supply via a power switch;
- a position detecting sensor which operates by being connected to the power supply and is configured to detect a rotational position of the motor or a drive position of a driving member driven by the motor;
- a position storage memory which operates by being connected to the power supply and is configured to store the rotational position or the drive position detected by the position detecting sensor;
- and
- a power cut-off delay circuit configured to keep the position detecting sensor and the position storage memory connected to the power supply even if the power switch is turned off from a conducting state, and to cut off the position detecting sensor and the position storage memory from the power supply after inertial rotation of the motor has stopped and the position storage memory has stored the rotational position or the drive position, the power cut-off delay circuit including
- a first relay configured to keep the position detecting sensor and the position storage memory connected to the power supply even when the power switch is turned off from the conducting state,
- a second relay configured to change an output state of the first relay to cut off the position detecting sensor and the position storage memory from the power supply,
- a first power supply input which is connected to the power supply via the power switch,
- a second power supply input which is connected to the power supply in parallel with the power switch, and
- a power supply output which is connected to the position detecting sensor and the position storage memory,
- wherein the first relay comprises a first input section which is connected to the first power supply input and the second power supply input,
- wherein the second relay comprises:
- a second input section, and
- a second output section, being connected between the first input section and the second input section, which is configured to output power supplied to the second power supply input to the first input section until a power cut-off command is inputted to the second input section from the position storage memory, while cutting off the power supplied to the first input section when the power cut-off command is inputted to the second input section, and
- wherein the first relay has a self-maintaining output section connected in series with the second output section and is configured to output power supplied to the second power input to the first input section according to an input state of the first input section.
Dependencies are inferred from the claim text.