PATENT CLAIM ANALYSIS

Application Number: 15988450
Application Type: Utility
Filing Date: 2018-05
Publication Date: 2018-12
Patent Classification: ["318", "432000"]

Abstract:
A motor control apparatus, to control a motor based on an instruction phase representing a target phase of a rotor of the motor, includes a phase determiner, to determine a rotation phase of the motor rotor, and a controller having a first control mode to control a drive current flowing through a winding of the motor and a second control mode to supply a current to the winding corresponding to an instruction phase. To reduce a deviation between the instruction and rotation phases, the first control mode results in flowing drive current control based on a rotating coordinate system represented torque current component generating a torque in the rotor. The second control mode results in phase different drive current control first instruction phase. The controller starts the first control mode based on the rotation phase of the rotor determined based on the second instruction phase in the second control mode.

Claim (Index 16):
An image forming apparatus to form an image on a recording medium, the image forming apparatus comprising:\n an image forming unit configured to form an image on the recording medium; a motor configured to drive a load; a phase determiner configured to determine a rotation phase of a rotor of the motor; a speed determiner configured to determine a rotation speed of the rotor; and a controller having a first control mode for controlling a drive current flowing through a winding of the motor, based on a torque current component generating a torque in the rotor, so as to reduce a deviation between the instruction speed representing a target speed of the rotor and the rotation speed determined by the speed determiner, and a second control mode for controlling a current corresponding to the instruction phase to the winding, wherein the torque current component is represented in a rotating coordinate system based on the rotation phase determined by the phase determiner, wherein, in the second control mode, the controller controls the drive current in such a manner that a current corresponding to a first instruction phase as the instruction phase flows through the winding and then controls the drive current in such a manner that a current corresponding to a second instruction phase flows through the winding, wherein the second instruction phase has a phase difference other than 0\u00b0 and 180\u00b0 between the first instruction phase and the second instruction phase, wherein the phase determiner determines the rotation phase of the rotor based on the second instruction phase, and wherein the controller starts the first control mode based on the rotation phase of the rotor determined by the phase determiner based on the second instruction phase in the second control mode.

Metadata:
- Claim Count in Document: 24.0
- Percentile: 93.0
- Lexical Diversity: 3.0
- Patent Class: 318.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15471902', '15600469', '15943022', '15873674', '15807457']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7064388999914041
- 35 USC 102 Novelty (BERT): 0.5211596638018124
- Combined Prediction Score: 0.6879109763724449
- Mean Citation Score: 320.9937280000001
- Max Citation Score: 344.66104
- Similarity Product: 303.8417995124817

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 0
- Claim Label 112: 0
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test