PATENT CLAIM ANALYSIS

Application Number: 16074684
Application Type: Utility
Filing Date: 2018-08
Publication Date: 2019-02
Patent Classification: ["318", "400020"]

Abstract:
In a motor control device, a two-phase/three-phase converter is configured to convert a d-axis voltage instruction and a q-axis voltage instruction into voltage instructions in UVW phases. A PWM circuit is configured to generate drive pulse signals having undergone power width modulation, in accordance with the voltage instructions. An inverter is configured to generate drive voltages for driving coils based on the drive pulse signals. A position detector is configured to detect a rotational position. A rotational speed calculator is configured to calculate a rotational speed. A current detector is configured to detect drive currents flowing into the coils. A three-phase/two-phase converter is configured to convert detected drive current values into a d-axis current value and a q-axis current value. A d-axis voltage instruction generation unit is configured to acquire a difference between the d-axis current value and a d-axis current instruction having a predetermined value, and to generate the d-axis voltage instruction based on PI computation performed on the difference. A q-axis voltage instruction generation unit is configured to acquire a difference between a speed instruction and the rotational speed calculated by a rotational speed calculation unit, and to generate the q-axis voltage instruction based on PI computation performed on the difference.

Claim (Index 4):
A motor control method for a motor control device, the motor control device including:\n a PWM circuit configured to perform a rotation control on a motor including a stator including coils in three, UVW phases of a U phase, a V phase, and a W phase, and a rotor rotatably disposed so as to face the stator, the rotor holding permanent magnets, by utilizing a dq-axis coordinate system including a d-axis corresponding to a magnetic pole position direction of the permanent magnets and a q-axis orthogonal to the d-axis; and to generate drive pulse signals in the UVW phases, the drive pulse signals being undergone pulse width modulation per phase, in accordance with supplied drive voltage instructions in the UVW phases; an inverter configured to generate drive voltages in the UVW phases for driving the coils per phase based on the supplied drive pulse signals in the UVW phases; a position detector configured to detect a rotational position of the rotor; a rotational speed calculator configured to calculate a rotational speed of the rotor; a current detector configured to detect drive currents flowing into the coils in the UVW phases; and a three-phase/two-phase converter configured to convert current values of the drive currents in the UVW phases, the drive currents being detected by the current detector, into a d-axis current value and a q-axis current value on the dq-axis coordinate, the motor control method comprising: a step of acquiring a difference between the d-axis current value and a d-axis current instruction having a predetermined value, and of generating the d-axis voltage instruction based on PI computation performed on the difference; a step of acquiring a difference between a supplied speed instruction and the calculated rotational speed, and of generating the q-axis voltage instruction based on PI computation performed on the difference; and a step of converting the d-axis voltage instruction and the q-axis voltage instruction into the drive voltage instructions in the UVW phases.

Metadata:
- Claim Count in Document: 7.0
- Percentile: 96.0
- Lexical Diversity: 3.0
- Patent Class: 318.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15969461', '10784964', '11704971', '12296661', '10809530']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6897288618318216
- 35 USC 102 Novelty (BERT): 0.4894370850102764
- Combined Prediction Score: 0.6696996841496672
- Mean Citation Score: 255.064386
- Max Citation Score: 257.9095
- Similarity Product: 212.98855244478585

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

Dataset: test