PATENT CLAIM ANALYSIS

Application Number: 16312443
Application Type: Utility
Filing Date: 2018-12
Publication Date: 2019-08
Patent Classification: ["701", "041000"]

Abstract:
An electric power steering apparatus of a vector control system that compensates a dead time of an inverter without tuning operation, improves a distortion of a current waveform and a responsibility of a current control, and suppresses a steering sound, a vibration and a ripple. The apparatus converts dq-axes current command values calculated based on at least a steering torque into 3-phase voltage command values, converts the 3-phase voltage command values into duty command values, driving-controls a 3-phase brushless motor by an inverter of a PWM control, and applies an assist torque to a steering system of a vehicle, wherein 3-phase detection voltages are estimated based on 3-phase motor terminal voltages, wherein loss voltages due to a dead time of the inverter are estimated from differences between 3-phase command voltages calculated from the duty command values and the 3-phase detection voltages, and wherein a dead time compensation of the inverter is performed by feeding-back dead time compensation values obtained by compensating the loss voltages to the 3-phase voltage command values.

Claim (Index 23):
The electric power steering apparatus according to  claim 22 ,\n wherein said correcting section comprises: a first gain section to multiply said voltage differences with a gain based on said q-axis current command value; and an adding section to add said voltage differences from said first gain section to voltage values from said first gain section.

Metadata:
- Claim Count in Document: 29.0
- Percentile: 98.0
- Lexical Diversity: 2.47945
- Patent Class: 701.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['16311469', '16312723', '16320664', '16312695', '16320734']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6015026935755793
- 35 USC 102 Novelty (BERT): 0.5657119795513369
- Combined Prediction Score: 0.597923622173155
- Mean Citation Score: 467.295928
- Max Citation Score: 529.97876
- Similarity Product: 355.1186308085322

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

Dataset: test