PATENT CLAIM ANALYSIS

Application Number: 15900937
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2018-10
Patent Classification: ["318", "400130"]

Abstract:
An initial position determination process and a rotation driving process are both attained. A motor includes a rotor having a permanent magnet with a plurality of magnetic poles and a stator having coils with a plurality of phases. A voltage signal generation part generates a voltage signal corresponding to an electric current flowing through each of the coils with the phases of the stator. A filter part includes a first filter and a second filter. The voltage signal is inputted to a comparator through the filter part. A control part controls such that the first filter whose filter constant is larger is selected when performing the initial position determination process of the rotor and the second filter whose filter constant is smaller is selected when performing the rotation driving process.

Claim (Index 2):
The motor driving device according to  claim 1  further comprising a timer for measuring a voltage rise time which shows a time difference between a predetermined timing and a timing at which it is determined that the voltage signal is equal to a first reference voltage in the comparator,\n wherein the control part controls the electrical conduction control part to supply electric currents to the coils with the phases while changing electrically conductive phases in the initial position determination process, controls the voltage signal generation part to generate a voltage signal corresponding to an electric current flowing through each of coils with other phases coupled to the coils to which the electric currents are supplied, controls the timer to measure the voltage rise time with respect to each of the coils with the other phases, and determines the initial position of the rotor based on a measurement result of the voltage rise time.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 88.0
- Lexical Diversity: 2.26667
- Patent Class: 318.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['14797103', '12594064', '12593845', '10684380', '11881243']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6202043900341553
- 35 USC 102 Novelty (BERT): 0.4870272149527973
- Combined Prediction Score: 0.6068866725260196
- Mean Citation Score: 193.752872
- Max Citation Score: 200.91011
- Similarity Product: 149.79463519417826

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