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 12):
A computer readable storage medium for allowing a computer to rotate a brushless DC motor including a rotor having a permanent magnet with a plurality of poles and a stator having coils with a plurality of phases, comprising the steps of:\n controlling the computer to supply electric currents to the coils with the phases while changing electrically conductive phases; controlling a timer to measure a voltage rise time, with respect to each of the coils with the other phases, showing a time difference between a predetermined timing and a timing at which it is determined that 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 is equal to a first reference voltage in a comparator to which the voltage signal is inputted through a first filter; determining an initial position of the rotor based on a measurement result of the voltage rise time; determining an electrically conductive phase based on a determination result of the initial position of the rotor; starting a rotation driving process of the rotor by supplying an exciting current to a coil with the determined electrically conductive phase; and rotating the rotor by switching the coil phase to which the exciting current is supplied with a timing at which it is determined that a voltage signal corresponding to an induced electromotive force generated in a coil with an electrically non-conductive phase being different from the phase to which the exciting current is supplied is equal to a second reference voltage in a comparator to which the voltage signal is inputted through a second filter whose filter constant is smaller than that of the first filter.

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): 0.6209014257234751
- 35 USC 102 Novelty (BERT): 0.4840766448180965
- Combined Prediction Score: 0.6072189476329373
- Mean Citation Score: 193.752872
- Max Citation Score: 200.91011
- Similarity Product: 154.2604536560452

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