PATENT CLAIM ANALYSIS

Application Number: 15908821
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2019-03
Patent Classification: ["318", "696000"]

Abstract:
A motor drive control device includes a PWM circuit configured to generate an excitation current for a motor, a measurement circuit configured to measure a charge duty of the excitation current, an arithmetic circuit configured to obtain a characteristic line from the change of the measured duty and calculate a predetermined division point of an excitation current waveform from the characteristic line, and a setting circuit configured to set a level of the excitation current at the division point.

Claim (Index 20):
A method for driving a stepper motor comprising an excitation coil and a PWM control circuit for driving the coil, comprising:\n generating multiple successive excitation currents for the excitation coil of the motor for a pseudo sine wave based on one or more parameters; measuring a decrease in a duty of the successive excitation currents for the excitation coil; determining a linear relationship of the decreasing duty; calculating a predetermined division point for the pseudo sine wave of an excitation current waveform from the determined linear relationship; and setting a level of the excitation current at the predetermined division point as one of the parameters, such that the excitation current is generated to provide the level of current at the predetermined division point.

Metadata:
- Claim Count in Document: 50.0
- Percentile: 90.0
- Lexical Diversity: 2.02439
- Patent Class: 318.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['12739546', '15261195', '11916117', '10727828', '14279770']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.5994499998568962
- 35 USC 102 Novelty (BERT): 0.4799283192087588
- Combined Prediction Score: 0.5874978317920825
- Mean Citation Score: 153.971478
- Max Citation Score: 175.73752
- Similarity Product: 131.13052343645572

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

Dataset: test