The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 15, 2026
Filed:
Sep. 09, 2022
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Abstract
Frequency characteristics are measured with high accuracy. Frequency characteristic measurement apparatus includes first output part, frequency characteristic calculator, resonance frequency calculator, and second output part. Frequency characteristic calculator calculates a first frequency characteristic of servo system based on a first excitation signal in a first frequency range from first output part () and a first state signal acquired from servo system having received the first excitation signal. Resonance frequency calculator calculates a resonance frequency or an antiresonance frequency of servo system based on the first frequency characteristic. Second output part outputs a second excitation signal in a second frequency range including the resonance frequency or the antiresonance frequency. Frequency characteristic calculator calculates a second frequency characteristic of servo system based on a second excitation signal and a second state signal acquired from servo system having received the second excitation signal.