公开(公告)号：US20250147502A1

公开(公告)日：2025-05-08

申请号：US18712303

申请日：2022-10-26

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： TORU TAZAWA ,  YUSUKE KUBOI ,  YUTA SHIRAKI ,  KOICHI KUSUKAME

IPC: G05B23/02

Abstract: An object is to make it easy to intuitively understand a state of a drive system. Diagnosis system (1) diagnoses a specific state related to performance of drive system (A1) including mechanical mechanism (M1) driven by motor (62). Diagnosis system (1) includes first acquisition part (11), second acquisition part (12), arithmetic part (21), and output processor (22). First acquisition part (11) acquires specification information (D1) related to a specification of mechanical mechanism (M1). Second acquisition part (12) acquires actual measurement information (D2) related to a mechanical characteristic of mechanical mechanism (M1). Arithmetic part (21) calculates an index value associated with the specific state based on specification information (D1) and actual measurement information (D2). Output processor (22) outputs the index value in a mode in which the user can identify the specific state.

公开(公告)号：US20240413776A1

公开(公告)日：2024-12-12

申请号：US18700959

申请日：2022-09-09

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： YUTA SHIRAKI ,  HIROSHI FUJIWARA ,  TORU TAZAWA

IPC: H02P23/14 ,  H02P21/05 ,  H02P21/20 ,  H02P23/30

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 (11) 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.