FREQUENCY CHARACTERISTIC MEASUREMENT APPARATUS AND FREQUENCY CHARACTERISTIC MEASUREMENT METHOD

• Main Authors: SHIRAKI, Yuta, FUJIWARA, Hiroshi, TAZAWA, Toru
• Format: Patent
• Language: English; French; German
• Published: 04.09.2024
• Subjects: CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; PHYSICS; REGULATING; SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES

Frequency characteristics are measured with high accuracy. Frequency characteristic measurement apparatus (10) includes first output part (11), frequency characteristic calculator (13), resonance frequency calculator (14), and second output part (12). Frequency characteristic calculator (13) calculates a first frequency characteristic of servo system (20) 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 (20) having received the first excitation signal. Resonance frequency calculator (14) calculates a resonance frequency or an antiresonance frequency of servo system (20) based on the first frequency characteristic. Second output part (12) outputs a second excitation signal in a second frequency range including the resonance frequency or the antiresonance frequency. Frequency characteristic calculator (13) calculates a second frequency characteristic of servo system (20) based on a second excitation signal and a second state signal acquired from servo system (20) having received the second excitation signal.