{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9791103","patent":{"patent_number":"US-9791103","title":"Servo controller for measuring lubrication characteristics of a machine by experimental modal analysis","assignee":null,"inventors":[],"filing_date":"2016-01-29T00:00:00.000Z","publication_date":"2017-10-17T00:00:00.000Z","cpc_codes":["G05B","G05B","G05B"],"num_claims":3,"abstract":"A servo controller includes: a sinusoidal wave disturbance input unit for supplying a sinusoidal wave disturbance to a speed control loop including a speed command generator, a torque command generator and a speed detector; a frequency response calculator for estimating the gain and phase from the output of the speed control loop; a resonance frequency detector for detecting resonance frequencies at which the gain becomes maximum; a resonance mode characteristics analyzer for estimating resonance characteristics from the frequency response; and, a reference modal damping ratio retainer for retaining a reference modal damping ratio as a resonance characteristic corresponding to the reference lubricating condition, and the resonance mode characteristics analyzer calculates lubrication characteristics on the basis of the reference modal damping ratio and the measured modal damping ratio at the resonance frequency corresponding to the reference modal damping ratio."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Servo controller for measuring lubrication characteristics of a machine by experimental modal analysis","description":"A servo controller includes: a sinusoidal wave disturbance input unit for supplying a sinusoidal wave disturbance to a speed control loop including a speed command generator, a torque command generato","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9791103","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-9791103","citation_suggestion":"Patentable. \"Servo controller for measuring lubrication characteristics of a machine by experimental modal analysis\" (US-9791103). https://patentable.app/patents/US-9791103","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9791103","json":"https://patentable.app/api/llm-context/US-9791103","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T15:30:24.936Z"}