{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11305425","patent":{"patent_number":"US-11305425","title":"Angular transmission error identification system, angular transmission error identification method, and robot system","assignee":null,"inventors":[],"filing_date":"2018-06-04T00:00:00.000Z","publication_date":"2022-04-19T00:00:00.000Z","cpc_codes":["B25J","B25J","B25J","B25J","B25J","B25J","B25J","B25J","G05B","G05B","G05B","G05B","G05B","G05B"],"num_claims":8,"abstract":"An angular transmission error identification system that identifies an angular transmission error of a speed reducer of a robot arm including a joint that is rotationally driven by a motor via the speed reducer, including an identification unit that calculates amplitude and phase parameters of an angular transmission error identification function, which is a periodic function that models an angular transmission error of the speed reducer and has the parameters, and identifies the error using the function, wherein the unit calculates an amplitude parameter corresponding to a gravitational torque current value which is a value acting on a joint when the error is identified using a first or second amplitude function according to a value of the gravitational torque current value, and calculates a phase parameter corresponding to the gravitational torque current value using a first or second phase function according to a value of the gravitational torque current value."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Angular transmission error identification system, angular transmission error identification method, and robot system","description":"An angular transmission error identification system that identifies an angular transmission error of a speed reducer of a robot arm including a joint that is rotationally driven by a motor via the spe","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11305425","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-11305425","citation_suggestion":"Patentable. \"Angular transmission error identification system, angular transmission error identification method, and robot system\" (US-11305425). https://patentable.app/patents/US-11305425","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11305425","json":"https://patentable.app/api/llm-context/US-11305425","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T06:34:38.739Z"}