{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9590522","patent":{"patent_number":"US-9590522","title":"Motor driving system","assignee":null,"inventors":[],"filing_date":"2015-10-08T00:00:00.000Z","publication_date":"2017-03-07T00:00:00.000Z","cpc_codes":["H02M","H02M","H02M","H02M"],"num_claims":8,"abstract":"A motor driving system includes an offset value learning part, which learns offset values of current sensors, when all switching elements are in off-states and a motor driving circuit is in an off-state, in which the motor driving circuit generates no motor driving current. The offset value learning part includes a first learning part and a second learning part. The first learning part learns the offset value of the current sensor of each phase at an arbitrary motor rotation angle, when an induced motor voltage of a three-phase motor is smaller than an input voltage of the motor driving circuit. The second learning part sequentially learns the offset value of the current sensor of the phase, a phase voltage value of which varying with the motor rotation angle is intermediate, when the induced motor voltage is equal to or larger than the input voltage."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Motor driving system","description":"A motor driving system includes an offset value learning part, which learns offset values of current sensors, when all switching elements are in off-states and a motor driving circuit is in an off-sta","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9590522","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-9590522","citation_suggestion":"Patentable. \"Motor driving system\" (US-9590522). https://patentable.app/patents/US-9590522","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9590522","json":"https://patentable.app/api/llm-context/US-9590522","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T08:04:02.235Z"}