{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9716452","patent":{"patent_number":"US-9716452","title":"Rotation angle calculation device","assignee":null,"inventors":[],"filing_date":"2016-04-07T00:00:00.000Z","publication_date":"2017-07-25T00:00:00.000Z","cpc_codes":["G01D"],"num_claims":12,"abstract":"An ECU has a function of calculating a rotation angle, which is used for torque control, based on amplitude-modulated signals SIN and COS outputted from an angle sensor and a synchronous detection signal. Frequency components generated at the time of switching operation of switching elements of an inverter connected to a motor-generator is included in an output voltage of the inverter. The ECU has a function of shifting frequencies of the frequency components and an excitation frequency of an excitation signal from each other so that noise having the frequencies of the frequency components are not superimposed on the amplitude-modulated signals SIN and COS."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Rotation angle calculation device","description":"An ECU has a function of calculating a rotation angle, which is used for torque control, based on amplitude-modulated signals SIN and COS outputted from an angle sensor and a synchronous detection sig","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9716452","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-9716452","citation_suggestion":"Patentable. \"Rotation angle calculation device\" (US-9716452). https://patentable.app/patents/US-9716452","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9716452","json":"https://patentable.app/api/llm-context/US-9716452","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T04:08:50.854Z"}