{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8496765","patent":{"patent_number":"US-8496765","title":"Method for correcting speed deviations between actual and nominal pull speed during crystal growth","assignee":null,"inventors":[],"filing_date":"2009-09-10T00:00:00.000Z","publication_date":"2013-07-30T00:00:00.000Z","cpc_codes":["G05B"],"num_claims":6,"abstract":"A system and method correct crystal pulling motor speed deviations in a crystal pulling mechanism. In a first embodiment, a processor implements a tracking filter by estimating new filter state based on previous state and the since-then-travelled nominal distance, and then updating the filter state based on estimation error and filter gains which are also functions of the travelled nominal distance. In a second embodiment, a harmonic tracking filter suppresses residual harmonic modulation and allows a short time constant. Rapid variations of pulling speed may thus be corrected."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Method for correcting speed deviations between actual and nominal pull speed during crystal growth","description":"A system and method correct crystal pulling motor speed deviations in a crystal pulling mechanism. In a first embodiment, a processor implements a tracking filter by estimating new filter state based ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8496765","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-8496765","citation_suggestion":"Patentable. \"Method for correcting speed deviations between actual and nominal pull speed during crystal growth\" (US-8496765). https://patentable.app/patents/US-8496765","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8496765","json":"https://patentable.app/api/llm-context/US-8496765","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T14:05:02.231Z"}