{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9751178","patent":{"patent_number":"US-9751178","title":"Servo control apparatus having function of sensorless controlled stop","assignee":null,"inventors":[],"filing_date":"2016-05-04T00:00:00.000Z","publication_date":"2017-09-05T00:00:00.000Z","cpc_codes":["G05B","B23Q","B23Q","B23Q","B23Q","G05B","G05B"],"num_claims":4,"abstract":"A servo control apparatus includes a sensor unit for detecting a motor speed; an amplifier for driving a motor and feeding back a current; a magnetic pole position detector; a position controller for outputting a speed command; a speed controller for outputting a current command; a current controller for outputting a voltage command; a speed estimator for calculating an estimated speed from the voltage command; a magnetic pole position estimator for calculating an estimated magnetic pole position from the estimated speed; a sensor malfunction detector; a stop position command generator; and a first switch for switching from the position command to the stop position command, a second switch for switching from the magnetic pole position to the estimated magnetic pole position, and a third switch for switching from the detected speed to the estimated speed, when the sensor malfunction detector has detected a malfunction."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Servo control apparatus having function of sensorless controlled stop","description":"A servo control apparatus includes a sensor unit for detecting a motor speed; an amplifier for driving a motor and feeding back a current; a magnetic pole position detector; a position controller for ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9751178","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-9751178","citation_suggestion":"Patentable. \"Servo control apparatus having function of sensorless controlled stop\" (US-9751178). https://patentable.app/patents/US-9751178","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9751178","json":"https://patentable.app/api/llm-context/US-9751178","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T10:19:12.952Z"}