{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9798318","patent":{"patent_number":"US-9798318","title":"Online frequency response characterization system and method","assignee":null,"inventors":[],"filing_date":"2014-04-14T00:00:00.000Z","publication_date":"2017-10-24T00:00:00.000Z","cpc_codes":["G05B","G05B","G06F","G05B"],"num_claims":21,"abstract":"A system may include a controller that may control operations of a device according to a control loop and characterize a frequency response of the device while the device is operating. The controller may characterize the frequency response by adding a perturbation signal to any signal in the control loop. The controller may then determine a first transformed signal by performing a first discrete Fourier transform on a first signal in the control loop at a frequency of the perturbation signal and determine a second transformed signal by performing a second discrete Fourier transform on a second signal in the control loop at the frequency of the perturbation signal. The controller may then determine the frequency response at the frequency by comparing a first amplitude and a first phase of the first transformed signal to a second amplitude and a second phase of the second transformed signal."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Online frequency response characterization system and method","description":"A system may include a controller that may control operations of a device according to a control loop and characterize a frequency response of the device while the device is operating. The controller ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9798318","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-9798318","citation_suggestion":"Patentable. \"Online frequency response characterization system and method\" (US-9798318). https://patentable.app/patents/US-9798318","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9798318","json":"https://patentable.app/api/llm-context/US-9798318","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T06:45:48.565Z"}