{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:SIQXAFMFG5GGAMFG7QRICAF2UH","short_pith_number":"pith:SIQXAFMF","schema_version":"1.0","canonical_sha256":"9221701585374c6030a6fc228100baa1d4e323def65fe2042df1e630c8143dcd","source":{"kind":"arxiv","id":"1811.07732","version":1},"attestation_state":"computed","paper":{"title":"Sensorless Control of the Levitated Ball","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.SY","authors_text":"Alexey Bobtsov, Alexey Vedyakov, Anton Pyrkin, Romeo Ortega","submitted_at":"2018-11-16T16:15:11Z","abstract_excerpt":"One of the most widely studied dynamical systems in nonlinear control theory is the levitated ball. Several full-state feedback controllers that ensure asymptotic regulation of the ball position have been reported in the literature. However, to the best of our knowledge, the design of a stabilizing law measuring only the current and the voltage - so-called sensorless control - is conspicuous by its absence. Besides its unquestionable theoretical interest, the high cost and poor reliability of position sensors for magnetic levitated systems, makes the problem of great practical application. Our"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1811.07732","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SY","submitted_at":"2018-11-16T16:15:11Z","cross_cats_sorted":[],"title_canon_sha256":"388261762137922a9ecb57bc250e5459969485bef3ac82d21ab5329821f3c9e0","abstract_canon_sha256":"34895424ad28239c3eea115ac5370a363370dd95b80b35a3abfd78cb15dea184"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:00:23.588661Z","signature_b64":"ZxOVpwxBe11VjsBXahn55epVeJ+GZwjz9VnM2VAYzUdvE/ISPHQ1PZwy1xYpjS60NEgcir0AKFWFZEK380sEAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9221701585374c6030a6fc228100baa1d4e323def65fe2042df1e630c8143dcd","last_reissued_at":"2026-05-18T00:00:23.588087Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:00:23.588087Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Sensorless Control of the Levitated Ball","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.SY","authors_text":"Alexey Bobtsov, Alexey Vedyakov, Anton Pyrkin, Romeo Ortega","submitted_at":"2018-11-16T16:15:11Z","abstract_excerpt":"One of the most widely studied dynamical systems in nonlinear control theory is the levitated ball. Several full-state feedback controllers that ensure asymptotic regulation of the ball position have been reported in the literature. However, to the best of our knowledge, the design of a stabilizing law measuring only the current and the voltage - so-called sensorless control - is conspicuous by its absence. Besides its unquestionable theoretical interest, the high cost and poor reliability of position sensors for magnetic levitated systems, makes the problem of great practical application. Our"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1811.07732","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"1811.07732","created_at":"2026-05-18T00:00:23.588188+00:00"},{"alias_kind":"arxiv_version","alias_value":"1811.07732v1","created_at":"2026-05-18T00:00:23.588188+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1811.07732","created_at":"2026-05-18T00:00:23.588188+00:00"},{"alias_kind":"pith_short_12","alias_value":"SIQXAFMFG5GG","created_at":"2026-05-18T12:32:53.628368+00:00"},{"alias_kind":"pith_short_16","alias_value":"SIQXAFMFG5GGAMFG","created_at":"2026-05-18T12:32:53.628368+00:00"},{"alias_kind":"pith_short_8","alias_value":"SIQXAFMF","created_at":"2026-05-18T12:32:53.628368+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/SIQXAFMFG5GGAMFG7QRICAF2UH","json":"https://pith.science/pith/SIQXAFMFG5GGAMFG7QRICAF2UH.json","graph_json":"https://pith.science/api/pith-number/SIQXAFMFG5GGAMFG7QRICAF2UH/graph.json","events_json":"https://pith.science/api/pith-number/SIQXAFMFG5GGAMFG7QRICAF2UH/events.json","paper":"https://pith.science/paper/SIQXAFMF"},"agent_actions":{"view_html":"https://pith.science/pith/SIQXAFMFG5GGAMFG7QRICAF2UH","download_json":"https://pith.science/pith/SIQXAFMFG5GGAMFG7QRICAF2UH.json","view_paper":"https://pith.science/paper/SIQXAFMF","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1811.07732&json=true","fetch_graph":"https://pith.science/api/pith-number/SIQXAFMFG5GGAMFG7QRICAF2UH/graph.json","fetch_events":"https://pith.science/api/pith-number/SIQXAFMFG5GGAMFG7QRICAF2UH/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/SIQXAFMFG5GGAMFG7QRICAF2UH/action/timestamp_anchor","attest_storage":"https://pith.science/pith/SIQXAFMFG5GGAMFG7QRICAF2UH/action/storage_attestation","attest_author":"https://pith.science/pith/SIQXAFMFG5GGAMFG7QRICAF2UH/action/author_attestation","sign_citation":"https://pith.science/pith/SIQXAFMFG5GGAMFG7QRICAF2UH/action/citation_signature","submit_replication":"https://pith.science/pith/SIQXAFMFG5GGAMFG7QRICAF2UH/action/replication_record"}},"created_at":"2026-05-18T00:00:23.588188+00:00","updated_at":"2026-05-18T00:00:23.588188+00:00"}