{"id":"S88000745","label":"PID controllers","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh88000745","normalized_label":"pid controllers","broader":["http://id.loc.gov/authorities/subjects/sh85010089"],"aliases":["Proportional Integral-Derivative controllers","Proportional-plus-Integral-plus-Derivative controllers"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh88000745","provider":"lcsh","revision":"d1ede7ad75cea657","taxonomy_revision":"f050b5d4780b1289","title":"PID controllers","url":"/topics/S88000745","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"14178536983768465988","address_version":"morton4x16-v1","coordinates":[0,20,64291,41984],"answer_status":"Directory metadata; local answer requires separate source review","truth_status":"Subject descriptor, not a factual answer or a demonstrated knowledge gap","reviewed_answer":null}