Control

FMECHANICAL ENGINEERING LIGHTING HEATING WEAPONS BLASTING ENGINES OR PUMPS F05Engines, pumps F05BINDEXING SCHEME RELATING TO MACHINES OR ENGINES OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, TO WIND MOTORS, TO NON-POSITIVE DISPLACEMENT PUMPS, AND TO GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY

F05B2270/00Control

F05B2270/10Purpose of the control system F05B2270/101to control rotational speed (n) F05B2270/1011to prevent overspeed F05B2270/1012to prevent underspeed F05B2270/1013of different spools or shafts F05B2270/1014to keep rotational speed constant F05B2270/1016in variable speed operation F05B2270/102to control acceleration (u) F05B2270/1021by keeping it below damagingly high values F05B2270/1022by making it as high as possible F05B2270/103to affect the output of the engine F05B2270/1031Thrust F05B2270/1032Torque F05B2270/1033Power (if explicitly mentioned) F05B2270/104to match engine to driven device F05B2270/1041in particular the electrical frequency of driven generator F05B2270/105to improve fuel economy F05B2270/1051in particular at idling speed F05B2270/106to produce clean exhaust gases F05B2270/1061with as little smoke as possible F05B2270/1062with as little NOx's as possible F05B2270/1063by monitoring combustion conditions F05B2270/1064indirectly, at the exhaust F05B2270/107to cope with emergencies F05B2270/1071in particular sudden load loss F05B2270/10711applying a low voltage ride through method F05B2270/1072in particular blow-out and relight F05B2270/1073of one engine in a multi-engine system F05B2270/1074by using back-up controls F05B2270/1075by temporary overriding set control limits F05B2270/1076caused by water or hail ingestion F05B2270/108to cope with, or avoid, compressor flow instabilities F05B2270/1081Compressor surge or stall F05B2270/10812caused by working fluid flow velocity profile distortion F05B2270/10815due to high angle of attack of aircraft F05B2270/10817due to compressor degradation F05B2270/109to prolong engine life F05B2270/1091by limiting temperatures F05B2270/1095by limiting mechanical stresses F05B2270/1097by preventing reverse rotation F05B2270/11to maintain desired vehicle trajectory parameters F05B2270/1101Altitude F05B2270/1102Speed or Mach number F05B2270/111to control two or more engines simultaneously F05B2270/15to control thermoacoustic behaviour in the combustion chambers F05B2270/16to control water or steam injection F05B2270/17to avoid excessive deflection of the blades F05B2270/18to control buoyancy F05B2270/19to avoid stroboscopic flicker shadow on surroundings F05B2270/20to optimise the performance of a machine F05B2270/30Control parameters F05B2270/301Pressure F05B2270/3011Inlet F05B2270/3013Outlet F05B2270/3015differential F05B2270/303Temperature F05B2270/3032excessive temperatures F05B2270/304Spool rotational speed F05B2270/305Tolerances F05B2270/309Rate of change of parameters F05B2270/31Fuel schedule for stage combustors F05B2270/32Wind speeds F05B2270/3201"cut-off" or "shut-down" wind speed F05B2270/321Wind directions F05B2270/322the detection or prediction of a wind gust F05B2270/323Air humidity F05B2270/324Air pressure F05B2270/325Air temperature F05B2270/326Rotor angle F05B2270/327Rotor or generator speeds F05B2270/328Blade pitch angle F05B2270/329Azimuth or yaw angle F05B2270/33Proximity of blade to tower F05B2270/331Mechanical loads F05B2270/332Maximum loads or fatigue criteria F05B2270/333Noise or sound levels F05B2270/334Vibration measurements F05B2270/335Output power or torque F05B2270/336Blade lift measurements F05B2270/337Electrical grid status parameters F05B2270/40Type of control system F05B2270/402passive or reactive F05B2270/404active, predictive, or anticipative F05B2270/50Control logic embodiment by F05B2270/502electrical means F05B2270/504electronic means F05B2270/506hydraulic means F05B2270/508mechanical means F05B2270/60Control system actuates through F05B2270/602electrical actuators F05B2270/604hydraulic actuators F05B2270/605Pneumatic actuators F05B2270/606mechanical actuators F05B2270/70Type of control algorithm F05B2270/701proportional F05B2270/702differential F05B2270/703integral F05B2270/704proportional-differential F05B2270/705proportional-integral F05B2270/706proportional-integral-differential F05B2270/707fuzzy logic F05B2270/708with comparison tables F05B2270/709with neural networks F05B2270/80Devices generating input signals F05B2270/802Calibration thereof F05B2270/803Sampling thereof F05B2270/804Optical devices F05B2270/8041Cameras F05B2270/8042Lidar systems F05B2270/805Radars F05B2270/806Sonars F05B2270/807Accelerometers F05B2270/808Strain gauges Load cells F05B2270/809Encoders F05B2270/81Microphones F05B2270/821Displacement measuring means