Control

FMECHANICAL ENGINEERING LIGHTING HEATING WEAPONS BLASTING ENGINES OR PUMPS F05Engines, pumps F05DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS

F05D2270/00Control

F05D2270/01Purpose of the control system F05D2270/02to control rotational speed (n) F05D2270/021to prevent overspeed F05D2270/022to prevent underspeed F05D2270/023of different spools or shafts F05D2270/024to keep rotational speed constant F05D2270/03in variable speed operation F05D2270/04to control acceleration (u) F05D2270/042by keeping it below damagingly high values F05D2270/044by making it as high as possible F05D2270/05to affect the output of the engine F05D2270/051Thrust F05D2270/052Torque F05D2270/053Explicitly mentioned power F05D2270/06to match engine to driven device F05D2270/061in particular the electrical frequency of driven generator F05D2270/07to improve fuel economy F05D2270/071in particular at idling speed F05D2270/08to produce clean exhaust gases F05D2270/081with as little smoke as possible F05D2270/082with as little NOx as possible F05D2270/083by monitoring combustion conditions F05D2270/0831indirectly, at the exhaust F05D2270/09to cope with emergencies F05D2270/091in particular sudden load loss F05D2270/092in particular blow-out and relight F05D2270/093of one engine in a multi-engine system F05D2270/094by using back-up controls F05D2270/095by temporary overriding set control limits F05D2270/096caused by water or hail ingestion F05D2270/10to cope with, or avoid, compressor flow instabilities F05D2270/101Compressor surge or stall F05D2270/102caused by working fluid flow velocity profile distortion F05D2270/1022due to high angle of attack of aircraft F05D2270/1024due to compressor degradation F05D2270/11to prolong engine life F05D2270/112by limiting temperatures F05D2270/114by limiting mechanical stresses F05D2270/116by preventing reverse rotation F05D2270/12to maintain desired vehicle trajectory parameters F05D2270/121Altitude F05D2270/122Speed or Mach number F05D2270/13to control two or more engines simultaneously F05D2270/14to control thermoacoustic behaviour in the combustion chambers F05D2270/16to control water or steam injection F05D2270/17to control boundary layer F05D2270/172by a plasma generator F05D2270/173by the Coanda effect F05D2270/18using fluidic amplifiers or actuators F05D2270/20to optimize the performance of a machine F05D2270/30Control parameters F05D2270/301Pressure F05D2270/3011Inlet pressure F05D2270/3013Outlet pressure F05D2270/3015differential pressure F05D2270/303Temperature F05D2270/3032excessive temperatures F05D2270/304Spool rotational speed F05D2270/305Tolerances F05D2270/306Mass flow F05D2270/3061of the working fluid F05D2270/3062of the auxiliary fluid for heating or cooling purposes F05D2270/309Rate of change of parameters F05D2270/31Fuel schedule for stage combustors F05D2270/311Air humidity F05D2270/312Air pressure F05D2270/313Air temperature F05D2270/331Mechanical loads F05D2270/332Maximum loads or fatigue criteria F05D2270/333Noise or sound levels F05D2270/334Vibration measurements F05D2270/335Output power or torque F05D2270/336Blade lift measurements F05D2270/40Type of control system F05D2270/42passive or reactive F05D2270/44active, predictive, or anticipative F05D2270/46redundant F05D2270/50Control logic embodiments F05D2270/52by electrical means F05D2270/54by electronic means F05D2270/56by hydraulic means F05D2270/58by mechanical means F05D2270/60Control system actuates means F05D2270/62Electrical actuators F05D2270/64Hydraulic actuators F05D2270/65Pneumatic actuators F05D2270/66Mechanical actuators F05D2270/70Type of control algorithm F05D2270/701proportional F05D2270/702differential F05D2270/703integral F05D2270/704proportional-differential F05D2270/705proportional-integral F05D2270/706proportional-integral-differential F05D2270/707fuzzy logic F05D2270/708with comparison tables F05D2270/709with neural networks F05D2270/71synthesized F05D2270/80Devices generating input signals F05D2270/802Calibration thereof F05D2270/803Sampling thereof F05D2270/804Optical devices F05D2270/8041Cameras F05D2270/805Radars F05D2270/806Sonars F05D2270/807Accelerometers F05D2270/808Strain gauges Load cells F05D2270/809Encoders F05D2270/81Microphones F05D2270/821Displacement measuring means