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  • Design and Control of Hybrid Electric Power System for a Hydraulically Actuated Excavator
    … hydraulic swing motor ωsm Swing motor speed ω̄sm Maximum swing motor speed pcr Cracking pressure of hydraulic swing relief valve ELECTRIC COMPONENTS Pa Engine … … engine assisting motor Pu Ultra -capacitor power P̄u Rated … … capacitor V̄sc (V̱sC) High ( low ) voltage of ultra-capacitor …
  • Efficient Recuperation of Kinetic Energy - Hybrid Versus Hydrostatic Approach
    … the ultra capacitor [m2] d distance between plates of ultra capacitor [m] E kinetic … … vehicle mass [kg] Δp pressure difference over pump/motor [bar … … Internal Combustion Engine LP low -pressure MDB Multiple Disc … … Planetary Gear PRV Pressure Relief Valve RV Retarder Valve SCHT …
  • Process Plant Equipment: Operation Control and Reliability Complete Document
    Pressure gauge, 669 forward-acting, 665 operating ratio, 667 reverse-acting, 666 Pressure relief valve , 665 Pressure vessel, design, 6 Preventative maintenance, 414 Primary creep, 420 Priming, 319 Procedure, 543 Process, 3, 620 Process component function, 6 Process component performance criteria, 6 … … 422 Ultimate strength 459 Ultrafiltration (UF), 90 Ultrasonic analysis, 414 Unit load, 4, 9 – 15, 18 – 19, 21, 23 – 26, 28 Upgrading, 315 Upper and lower yield points, 419 Vacuum … … 553 – 554 water, ultra -pure, 154 Wear, 422 …
  • The development of the UHV a.c. arresters
    THE DEVELOPMENT OF THE GAS INSULATED SWITCHGEAR ULTRA ‐HIGH VOLTAGE METAL‐OXIDE SURGE ARRESTER The Gas Insulated Switchgear (GIS) UHV MOA is composed with tank, upper and lower flange, core components (including the resistors), supporting insulation cylinder, grading rings, insulation tube, insulation terminals, basin insulator, adsorbent, pressure relief devices, pneumatic valve , release valve, and so on …
  • Application of the differential geometric feedback linearization to the speed control of forging machine
    The pressure adjustment relief valve can keep the oil pressure in a constant level and the electromagnetic valve can make the oil circuit on or off and the proportional servo valve can control the speed of the slide block by adjust its … Only one of proportional servo valves is used in the ultra - low speed pressing-down phase.