Overview Block Diagram Model Representation PI Controller Position Command (fr actuator control) First Order Lag 目一 Servo valve Spring Force Two Chamber Actuator (w pressure state) S Global Fluid Properties Conditions(P, D FIxed ofice Fluid P=1.10 Constant pressure Each box represents the behavior of a system elements Blocks from MSC EASY5 GP library generic integrators, summing junctions, etc. Components from application libraries- pipes, pumps, motors, etc. Connection arrows between blocks represent interactions between system element Interaction(information flow) may be single-or bi-directional EAS102. December 2005 pyright@ 2005 MSC Software Corporation Chart 5EAS102, December 2005 Copyright© 2005 MSC.Software Corporation Chart 5 Constant pressure Servo Valve (w pressure state) 1 First Order Lag .01s+1 P=1.105 source PI Controller (for actuator control) KP=10 KI=.025 50 -50 S2 GB Two Chamber Actuator S2 LA Position Command Spring Force command Fixed orifice Upstream Boundary Conditions (P, T) P = 100 T = 50 Global Fluid Properties Hydraulic Fluid 4 SPRFORC Actuator_pos Overview Block Diagram Model Representation Each box represents the behavior of a system elements Blocks from MSC.EASY5 GP library – generic integrators, summing junctions, etc.. Components from application libraries – pipes, pumps, motors, etc. • Connection arrows between blocks represent interactions between system element Interaction (information flow) may be single- or bi-directional