Model based verification and validation of digital controller performance of a developmental aero gas turbine engine

The verification and validation of Digital Controller performance for a developmental aero engine is achieved through a series of tests, analysis and demonstrations at subsystem level, control system level and finally at aero engine integration level including the ground runs, flight trails. The paper deals with the development of a real-time Controller-In-The-Loop Simulation (CILS) platform to verify and validate the digital controller performance. The CILS built with MATAB /Simulink software, along with tools like Real Time Workshop (RTW) and xPC Target has been commissioned to provide a highly interactive real-time environment for modeling, simulation and analyzing multi-domain, multi-model dynamical systems. The real-time performance capability of the CILS has been demonstrated considering a case study of a typical Compressor Variable Geometry (CVG) position control loop involving plant modelling, analysis and prototyping. Further the validation of CVG control loop performance has been carried out on a developmental aero engine.