Distributed Engine Control Design Considerations

Various distributed engine control architectures are presented. Different elements of this architecture include semi-autonomous (aka smart) nodes, digital network communications, data concentrators and electronic controllers. To survive the harsh environment of a turbine engine application, a distributed engine control will require high temperature electronics for its implementation. Several high temperature integrated circuits and a semiautonomous node architecture which incorporates the electronics are presented. These high temperature circuits provide sensor measurement and actuator control interfaces, digital communication, and voltage control and distribution. Next, the authors differentiate between distributed and decentralized controllers and develop a decentralized control design approach based on optimal control theory which can be evolved toward an analysis tool for the control performance of various types of decentralized network configurations.