S george lee purdue univ block diagrams signal flow

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: ock Diagrams & Signal-Flow Graphs ECE382 7 / 31 This is the advantage of a feedback control system. C1 (s) G1 (s)G2 (s) 1 R(s) D(s)=0 G1 (s)G2 (s)H(s) H(s) C. S. George Lee (Purdue Univ.) Block Diagrams & Signal-Flow Graphs Hence, it is independent of G1 (s)G2 (s). If H(s) 1, then C1 (s) = R(s); we have output tracks the input. ECE382 8 / 31 Block Diagram Reduction and Algebra Block Diagram Reduction Example C. S. George Lee (Purdue Univ.) Block Diagrams & Signal-Flow Graphs ECE382 9 / 31 C. S. George Lee (Purdue Univ.) Block Diagrams & Signal-Flow Graphs ECE382 10 / 31 Signal Flow Graphs The block diagram is useful for graphical representation of a control system. However, for a very complicated system, the block diagram reduction method to find the overall transfer function becomes too time consuming. We shall use an alternative method involving signal flow signal flow graph. A signal flow graph is a pictorial representation of a set of simultaneous linear algebraic equations describing a system. A signal flow graph is a Laplace-transform domain manipulation. A signal flow graph consists of a network in which nodes are connected by directed branches. Each node represents a system variable or signal, and each branch connected between 2 nodes acts as a signal multiplier. C. S. George Lee (Purdue Univ.) Block...
View Full Document

This note was uploaded on 02/05/2012 for the course ECE 382 taught by Professor Staff during the Fall '08 term at Purdue University-West Lafayette.

Ask a homework question - tutors are online