3.21 Find the transfer functions for the block diagrams in Fig. 3.54, using the ideas of block diagram simplification. The special structure in Fig. 3.54(b) is called the "observer canonical form" and will be discussed in Chapter 7.D(s) R(s) ? A(s) ? B(s) ? Y(s)H(s)G(s)(d)Figure 3.54Block diagrams for Problem 3.21

Transfer Functions in Simulink, Part 1: Creating and Using Transfer Functions