# Difference between revisions of "Errata"

This page contains information about errata for Feedback Systems. The errata listed here include all known and corrected errors since the first printing of the book.

Conventions:

• Each line of text and each line of a displayed equation are counted as a line. Negative line numbers mean number of lines from the bottom of the page. First line on page = 1, last line on page = -1.
• Entries in boldface indicate errors which might change the interpretation of the text.
• The version refers to the release number in which the error was found. Errors are corrected in all subsequent releases of the text.

Page Line Erratum Version
106   7   Solution for x_2j in block diagonal form discussion has sign errors N/A
108   8   Missing γ in equation (4.9) N/A
112   -1   In Example 4.9, V(x) should be V(z) N/A
117   3   Typo in the caption for Figure 4.15 N/A
126   -5   In Exercise 4.1, x_0 should not be subtracted from time-shifted solution N/A
129   -2   In Exercise 4.14c, the transformation T and its inverse are swapped N/A
131   -15   Extraneous text "!linear" in Section 5.1 N/A
135   12   In equation (5.5), the upper limit of the integral should be t N/A
144   -7   Example 5.5 includes a damping term not shown in Figure 5.4 N/A
145   5   In Examples 5.5 and 5.6, dynamics in modal form should use z, not x N/A
149   8   In Examples 5.5 and 5.6, dynamics in modal form should use z, not x N/A
169   -12   In heuristic derivation of reachability test, α is missing subscript N/A
181   9   Missing 's' in expression for characteristic polynomial in discussion of eigenvalue assignment N/A
220   12   In computation of error dynamics, u_ff argument is missing N/A
224   -7   References to first and second equations are switched in computer implementation discussion N/A
240   -11   Explanation of the lack of zeros when B or C is full rank is confusing N/A
241   -4, -6   In Example 8.5, q should be replaced by theta N/A
249   3   Location of the process pole is missing a zero in figure caption for cruise control example N/A
277   13   In Theorem 9.3, N should be Z N/A
311   -3   Missing ydot after equation (10.16) N/A
319   0   Arrow labeled u_fd in Figure 11.3 is in the wrong direction N/A
319   -7   Extraneous text "!design" in Chapter 12 N/A
323   -9   Maximum sensitivity occurs at frequency omega_ms not omega_sc N/A
336   -8   Extraneous text "!design" in Chapter 12 N/A
356   6, 12   In Example 12.6, n = -1 should be n = 1 N/A
369   -1   Extraneous text "!design" in Chapter 12 N/A