Difference between revisions of "Errata"

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{{errata item|page=169|line=-12|title=In heuristic derivation of reachability test, α is missing subscript}}
 
{{errata item|page=169|line=-12|title=In heuristic derivation of reachability test, α is missing subscript}}
 
{{errata item|page=181|line=9|title=Missing 's' in expression for characteristic polynomial in discussion of eigenvalue assignment}}
 
{{errata item|page=181|line=9|title=Missing 's' in expression for characteristic polynomial in discussion of eigenvalue assignment}}
 +
{{errata item|page=188|line=-2|title=Dynamics matrix in Example 6.7 has errors in (3,4) and (4,4) entries}}
 
{{errata item|page=198|line=14|title=In Exercise 6.4, need to assume A is invertible and C A^-1 B is nonzero}}
 
{{errata item|page=198|line=14|title=In Exercise 6.4, need to assume A is invertible and C A^-1 B is nonzero}}
 
{{errata item|page=200|line=9|title=In Exercise 6.13, R should be removed and rho should be rho_1}}
 
{{errata item|page=200|line=9|title=In Exercise 6.13, R should be removed and rho should be rho_1}}

Revision as of 19:33, 15 November 2008

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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
19   -11   The Wright brothers made their first successful flight in 1903, not 1905 N/A
62   -6   In Exercises 2.5 and 5.9, the (2,1) entry of the dynamics matrix should be ab-b N/A
63   -8   In Exercise 2.7, reference to inverted pendulum may be confusing N/A
91   -6   In Exercise 3.2: use observable form, delta is the steering angle and "title" should be "tilt" N/A
92   -9   State space dynamics in Exercise 3.5 are not correct N/A
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
126   -5   In Exercise 4.1, tau should be defined as t-t_0 N/A
127   5   In Exercise 4.2, a_e should be a N/A
127   15   Sign error in second Lyapunov function in Exercise 4.4 N/A
128   3   In Exercise 4.6, Pm/J should be taken as 1 and factor of 1/2 is misplaced 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
156   -10   In AFM dynamics, c and k are missing subscript 2 N/A
164   -11   Parameter values are missing in Exercise 5.3 N/A
164   -3   Remove part (a) in Exercise 5.6 N/A
165   11   In Exercise 5.7, the 5% settling time should be 3 tau instead of 2 tau N/A
166   3   In Exercises 2.5 and 5.9, the (2,1) entry of the dynamics matrix should be ab-b 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
188   -2   Dynamics matrix in Example 6.7 has errors in (3,4) and (4,4) entries N/A
198   14   In Exercise 6.4, need to assume A is invertible and C A^-1 B is nonzero N/A
200   9   In Exercise 6.13, R should be removed and rho should be rho_1 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   -16, -13   Sign error in equation (8.17) - (sI - A) should be (A - sI) 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
256   1   Caption for Figure 8.15b is missing an s in the numerator N/A
277   13   In Theorem 9.3, N should be Z N/A
288   -3   Exponential signal is incorrect on the left-hand side of harmonic expansion equation N/A
292   18   In Exercise 9.9, 10/a should be 1/tau N/A
307   -9   Toward end of Section 10.4, k_i should be k_t N/A
311   -3   Missing ydot after equation (10.16) N/A
314   -5   Dynamics for x_2 should test for e less than e_0, not e less than 1 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
345   12   Exercise 11.4 should be Example 11.4 in Exercise 11.9 N/A
345   14   T_d should be T_f in Exercise 11.9 N/A
345   -5   Numerator and denominator are switched in Exercise 11.11 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