# Difference between revisions of "Errata: The expressions for the PID parameters for the op amp implementation are incorrect"

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{{errata page | {{errata page | ||

− | | chapter = | + | | chapter = PID Control |

− | | page = | + | | page = 310 |

− | | line = | + | | line = -4 |

− | | contributor = | + | | contributor = Seoul National University |

− | | date = | + | | date = 7 Dec 2010 |

| rev = 2.10d | | rev = 2.10d | ||

| version = Third printing | | version = Third printing | ||

| text = | | text = | ||

+ | The expressions listed in the text correspond to the case when <math>C_1</math> is small (a common choice). The correct expressions for the general case are | ||

+ | <center><amsmath> | ||

+ | k_p = \frac{R_1 C_1 + R_2 C_2}{R_1 C_2}, \qquad | ||

+ | T_i = R_1 C_1 + R_2 C_2, \qquad | ||

+ | T_d = \frac{R_1 R_2 C_1 C_2}{R_1 C_1 + R_2 C_2}. | ||

+ | </amsmath></center> | ||

}} | }} |

## Latest revision as of 19:06, 28 August 2011

Return to Errata page |

Location: page 310, line -4

The expressions listed in the text correspond to the case when is small (a common choice). The correct expressions for the general case are

(Contributed by Seoul National University, 7 Dec 2010)