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ControlFuzzyLib Appendix B Library Objects Overview Table 93. Control module types in ControlFuzzyLib (Continued) Control Module Type TC SIL Description FuzzyPvIn N N This control module makes the process value and its derivative available to the InputMembership control modules. The process value can be filtered in a lowpass filter. Three absolute alarm levels can be displayed in the history and bar graphs. The outputs from the control module, the process value, and its derivative, can be simulated by the operator. This facility can be used to test the fuzzy logic part of the controller. FuzzyOut N N This control module takes a defuzzyfied output from the fuzzy logic part of the controller and computes the output to the process. The signal can be integrated or not. It can also be set in Manual or Automatic mode or it can track an external value. A feedforward signal can be added, and an anti-reset wind-up function is provided. InputMembership N N This control module defines an input membership function for the fuzzy logic part of the controller. For every value of the input it computes the degree of membership to the corresponding fuzzy set. The control module is also used, together with the FuzzyCondition control module, to define the fuzzy conditions. 596 3BSE035981-600
