| 摘要 |
A device and method are described with which a function generator output can be automatically obtained based on a meaningful reference input signal and updated as required in conjunction with a controller which regulates a process such as a variable element or a variable setpoint or the like. The device samples the controller setpoint, output and the input index. A memory section is used to store output values that were last found correct for the input index and are retrieved whenever said index value is encountered. The retrieved last-correct value for a particular input index is corrected with a modifier that is derived from a representative controller setpoint and controller output to produce a currently-correct output for regulation of the process. The last correct value for any one particular input index value is only updated after the latter index has changed so as to avoid interference with the normal operation of the controller. Several embodiments are described.
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