Control algorithm for PID controller e.g. for secondarily controlled hydrostatic drives

摘要

In this new concept of regulation all the components mentioned above dYI.k'(132), dYP.k'(131), dYD.k'(132) are continuously stored in a memory and added to a constant Y.k-1' (123) forming the control element Y.k'(123), where Y.k-1 represents the output value of the previous beat. dYP.k'=KP'* xw.k is the proportional component, dYI.k'=Ki'* xw.k* dta, the integral component, dYD.k'=KD'* dxw.k/dta, the differential component, and xw is the regulation deviation. The new algorithm is Y.k'=Y.k-1'+dYP.k'+dYI.k'+dYD.k' and the k factors are really subscripts.