4.4.3. Model of the Control System A typical model of the control system in angular stabilization mode may be represented in the form of a relay, at the input of which are the sum of signals of angular misalignment and angular velocity The characteristics of the relay and the engines of the jet control system, as well as the feedbacks are shown in Figure 4.5. The length of the pulse of the engines may not be less than some minimum value . In the analysis of docking wc also model the effect of the jet control system engines along the longitudinal axis which arc turned on at first contact and which create force which aids linkage. Figure 4.5. Schematic of the control system model, a. object of control. After linkage and the cessation of displacements of the longitudinal and transverse shock absorbers the parameters of the process vary significantly more slowly. Thus, the value of the control momentum can be defined by its average value in period r:
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