STUDY OF ADAPTIVE CONTROL OF MAIN ENGINE COOLING WATER PUMPS

摘要

In this paper, two kinds of methods regulating the flow rate of main engine cooling water are compared under the consideration of energy saving. It shows that the method of using VVVF-based speed regulator to regulate the rotating speed of the pump motor consumes much less energy than the traditional method of regulating valve position of pump. Then a model of VVVF-based speed regulating system, which works to regulate the flow rate of main engine cooling water, is established. Afterwards, the autocontrol system in the flow rate regulating system of main engine cooling water—neuron-based adaptive control system—is described. And the property of the adaptive control system is compared with that of the traditional autocontrol system—proportional-integral-differential (PID) control system. It can be concluded from the simulation results that the property of neuron-based adaptive control is better than that of PID control, that is, in consideration of energy saving, the neuron-based adaptive control system is more suitable for the flow rate regulating of main engine cooling water.