Analysis and determination of water level control system of boiler drum

摘要

This paper has discussed the popular method of control and deeply analyzed the dynamic and static characteristics of the water level based on analyzing the main factors influencing the water level of drum. This paper begins with the balance of heat and substance of water in boiler's bubble and educes the universal mechanism controlling model to describe the water level of boiler and studies the character of control model of three pulse. Through an analysis of several kinds of control schemes, study and compare, select impulse three systems as the optimum control scheme, put forth effort to study the characteristic of impulse three systems.