外文翻译--锅炉燃烧系统的模糊控制.doc

Faintness controller of burning boiler The text which study series coal powder burning boilers control a scheme, presented heat load system level modules control, and enter the circuit vague courting superior control, simulation results confirm the feasibility of the scheme. Currently, many large domestic plants have adopted computer fire control, and the effect is very good. However, because of our electric energy is very tense, there were many small plants in the pot guarding the plant, especially t-he automatic control system coal powder boilers, and have not been properly addressed. The reason is Coal powder boilers factors to be charged more, strong internal link, external disturbances are frequent and has distinct characteristics and nonlinear characteristics purely lag for automatic control system for high security. Thus the system is a category difficult to control. Although many smallpower plant boilers designed conventional instrumentation system, but did not achieve the desired purpose, and most still use manual control. This is because conventional instruments can only achieve a salt sinks control, not con trolled process changes, not the entire boiler system coordination and control. Development of the mid-1970s .To obscure control theory, Coal powder boiler combustion control system has good performance and achieve giant burning boilers ambiguous control system. Boilers operating system is an important way to achieve automation. Model steam boiler steam drum boiler combustion syst-ems burning pressure is the main target was the transfer of control, causing steam pressure changes a number of factors, such as fuel volume, enter volume, to water, steam flow and the various changes in the nature burn. It is the m-ain disturbance fuel volume change (known as the three), and steam flow changes (known as the three). Changes in the volume of fuel, ignoring some minor factors, the pressure steam boilers similar to the dynamics of the target. Bonus Poin