Структурная схема САУ газотурбинной установки ГТК-10-4

List of abbreviations and their Russian equivalents

Abbrevi-ation	Decoding	Abbrevi-ation	Equivalent in Rusian
ABV	air by-pass valve	КПВ	клапан перепуска воздуха
ACS	automatic control system	САУ	система автоматического управления
ACU	acceleration control unit	АП	автомат приёмистости
AD	automatic device	АУ	автоматическое устройство
CD	control device	УО	управляющий орган
CE (ED)	comparison element	ЭС	элемент сравнения
CF	controlling factors	УФ	управляющий фактор
CO	control object	ОУ	объект управления
CP	controlled parameters	УП	управляемый параметр
CU	control unit	УО	управляющий орган
ED (CE)	error detector	ЭС	элемент cравнения
FFB	flexible (elastic) feedback	ИОС	изодромная (гибкая) обратная связь
GTE   GTP	gas-turbine engine   gas-turbine plant	ГТД   ГТУ	газотурбинный двигатель газотурбинная установка
HM	hydraulic moderator	ГЗ	гидравлический замедлитель
HP	high pressure (rotor)	ВД	высокого давления (ротор)
HPC	high pressure compressor	КВД	компрессор высокого давления
ICG	integral control gear	МОУ	механизм объединённого управления

Abbrevi-ation	Decoding	Abbrevi-ation	Equivalent in Rusian
LP	limited parameters	ОП	ограничиваемые параметры
LP	low pressure (rotor)	НД	низкого давления (ротор)
LPC	low pressure compressor	КНД	компрессор низкого давления
PRL	pressure rise limiter	ОНД	ограничитель нарастания давления
RFB	rigid (proportional) feedback	ЖОС	жесткая обратная связь
SD	set up device	ЗУ	задающее устройство
SE	sensitive element	ЧЭ	чувствительный элемент
SFCU	starting fuel control unit	ТАЗ	топливный автомат запуска
SM	servomechanism	СМ	сервомеханизм
TCL	throttle control lever	РУД	рычаг управления двигателя
TFE	turbofan (bypass) engine	ТРДД	турбореактивный двухконтурный двигатель
TM	tuning mechanism	МН	механизм настройки
TPE	turbo-prop engine	ТВД	турбовинтовой двигатель
VBV	variable bleed valves	КПВ	клапаны перепуска воздуха
VSV	variable stator vanes	РНА	регулируемый направляющий аппарат

Automatic control system block diagram

For the realization of the chosen engine control law in maximum mode, and also for engine operation in other steady and transient modes, an engine ACS is required.

In general case, engine ACS is the combination of the gas turbine plant (ACS of GTP) as CO and the set of the AD – regulators, governors, limiters, automatic control units, which are coordinated (matched) with the GTP by their own parameters and providing their control, that is influence the engine operating process so that to get desired operation characteristics of GTP under all ambient conditions and all operation modes.

ACS of GTP can be represented using: Block diagram, Functional diagram and Schematic diagram.

The block diagram is the system of agreed image of the ACS structure and the way of connection between CO and automatic devices, included in a system.

Each system element in the block diagram is represented as a rectangular inside of which its name is indicated; to the left and to the right there are arrows which show the input and output signals describing its operation (fig.2.1),

Feature of the engine image as CO on the block diagram is such that the input signals acting on it are divided into two big groups: external disturbing effects and controlling influence.

Parameters, describing external disturbing effects, shown in fig.2.1 with general symbol Х_1,i are designated on block diagrams by the arrows located above rectangular CO, with the indication at each arrow the type of disturbing effect (n_hp, n_lp, T_amb, etc). Parameters describing controlling effects on CO from regulators, limiters and other elements of the ACS, are designated in fig.2.1 by symbols Х_5,1, Х_5,2 … Х_5,і are represented by the arrows to the left of CO and there are the inscriptions corresponding to the CF type (W_f - fuel flow rate, j _prop - a propeller blades setting angle, α _IGV - set angle of inlet guide vanes, etc.)

CO output signals are represented by arrows to the right of CO, indicating the type of a signal. In fig. 2.1 all CO output signals are conditionally joint into the following groups: X_2,i - group of the engine controlled parameters, X_3,i - group of limited parameters by which the limitation of engine fuel supply is provided; X_4,i - group of additional parameters, describing the working process or operational mode of a GTE

and necessary for functioning of automatic devices of variable stator vanes (VSV) control, air bypass valves (VBV) control, and also for engine starting system and fuel starting devices operation, etc.

Fig. 2.1. Examples of the main devices representation,

included into the GTE ACS.

Controlling effects from H₆ limiters_{, і} and setting signals from Х_{8, і} adjusting mechanisms can also be input signals of the main regulators alongside with the controlled parameters, conditionally joint in fig.2.1 in the group of parameters X_2,i.

Fig. 2.2. Simplified block-diagram of connection of main automatic
devices with control object

Структурная схема САУ газотурбинной установки ГТК-10-4

Дата добавления: 2015-10-28