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P-wire control
| Глоссарий в железнодорожной технике |
An analogue form of electro-pneumatic brake control using a single wire carrying a pulse width modulated signal. the current level on the circuit determines the rate of brake demanded. zero current initiates an emergency brake demand. this type of control can eliminate the need for a brake pipe, a source of much trouble on trains.
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Control, английский
- Commande;réglage
- There are at least three senses of "control" in statistics: a member of the control group, to whom no treatment is given; a controlled experiment, and to control for a possible confounding variable.
- Управление; регулирование
- `logic логическая схема управления
- Any device for regulating a system or component during its normal (manual or automatic) operation; it is responsive, during automatic operation, to the property (such as pressure or temperature) whose magnitude is to be regulated.
- An attempt to guide a borehole to follow a predetermined course through the use of wedges or by manipulation of the drill string.
- A mechanism by which the speed or rate of an operation may be regulated.
- The base or basis by which similar values may be compared.
- Model(l)ing моделирование процессов и методов управления (напр., качеством воды в водных объектах) (сточных вод в водный объект)
- A constraining" (->constraint) effect on a variable, a directing influence on the behavior of a system, or the setting of the parameters of a system. anyone-way communication, which by its definition conditions a receiver`s behavior in some respects, involves control of a receiver by a sender.
- An object that enables user interaction or input, often to initiate an action, display information, or set values.
- Management of a computer and its processing abilities so as to maintain order as tasks and activities are carried out. control applies to measures designed to ensure error-free actions carried out at the right time and in the right order relative to other datahandling or hardware-based activities.
- 50% of the outstanding votes plus one vote.
- See in control; process control; quality control.
- See in control; statistical process control; quality control.
Control, английский
Control, английский
Control, английский
Control, английский
Управляющий
Control, английский
Control, испанский
Menú que contiene una serie de comandos que permiten manejar la ventana. los iconos de aplicación y algunos cuadros de diálogo también tienen un menú control. para abrir el menú control, se utiliza el
Control (i.e., management control), английский
Control (of an asset), английский
Control (of an enterprise), английский
Control -, английский
Система управления
Control abstraction, английский
Абстракция управления
Control account, английский
Control action, английский
Управляющее воздействие; регулирующее воздействие
Control addition, английский
Контрольное суммирование
Control air force specialty code, английский
Контрольный код военно-учетной специальности ввс
Control algorithm, английский
Алгоритм управления
Control alignment mark, английский
Control and data acquisition (cda) systems, английский
Control and data retrieval system, английский
Система запуска, управления и возвращения (дплл многократного применения)
Control and delay channel, английский
Канал управления и запаздывания
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Automatic coupler, английский
An automatic coupler allows two vehicles to be attached to each other merely by pushing the two vehicles together. there are various types and systems in use, which range from a simple automatic mechanical coupler (like the `buckeye coupler` of us origin) to one which is remotely controlled and can connect and secure air and electrical connections in one operation. in europe only used for multiple unit trains and specialised types of rolling stock. the proposed uic auto-coupler was shelved in the 1970s due to cost but germany and france are currently carrying out trials of a traction only auto-coupler.uos careful specification and attention to design detail is required to ensure reliability. one is mindful of problems suffered by muni in san francisco on their boeing lrvs and by eurotunnel and london underground, all of whom use complex automatic couplers. good advice is not to use them unless you really have to and can spend the money on looking after them. automatic couplers are expensive to repair after even minor collisions or `rough shunts` as they are often called to reduce the operating manager`s anger.
Conductor rail, английский
- An additional rail (or rails) provided on those electric railways where power is transmitted to trains from the track. often referred to as the `third rail` or `current rail` , it is normally at positive potential and is mounted on insulators to the outside of and slightly higher than the running rails. the return of the circuit is via the running rails. the current is collected by the train through `shoes`, attached to the bogies, which slide along or under the rail. varieties of the system include top, side and bottom contact rails. top contact rails are susceptible to ice and snow contamination in cold climates and present a certain risk to persons walking on the track. for this reason, bottom contact rails are preferred for modern systems. illustrations and descriptions here. the continuity of conductor rails must be broken at junctions in the track to allow continuity of the running rails. such `gaps` may cause momentary loss of power to the train. there are cases from time to time of trains becoming `gapped` at complex junctions, i.e. they stall over a gap and have to be rescued by another train. london underground has a fourth rail (negative) for a completely insulated circuit. it is known as a four rail system.
- A rail through which dc electricity is supplied to electric trains operating on the third rail system.
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