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Coupling Mainly Divided Into

Coupling refers to two or more circuit elements or between the input and output, such as electric network closely and influence each other, and through the interaction between the phenomenon of transfer energy from one side to the other.

Coupling is used as a noun in communication engineering, software engineering, mechanical engineering, etc.

Coupling is mainly divided into the following types

Several coupling

In reality, physical fields are many

Temperature fields, gravitational fields, humidity fields and so on are all physical fields, and many of the problems that we have to solve are the superimposed problems of these physical fields, because these physical fields are directly interacting with each other. For example, when making steel, the temperature has an effect on the stress distribution. The problem of multiple physical fields superimposing is called multifield coupling, which is also a coupling.

The energy coupling

The energy coupling between the primary and secondary of a transformer.

Data coupling

When one module accesses another module, the input and output information are exchanged between each other through simple data parameters (not control parameters, public data structures, or external variables).

Mark coupling

A set of modules pass the record information through the parameter table, which is the tag coupling. This record is a substructure of a data structure, not a simple variable. It's actually the address of the data structure;

Control of the coupling

If a module controls information by transmitting switches, symbols, names, etc., the function of selecting another module is clearly controlled, which is to control the coupling.

The external coupling

A set of modules can access the same global simple variable instead of the same global data structure, and is not referred to as external coupling by passing the information on the global variable through the parameter table.

Common coupling

If a set of modules access the same public data environment, the coupling between them is called public coupling. The public data environment can be global data structure, Shared communication area, memory public coverage area, etc.

The content of coupling

Content coupling occurs when one module directly changes or operates another module's data, or moves directly to another module. At this point, the modified module is completely dependent on modifying its module. If the following occurs, a content coupling occurs between the two modules

(1) a module directly accesses the internal data of another module;

(2) one module does not transfer from normal to another module;

(3) the two modules have some overlap of program code (which can only appear in assembly language);

(4) a module has multiple entries.

Indirect coupling

There is no direct relationship between the two modules, and the connection between them is fully realized through the control and invocation of the main module.

Coupling vibration mode refers to two vibration modes under a certain vibration modal (or on a generalized coordinates direction) vibration input, lead to another under the vibration modal (or another generalized coordinates direction) of the response.

Decoupling is called decoupling. Decoupling aim is to make various degrees of freedom (i.e., the vibration modal) on the vibration of the relatively independent or separation, which can effect on the vibration isolation of degrees of freedom action independently without affecting the other on the direction of degrees of freedom on performance. When the freedom of freedom is independent, the frequency of resonance may be smaller than when there is coupling, especially in the direction of excitation energy.