Documentation Help Center. The Bus Creator block combines a set of input signals into a bus. You can connect any signal types to the input ports, including other buses. You can access signals in a bus by using a Bus Selector block.

Elements of a bus must have unique names. By default, each element of the bus inherits the name of the signal connected to the Bus Creator block. If duplicate names are present, the Bus Creator block appends the port number to all input signal names.

For signals that do not have names, the Bus Creator block generates names in the form signalnwhere n is the port number connected to the signal. You can refer to signals by name when you search for their sources or select signals for connection to other blocks.

For signal naming guidelines, see Signal Names and Labels. Input signal to include in the bus, specified as a scalar, vector, matrix, N -D array, or bus. The number of input ports is driven by the Number of inputs parameter.

Data Types: single double int8 int16 int32 int64 uint8 uint16 uint32 uint64 Boolean fixed point enumerated bus Complex Number Support: Yes. Output bus composed of the combined input signals, specified as a virtual or nonvirtual bus.

For more information on the types of buses, see Types of Composite Signals. Number of input signals, not fewer than two, specified as an integer. Increasing the number of inputs adds empty input ports to the block. Before you simulate the model, make sure that an input signal is connected to each input port. When you modify the Number of inputs parameter, click Refresh to update the list of signals.

If all input ports are already connected, you can add an input port to the Bus Creator block by connecting another signal line to it. Interactively adding a port updates the Number of inputs parameter and adds the new signal to the list of signals in the bus.Documentation Help Center.

The generated function defines object properties in a cell array of cell arrays, then creates the Bus objects by calling Simulink. The function can define object properties using cell arrays or arrays. Use the Simulink. For a function that is formatted to be easier to read, specify the function format as 'object'. To save only one of the Bus objects in a function, specify the Bus object name. Name of function to generate, specified as a character vector.

The file name must be unique. Example: Simulink. Format of function to generate, specified as either 'cell' or 'object'.

simulink bus

The 'cell' format is more compact, but the 'object' format is easier to read. The 'cell' format saves the Bus object definitions in a cell array of cell arrays and creates the Bus objects by calling Simulink. Each subordinate cell array represents a Bus object and contains these properties:. The elements field is a cell array that contains this information for each of the Simulink.

BusElement objects that the Bus object references:. The 'object' format saves the Bus object definitions as arrays. The function uses array indexing to access elements of the array and dot notation to assign property values. When you specify a cell array of Bus object names, only the specified Bus objects are saved. When you specify an empty cell array, all Bus objects are saved. Use an empty cell array to save all Bus objects in the data dictionary specified by scope.

Data dictionary, specified as a Simulink. Dictionary object. Before you use this argument, represent the dictionary with a Simulink. Dictionary object by using, for example, the Simulink. In a future release, the SampleTime property of Simulink. BusElement objects will be removed. When defining BusElement objects, use the default SampleTime value To specify the sample time for an element of a bus, use the SampleTime block parameter of corresponding blocks.

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Single Machine Infinite Bus System Simulink Matlab - Transient response - Synchronous Generator

Search MathWorks. Off-Canvas Navigation Menu Toggle.Documentation Help Center. A bus can be associated with a Simulink. Bus objects are optional for virtual buses, but required for nonvirtual buses. A Bus object specifies only the architectural properties of a bus, as distinct from the values of the signals it contains.

For example, a Bus object can specify the number of elements in a bus, the order of those elements, whether and how elements are nested, and the data types of constituent signals; but not the signal values. A Bus object is analogous to a structure definition in C: it defines the members of the bus, but does not create the bus.

A Bus object is also similar to a cable connector. The connector defines all the pins and their configuration and controls what types of wires can be connected to it. Similarly, a Bus object defines the configuration and properties of the signals that the associated bus must have. Using Bus objects in a model involves performing these tasks, in many cases iteratively.

Determine Whether to Use Simulink. Bus Objects. Determine How to Manage Simulink. Create and Specify Simulink. Save Simulink. Map Simulink. Bus Objects to Models. You must use Bus objects for these modeling configurations:. You can associate a Bus object with multiple blocks. Some blocks require that you specify a Bus object if the block has a bus input or output.

When a Bus object governs a signal input or output for a block, the signal must be a bus that has the properties specified by the object. Any variance causes an error.

Data Store Memory. Data Store Read. Data Store Write. From Workspace. Inport top-level. Interpolation Using Prelookup.

simulink bus

Outport top-level. If you use Bus Creator block parameters to specify bus properties, all blocks downstream from the bus inherit the same properties. You can use Bus Creator block parameters to define virtual buses and perform limited error checking. To perform thorough error checking on a bus, associate a Bus object with that bus. Using Bus objects to check buses for errors is important when you want to create reusable and shareable model components.

To make tracing the correspondence between the model and the generated code for a bus easier, use a nonvirtual bus. The generated code for a nonvirtual bus produces a structure. Nonvirtual buses can result in multiple copies of some buses.Documentation Help Center. The Bus Selector block outputs the signals you select from the input bus. The block can output the selected elements separately or in a new virtual bus.

For arrays of buses, you must use a Selector block to select the bus that you want to use with the Bus Selector block. For each output signal, this block uses a separate port from the top to the bottom of the block. If the block is rotated, see Port Location After Rotating or Flipping for the port order of various block orientations.

Data Types: single double int8 int16 int32 int64 uint8 uint16 uint32 uint64 Boolean fixed point enumerated bus Complex Number Support: Yes. If you change a signal name while the Block Parameters dialog box is open, you can see the updated name by clicking Refresh. To highlight the source of a signal entering the block, select the signal in the list and click Find.

Search term for filtering displayed input signals, specified as text. Do not enclose the search term in quotation marks. The filter does a partial string search. To access the filtering options, click the Show filtering options button to the right of the Filter by name box.

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To access this parameter, click the Show filtering options button on the right side of the Filter by name box. Option to display filtered results as a flat list that uses dot notation to reflect the hierarchy of buses.

By default, the filtered signals appear in a hierarchical tree. To specify an output signal, select a signal from the Signals in the bus list, and then click the Select button. The signal is added at the end of the Selected signals list.

simulink bus

To add signals below an existing signal, select a signal in the Selected signals list before you click Select. Signals are added below the signal you selected.

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If an output signal listed in the Selected signals list is not an input to the Bus Selector block, the signal name starts with three question marks???

To change the order of the output bus elements, use the Up and Down buttons. Port connectivity with downstream blocks is maintained when you change the signal order. To remove bus elements from the block output, use the Remove button. You can select multiple contiguous signals to move or remove. In the Simulink Editor, as you draw a new signal line close to the output side of a Bus Selector block when all output ports are already connected, Simulink:. A bus input is not connected to the Bus Selector block.

You do not specify a signal in response to the prompt that appears when you draw a signal line close to the Bus Selector block icon. You select the Output as virtual bus parameter. By default, the block outputs each of the selected elements from a separate output port that is labeled with the corresponding bus element name. When this parameter is enabled, the block outputs the selected elements from one port, grouped in a virtual bus. The output bus is virtual.

To convert the output to a nonvirtual bus, insert a Signal Conversion block after the Bus Selector block. Bus object. When the Selected signals list includes only one signal and you enable Output as virtual busthen that signal is not wrapped in a bus. For example, if the signal is a bus, the output signal is that bus. If the signal is not a bus, the output signal is not a bus. Boolean bus double enumerated fixed point integer single string.Documentation Help Center.

You can combine signals into a bus and then access the bus as a whole or select specific signals from the bus. For comparison, a nonvirtual Simulink bus is analogous to a struct in C code. Not all blocks can accept buses and some blocks implicitly convert buses to vectors. To learn which blocks support which types of buses, see Bus-Capable Blocks. To identify bus conversions, see Manage Bus-to-Vector Conversions.

How you create virtual buses differs based on the location of the signals that you want to group. Group Signal Lines Within a Component. Connect Multiple Output Signals to a Port. To focus on fundamental steps, these examples are simple, however, buses are most useful when you have many signals to combine. When you create a bus, the line style updates when you simulate the model or, on the Modeling tab, click Update Model.

This example shows how to group signals into a virtual bus using Bus Creator blocks. To create a bus that contains the signals from multiple blocks, drag to select the blocks. For this example, select the Chirp Signal and Sine Wave blocks. In the action bar that appears, click Create Bus.

Simulink adds a Bus Creator block and connects the input signals to that block.

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The output of the Bus Creator block is a virtual bus. To make it easier to identify the elements of the bus, label the input signals to the Bus Creator block. Label the output signal of the Chirp Signal block by double-clicking the signal line and entering Chirp. Similarly, label the output signal of the Sine Wave block Sine. To create a second bus that contains the first bus and the output signal of the Step block, drag to select the Bus Creator and Step blocks.

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Since the Sine and Chirp signals are elements of the input bus, Simulink creates the same bus regardless of whether your selection includes the Sine Wave and Chirp Signal blocks. Simulink adds another Bus Creator block and connects the input signals to that block.Documentation Help Center. Bus objects for the specified blocks and returns information about the created Bus objects. These Bus objects are created in the base workspace or, if available, the data dictionary used by the model.

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SimulationDatastore objects or a numeric structure. The function can define object properties using cell arrays or arrays. Create a Bus object that corresponds with the bus created by the Bus Creator block.

Create Bus objects from two Bus Creator blocks and save the Bus object definition in a function. Assign the block handle for the Bus Creator block to a variable with the getSimulinkBlockHandle function. Alternatively, you can select a Bus Creator block in the model then use the gcbh function to get its block handle. To create a Bus object, specify the block handle variables in a vector.

Simulink.Bus

To save the Bus object definition, also specify a file name. Since these Bus Creator blocks create a bus hierarchy, specifying only the Bus Creator1 block creates both Bus objects in the Workspace and in the function. Compare the BusObjectFunction against the function created by this command. For a function that is formatted to be easier to read, specify the function format as object.

Blocks associated with buses, specified as a character vector, cell array of block path names, or vector of block handles. For one block, specify the full path name of the block. For multiple blocks, specify either a cell array of block path names or a vector of block handles. If you specify a block associated with a bus hierarchy, the function also creates Bus objects for all nested buses in the hierarchy.

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Name of function being generated, specified as a character vector. The file name must be unique. Format of function being generated, specified as either 'cell' or 'object'. The 'cell' format is more compact, but the 'object' format is easier to read.

The 'cell' format saves the Bus object definitions in a cell array of cell arrays and creates the Bus objects by calling Simulink. Each subordinate cell array represents a Bus object and contains these properties:.

The elements field is a cell array that contains this information for each of the Simulink. BusElement objects that the Bus object references:. The 'object' format saves the Bus object definitions as arrays.

The function uses array indexing to access elements of the array and dot notation to assign property values. Data dictionary, specified as a Simulink.

Dictionary object. Before you use this argument, represent the dictionary with a Simulink. Dictionary object by using, for example, the Simulink.

Bus information for the specified blocks, returned as a structure array. Each element of the structure array corresponds to one block and contains these fields:.Documentation Help Center. To interactively create a Simulink. Bus object, and the Simulink. To simulate a block that uses a Bus object, the Bus object must be in the base workspace or in a data dictionary.

For details, see Create Bus Objects Programmatically. You can use the Bus Editor to change and delete existing Bus objects and bus elements. The Bus Editor displays all Bus objects in the base workspace.

Changes that create, reorder, or delete entities take effect immediately in the base workspace. The Bus Editor does not provide an undo capability. Changes to properties take effect when you apply them.

Bus Objects. On the Modeling tab, in the Design gallery, click Bus Editor. This bus contains two signals as elements. In the Bus Editor, click the Add Bus button. A Bus object with a default name appears in the left pane and its default properties appear in the Simulink. Bus dialog pane. Specify the name for the Bus object using the Name property. For easy identification, use a name that reflects the bus associated with the bus object. Click Apply after editing properties or choose to automatically apply changes when you click a different object.

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In the Simulink. The properties on the Signal Attributes tab match the default BusElement object properties, so no change is required. The Output data type specified by the Constant1 block is int8which does not match the default BusElement object properties.

Any signal in a bus can be another bus, which can in turn contain subordinate buses, to any depth. Describing nested buses using Bus objects requires nesting the Bus object definitions. This example shows how to nest a Bus object that corresponds to the control bus in a Bus object that corresponds to the main bus. Create a Bus object named MAIN that fully specifies the main bus, temporarily using default values for the BusElement object that specifies the nested control bus.

A Bus object cannot directly or indirectly reference itself. If you define a circular structure, the Bus Editor warns you and sets the data type of the element that would have completed the circle to double. To edit a Bus object or BusElement object:. Bus or Simulink. BusElement dialog pane, edit the object properties.

When you have a Bus object selected, you can edit its BusElement objects in the middle pane.


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