GUIDELINES USING MATLAB. ®.,. Simulink. ®., and Stateflow. ®. Version MathWorks Automotive Advisory Board. (MAAB). July 27 th. All versions of the Architectural Access Board’s regulations ( CMR) – Present. The MAAB Control Algorithm Modeling Guidelines (MathWorks Automotive Advisory Board)[3] is a well established set of publicly available rules for modeling.

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Comparison operation in Stateflow. Flowchart patterns for condition actions Description Use the following patterns for If constructs within Stateflow Flowcharts: Flowchart patterns for loop constructs Description Use the maqb patterns to create Loops within Stateflow Flowcharts: Usable characters for Subsystem names Description The names of all blocks should conform to the following constraints: Display of labels on signals – Mux block Subsystem block Chart block Note Block icon exception applicable only where called out: Setting the return value from a graphical function ID: Format of entries in a State block Incorrect Failed to start a new line after en, du, and ex.

Transition Action At every junction, except for the last junction of a flow diagram, exactly one unconditional transition begins. The parameters must be defined in the base workspace.

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Control flow signals are output from: Reuse of variables within a single Stateflow scope ID: Based on your location, we recommend that you select: Use of Switch vs. Check usage of restricted variable names. Size px x x x x If there is a need to store the result of a logical condition test in a Simulink model, for example, maah storing a flag, this is an indicator of the presence of modal logic, which should be modeled with Stateflow software.


In the following figure, Type A shows the use of a trigger level while Type B shows a model without a trigger level. If the signal label is visible in the originating block icon guodelines, the connected signal does guidelinees need to have the label displayed, unless the signal label is needed elsewhere due to a destination-based rule.

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Maab Guidelines – Free Download PDF

Use of the Switch block ID: Some of the preceding guidelines refer to basic blocks. Examples Some examples of vector signals include: Flowchart patterns for case constructs Description Use the following patterns must be used for case constructs within Stateflow Flowcharts: Unconnected signals, block inputs and block outputs ID: Simulink patterns for case constructs.

Replace switch constructs that have more than 3 levels with an If-Then-Else action subsystem construct. Equivalent Functionality One condition: Use of the Sum block ID: The most common example of a vector signal is sensor or actuator data that is grouped into an array indexed by location.

Grouping data flows into signals ID: Setting the return value from a graphical function. The automated translation of this page is provided by a general purpose third party translator tool. Bitwise Stateflow operators ID: Models should be built only from these blocks. Guidelins of patterns for flow charts.


Translated by Mouseover text to see original. Check transition orientations in flow charts. State machine patterns for transition actions.

Correct Variable of loop counter must not be used other than loop counter. Use of only standard library blocks.

Display of block names. Guidelines for mixed use of Simulink and Stateflow. When possible, use zero-based indexing to improve code efficiency. Exception A logical expression may contain more than two primary expressions if both of the following are true: Usable characters for block names ID: You can run the checks using the Model Advisor. Check whether block names appear below blocks. This is machine translation Translated by.

A naming convention provides guidance for naming blocks, signals, parameters and data types. Port block name visibility in Simulink models ID: Prohibited Simulink standard blocks inside controllers The following additional blocks are not allowed.

Transitions in Flowcharts ID: In this presentation of the MAAB guidelines, MathWorks includes a Model Advisor check field in guideline descriptions, which contains the title of and a link to the corresponding Model Advisor check, if a check exists.