Schedule Model Components

Create export-function, rate-based models, and partitions to schedule model for code generation

Scheduling model components for simulation or integration with an external scheduler requires the algorithms to be placed in Atomic Subsystem or Model blocks. The execution rate is then specified as either periodic (scheduled subsystem) or nonperiodic (function-call subsystem).

Partitions are components of a model that execute independently as atomic tasks. In multitasking models, partitions are created from model components. With partitions, you can separate parts of the model that you can explicitly control in the Schedule Editor tool.

The Schedule Editor is a scheduling tool that represents the components in the model known as partitions, the data connections between them, and the ordering of those partitions. The Schedule Editor can only be used on existing components, such as atomic subsystems, export functions, and model blocks. The Schedule Editor is an interactive tool that provides an easy way to view and edit the schedule of the model components.

Blocks

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Function-Call Subsystems

Function-Call Subsystem	Subsystem whose execution is controlled by an external function-call input
Function-Call Generator	Provide function-call events to control execution of a subsystem or model
Function-Call Split	Provide junction for splitting function-call line
Function-Call Feedback Latch	Break feedback loop involving data signals between function-call blocks
Trigger	Add trigger or function port to subsystem or model

Scheduled Subsystems

Subsystem	Group blocks to create model hierarchy
Inport	Create input port for subsystem or external input

Tools

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Schedule Editor

View and edit the schedule of model components (partitions)

Classes

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Schedule Editor

simulink.schedule.OrderedSchedule Creates an OrderedSchedule object containing priority order of the partitions of a model

Functions

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Schedule Editor

simulink.schedule.createSchedule Create a new schedule using provided schedule and ordering

Topics

Export-Function Models

Export-Function Models Overview

Overview of export-function models and requirements for building models.

Create an Export-Function Model

First step for creating independent functions in the generated code.

Test Export-Function Model Simulation Using Input Matrix

Use an input matrix to specify and test function-call event scheduling.

Test Export-Function Model Simulation Using Function-Call Generators

Use multiple Function-Call Generator blocks to test function-call event scheduling.

Test Export-Function Model Simulation Using Stateflow Chart

Use a Stateflow chart to test function-call event scheduling.

Test Export-Function Model Simulation Using Schedule Editor

Use the Schedule Editor to test function-call event scheduling.

Generate Code for Export-Function Model

Generate code for functions that can be integrated with an external scheduler.

Generate Code for Export-Function Model with Rate-Based Model

Generate code from models with function-call and scheduled subsystems.

Rate-Based Models

Rate-Based Models Overview

Specify scheduling of subsystem or model.

Create A Rate-Based Model

Set periodic rates for subsystems.

Test Rate-Based Model Simulation Using Function-Call Generators

Simulate rate-based model.

Generate Code from Rate-Based Model

Generate code from the rate-based model, not from the model test harness.

Execution Order

Control and Display Execution Order

Determine the execution order among blocks within tasks.

Sorting Rules for Explicitly Scheduled Model Components

Simulink^® determines the execution order for model components (subsystems and referenced models).

Partitions with the Schedule Editor

Create Partitions

Learn the concept of partitions and how to create them from a model.

Schedule the Partitions

Learn about the order of the partitions and how to edit the schedule.

Generate Code from a Partitioned Model

Learn about the impact of partitioning and editing the schedule on code generation.

Events in Schedule Editor

An event is a construct that represents an action, transition, or condition.

Featured Examples

Resettable Subsystems

What happens when a ramp signal is integrated using two resettable subsystems. After running the simulation, the scope shows three plots.

Open Model

Block Priority

What happens when blocks are assigned different priorities. The block priority affects the order in which the blocks are executed. You can set the block priority through the Block Properties dialog.

Open Model

Create and Analyze Random Schedules for a Model Using the Schedule Editor API

Uses the Schedule Editor API to perform operations on the schedule. Then it uses a function to generate random schedules and analyze them in Simulation Data Inspector

Open Script

Schedule Partitions with Events

Use events to schedule the execution of aperiodic partitions via a Stateflow chart. You can send events from Stateflow and use those events to control the execution of the partitions in the model by using events in Schedule Editor.

Open Live Script

Schedule an Export-Function Model Using the Schedule Editor

View and edit the order of function-calls in an export-function model using the Schedule Editor. As in all export-function models, the desired functionality is modeled as function-call subsystems. These function-call subsystems define the partitions that are scheduled by the Schedule Editor.

Open Script

Schedule a Rate-Based Model Using the Schedule Editor

Partition a rate-based model using the Schedule Editor. Partitions are the components of the model that can execute independently. In this example, we convert the subsystems into partitions and view and edit their schedule.

Open Script