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findChildSys

Powertrain subsystem energy analysis

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Syntax

findChildSys(PlantInfoObj,SubSystem)

Description

The findChildSys(PlantInfoObj,SubSystem) method finds and returns an autoblks.pwr.PlantInfo object for the subsystem. Use the autoblks.pwr.PlantInfo object to evaluate and report power an energy for component-level blocks and system-level reference applications.

After you use the run method to analyze the powertrain power and energy, use the findChildSys method to evaluate specific subsystems.

example

Examples

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Analyze the power and energy in the conventional vehicle reference application. To use the findChildSys method to analyze the engine and drivetrain subsystems, see step 6 and step 7.

Open the conventional vehicle reference application. By default, the application has a mapped 1.5 L spark-ignition (SI) engine and a dual clutch transmission. Project files open in a writable location.

autoblkConVehStart

Set the system name to ConfiguredConventionalVirtualVehicle.

Create the autoblks.pwr.PlantInfo object.

Use the PwrUnits and EnrgyUnits properties to specify the units.

SysName = 'ConfiguredConventionalVirtualVehicle';
VehPwrAnalysis = autoblks.pwr.PlantInfo(SysName);
VehPwrAnalysis.PwrUnits = 'kW';
VehPwrAnalysis.EnrgyUnits = 'MJ';

Use the run method to turn on logging, run simulation, and add logged data to the object.

run(VehPwrAnalysis);

Use the dispSysSummary method to display the results.

dispSysSummary(VehPwrAnalysis);

Use the xlsSysSummary method to write the results to a spreadsheet.

xlsSysSummary(VehPwrAnalysis,'EnergySummary.xlsx');

Use the findChildSys method to retrieve the autoblks.pwr.PlantInfo object for the Engine subsystem.

To display the results, use the dispSignalSummary method.

Use the histogramEff method to display a histogram of the time spent at each engine plant efficiency.

EngSysName = SysName+"/Vehicle/ConfiguredSimulinkPlantModel/Engine";
EngPwrAnalysis = VehPwrAnalysis.findChildSys(EngSysName);
dispSignalSummary(EngPwrAnalysis,EngSysName);
histogramEff(EngPwrAnalysis);

Use the findChildSys method to retrieve the autoblks.pwr.PlantInfo object for the Transmission subsystem.

To display the results, use the dispSignalSummary method.

TransSysName = SysName+"/Vehicle/ConfiguredSimulinkPlantModel/Transmission";
TransPwrAnalysis = findChildSys(VehPwrAnalysis,TransSysName);
dispSignalSummary(TransPwrAnalysis,TransSysName);

To plot the results, use the sdiSummary method.

sdiSummary(VehPwrAnalysis,{EngSysName,TransSysName})

Input Arguments

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autoblks.pwr.PlantInfo object for the system that you want to analyze.

Subsystem that you want to analyze.

Example: 'ConfiguredConventionalVirtualVehicle/Vehicle/ConfiguredSimulinkPlantModel/Engine'

Data Types: char

Version History

Introduced in R2019a

See Also

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