What’s New in Simulink R2024a? » Man on Simulink

April 11, 2024

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MATLAB R2024a is now obtainable, and quite a lot of new necessary options have been added to Simulink. Listed below are my high 5.

Simulation object

Utilizing the Simulation object, you’ll be able to programmatically run a simulation step-by-step. You may execute the simulation one step at a time, for a specified variety of steps or as much as a particular time. Right here is an instance the place I simulate the mannequin as much as t=18.5 seconds, then I alter the worth of variable okay and proceed the simulation till the cease time:

% Run the primary a part of the simulation with okay=0.2

% Run the second half with okay=1.5

Design Research

The brand new Design Research API gives a layer on high of parsim and batchsim to enhance scalability. As a substitute of making an array of Simulink.SimulationInput objects, you specify arrays of values to be simulated, and the way they need to be mixed. Right here is a straightforward instance the place I simulate a mass-spring-damper system for various mass and damping values. 

I specify 5 mass values and 5 damping values, and simulate an exhaustive mixture for a complete of 25 simulation

kVar = simulink.multisim.Variable(‘c’,1:5);

cVar = simulink.multisim.Variable(‘m’,1:5);

fullSpace = simulink.multisim.Exhaustive([kVar cVar]);

myDesignStudy = simulink.multisim.DesignStudy(mdl, fullSpace);

outH = parsim(myDesignStudy,‘ShowProgress’,‘Off’,‘UseFastRestart’,‘on’);

out = fetchOutputs(outH);

Specifying Variant Configurations utilizing a SimulationInput object

A brand new VariantConfiguration property has been added to the Simulink.SimulationInput object. Right here is an instance code the place I get the variant configuration information for a mannequin and run one simulation per obtainable configuration:

mdl = ‘sldemo_variant_subsystems’;

load(‘variantConfigs.mat’); % load pre-saved variant configuration information

vcd = Simulink.VariantManager.getConfigurationData(mdl);

N = size(vcd.Configurations);

in(1:N) = Simulink.SimulationInput(mdl);

in(i) = in(i).setVariantConfiguration(vcd.Configurations(i).Identify);

out = sim(in,‘ShowProgress’,‘off’);

Simplified Mechanism to entry Information Dictionaries

Earlier than R2024a, in the event you needed to programmatically change the worth of a parameter saved in a knowledge dictionary, you needed to write code like this:

myDictionaryObj = Simulink.information.dictionary.open(‘simplesystemDD.sldd’);

dDataSectObj = getSection(myDictionaryObj,‘Design Information’);

kObj = getEntry(dDataSectObj,‘okay’);

In R2024a, you’ll be able to easy join to an information dictionary and work together with it utilizing the dot operator.

h = Simulink.information.join(‘simplesystemDD.sldd’);

Protect alignment when shifting and resizing blocks

Let’s shut this listing with a easy quality-of-life modifying enchancment. This isn’t a game-changer like a number of the earlier highlights however will hopefully enhance your modifying expertise.

When deciding on a block, you may discover a light-weight inexperienced highlighting on connections and blocks round it. Which means now we have detected that these connections and blocks ought to doubtless transfer with the blocks.