How to Design a Model Predictive Control Controller with Simulink | Understanding MPC, Part 6

[@MATLAB]

Download this hands-on MPC virtual lab to practice design of model predictive controllers for an autonomous vehicle steering system: bit.ly/MPC-virtual-lab

[@marcinw6701]

To avoid errors it is good to create a new blank system, add Melda's library and create the controller from scratch by dragging reference values and car model from the library and then add mpc controller. Then look at the movie and set up parameters similar like Melda is doing and it finally works !. It is also important that the Params file is attached to the model.

[@muteebrehman442]

Hi can you send me your file.

[@moma201]

hi,thanks for best tutorials. the lateral vehicle dynamics seems different from what you showed in the video( 1:36 in video)and what you used in the plant, what is the reference book that you used for lateral vehicle dynamics in the plant?

[@hayderusama668]

how can you create the reference block using trajectory Driving Scenario Designer?

[@akshaymarvaniya6227]

hii hayder if you know how to create the reference block using trajectory Driving Scenario Designer. then plz. share some information to me

[@techzila5379]

@@akshaymarvaniya6227 please share it with me also

[@akshaymarvaniya6227]

@@techzila5379 sorry prince I don't know it

[@techzila5379]

@@akshaymarvaniya6227any idea where i should search?

[@anisarkar4500]

how to extract yaw angle data from waypoints in scenario designer output

[@amr.a-m8350]

How to create plant block & reference custom or could I get them, please.

[@myozinaung]

The problem I am facing is: How to generate the 'optimal' reference trajectory 'automatically'?

[@mankaransingh2599]

deep learning

[@JustinAdG14]

Kalman Filter

[@성장형공대생]

how to plot simulation results? 8:32 i need more explanation :(

[@soroushghahrieh2089]

If there is a camera or sensor which gives us the position and yaw angle, where should we implant it? how can it help us to optimize the output better? And thank you for the great tutorial.

[@jananassereddine5439]

hey, I was wondering the same thing, did you get any response?

[@lootere3282]

How you created this reference block and took output from scenario reader

[@kaduhisgervizaelle]

Hello there, can I get Matlab scenario that can help me to set reference trajectory for coupled-tanks system?

[@orientasiprodikelasA]

could someone tell me how to create the plant block ? I want to make it different from this example

[@MATLAB]

You can post your questions to MATLAB Answers to get help. www.mathworks.com/matlabcentral/answers/index

[@loisefe3223]

Thank you very much for this video. Everything works well for me, but my signals don't show on different layouts. I connected all the scope to the scope located at the lateral position yaw angle. How do I make the signals to show on different layouts based on the y-axis rating?

[@santoshbullet]

how can reference block has taken can u please guide me

[@almamun737]

When i tried to ''Define MPC structure by linearization'' this error message is showed up ''The current directory 'c:\program files\matlab 2016a\bin' is reserved for MATLAB files. Please change your current directory to a writeable directory outside of the MATLAB installation area.'' What should i do?? plz help

[@akshaymarvaniya6227]

if you know how to create the reference block using trajectory Driving Scenario Designer. then plz. share some information to me

[@kamalwolly2639]

@@akshaymarvaniya6227 Its not free, available in automated driving tool box

[@Qaidi_804]

Can we design MPC for any plant using this toolbox? Is it such easy as shown in the video? I want to implement MPC in real time to PZT actuator and i have my plant transfer function not statespace

[@吴瀚宇]

Why we should design the reference in the scenario block, while we actually have a reference signal linked to the MPC block?

[@alessiodaddario2102]

hi, I would like to know if the 3d visualization of the car changing lanes is possible, and how it can be implemented

[@mahmudmohammed7155]

Hello How are you? I need to understand MPC control. Can you help me? Thank you

[@IhsanBitirim]

Hey, I want to use a Lateral Controller (Stanley,MPC etc.) with GPS Inputs from the vehicle. It is working here with X Y coordinates but i don`t know how to use it with my GPS-coordinates. Can someone help me?

[@andrewshaw5241]

why this MPC Plant model use Continuous-time state-space model，But Adaptive MPC need to convert to Discrete-time state-space model？

[@dr.AG3006]

hey, I am using a old version of MATLAB 2015a. I don't have car simulation toolbox. Please let me know how to design reference trajectory without using toolbox.

[@howardling6412]

why I can't open the link to download the simulink model??? My web problem???

[@meldaulusoy8389]

john golr Hi John, the Simulink model used in the video is temporarily unavailable as we’re trying to transfer it from GitHub to MATLAB fileexchange. I’ll update you once it becomes available again. Thank you for your patience.

[@howardling6412]

OK, thank you

[@meldaulusoy8389]

The model is now available on MATLAB File Exchange: www.mathworks.com/matlabcentral/fileexchange/68992-designing-an-mpc-controller-with-simulink-and-mpc-toolbox

[@akshaymarvaniya6227]

@@meldaulusoy8389 if you know how to create the reference block using trajectory Driving Scenario Designer. then plz. share some information to me

[@imshayankhan]

Hello can u please explain how had you used that space space model in matlab ..the onw with extra matrice thats delta ?

[@rehmanzafar5866]

When will we get next video? I am waiting anxiously.

[@akshaymarvaniya6227]

if you know how to create the reference block using trajectory Driving Scenario Designer. then plz. share some information to me

[@TylahKwin]

Hi, what do I do to create the plant model and reference blocks?

[@meldaulusoy8389]

Feel free to download the Simulink model used in this video and look under the blocks to see how they are created: www.mathworks.com/matlabcentral/fileexchange/68992-designing-an-mpc-controller-with-simulink?s_tid=FX_rc1_behav

[@kke0358]

@@meldaulusoy8389 Thank you so much

[@amr.a-m8350]

Good morning or night. Please I have a problem when executing on Matlab 2015 a with the same sequence of dis video but with a similar example & their connections why?

[@刘三三-j6w]

And how to build a state-space,such as the car model "plant", I click it but there is only one parameter“Vx” here. Thanks!

[@meldaulusoy8389]

You can right click the plant block and select "Block parameters" to see the state-space matrices used to model the plant.

[@刘三三-j6w]

@@meldaulusoy8389 Thank you so much！

[@vitaliitron]

Thank you so much for excellent explanation!

[@amr.a-m8350]

Good tutorial how to load plant of car & after creating the road & trajectory, please

[@marcofuso1096]

how can i create the reference block? I have already built my trajectory on Driving Scenario Designer. I ask this question because the link for the simulink model used in this video is broken.

[@meldaulusoy8389]

Hi Marco, while we're fixing the broken link, please find the model used in this video here: www.mathworks.com/matlabcentral/fileexchange/68992-designing-an-mpc-controller-with-simulink-and-mpc-toolbox

[@zhenganwang7419]

Sorry to trouble you, but I still don't know how to create the reference, do you solve this problem now?

[@TheMaRkS95]

@@meldaulusoy8389 Thank you

[@TheMaRkS95]

@@zhenganwang7419 yes, i solved this problem. You just need yo create your trajectory on ADAS. After that you need to create and save the function just as the video above shows. Then you need to use the matlab function " record () ", within the brackets you need to write the name of the function you saved before. This MATLAB code will return you a struct in which you can find all the values related to position, yaw angle and other parameters.

[@meldaulusoy8389]

@@zhenganwang7419 Hi, using the Driving Scenario Designer, create your trajectory and then add a sensor to your ego car using the button on the top panel (camera or radar). Then click export and choose "export MATLAB Function". Save the function with a name such as "generateSensorData.m". When you run this function as below, it simulates the driving scenario and saves the position and yaw angle of the car. The below code shows you how you can extract position and yaw angle; these (yawRef,posRef)) are then used in the reference block shown in the video. [allData, scenario, sensor] = generateSensorData(); t = [allData.Time]; ap = [allData.ActorPoses]; yawRef = [ap.Yaw]; posRef = vertcat(ap.Position);

[@jakedesmond5107]

I'm trying to understand how the model adapts its output based on the vehicle's measured response. Let's say you're trying to design an MPC that will act as a cruise control for your vehicle. If the target speed is V and your current speed is v, perhaps your model outputs a certain percentage of the throttle to be engaged. Even though the model predicts that your new speed v should be closer to V, what happens if the new speed is exactly the same as the old one (i.e. the throttle you're applying is exactly the amount of acceleration that your car experiences in drag). It looks like the model will just run through the exact same optimization it just did and spit out the same throttle. Can someone clarify? In particular, how does the model adapt to its predicted response versus the actual measured response? In a PID, for example, the integral gain would soon realize that the throttle you're applying is leading to a steady error and increase it even more to reduce the difference between V and v.

[@abdelrahmanabdelaziz7697]

Not for this examle but, where is the cost function and how do i maximize or minimize it

[@randywelt8210]

so this is the LTI-MPC example? Which basically runs LQR at each iteration? == iLQR example?

[@techzila5379]

where is this app for reference design?

[@Tianya001]

Error evaluating 'InitFcn' callback of MPC block (mask) 'AutonomousSteeringSystem/MPC Controller'. Callback string is 'impcblock_InitFcn' Caused by: Can not resolve: mpc1. Hello, why I have this question with the simulink model? Please help me, thanks.

[@Tianya001]

I have solved this question. My folder path unchanged.

[@menaeem]

@@Tianya001 How you resolved this issue? Please help me.

[@Tianya001]

@@menaeem The path in MATLAB should be modified to the path of the simulated file.

[@大杰-o1y]

Great tutorial about MPC controller ,thank you very much!

[@meldaulusoy8389]

Download the model used in this example here: www.mathworks.com/matlabcentral/fileexchange/68992-designing-an-mpc-controller-with-simulink-and-mpc-toolbox

[@makineegitim3960]

Dear Melda, the state variables in this video is: 3x1 matrix, but in the Simulink file, there seems 4 states. What are the selected states for the Simulink model?

[@richardteubner7364]

example does not work with Matlab2017

[@ThijsNL1]

How can I make a plant?

[@pirate9-cb7jb1gr9j]

Why don't you show the plant model (mathematically?)

[@jane-ll3bs]

"Download the Simulink model used in this video: bit.ly/2xheiUx " the link not available~~~

[@meldaulusoy8389]

The model is now available on MATLAB File Exchange: www.mathworks.com/matlabcentral/fileexchange/68992-designing-an-mpc-controller-with-simulink-and-mpc-toolbox

[@walterwang5996]

I did not find the 'Design' button on my MPC block window, why?

[@bryantlei1910]

ohhhhhh

[@jonayethaque530]

baler link ektao kaj korena

[@engineermechanical8728]

No clear at all

[@abeershply1072]

شكرا لك

[@manhduy6755]

When i tried to ''Define MPC structure by linearization'' this error message is showed up: Parameter 'B' in block 'Plant/State-Space' is incorrect. Component:Model Predictive Controller | Category:Find Operating Point errorOpen The number of rows in B matrix of a state-space system must be same as the number of rows in A matrix. What should i do?? plz help

[@jananassereddine5439]

did you get a response?