https://community.wolfram.com RSS Feed for Wolfram Community showing any discussions tagged with Control Systems sorted by active. https://community.wolfram.com/groups/-/m/t/3644908 **TL;DR** I'm looking for someone to refactor a Mathematica notebook I've got from a fellow researcher so I can use it as a reliable reference implementation. I expect it's a few hours of work for the right person. I can offer financial compensation and/or my own technical expertise. Hello Wolfram community! I hope this is the right place for this kind of request. If not, my apologies! I'm a PhD student in the final stage of my project, an attempt at closed-loop control of water jets from firefighting robots using UAV imagery as feedback. The controller design is based on the Smith predictor architecture, which requires a predictive model to compensate for the long dead time of the system. Accurately predicting the trajectory of water jets is far from trivial. One of the most promising models I could find is described in https://link.springer.com/article/10.1007/s10694-021-01175-1. The model is formulated as a system of ordinary differential equations. I tried implementing it in Python so I can integrate it with my other components. It's almost complete, but despite several months of debugging I haven't been able to resolve the remaining issues. So I contacted the corresponding author. They confirmed some errors I found in the printed versions of the equations, and kindly provided their original Mathematica implementation. This helped, but my own implementation is still incomplete. The issues could stem from additional errors in the printed equations I/we haven't found yet, mistakes in my implementation, or differences in solver behavior (Mathematica's vs. SciPy's solve_ivp() function). Unfortunately, the notebook is hard for me to follow and differs quite a bit from the published paper (structure, variable naming, angle conventions, etc.). I've never worked with Mathematica and don't have the time nor patience to properly learn it before my deadline. The author is currently unable to provide further support, but since I'm getting more and more desperate to finish this subproject, I'm now seeking third-party help. I'm looking for someone to refactor the notebook into a clean, well-structured reference implementation. Specifically, I'd like them to - remove unused and redundant code (many expressions are duplicated) - improve structure - improve documentation - add small quality-of-life improvements if appropriate - flag any noticeable discrepancies The refactored version must reproduce the original results, in particular the figures shown in the paper. Ideally, it should make it easy to experiment with the equations and parameters. One specific goal is to verify whether the rearranged equation forms I use in Python (to match SciPy's solver interface) produce the same results as the original formulation. If you're interested, I'll obtain the author's permission and share the notebook privately so you can assess the scope before we discuss compensation. Bonus points if you have experience with physics-based simulations and are open to occasional follow-up questions :) Many thanks and regards! Merlin Stampa 2026-02-24T20:34:23Z https://community.wolfram.com/groups/-/m/t/3680195 ![Job Opportunity with Emerald Cloud Lab!][1] **Emerald Cloud Lab (ECL)** is the world's leading remote research laboratory, allowing scientists to run experiments 24/7/365, from anywhere in the world. The entire lab is run on a build out of Wolfram Language - Symbolic Lab Language, which standardizes how biological and chemical laboratory experiments and their resulting data are designed, executed, and analyzed. Scientific methods are translated into code, then executed in our state-of-the art laboratory. 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This role offers the unique opportunity to solve challenging problems at the intersection of cloud computing, laboratory automation, and scientific instrumentation. **Scientific Developer** - We are an automated cloud-based laboratory. The role is pivotal in ensuring seamless transition for customers as they onboard on the ECL platform, optimizing experimental workflows for reproducibility, ease of use, and high-quality data output. As a customer-facing liaison and the bridge between our customers and platform, you will work closely with customers and internal teams to translate research needs into executable experiments, oversee their successful implementation, and troubleshoot >**Website:** https://www.emeraldcloudlab.com >**LinkedIn:** https://www.linkedin.com/company/emerald-cloud-lab [1]: https://community.wolfram.com//c/portal/getImageAttachment?filename=Screenshot2026-04-03073618.png&userId=3680157 Sophia Wolfram 2026-04-09T17:11:20Z https://community.wolfram.com/groups/-/m/t/3557070 &[Wolfram Notebook][1] [1]: https://www.wolframcloud.com/obj/17caf3e9-0f2e-4791-9c7f-f2688e6b2a37 Housam Binous 2025-10-06T10:29:11Z https://community.wolfram.com/groups/-/m/t/3581351 &[Wolfram Notebook][1] [1]: https://www.wolframcloud.com/obj/1b1a4488-6963-46a9-9f94-dc1f22a28585 Brian Beckman 2025-11-24T17:21:27Z https://community.wolfram.com/groups/-/m/t/3577845 &[Wolfram Notebook][1] [1]: https://www.wolframcloud.com/obj/24b014dc-93da-4cf9-b385-bc03d637fc61 Brian Beckman 2025-11-19T01:24:27Z https://community.wolfram.com/groups/-/m/t/3569623 &[Wolfram Notebook][1] [1]: https://www.wolframcloud.com/obj/b9eccdca-8b2d-4b79-8372-d7ce68b860ab Brian Beckman 2025-11-02T21:07:34Z https://community.wolfram.com/groups/-/m/t/2527035 A Wolfram U daily study group on "Signals, Systems and Signal Processing" begins on May 16, 2022. Join instructors [@Leila Fuladi][at0] and [@Mariusz Jankowski][at1] and a cohort of fellow learners to study the concepts, mathematics, principles and techniques of signal processing. We'll cover methods of analysis for both continuous-time and discrete-time signals and systems, sampling and introductory filter design. The concepts and methods of signals and systems play an important role in many areas of science and engineering and many everyday signal processing examples are included. A basic working knowledge of the Wolfram Language is recommended. **[REGISTER HERE][1]** ![enter image description here][2] [1]: https://www.bigmarker.com/series/daily-study-group-signals-systems-and-signal-processing/series_details?utm_bmcr_source=community [2]: https://community.wolfram.com//c/portal/getImageAttachment?filename=WolframUBanner.jpeg&userId=130003 [at0]: https://community.wolfram.com/web/leilaf [at1]: https://community.wolfram.com/web/mariuszj Abrita Chakravarty 2022-05-06T22:26:34Z https://community.wolfram.com/groups/-/m/t/3561206 &[Wolfram Notebook][1] [1]: https://www.wolframcloud.com/obj/038429e8-ef10-42d0-9b7b-ad3e6bbec976 Dara Shayda 2025-10-16T01:58:30Z https://community.wolfram.com/groups/-/m/t/3551641 &[Wolfram Notebook][1] [1]: https://www.wolframcloud.com/obj/33a41820-c999-4515-81be-555ebda62982 Dara Shayda 2025-09-26T13:19:06Z https://community.wolfram.com/groups/-/m/t/3550993 &[Wolfram Notebook][1] [1]: https://www.wolframcloud.com/obj/0d2ef5ac-d83c-4984-aae7-dbf573be837f Housam Binous 2025-09-25T15:00:12Z https://community.wolfram.com/groups/-/m/t/3550739 &[Wolfram Notebook][1] [1]: https://www.wolframcloud.com/obj/dfba162b-19a8-43a5-96b9-06f2bc0091e0 Housam Binous 2025-09-24T15:28:25Z https://community.wolfram.com/groups/-/m/t/3548805 &[Wolfram Notebook][1] [1]: https://www.wolframcloud.com/obj/adc1f9e9-b039-4083-bd81-7bc33581bc6b Matthew Kafker 2025-09-22T04:33:32Z https://community.wolfram.com/groups/-/m/t/3543392 &[Wolfram Notebook][1] [1]: https://www.wolframcloud.com/obj/fbdf4847-d014-4a57-a2df-2d88b87bf3e3 Dean Gladish 2025-09-10T05:30:14Z https://community.wolfram.com/groups/-/m/t/3024384 I am very frustrated with the slow transfer of data from the Arduino serial COM port to the PlotLine[] in dynamic function. In the Arduino Plot Serial, data is drawn instantly. But when connected to WM with USB able, the plots are very very slow. About 10 and 20 to 1 speed. The Arduino code is sending a 6 pair of integers in ASCI format. Any suggestions as to how speed up. He Arduino sketch is this #include <Wire.h> #include "Adafruit_AS726x.h" //create the object Adafruit_AS726x ams; uint16_t sensorValues[AS726x_NUM_CHANNELS]; void setup() { Serial.begin(115200); while (!Serial) pinMode(LED_BUILTIN, OUTPUT); //inicia y permite la comunicacion con el sensor if (!ams.begin()) { Serial.println("could not connect to sensor! Please check your wiring."); while (1) ; } } void loop() { //temperature sensor //uint8_t temp = ams.readTemperature(); //ams.drvOn(); // descomentar esto si quieres usar el led del sensor para hacer medidas ams.startMeasurement(); //begin a measurement //permite que el sensor lea la data cuando este disponible bool rdy = false; while (!rdy) { delay(5); rdy = ams.dataReady(); } //ams.drvOff(); //descomentar esto si quieres usar el led del sensor para hacer medidas //lee los valores! ams.readRawValues(sensorValues); //ams.readCalibratedValues(calibratedValues); //Serial.print("{"); //Serial.print("Temp: "); //Serial.print(temp); //Serial.print(","); //Serial.print(" Violet: "); Serial.print(sensorValues[AS726x_VIOLET]); Serial.print(","); //Serial.print(" Blue: "); Serial.print(sensorValues[AS726x_BLUE]); Serial.print(","); //Serial.print(" Green: "); Serial.print(sensorValues[AS726x_GREEN]); Serial.print(","); //Serial.print(" Yellow: "); Serial.print(sensorValues[AS726x_YELLOW]); Serial.print(","); //Serial.print(" Orange: "); Serial.print(sensorValues[AS726x_ORANGE]); Serial.print(","); //Serial.print(" Red: "); Serial.print(sensorValues[AS726x_RED]); //Serial.print("}"); Serial.println(); ; } I have set up Baud speed to very high, but this makes no difference. Here is the Mathematica Notebook dev = DeviceOpen["Serial", {"COM3", "BaudRate" -> 115200}] parseData[{val1__, 44, val2__, 44, val3__, 44, val4__, 44, val5__, 44, val6__}] := ToExpression@ FromCharacterCode@# & /@ {{val1}, {val2}, {val3}, {val4}, {val5}, \ {val6}} parseData[___] := Sequence[] rawReadings = {} Dynamic[ListLinePlot[Transpose[parseData /@ rawReadings], PlotLegends -> Automatic]] DeviceClose[dev] Jose Calderon 2023-09-30T21:42:31Z https://community.wolfram.com/groups/-/m/t/3531213 &[Wolfram Notebook][1] [1]: https://www.wolframcloud.com/obj/ced6bc18-f3f9-4806-bf3e-85c092a9c0ba Housam Binous 2025-08-15T17:55:50Z https://community.wolfram.com/groups/-/m/t/3524866 ![Thermal runaway in validation of industrial manufacturing with System Modeler and Wolfram Language][1] &[Wolfram Notebook][2] [1]: https://community.wolfram.com//c/portal/getImageAttachment?filename=thermal.png&userId=1618777 [2]: https://www.wolframcloud.com/obj/75063c23-f701-4697-9062-6e529766d792 Sergio Vargas 2025-08-05T07:15:14Z https://community.wolfram.com/groups/-/m/t/3524847 ![enter image description here][1] &[Wolfram Notebook][2] [1]: https://community.wolfram.com//c/portal/getImageAttachment?filename=aero.gif&userId=1618777 [2]: https://www.wolframcloud.com/obj/423f23fe-f065-4a22-90e7-518b9d231113 Sergio Vargas 2025-08-05T07:00:22Z https://community.wolfram.com/groups/-/m/t/3524876 ![enter image description here][1] &[Wolfram Notebook][2] [1]: https://community.wolfram.com//c/portal/getImageAttachment?filename=aerocol.gif&userId=1618777 [2]: https://www.wolframcloud.com/obj/fd416e7c-1c52-4cb2-89ec-1a51a1b50c63 Sergio Vargas 2025-08-05T07:23:45Z https://community.wolfram.com/groups/-/m/t/3524856 ![Validating performance of electrical vehicles with System Modeler and Wolfram Language][1] &[Wolfram Notebook][2] [1]: https://community.wolfram.com//c/portal/getImageAttachment?filename=ev.gif&userId=1618777 [2]: https://www.wolframcloud.com/obj/1adbe357-77f7-4916-9b37-db13b7a0baba Sergio Vargas 2025-08-05T07:08:15Z https://community.wolfram.com/groups/-/m/t/3502839 ![Modelling pedestrian dynamics and crowd flow with 2D cellular automata][1] &[Wolfram Notebook][2] [1]: https://community.wolfram.com//c/portal/getImageAttachment?filename=Screenshot2025-07-10174425.png&userId=3502688 [2]: https://www.wolframcloud.com/obj/067f23a1-3036-41d9-80ae-631085480b8a Hao Wei 2025-07-10T21:45:57Z