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OptiStructの線形モデルをTwin Activateに取り込む（構造音響連成対応）
以前、Altair OptiStructの線形モデルをAltair Twin Activateに取り込む方法を紹介しましたが、 OptiStructの構造要素のみを対象としていました。 OptiStructの線形モデルをActivateに取り込む - Altair Community 今回は、OptiStructの構造音響連成モデルに対応しましたので、その方法を紹介します。 本記事で使用したモデル・スクリプトはこちら。 https://us.v-cdn.net/6038102/uploads/EJRDAQIDN3P5/dmigpch-reader-abcd-acoustic.zip モデル 下記チュートリアルを流用します。 OS-T:…
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Power Electronics Design Utilizing Machine Learning for Thermals
(This is a translated version of an article posted by Kosuke Ikeda. The original article in Japanese can be found here) At the 1DCAE & MBD Symposium 2024, held in Hiroshima from November 28 to 29, 2024, a presentation was given on the theme “Power Electronics Design Leveraging Machine Learning and 1D Simulation.”…
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Twin Activate Hydraulics - Default Reference Density
Description: If you do not specify a ReferenceDensity within a component does it automatically take the density from the Liquid block connected to the circuit or does it remain as the default value in grey (860)? I have a basic test circuit model; VariableFlowPump (ramped) ResistorTableQp and open tank. I have used a…
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HyperStudy Fails to Import Variables from Twin Activate Tutorial Model — “Failed to generate import
I’m encountering an error when trying to link Twin Activate and HyperStudy using the PID Optimization tutorial model that comes with Altair Twin Activate. When I create a new study in HyperStudy 2025.1, select Twin Activate as the model type, and point to the provided .scm file, the variable import process fails…
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Article Tutorial
Hello, I see the following article in the community. Does the article have a corresponding video tutorial ? Thank you
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How can I increase the value of the horizontal axis (time)?
After training the romAI model, I created a block to compare the results between romAI and Modelica. After running, my result shows max time = 30, while on the help page it shows max time = 500. How can I adjust the max time?
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Accelerating EDEM Material Model Calibration with romAI: A Case Study from Uniaxial Compression Test
Authors: Ambrish Singh and Spyridon Mallios 1.0 Introduction A Discrete Element Method (DEM) simulation can provide critical insights into the behavior of granular media subjected to various environmental, process, and operating conditions. However, prior to modeling process of interest, ensuring that the DEM simulation…
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Active & Reactive Power Control with PSIM-trained Dynamic Reduced Order Models (romAI)
PSIM is a powerful simulation tool for power electronics, known for its fast performance. However, when simulating systems with lots of power converters, the overall simulation time can become significantly long. To address this, we are exploring methods to simulate multiple converters more efficiently, including AI…
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I keep getting an error message when I try to activate my student license.
I recently installed HyperMesh, Compose, MotionSolve, EDEM, and Twin Activate. I am trying to activate my student license, but I keep getting this error message. Could someone please help me?
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Community Champion of the Month - July, 2025
The Community Team would like to introduce the July Champion of the Month, Dr. Luca Cavagna @Luca Cavagna who has vast experience as an aerospace engineer in the field of aeroelasticity , flight/ground loads and simulation. Luca Cavagna graduated in 1998 from Politecnico di Milano in Aerospace Engineering with a thesis on…
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【Innovators of Blue Ocean 自律運航船チーム】の進捗紹介（本番機の製作・テスト）
学生団体Innovators of Blue Ocean 自律運航船チームの田口です。 チーム支援金プロジェクトのサポートを得て、ノルウェーの自律運航船学生大会Njord Challenge(2025,8月開催)を目指しています。 まず初めに、チームの進捗です。 先日、大会に向け、設計しておりました本番機を製作を完了し、組立テストとセンサーとミニPC上で動くプログラムによる状況認識ソフトのテストを行いました！ 大会は8/4からスタートし(8/5~8/8は大会会場での調整可能期間)、水上での競技は8/11~8/14に行われます。 ハードウェア・ソフトウェアともに修正点が見つかりましたので、現在最終調整を行っています…
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Confusion Using PyCustomBlock with ReadImage/ReadVideo and ShowImage in Twin Activate
Hi everyone, I'm exploring PyCustomBlock in Altair Twin Activate and running into some confusion around data flow and input/output port parameters. Here's what I'm trying to do: Use ReadImage or ReadVideo as the input source Process the image/video in a Python block (PyCustomBlock) Display the result using ShowImage…
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Issue with Filter in Altair Compose
Dear Team, I am working in Altair Compose, and I am experiencing an issue with the filtering behavior. Specifically, the filter command appears to be working (i.e., it is being recognized as saefilter 180 and applied to the curve), but the results in certain parts of my compose chart are not as expected. Some layers are…
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FIT Model-Based System Simulation of LLC Battery Chargers
Introduction and Workflow Overview HyperStudy is a data analytic AI tool that is used to generate the data and then train a fit model of a power converter. PSIM is the simulation tool that is used to simulate the full fidelity power converter that will generate the data for the fit model. TwinActivate is the system…
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Optimizing Tractor-Implement Systems with MotionSolve and EDEM
Introduction Effective tractor-implement systems are necessary for cultivating healthy crops. Traditionally, improving tractor-implement performance has relied on field testing – a process which is time-consuming, weather-dependent, and costly. In this article, we explore how MotionSolve (Multibody Dynamics) and EDEM…
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romAIを用いたパワーコンバーターのAIサロゲートモデル
このセッションでは、Altair romAI を使用して PSIM パワーコンバーターのサロゲート AI モデルを構築する方法をご紹介します。これらの AI 低次元化モデル（ROM）は、システムのダイナミクスを高精度に捉えつつ、システムシミュレーションをはるかに高速に実行することを可能にします。バッテリー充電アプリケーションにおけるパワーコンバーターのシミュレーションは、しばしば計算コストが高く、バッテリー充電システムの解析に必要な長期間のシミュレーションは、非常に時間のかかるプロセスです。Altair romAI は、リアルタイムよりも高速な結果を生成できるため、設計の評価と改善に集中することができます。…
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DIGITAL TWIN FOR ANALYSIS OF IRON ROUGHNECKS USING MOTIONSOLVE AND TWIN ACTIVATE
INTRODUCTION Iron roughnecks are hydraulic devices widely used in the oil and gas industry for the automation of critical operations on oil rigs. Historically, these systems were introduced to improve the safety of oil rig workers while connecting and disconnecting drill pipes. Without such systems, these operations would…
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Is Activate discontinued and integrated into Twin Activate?
Hello, I have been looking for Simulink alternatives and I found about Altair Activate and how Altair provides license to students. I got my license but now I can not find Altair Activate in Altair One Marketplace. Is Altair Activate discontinued and integrated into Twin Activate. Can i do what i want to do with Activate…
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AI Surrogate Models of Power Converters with Altair romAI | Webinar Recording
This session shows how to build surrogate AI models of PSIM power converters using Altair romAI. These AI reduced-order models (ROMs) can be used to run system simulations much faster, while still capturing system dynamics with high accuracy. Power converters in battery charging applications are often computationally…
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TwinActivate ConditionalSelect 'Copy first input if' choice.
If u2 == true is selected, does true contain negative values? Or is there any block of code that can detect the presence of a signal and then output the corresponding value?
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How to reference the plant input value to a solver variable in motionview?
I am trying to integrate this AI model that predicts the primary and secondary pulley radius of a motorcycle with CVT in twin activate co simulation. I have created python block which contains the AI model. This accepts inputs that should come from the motionsolve block during simulation. I have already setup the plant…
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How to update the path of motionsolve bin directory?
I am getting this error when running a simulation in twin activate: "Unable to load MotionSolve interface dll during block initialization" I tried to run this command in command window: GetMotionSolveBinDirectory() It outputs this: ans = C:\Program Files\Altair\2024.1\hwsolvers\motionsolve\bin\win64 It is pointing to the…
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Twin activate hangs and not responding when running simulation
I have a Twin Activate project where I’ve established communication between a Python block and a MotionSolve block. The MotionSolve block runs a simulation of an automatic motorcycle. I’m passing an input from the MotionSolve block to the Python block, and the Python block also sends an output that is received by the…
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Co-simulation abnormal (Activate-MotionView)
Hi Everyone, When I perform co-simulation (Activate-MotionView), I get an unexpected result. I created a new Solver Variable called "SolverVariable FL Switch". In the Expression of Brake\Front Brakes\Forces\Brake Torque(Left), I added the following code. VARVAL({MODEL.sv_fl_switch.idstring}) In Solver Arrays, under…
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How to upgrade tensorflow version to latest version?
I am currently using TensorFlow in my Twin Activate project, where I use a Python block to communicate with the MotionSolve block. This Python block runs a script that uses TensorFlow to load a model developed in Google Colab. However, there has been an issue when loading the model because the TensorFlow versions in Twin…
