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VeSyMA – Suspensions Library

May 19, 2017

Written by: David Briant – Project Engineer A recent addition to the Dassault Systemes Dymola portfolio is the Suspensions library, developed by Claytex, built on the platform of the VeSyMA Library. This library focuses on the development of suspension systems primarily for the investigation of vehicle handling, including road, driver and stability control models. The VeSyMA library read more

Idle speed control using Model-based sliding mode control

May 12, 2017

Written by: Xiaoran Han – Project Engineer Introduction Following the previous blog post, ‘Linearised Mean Value Engine Model-based Idle Control‘, which describes how to derive a linearised model of crank angle resolved engine for idle speed controller design, this article describes the design of a sliding mode controller based on the linearised model and shows simulation read more

Stability Analysis in Dymola – Part 3

May 5, 2017

Written by: Sas Harrison – Systems Engineer Introduction This article will explain the nature of a root-locus diagram and explain how to create one using the DYMOLA software. For students & researchers, we hope the article will open up possibilities to use DYMOLA as the modular, acausal & smart, explicit-analysis software of choice, for control(ler) design & read more

FMI Blockset for Excel

April 23, 2017

Written by: Vesel Haxha – Senior Developer The FMI Blockset for Excel allows FMUs to be simulated from within Microsoft Excel. It is a Claytex in-house built tool and provides Add-ins for Microsoft Excel written in .Net. The FMI Blockset for Excel is compliant with the FMI 2.0 Co-simulation interface and it consists of: FMI Blockset shown in read more

VeSyMA – Powertrain Library

April 10, 2017

Written by: Romain Gillot – Project Engineer The VeSyMA – Powertrain library (also known as “PTDynamics” library) is a library developed by Claytex for modelling rotating MultiBody systems, mainly automotive powertrains. It is built on the VeSyMA library and is fully compatible with the Modelica Standard and VehicleInterfaces libraries. The purpose of this library is to provide read more

VeSyMA Library

April 3, 2017

Written by: Theodor Ensbury – Project Engineer ‘Building on the Modelica solutions we have developed over the past 10 years, Claytex has created VeSyMA. This is a new platform for Vehicle Systems Modelling and Analysis created using Modelica and available for Dymola.’ Comprised of top-level and sub-system templates and interfaces, the VeSyMA library from Claytex is the cornerstone read more

Momentum balance implementation in Dymola

March 27, 2017

Written by: Maura Gallarotti – Project Engineer When starting to work on fluids in Dymola, it is of paramount importance to build base classes where the momentum, energy and mass balances are performed, in order to have a common base class for several models and a strong foundation to build your own library. A good starting read more

Jumping Cars with the VeSyMA – Suspensions Library

March 17, 2017

Written by: David Briant – Project Engineer There are many commonly used experiments included in the new VeSyMA – Suspensions library ranging from the simple mass check experiment to slalom and double lane change manoeuvres. These common tests are very useful in setting up and testing vehicle performance for every day driving situations and common road read more

Linearised Mean Value Engine Model-based Idle Control

March 10, 2017

Written by: Xiaoran Han – Project Engineer 1. Introduction PID controllers have been widely used for control design due to their simplicities and non-model based design. However, they lack robustness with respect to uncertainties and external disturbances. This blog post describes a method for developing a mean value model of intake manifold pressure and engine speed read more

EDrives Library Including Electric Machines

March 3, 2017

For more information on the EDrive Library including Electric Machines, please view: EDrives Key Performance Indicators Please get in touch if you have any questions or have got a topic in mind that you would like us to write about. You can submit your questions / topics via: Tech Blog Questions / Topic Suggestion.

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