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🔍 julia hartmann 📂 Engineering
Showing 65 results for "julia hartmann" in Engineering
Engineering Preprint PDF DOI

Complementarity by Construction: A Lie-Group Approach to Solving Quadratic Programs with Linear Complementarity Constraints

Arun L. Bishop, Micah I. Reich, Zachary Manchester · 2026

Many problems in robotics require reasoning over a mix of continuous dynamics and discrete events, such as making and breaking contact in manipulation and locomotion. These problems are locally well m…

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Engineering Preprint PDF DOI

Modeling and Simulation of Nitrogen Generation by Pressure Swing Adsorption for Power-to-Ammonia

Marcus J. Schytt, Lorenz T. Biegler, John B. J{o}rgensen · 2026

Power-to-ammonia (P2A) provides a carbon-free alternative to conventional ammonia production by replacing fossil-based feedstocks with electrolytic hydrogen and nitrogen from air separation. For decen…

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Engineering Preprint PDF DOI

\texttt{DR-DAQP}: An Hybrid Operator Splitting and Active-Set Solver for Affine Variational Inequalities

Daniel Arnstrom, Emilio Benenati, Giuseppe Belgioioso · 2026

We present \texttt{DR-DAQP}, an open-source solver for strongly monotone affine variational inequaliries that combines Douglas-Rachford operator splitting with an active-set acceleration strategy. The…

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Engineering Preprint PDF DOI

Least-Cost Overvoltage Control in PV-Rich Distribution Networks via Unbalanced Optimal Power Flow

Andrea Espinosa del Pozo, Araceli Hernandez, Luis Badesa · 2026

The increasing penetration of photovoltaic (PV) generation in low-voltage distribution networks presents operational challenges, with overvoltages being among the most critical. This study introduces …

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Engineering Preprint PDF DOI

StochasticBarrier.jl: A Toolbox for Stochastic Barrier Function Synthesis

Rayan Mazouz, Frederik Baymler Mathiesen, Luca Laurenti, Morteza Lahijanian · 2026

We present StochasticBarrier.jl, an open-source Julia-based toolbox for generating Stochastic Barrier Functions (SBFs) for safety verification of discrete-time stochastic systems with additive Gaussia…

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Engineering Preprint PDF DOI

PolyOCP.jl -- A Julia Package for Stochastic OCPs and MPC

Ruchuan Ou, Learta Januzi, Jonas Schie{ss}l, Michael Heinrich Baumann, Lars Grune, Timm Faulwasser · 2025

The consideration of stochastic uncertainty in optimal and predictive control is a well-explored topic. Recently Polynomial Chaos Expansions (PCE) have received considerable attention for problems inv…

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Engineering Preprint PDF DOI

Porous Convection in the Discrete Exterior Calculus with Geometric Multigrid

Luke Morris, George Rauta, Kevin Carlson, James Fairbanks · 2025

The discrete exterior calculus (DEC) defines a family of discretized differential operators which preserve certain desirable properties from the exterior calculus. We formulate and solve the porous co…

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Engineering Preprint PDF DOI

Optimal Droop Control Strategy for Coordinated Voltage Regulation and Power Sharing in Hybrid AC-MTDC Systems

Hongjin Du, Tuanku Badzlin Hashfi, Rashmi Prasad, Pedro P. Vergara, Peter Palensky, Aleksandra Lekic · 2025

With the growing integration of modular multilevel converters (MMCs) in Multi-Terminal Direct Current (MTDC) transmission systems, there is an increasing need for control strategies that ensure both e…

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Engineering Preprint PDF DOI

Forward kinematics of a general Stewart-Gough platform by elimination templates

Evgeniy Martyushev · 2025

The paper proposes an efficient algebraic solution to the problem of forward kinematics for a general Stewart-Gough platform. The problem involves determining all possible postures of a mobile platfor…

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Engineering Preprint PDF DOI

Unified Power Flow Model for Bipolar HVDC Grids in Unbalanced Operation

Chandra Kant Jat, Francesco Giacomo Puricelli, Jef Beerten, Hakan Ergun, Dirk Van Hertem · 2025

In the near future, point-to-point High Voltage Direct Current (HVDC) systems are expected to evolve into multi-terminal and meshed HVDC grids, predominantly adopting a bipolar HVDC configuration. Nor…

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Engineering Preprint PDF DOI

EIQP: Execution-time-certified and Infeasibility-detecting QP Solver

Liang Wu, Wei Xiao, Richard D. Braatz · 2025

Solving real-time quadratic programming (QP) is a ubiquitous task in control engineering, such as in model predictive control and control barrier function-based QP. In such real-time scenarios, certif…

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Engineering Preprint PDF DOI

C codegen considered unnecessary: go directly to binary, do not pass C. Compilation of Julia code for deployment in model-based engineering

Fredrik Bagge Carlson, Cody Tapscott, Gabriel Baraldi, Chris Rackauckas · 2025

Since time immemorial an old adage has always seemed to ring true: you cannot use a high-level productive programming language like Python or R for real-time control and embedded-systems programming, …

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Engineering Preprint PDF DOI

ModelPredictiveControl.jl: advanced process control made easy in Julia

Francis Gagnon, Alex Thivierge, Andre Desbiens, Fredrik Bagge Carlson · 2024

Proprietary closed-source software is still the norm in advanced process control. Transparency and reproducibility are key aspects of scientific research. Free and open-source toolkit can contribute t…

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Engineering Preprint PDF DOI

Extending Jacobian matrix in proving stability for nonlinear systems with one equilibrium point such as compressor

seyed Mohammad Hosseindokht, SamanehAlsadat Saeedinia · 2024

Global stability of the systems has always been vital of importance; however, this concept has not yet been sufficiently developed for the nonlinear systems. This paper extends the Jacobian matrix so …

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Engineering Preprint PDF DOI

Reactive Environments for Active Inference Agents with RxEnvironments.jl

Wouter W. L. Nuijten, Bert de Vries · 2024

Active Inference is a framework that emphasizes the interaction between agents and their environment. While the framework has seen significant advancements in the development of agents, the environmen…

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Engineering Preprint PDF DOI

Mechanistic Modeling of Continuous Lyophilization for Biopharmaceutical Manufacturing

Prakitr Srisuma, Gang Chen, Richard D. Braatz · 2024

Lyophilization (aka freeze drying) is a typical process in pharmaceutical manufacturing used for improving the stability of various drug products, including its recent applications to mRNA vaccines. W…

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Engineering Preprint PDF DOI

Exposing Barriers to Flexibility Aggregation in Unbalanced Distribution Networks

Andrey Churkin, Wangwei Kong, Pierluigi Mancarella, Eduardo A. Martinez Cesena · 2024

The increasing integration of distributed energy resources (DER) offers new opportunities for distribution system operators (DSO) to improve network operation through flexibility services. To utilise …

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Engineering Preprint PDF DOI

Estimation of the lateral mis-registrations of the GRAVITY + adaptive optics system

Anthony Berdeu (LESIA), H. Bonnet (ESO), J.-B. Le Bouquin (IPAG), C. Edouard (LESIA), T. Gomes (CENTRA), P. Shchekaturov (ESO), R. Dembet (LESIA), T. Paumard (LESIA), S. Oberti (ESO), J. Kolb (ESO), F. Millour (OCA), P. Berio (OCA), O. Lai (UniCA, CNRS), F. Eisenhauer (MPE), P. Garcia (CENTRA), C. Straubmeier, L. Kreidberg (MPIA), S. Honig, D. Defrere · 2024

Context. The GRAVITY+ upgrade implies a complete renewal of its adaptive optics (AO) systems. Its complex design, featuring moving components between the deformable mirrors and the wavefront sensors, …

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Engineering Preprint PDF DOI

Enhanced Optimal Power Flow Based Droop Control in MMC-MTDC Systems

Hongjin Du, Rashmi Prasad, Aleksandra Lekic, Pedro P. Vergara, Peter Palensky · 2024

Optimizing operational set points for modular multilevel converters (MMCs) in Multi-Terminal Direct Current (MTDC) transmission systems is crucial for ensuring efficient power distribution and control…

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Engineering Preprint PDF DOI

Advancing The Robotics Software Development Experience: Bridging Julia's Performance and Python's Ecosystem

Gustavo Nunes Goretkin, Joseph Carpinelli, Andy Park · 2024

Robotics programming typically involves a trade-off between the ease of use offered by Python and the run-time performance of C++. While multi-language architectures address this trade-off by coupling…

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