20.500.12556/RUL-185016 Robust optimization of an electromechanical linear actuator under experimental-budget constraints The design optimization of electromechanical linear actuators (EMLAs) is challenged by coupled tribological, thermal, and dynamic effects. Such interactions can violate the additivity assumptions of compact orthogonal designs. Factor ranking may become unreliable when residual variance includes non-additive contributions rather than stochastic noise alone. This study presents an Extended Orthogonal Experimental Matrix (E-OEM) framework for robust factor screening under experimental-budget constraints. It preserves the reduced effort of an orthogonal design while using a latent allocation term to retain structured non-additive variation that would otherwise be treated as residual error. It combines compact experimentation, fitted probability distributions, Monte Carlo simulation, and weighted multi-criteria ranking under push force, robustness, and cost targets. The framework is demonstrated on 90 automotive EMLAs considering lubricant type, drive frequency, and operating temperature. E-OEM was benchmarked against the full-factorial experiment (27 combinations, 810 push-force measurements). Under the selected weighting strategy, both E-OEM and the benchmark identified the same nominal optimum (590 Hz, +25 °C, Addinol lubricant), with a measured push force of 77.32 ± 2.05 N (1.01% deviation from the prediction). The results show that E-OEM provides an efficient screening and decision-support approach for actuator design when full-factorial testing is constrained by time and cost. electromechanical linear actuator robust design design of experiments push-force variability latent allocation term Monte Carlo simulation multi-criteria decision-ranking Taguchi orthogonal array elektromehanski linearni aktuator robustni dizajn načrtovani eksperimenti variabilnost potisne sile latentni faktor Monte Carlo simulacija multikriterijsko optimiranje Taguchi ortogonalna matrika true false true Angleški jezik Slovenski jezik Članek v reviji 2026-07-20 15:59:42 2026-07-20 15:59:53 2026-07-21 04:02:47 0000-00-00 00:00:00 2026 0 0 31 str. issue 7, art. 401 Vol. 15 2026 0000-00-00 Zaloznikova Objavljeno apc 0000-00-00 0000-00-00 0000-00-00 621.8 2076-0825 10.3390/act15070401 285468675 Duric_..._Robust.pdf Duric_..._Robust.pdf 1 137F690BC382F52B994A83943F3E03C4 befa6ae37fedd460aef07041eb51dce3dfa8dedecf2783f3690d846263bb310e cd0802fd-8443-11f1-9b0d-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=240512 https://www.mdpi.com/2076-0825/15/7/401 1 0b8c9637-8443-11f1-9b0d-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=240511 Fakulteta za strojništvo 0 0 0