PMID- 38258176 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20240129 IS - 2072-666X (Print) IS - 2072-666X (Electronic) IS - 2072-666X (Linking) VI - 15 IP - 1 DP - 2023 Dec 27 TI - Multi-Objective Optimization of a Long-Stroke Moving-Iron Proportional Solenoid Actuator. LID - 10.3390/mi15010058 [doi] LID - 58 AB - In this study, the performance of a long-stroke moving-iron proportional solenoid actuator (MPSA) was improved by combining numerical simulations and experiments. A finite element model of the MPSA was developed; its maximum and mean relative absolute errors of electromagnetic force were 4.3% and 2.3%, respectively, under typical work conditions. Seven design parameters including the cone angle, cone length, depth of the inner hole of the coil skeleton, cone width of the armature, inner cone diameter, and initial position of the moving-iron core were selected for developing the model, and the coefficient of the variation in electromagnetic force, nominal acceleration, 95% of the maximum stable output electromagnetic force, and corresponding response time were used as the performance indicators. The constraint relation between each performance indicator and the influence of each design parameter on the performance indicators were revealed using the uniform Latin hypercube experiment design, correlation analysis, and the main effect analysis method. A multi-objective optimization mathematical model of the MPSA was developed by combining traditional surrogate and machine learning models. The Pareto solution set was obtained using the nondominated sorting genetic algorithm II (NSGA-II), and three decision schemes with different attitudes were determined using the Hurwicz multi-criteria decision-making method. The results showed that a strong contradiction exists among the 95% of the maximum stable output electromagnetic force and its corresponding response time and the coefficient of the variation in electromagnetic force. The cone angle considerably influenced the performance indicators. Compared with the initial design, the coefficient of the variation in electromagnetic force was reduced by 54.08% for the positive decision, the corresponding response time was shortened by 15.65% for the critical decision, and the corresponding acceleration was enhanced by 10.32% for the passive decision. Thus, the overall performance of the long-stroke MPSA effectively improved. FAU - Liu, Peng AU - Liu P AD - College of Automotive and Mechanical Engineering, Changsha University of Science & Technology, Changsha 410114, China. FAU - Ouyang, Yuwen AU - Ouyang Y AD - College of Automotive and Mechanical Engineering, Changsha University of Science & Technology, Changsha 410114, China. FAU - Quan, Wenwen AU - Quan W AD - College of Automotive and Mechanical Engineering, Changsha University of Science & Technology, Changsha 410114, China. LA - eng GR - 52001032/National Natural Science Foundation of China/ GR - 2021JJ40588/Natural Science Foundation of Hunan Province of China/ GR - QCCK2020-008/Vehicle Measurement, Control and Safety Key Laboratory of Sichuan Province of China/ PT - Journal Article DEP - 20231227 PL - Switzerland TA - Micromachines (Basel) JT - Micromachines JID - 101640903 PMC - PMC10818690 OTO - NOTNLM OT - correlation analysis OT - main effect analysis OT - multi-criteria decision-making OT - multi-objective optimization OT - solenoid actuator COIS- The authors declare no conflict of interest. EDAT- 2024/01/23 06:44 MHDA- 2024/01/23 06:45 PMCR- 2023/12/27 CRDT- 2024/01/23 01:25 PHST- 2023/11/23 00:00 [received] PHST- 2023/12/19 00:00 [revised] PHST- 2023/12/25 00:00 [accepted] PHST- 2024/01/23 06:45 [medline] PHST- 2024/01/23 06:44 [pubmed] PHST- 2024/01/23 01:25 [entrez] PHST- 2023/12/27 00:00 [pmc-release] AID - mi15010058 [pii] AID - micromachines-15-00058 [pii] AID - 10.3390/mi15010058 [doi] PST - epublish SO - Micromachines (Basel). 2023 Dec 27;15(1):58. doi: 10.3390/mi15010058.