Dual-level Multi-objective Genetic Optimization Design for Electro-Hydraulic Compound Actuator (EHCA)

摘要

Electro-hydraulic Compound Actuator (EHCA) applied in the More Electric Aircraft has the cross-coupling integrations in multidomain of electrical, thermal, hydraulic and mechanical aspects which are key considerations to obtain optimum system performance. Response frequency, efficiency and temperature rising are three main characteristics of all. The methodology for ensuring that the EHCA can continually operate in fast response and reliable situation with optimized performance is presented as dual-level multi-objective genetic optimization design to meet the above three demands in this paper. Furthermore, the relevant objective functions are built. Finally, the improved non-dominated sorting genetic algorithm (NSGAⅡ) is applied to solve the dual-level three objectives optimization problem. The results show that this method is effective and provide an approach for the further complicated optimization including more considerations.