膀胱动力泵电磁驱动系统的优化设计

Optimal Design for Electromagnetic Driven Systems of Bladder Power Pumps

运用电磁铁设计理论和最优化理论,建立了膀胱动力泵电磁驱动系统优化设计模型。运用序列二次规划法求解模型,获得了最佳结构设计参数,据此建立了电磁驱动系统及膀胱动力泵三维模型。运用ANSYS Workbench仿真分析了电磁驱动系统的电磁驱动特性、温升特性和膀胱动力泵排尿动力特性,并进行了实验验证。结果表明,所建立优化设计模型和有限元仿真模型有效且实用;与优化前相比,电磁铁体积可减小65.45%,质量可减小60.25%,电磁驱动力提高2.09%,膀胱压峰值提高2.74%,尿流率峰值提高14.22%,温升仅增高1.64℃,改善了膀胱动力泵的排尿动力特性。研究结果可为设计便携、可靠及适用于动物和临床实验研究的膀胱动力泵提供理论与技术指导。

An optimization model of electromagnetic driven system of bladder power pump was built based on the theory of electromagnet design and optimization theory.The optimal structure design parameters were obtained by SQP method.According to these parameters,3D models of the electromagnetic driven systems and bladder power pumps were established.The electromagnetic driven performance,the temperature rise performance and the micturition performance were simulated by using ANSYS Workbench.The simulation and experimental results show that the optimization model and 3D finite element(FE)models are effective and practical.Comparing with the formers,the volume of electromagnet is reduced by 65.45%,the weight of electromagnet is reduced by 60.25%,the electromagnetic driven force is increased by 2.09%,the maximum of intravesical pressure is increased by 2.74%,the maximum of urine flow rate is increased by 14.22%,the temperature rise is increased 1.64℃.The results improve the micturition performance.The research may provide theoretical and technical guidance for the design of portable,reliable and suitable for animal and clinical studies of the bladder power pumps.