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医用血管支架非线性扩张过程快速预测方法的研究 被引量:3

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摘要 建立了血管支架变形影响因子与其变形结果之间的具有高度非线性识别能力的神经网络模型,通过引入学习因子η和动量因子ψ,采用附加动量项的权值修正方法,优化了网络训练算法,从而提高了网络训练速度和系统鲁棒性.结合实例对网络进行训练,并对预测误差进行了统计假设检验,检验结果表明血管支架变形神经网络智能预测结果与非线性有限元分析结果误差均值低于0.03%,训练后的网络能够较好地对血管支架变形进行预测.在此基础上,基于Pro/Toolkit工具,融合血管支架扩张变形神经网络智能预测模型,建立了血管支架力学性能快速评价工具,该系统实用性强、效率高,能大幅缩短血管支架产品开发周期。
出处 《中国科学(E辑)》 CSCD 北大核心 2008年第7期1016-1025,共10页 Science in China(Series E)
基金 国家重大基础研究973计划(批准号:2006CB708610) 国家863项目(批准号:2006AA04Z351) 国家自然科学基金项目(批准号:50675033) 江苏省自然科学重点基金项目(批准号:BK2006709)
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