To characterize the shielding effectiveness(SE) of materials against electromagnetic pulse(EMP) that cannot be adequately evaluated by traditional test methods,a transfer function model of SE is proposed.Using homemad...To characterize the shielding effectiveness(SE) of materials against electromagnetic pulse(EMP) that cannot be adequately evaluated by traditional test methods,a transfer function model of SE is proposed.Using homemade broadband coaxial fixture,the SE of a metal fabric material against square-pulse and electrostatic discharge(ESD) EMP is tested in the time domain.The peak SE calculated from the test results matches well with that obtained theoretically.Based on the system identification theory,we propose the transfer function model of SE,which takes the square pulse and human body model ESD EMP data obtained in the tests as training data and takes the machine model as verification data,as well as a second-order expression of the transfer function.Using the transfer function model,the waveforms of the shield-penetrated square-pulse EMP and the ESD EMP are actually predicted.From the perspective of system identification,this accurate prediction of the shielded waveform of EMP provides a reliable way for evaluating SE of materials against EMP.展开更多
TP242.6 96063994三维视觉系统数学模型优化算法=An optimumalgorithm of the mathematical model for the3D-vision system[刊,中]/王滨(沈阳工业高等专科学校焊接教研室.辽宁,沈阳(110044)),曲志刚,吴林(哈尔滨工业大学.黑龙江,哈尔滨...TP242.6 96063994三维视觉系统数学模型优化算法=An optimumalgorithm of the mathematical model for the3D-vision system[刊,中]/王滨(沈阳工业高等专科学校焊接教研室.辽宁,沈阳(110044)),曲志刚,吴林(哈尔滨工业大学.黑龙江,哈尔滨(150006))∥机器人.—1995,17(5).—274—279根据系统辨识理论,在比较深入分析三维视觉系统观测特性的基础上,提出了一种优化该系统数学模型的非线性迭代算法。实际测试结果表明,视觉系统的测量精度仅低于视觉传感器分辨率的0.2%。且在整个测量空间,其精度基本一致。图8表2参3(方舟)展开更多
基金Project supported by National Natural Science Foundation of China （51277181 51177174）
文摘To characterize the shielding effectiveness(SE) of materials against electromagnetic pulse(EMP) that cannot be adequately evaluated by traditional test methods,a transfer function model of SE is proposed.Using homemade broadband coaxial fixture,the SE of a metal fabric material against square-pulse and electrostatic discharge(ESD) EMP is tested in the time domain.The peak SE calculated from the test results matches well with that obtained theoretically.Based on the system identification theory,we propose the transfer function model of SE,which takes the square pulse and human body model ESD EMP data obtained in the tests as training data and takes the machine model as verification data,as well as a second-order expression of the transfer function.Using the transfer function model,the waveforms of the shield-penetrated square-pulse EMP and the ESD EMP are actually predicted.From the perspective of system identification,this accurate prediction of the shielded waveform of EMP provides a reliable way for evaluating SE of materials against EMP.
文摘TP242.6 96063994三维视觉系统数学模型优化算法=An optimumalgorithm of the mathematical model for the3D-vision system[刊,中]/王滨(沈阳工业高等专科学校焊接教研室.辽宁,沈阳(110044)),曲志刚,吴林(哈尔滨工业大学.黑龙江,哈尔滨(150006))∥机器人.—1995,17(5).—274—279根据系统辨识理论,在比较深入分析三维视觉系统观测特性的基础上,提出了一种优化该系统数学模型的非线性迭代算法。实际测试结果表明,视觉系统的测量精度仅低于视觉传感器分辨率的0.2%。且在整个测量空间,其精度基本一致。图8表2参3(方舟)
