集成电路芯片组合逻辑辨识实验系统的研制

文章围绕数字集成电路芯片组合逻辑关系判别问题,主要探究了芯片电气属性判定方法、多输入变量的逻辑简化以及芯片逻辑关系测试。在设计过程中,首先通过实验手段提出判定芯片引脚的方法,即分辨出输入引脚、输出引脚、电源和地引脚。在此基础上,利用PIC16F877A单片机和Visual Basic软件共同完成芯片逻辑关系的测试。测试出来的真值表再经由Boolean Minimizer软件进行逻辑简化,最终得到了最简的输入输出之间的逻辑关系。实验证明系统运行快捷,辨识结果可靠。     

Algorithmic Study of M-Estimators for Multi-Function Sensor Data Reconstruction

This paper describes a data reconstruction technique for a multi-function sensor based on the M-estimator, which uses least squares and weighted least squares method. The algorithm has better robustness than conventional least squares which can amplify the errors of inaccurate data. The Mestimator places particular emphasis on reducing the effects of large data errors, which are further overcome by an iterative regression process which gives small weights to large off-group data errors and large weights to small data errors. Simulation results are consistent with the hypothesis with 81 groups of regression data having an average accuracy of 3.5%, which demonstrates that the M-estimator provides more accurate and reliable data reconstruction.