【摘要】 建立差分方程的好坏，将直接影响到测量系统的动态参数估计，对分析和改善系统的动态特性产生影响。该文讨论了能同时确定差分方程模型阶数和参数的方法──最优模型选择方法，并把该方法应用到传感器的建模中。该方法计算量少，与传统方法建立的数学模型相比较，更为简单、实用。更多还原

【Abstract】 The good and bad for building up the difference equation will have influenceon estimating dynamic parameters of measuring system directly,and on analysing andimproving dynamic characteristics of system,The method of optimal model selectiondeterminating parameters and order of difference equation simultaneously is discussed,andapplied to transducer modelling。As compared with traditional methods,the methodmentioned above is characterized bv its less calculations,convenience and usefulness。更多还原