Differential mobility spectrometry (DMS) is a method for identification of ions based on the nonlinear dependence of ion velocity on electric field intensity. The most important parameters characterising sensitivity and selectivity of DMS detectors are signal intensity, position of the peak in the DMS spectrum and the width of the peak. These parameters depend on the detector construction and on its control method. The shape and amplitude of the supplying (separation) voltage waveform are also very important. In this work, four different models of a DMS detector are studied. The models are based on simple algebra, partial differential equations, finite elements method and a statistical approach. All considered models give an opportunity for determining the key DMS parameters. Theoretical data are compared with the results of measurements performed with a detector of a simple structure for which tuning the parameters of separation voltage is possible.

差分迁移谱法（DMS）是一种基于离子速度对电场强度的非线性依赖性来识别离子的方法。表征DMS检测器灵敏度和选择性的最重要参数是信号强度，峰在DMS光谱中的位置以及峰的宽度。这些参数取决于检测器的构造及其控制方法。供电（分离）​​电压波形的形状和幅度也非常重要。在这项工作中，研究了DMS检测器的四个不同模型。这些模型基于简单的代数，偏微分方程，有限元方法和统计方法。所有考虑的模型都为确定关键DMS参数提供了机会。