基于Laguerre函数的高压力非线性传感器补偿研究  

Nonlinearity Compensation Research of High Pressure Sensor Based on Laguerre Function

作　　者：孙冬梅[1] 李永新[1] 

机构地区：[1]南京工业大学自动化学院,江苏南京210009

出　　处：《计测技术》2008年第4期12-15,共4页Metrology & Measurement Technology

摘　　要：针对高压力传感器线性化输出的结果不准确的现象,研究了具有针对性的Duffing非线性系统。用传感器的输出数据作为补偿器的输入,传感器的输入数据作为补偿器的输出,进行基于Laguerre函数的非线性动态补偿器的设计研究。该方法无需知道传感器的非线性阶数,对于外界干扰有较强的抑制作用。对于时延对象也具有一定的优势。利用该补偿器对传感器进行动态补偿,将补偿结果与阶跃响应输出进行对比,结果表明该非线性模型补偿的有效性。Pointing to the high-pressure sensor linearization output resuh inaccurate phenomenon, the Duffing nonlinear system is studied. Using sensor output data as the compensator input, and the sensor input data as the compensator output, the compensator is designed based on the nonlinear dynamic Laguerre function. This method by which the nonlinear order of sensor does not need to be known has the strong inhibitory action for the external interference and a definite advantage to time delay. After the sensor dynamic compensation, the resuh is compared with the step response, and the effectiveness of the nonlinear compensation is shown.

关 键 词：非线性传感器 LAGUERRE函数 补偿方法 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置] TK312[自动化与计算机技术—控制科学与工程]