基于支持向量机热电偶的非线性误差校正

Support Vector Machine Based Non-linear Error Correction for Thermocouples

提出了一种利用支持向量机对热电偶进行非线性误差校正的原理和方法。该算法只依据样本就可以正确辩识热电偶逆模型特征 ,并将原问题转化为一个凸二次优化问题 ,能保证找到的极值解就是全局最优解 ,具有较好的泛化能力。通过对分度号为K的镍铬 -镍硅热电偶进行非线性校正的应用结果表明 。

The principle and method of correcting non-linear error for thermocouple by using support vector machine are stated. With this algorithm, the features of converse model of thermocouple can be correctly recognized only by the sample, the original problem can be changed into a convex secondary optimization problem. This ensured that the extreme value solution found is the global optimal soiution, and offers good generalization capability. The result of application on correcting non-linear error for Ktype Ni-Cd Ni-Si thermocouple shows that the effects are excellent.