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| Temperature Drift Compensation Method for Electronic Analytical Balance Based on Support Vector Machine |
| LIU Ya-kun,HUANG Qiang,LI Jian-min,SUN Biao |
| College of Electrical and Information Engineering, Hunan University, Changsha, Hunan 410082, China |
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Abstract The temperature sensitivity of the key components such as the electromagnetic force compensation cell is the main factor causing the temperature drift in the electronic analytical balance. In order to eliminate the error caused by the temperature drift, a model and compensation method for electronic analytical balance were proposed based on the support vector machine. Through analyzing the factors of the temperature drift, the temperature rise of the temperature sensitive element and the temperature drift data of the electronic analytical balance were taken as the inputs of the model, the adaptive parameter optimization method was used to search the optimal parameter, the temperature drift error model of electronic analytical balance was established and the temperature drift compensation was performed. The test results demonstrate that the absolute value of the full load indication error of electronic analytical balance, of which the range is 200g and the resolution is 0.1mg, not more than 0.3mg, that the indication error caused by temperature drift is superior to the impact index of the 1st class balance defined by Chinese National Standard GB/T 26497—2011 “Electronic balance”.
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Received: 22 February 2017
Published: 06 November 2018
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Corresponding Authors:
Ya-Kun LIU
E-mail: 920494602@qq.com
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2018, Vol. 39 
