Abstract:

To solve the problem that the precision of an accelerometer is influenced by the environment temperature, the controlled object modeling in the accelerometer unit temperature control system is researched. There is heat exchange between the inside of the accelerometer and the environment. In order to improve navigation accuracy, a precise temperature control system is designed to offer a steady temperature environment for the accelerometer. In order to design the logical closed-loop, the experiments of temperature rising with multi-operating points are conducted. The controlled object model is identified with recursive extended least squares and proximal support vector regression respectively. The experiment results demonstrate that the identified model is effective.