Economical High–Low Temperature and Heading Rotation Test Method for the Evaluation and Optimization of the Temperature Control System for High-Precision Platform Inertial Navigation Systems

作者：Qiang Yang, Rong Zhang, Haixia Li · 发表于：Sensors · 年份：2018 · DOI：10.3390/s18113967 · 被引用次数：6 · 研究领域：Inertial Sensor and Navigation、Advanced Control and Stabilization in Aerospace Systems、Astronomical Observations and Instrumentation

Inertial navigation systems (INSs) use the temperature control system to ensure the stability of the temperature of the inertial sensors for improving the navigation accuracy of the INSs. That is, the temperature control accuracy affects the performance of the INSs. Thus, the performance of temperature control systems must be evaluated before their application. However, nearly all high-precision INSs are large and heavy and require long-term testing under many different experimental conditions. As a result, conducting an outdoor navigation experiment, which involves high⁻low temperature and heading rotation tests, is time consuming, laborious, and costly for researchers. To address this issue, an economical high⁻low temperature and heading rotation test method for high-precision platform INSs is proposed, and an evaluation system based on this method is developed to evaluate the performance of the temperature control systems for high-precision platform INSs indoors. The evaluation system uses an acrylic chamber, exhaust fans, temperature sensors, and an air conditioner to simulate the environment temperature change. The outer gimbals of the platform INSs are utilized to simulate the heading rotation. The temperature control system of a high-precision platform INS is evaluated using the proposed evaluation method. The temperature difference of the gyros is obtained in the high⁻low temperature test, and the temperature fluctuation of the temperature control system is observed i...