摘要
基于磁流体动力学效应基本原理的角随机颤振传感器可以实现高精度、宽频微角振动的测量,其在高精度对地遥感、地面遥感图像数据修正、空间通信精确指向等应用中发挥着不可替代的关键作用,并在国外的应用十分广泛,是目前卫星平台测量宽带高精微角颤振的成熟产品。主要针对角随机颤振传感器中的关键部件导电流体环的数学模型进行推导。在建模过程中,突出主要分析对象,提出假设性前提条件,将复杂的建模问题进行简化,并应用运动学方程与欧姆定律,推导出了传递函数,并得出传感器中各个物理参量之间的关系,是传感器参数设计的基础。同时也从侧面提供了误差输入的传递关系,为传感器误差分析提供思路。
Freedom angular flutter sensor based on magnetohydrodynamic（ MHD） can realize the measurement of angle microvibration with high precision and wide band, which plays irreplaceable important roles in the remote sensing, data revision of remote sensed images, precise direction of space communication. This technology is used widely by the satellite platforms in the foreign as a commercial product. The mathematical model of conducting fluid ring is mainly derived, which is a key part in the micro angular flutter sensor. During modeling,the main analysis objects are highlighted and some hypothetical preconditions are proposed to simplify the complex model. Based on the kinematical equation and Ohm＇s law, the transfer function was deduced, and the relations among the parameters of the sensor were obtained. This research lays the foundation for the design of the sensor, and provides the transfer relationship of error input as a referee for sensor error analysis.
作者
吴建铭
李建勋
张明举
WU Jian-ming;LI Jian-xun;ZHANG Ming-ju(School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;Shanghai Aerospace Control Technology Institute, Shanghai 201109, China)
出处
《测控技术》
CSCD
2018年第7期69-73,共5页
Measurement & Control Technology
