HRG strapdown navigator
HRG strapdown navigator
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DOI：
10.1109/plans.1990.66164
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发表时间：
1990-03
期刊：
影响因子：
--
通讯作者：
J. Dickinson;C. R. Strandt
中科院分区：
文献类型：
--
作者：
J. Dickinson;C. R. Strandt
研制了一种适用于捷联导航系统的新型陀螺--半球谐振式陀螺。由于其固有的简单性，该仪器提供了比电流传感器更高的可靠性。为了展示仪器的性能，已经开发了容错导航系统作为技术试验台。该系统的一次成功的飞行测试计划于1989年底完成。该容错导航系统配置了六个独立的传感器通道，由成对的陀螺和加速度计组成。每个传感器通道利用一个用C语言编程的微处理器来控制传感器读数并补偿热误差。用Ada编程的中央导航处理器结合了来自独立传感器通道的数据，以提供冗余管理和优化的导航解决方案。组合仪表的十二面体安装结构提供了冗余惯性轴的最佳对准。传感器的冗余管理通过一种增强的广义似然检验来完成。HRG导航仪的主要特点是反应迅速，工作温度范围宽，导航精度高。
A new technology gyro, the hemispherical resonator gyro (HRG), has been developed which is ideally suited to strapdown navigation systems. The instrument offers greater reliability than current sensors due to its inherent simplicity. A fault-tolerant navigation system has been developed as a technology testbed to exhibit the instrument's capabilities. A successful flight test program of the system was completed in late 1989. This fault tolerant navigation system is configured with six independent sensor channels consisting of paired gyros and accelerometers. Each sensor channel utilizes a microprocessor, programmed in C, to control sensor readout and compensate for thermal errors. A central navigation processor, programmed in Ada, combines data from the independent sensor channels to provide redundancy management and an optimized navigation solution. A dodecahedron mounting structure for the instrument cluster provides an optimum alignment of the redundant inertial axes. Redundancy management of the sensors is accomplished by an enhanced generalized likelihood test. Key features demonstrated for the HRG navigator are rapid reaction, operation over a wide temperature range, and navigation accuracy.>