D-optimal six position testing method for dynamically tuned gyro
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摘要: 为了以较低的试验成本获得较高的挠性陀螺静态误差模型系数估计精度,提出了一种基于D-最优准则和正交试验设计的优化地理坐标六位置试验方案.为了验证D-最优地理坐标六位置试验方案的有效性,进行了多次D-最优地理坐标六位置试验和ANSI/IEEE Std 813-1988中规定的地理坐标八位置试验.试验结果表明,在试验成本较低的情况下,D-最优地理坐标六位置试验方案不仅可以估计出挠性陀螺简化静态误差模型系数,而且其估计精度比ANSI/IEEE Std 813-1988中规定的地理坐标八位置试验方案的估计精度略高.Abstract: The construction of a D-optimal six position experimental design for the two-degree of freedom dynamically tuned gyroscope was presented, in order to improve estimate accuracy of the acceleration-insensitive drift rate and acceleration-sensitive drift rate coefficients of the assumed error model at reasonable experimental cost. The basis idea is to choose six measurement positions to build a D-optimal experiment by applying the symmetric separate design method of orthogonal design. In order to test the efficiency of D-optimal six position experimental design, a series of lab tests were conducted to compare the coefficients solution computed with a usual experimental design in ANSI/IEEE Std 813-1988 and the D-optimal six position experimental design. Tests results show that the D-optimal six position experimental design provides at least same accurate estimates of the acceleration-insensitive drift rate and acceleration-sensitive drift rate coefficients compared to a usual experimental design in ANSI/IEEE Std 813-1988 at less experimental cost .
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Key words:
- experiments /
- gyroscopes /
- optimization
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