提出了一种在不带有反转平台的精密离心机上标定陀螺加速度计误差模型系数的两位置测试方法。
The paper presented a two-position test method for calibrating error model coefficients of PIGA (pendulous integrating gyro accelerometer) using precision centrifuge without counter-rotating platform.
阐述了所提方案的测试原理,并提出分离和精确标定陀螺加速度计误差模型系数的数据处理方法。
Its testing principle was expounded, and a data processing method for separating and accurately calibrating error model coefficients were presented.
提出了一种在带有反转平台的精密离心机上标定陀螺加速度计误差模型二次项系数K 2的D -最优试验方案。
D-optimal test scheme was presented for calibrating second-order coefficient K2 of PIGA (Pendulous Integrating Gyro Accelerometer) error model on a precision centrifuge with counter-rotating platform.
理论分析结果表明,两位置对准可以提高系统状态变量的可观测度,尤其对加速度计误差和方位失准角的可观测度提高作用明显。
Theory analysis showed that the method of two-position alignment increases the observability degree of state variables, especially for the error of accelerometer and azimuth misalignment.
应用加速度计静态温度模型进行温度误差补偿,模型精度显著提高。
Application acceleration model for the static temperature compensation for temperature error, model accuracy improved significantly.
然后,利用所得到的静态温度模型对该加速度计进行温度误差软件补偿。
Then, through the model, we can finish easily the accelerometer's temperature error compensation on the software design.
研究表明,液浮摆式加速度计在过载振动复合环境下,因为结构变化而产生了较大的工作误差,这些误差的表现形式相当复杂,在单一环境实验中是无法体现的。
It is shown in research that because of the structural change of the Liquid Floated Accelerometer in OAVCE, there is more severe error which can not be found in single environment test.
结合加速度计零位和标度因数的温度误差模型,采用了相应的误差补偿算法。
The proper error-compensation method is adopted based on the temperature error model of the accelerometer.
利用MATLAB进行了仿真,使得在三轴转台上标定加速度计动态误差系数有了清晰的先验认识和结果预期。
As the result of simulating finished with MATLAB, clear prior knowledge and anticipated result of calibrating dynamic error coefficients of accelerometer on three-axis turntable are obtained.
首先,针对实际系统中所用的光纤陀螺、石英挠性加速度计组件,分别建立了相应的静态误差模型。
Above all, according to the FOG and quartz accelerometer adopted in navigation system, the static error models of IMU (Inertial Measurement Units) are built up.
在三轴转台的三个轴上同时施加恒定角速率,激励出加速度计动态误差项。
The constant angular rate was applied to three axis of turntable at the same time to actuate dynamic error term of accelerometer.
文中以陀螺仪和加速度计的误差特性为基础建立了SINS的导航误差模型,并对SINS静基座下的误差特性进行了仿真分析。
Based on gyro and accelerometer error characteristic, this paper sets up the error model of SINS, and has simulated and analyzed the error characteristic of SINS on still base.
对线加速度计辅助惯性姿态角测量的误差分析表明,测量误差由加速度计噪声、二次积分离散化、信标噪声和加速度计频率特性误差组成。
The error analysis shows that the measurement error is caused by the noise of the accelerometer, discrete double integration, noise of beacon and frequency characteristic error.
在分析和研究加速度计动态输出的基础上,综合了加速度计仿真模型和三轴转台数学模型以及测试误差的特性。
Based on analysis and study the dynamic output of accelerometer, simulating model of accelerometer, mathematical model of three-axis turntable and the characters of test errors are synthesized.
其中由于加速度计的误差项影响最大,因而加速度计阵列的误差补偿程度直接影响到后续解算精度。
The error from inertia sensor affects a maximum, so the degree of accelerometer array error compensated directly affects the following solution calculates precision.
目前提高SAW加速度计精度的主要难题是对其温度误差进行温度补偿。
Nowadays the main difficult problem of improving the SAW accelerometer precision is carrying on the temperature compensation to its temperature error.
在此基础上,对整个加速度计系统的误差来源进行了研讨。
On the base, the error sources of the whole accelerator's system are analyzed.
研究了存在安装误差时基于加速度计比力信号解算高自旋弹丸角速度和姿态角的方法。
A method of solving the angular speed and attitude angular of high spinning projectile was proposed by accelerometers' specific force signal in existence of installation errors.
利用BIC准则及残差平方和最小原则得到振梁加速度计的最佳误差模型。
The rules of BIC and minimum residual sum of squares are used to gain the optimum error model.
加速度计的偏置误差形成一平均的常值偏离加上一振荡分量。
The accelerometer bias errors result in an average constant offset plus an oscillatory component.
本文基于NGMIMU九加速度计配置方案,利用卡尔曼滤波器抑制误差的累积,并且推导了卡尔曼滤波器的状态方程和预防方程。
To alleviate the accumulation error, a Kalman-filtering approach based on a nine-accelerometer configuration of NGMIMU is proposed. The state equation and estimation equation are also deduced.
加速度计频率特性误差是最主要的误差来源。
The step friction torque is the main source for the stabilization error.
数字补偿器对加速度计频率特性误差做出修正后,测量精度得到明显提高。
The precision can be improved by applying an appropriate digital compensator to the accelerometers.
本文比较了二加速度计法、四加速度计法和感应线圈法等三种火箭弹滚转角测量方法,并详细地分析了该方法的测试原理误差。
Three test methods, including two-accelerometers method, four-accelerometers method and geomagnetic induction coil method, for measuring rocket rotation angle are put forward in this paper.
在此基础上,对整个加速度计系统的误差来源进行了分析。
On the base, the error sources of the whole accelerator "s system are analyzed."
本文提出了一种多个加速度计的冗余制导方案,以仪表误差引起的制导命中误差最小为准则,用协方差分析法,导出加速计最佳安装方位。
This paper presents a multi-accelerometer redundant guidance scheme. The optimum orientations of accelerometers are derived to minimize the missing distance caused by instrument errors.
仿真和试验对标定编排改进前后的标定精度和导航性能进行了对比,表明改进编排方案可以提高陀螺和加速度计安装误差角标定精度,改善系统导航性能。
Simulation and test results of a laser gyro strapdown inertial navigation system show that the improved calibration scheme can increase the calibration accuracy and improve the navigation performance.
本文的目的在于探讨采用浮标测波在原理上的误差,以及在理论上分析造成加速度计测波浮标输出存在的波形漂移和畸变的原因及其必然性。
This paper is intended to discuss its principle error and analyse the cause of wave-deformation and drift in the output and its inevitability.
所提出的测试方案和辨识方法解决了地球自转角速度对陀螺加速度计的输出造成周期性误差这一重要问题。
The test scheme and identification method were given which solved the problem of periodic error caused by the earth rotation angular velocity.
所提出的测试方案和辨识方法解决了地球自转角速度对陀螺加速度计的输出造成周期性误差这一重要问题。
The test scheme and identification method were given which solved the problem of periodic error caused by the earth rotation angular velocity.
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