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Modeling method for quartz flexible accelerometer starting model

A technology of accelerometer and modeling method, which is applied in calculation, instrumentation, electrical digital data processing, etc., and can solve the problem of less research on the modeling method of accelerometer start-up process

Inactive Publication Date: 2012-01-25
济宁金信工程技术有限公司
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Problems solved by technology

[0003] In the working process of the inertial navigation system, there is usually an initialization start-up process. At present, the research on the modeling of the sensor start-up process in the inertial navigation system mainly focuses on the gyroscope, while the research on the modeling method of the accelerometer start-up process is less

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  • Modeling method for quartz flexible accelerometer starting model
  • Modeling method for quartz flexible accelerometer starting model
  • Modeling method for quartz flexible accelerometer starting model

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Embodiment Construction

[0045] Below in conjunction with accompanying drawing, the technical scheme of invention is described in detail:

[0046] like Figure 9 The modeling method of the starting model of the quartz flexible accelerometer shown includes the following steps:

[0047] Step 1, collecting the start-up process data of the JSD-I / A quartz flexible accelerometer, specifically includes the following steps:

[0048] Step 1-1, install the JSD-I / A quartz flexible accelerometer on the SCF-1 dual-axis digital display turntable through the fixture, adjust the level of the turntable reference plane, and make the accelerometer sensitive axis perpendicular to the turntable reference plane;

[0049] Step 1-2, use the Agilent 34401A digital multimeter to sample the signal output by the JSD-I / A quartz flexible accelerometer, and output the sampling result to the Lenovo E43A notebook computer, and get the following figure 1The data shown {x k ,k},{x k , k} means that the data of the kth collected sig...

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Abstract

The invention relates to a modeling method for a quartz flexible accelerometer starting model, and belongs to the field of navigation and control research of delivery vehicles. The method comprises the following steps of: performing data sampling on a quartz flexible accelerometer starting process; de-noising the sampled quartz flexible accelerometer starting process data by using Daubechies wavelet to acquire time sequence data; extracting an exponential tread term and a linear trend term of the time sequence data; standardizing the time sequence data after the trend term is extracted; determining category of the time sequence model according to characteristics of an autocorrelation function and a partial autocorrelation function of the time sequence data and modeling by using a proper model; and estimating parameters of the time sequence data model and establishing the time sequence analysis-based quartz flexible accelerometer starting model. The invention provides the modeling method for the time sequence analysis-based quartz flexible accelerometer starting model. Research personnel are helped to more deeply analyze the accelerometer starting process.

Description

technical field [0001] The invention relates to a modeling method of a starting model of a quartz flexible accelerometer, which belongs to the research field of vehicle navigation and control. Background technique [0002] The vehicle inertial navigation system is an autonomous navigation system that does not depend on external information and does not radiate energy to the outside. It is widely used in the field of vehicle navigation. Its working environment includes not only the air, the ground, but also underwater. The inertial navigation system of the vehicle is a dead reckoning navigation method, that is, the position of the next point is calculated from the position of a known point based on the continuously measured course angle and speed of the vehicle, so that the current position of the moving body can be continuously measured. Location. The gyroscope in the inertial navigation system is used to form a navigation coordinate system to stabilize the measurement axis...

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Application Information

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IPC IPC(8): G06F17/50
Inventor 赵池航钟欣何杰连捷
Owner 济宁金信工程技术有限公司
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