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A digital and pulse conversion system and method for inertial products

A pulse conversion and product technology, which is applied in the field of signal processing, can solve the problems that new inertial products are not suitable for inertial product signal acquisition schemes, and achieve the effects of retaining real-time performance, simplifying system design, and simple operation

Active Publication Date: 2018-03-09
BEIJING AEROSPACE AUTOMATIC CONTROL RES INST +1
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Problems solved by technology

[0003] The technical problem of the present invention is: to overcome the deficiencies of the existing technology, to provide a digital and pulse conversion system and method for inertial products, and to solve the problem that the new inertial products with digital output are not suitable for traditional products according to the idea of ​​mathematical integration. Problems with the signal acquisition scheme of inertial products

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  • A digital and pulse conversion system and method for inertial products
  • A digital and pulse conversion system and method for inertial products
  • A digital and pulse conversion system and method for inertial products

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Embodiment 1

[0055] To perform digital / pulse conversion on digital quantities with an input range of -128 to 127 and a frequency of 100Hz, the pulse equivalent is required to be 10Hz / LSB, and the digital input sequence is (30, -10, 0, -50, 100...), such as figure 2 shown. design figure 1 As shown in the digital / pulse conversion system, the steps of the conversion method are as follows:

[0056] (1) The data read-in frequency Fi is the input frequency of the data source, that is, 100Hz;

[0057] (2) Set the maximum output frequency Fo. The full-scale output frequency should be 1280Hz. In order to make Fo an integral multiple of Fi and greater than 1280Hz, take Fo as 2000Hz;

[0058] (3) Set the pulse equivalent to 10Hz / LSB as required, that is, the corresponding relationship between digital input and pulse output is that each LSB corresponds to an output frequency of 10Hz;

[0059] (4) The pulse active level width T is 0.1ms, satisfying 2T<1 / Fo, the active level can be high level or lo...

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Abstract

A digital and pulse conversion system and method for inertial products, using the idea of ​​mathematical integration, by setting conversion frequency, overflow threshold and other parameters, using two identical integrators to respectively convert the positive and negative numbers of digital input data Integrate to transform the digital input signal into a uniform dual-channel pulse output signal. It is suitable for inertial systems, making new inertial products with digital output compatible with traditional pulse acquisition circuits.

Description

technical field [0001] The invention relates to a digital and pulse conversion system and method for inertial products, belonging to the technical field of signal processing. Background technique [0002] With the upgrading of aerospace products, many control systems need to be transformed. An important aspect of the transformation is to replace new inertial products to improve navigation accuracy. Traditional mechanical inertial products all use the current signal output method. Because the current signal is an analog signal, it cannot be directly recognized by the computer. For the convenience of processing, it is usually converted into a dual-channel pulse signal by an I / F conversion circuit and output to the computer. . Therefore, the traditional navigation computer products all have pulse input interfaces, and the navigation algorithm is also designed based on the way of pulse accumulation. At present, many new inertial products, such as laser gyroscopes, MEMS gyrosco...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03M1/86
Inventor 郭波涛王焱宁王慧慧董沛君
Owner BEIJING AEROSPACE AUTOMATIC CONTROL RES INST
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