Turboshaft engine control performance index extraction method based on test data

A technology for controlling performance indicators and turboshaft engines, which is applied in the field of extracting control performance indicators of turboshaft engines based on test data, can solve problems such as poor accuracy, and achieve the effect of improving accuracy and effective extraction

Inactive Publication Date: 2016-02-03
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology

[0005] In order to overcome the deficiency of poor accuracy of existing control performance index extraction method

Method used

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  • Turboshaft engine control performance index extraction method based on test data
  • Turboshaft engine control performance index extraction method based on test data
  • Turboshaft engine control performance index extraction method based on test data

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Embodiment Construction

[0021] refer to Figure 1-2 . The specific steps of the turboshaft engine control performance index extraction method based on test data in the present invention are as follows:

[0022] Step 1. Select the maximum values ​​of throttle lever angle and gas turbine speed in the test data, and use them as reference values. The throttle lever angle and the gas turbine speed data are normalized and converted into relative quantities ranging from 0 to 100.

[0023] Step 2. According to the test conditions and size of the data, divide the range of the throttle stick angle relative data change into 100 intervals at equal intervals. Statistically analyze the number of data in each cell, denoted as N i . Among them, N i is the number of data in each small interval; i represents a specific interval, i=1,2,...,100.

[0024] Step 3. Select the threshold T h for 203.027. In all small intervals, the interval data whose number of data points falling into the interval is greater than th...

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Abstract

The invention discloses a turboshaft engine control performance index extraction method based on test data. The turboshaft engine control performance index extraction method based on test data is used for solving the technical problem that a current control performance index extraction method is low in accuracy. The turboshaft engine control performance index extraction method based on test data comprises: according to the characteristics of the test data of a turboshaft engine, utilizing a method of statistics to analyze the test data, and then automatically determining the stable state process and the dynamic process of a control system successively; and at last, referring to the definition of the turboshaft engine control system performance index, respectively calculating the performance index of the turboshaft engine control system, wherein a local correction method is used at the break point position of the dynamic process and the stable state process to improve the accuracy for the extracted index. The turboshaft engine control performance index extraction method based on test data can automatically extract the performance index from the large amount of test data of the turboshaft engine quickly and effectively.

Description

technical field [0001] The invention relates to a control performance index extraction method, in particular to a turboshaft engine control performance index extraction method based on test data. Background technique [0002] The performance of the control system is reflected by various performance indicators. It is very important to extract the performance index of the control system for the analysis, improvement and evaluation of the control system. Currently, there are two main types of data for extracting performance indicators, based on ideal simulation data and test operation data. [0003] Document 1 "A Rapid Extraction Method of Control System Performance Index Information Technology, 2012, Issue 12, p19-21" discloses a control performance index extraction method. This method extracts the performance index according to the ideal control performance curve, but it cannot extract the corresponding performance index according to the actual test data with noise. [000...

Claims

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Application Information

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IPC IPC(8): G05B23/02
CPCG05B23/02
Inventor 吴然然樊丁何苗康彭凯李思雨
Owner NORTHWESTERN POLYTECHNICAL UNIV
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