阅读说明：本技术 一种飞控系统stp参数调节方法 (Flight control system STP parameter adjusting method ) 是由 孟宪锋 朱可一 陈瑶 于 2020-07-24 设计创作，主要内容包括：本发明涉及飞行控制领域,提出一种飞控系统STP参数调节方法,包括：第一部分,MFS调零偏差计算,包括偏差落在调零偏差上下限之间、偏差落在调零偏差下限之外、偏差落在调零偏差上限之外三种情况；第二部分,MFS调零增益计算,包括增益落在调零增益上下限之间、增益落在调零增益下限之外、增益落在调零增益上限之外三种情况。本发明针对输入、调零偏差和增益的上下限变化、容差变化等情况,可以灵活调节测试参数,确保测试用例覆盖所有测试范围,包括验证边界值,避免盲目试凑导致测试结果总是落在一个区间内,减少重复设计和测试。(The invention relates to the field of flight control, and provides a flight control system STP parameter adjusting method, which comprises the following steps: the first part, MFS zero-setting deviation calculation, including three cases that the deviation falls between the upper and lower limits of the zero-setting deviation, the deviation falls outside the lower limit of the zero-setting deviation, and the deviation falls outside the upper limit of the zero-setting deviation; and the second part, MFS zero setting gain calculation, comprises three conditions that the gain falls between the upper limit and the lower limit of the zero setting gain, the gain falls outside the lower limit of the zero setting gain and the gain falls outside the upper limit of the zero setting gain. The invention can flexibly adjust the test parameters aiming at the conditions of input, zero-setting deviation, upper and lower limit variation of gain, tolerance variation and the like, ensures that the test case covers all test ranges including a verification boundary value, avoids that the test result always falls in one interval caused by blind trial and error, and reduces repeated design and test.)

1. A flight control system STP parameter adjusting method is characterized by comprising the following steps:

the first part, MFS zero-setting deviation calculation, including three cases that the deviation falls between the upper and lower limits of the zero-setting deviation, the deviation falls outside the lower limit of the zero-setting deviation, and the deviation falls outside the upper limit of the zero-setting deviation;

and the second part, MFS zero setting gain calculation, comprises three conditions that the gain falls between the upper limit and the lower limit of the zero setting gain, the gain falls outside the lower limit of the zero setting gain and the gain falls outside the upper limit of the zero setting gain.

2. The flight control system STP parameter adjusting method according to claim 1, characterized in that:

the first part includes:

setting an initial deviation value and an initial LVDT position value;

calculating and judging that the difference value between the LVDT position and the retraction end stop LVDT position is larger than the tolerance for three times continuously, and increasing MFS zero setting deviation by zero setting deviation step length for three times continuously;

reducing MFS zero offset by 2 times of zero offset step length;

judging whether the MFS zero-setting deviation falls between the upper limit and the lower limit of the zero-setting deviation or outside the upper limit of the zero-setting deviation;

if the MFS zero setting deviation falls between the upper and lower zero setting gain limits, simulating the normal working condition of the zero setting deviation of the multifunctional spoiler; and if the MFS zero setting deviation is out of the lower limit or the upper limit of the zero setting deviation, simulating the abnormal working condition of the zero setting deviation of the multifunctional spoiler.

3. The flight control system STP parameter adjusting method according to claim 2, characterized in that:

the deviation initial value of the first part is 0.0001, and the LVDT position initial value is 0.15; the initial value of the deviation is "increased by 2 times the zeroing deviation step size of the MFS zeroing deviation" according to the zeroing deviation falling between the upper and lower limits; and the initial value of the LVDT position is obtained by the back-deducing of the determined initial value of the deviation and the tolerance.

4. The flight control system STP parameter adjusting method according to claim 2, characterized in that:

the deviation initial value of the first part is-0.1729, and the LVDT position initial value is 0.0001; the initial value of the deviation is "increased by 2 times the zeroing deviation step by the MFS zeroing deviation" according to the zeroing deviation falling outside the lower limit; and the initial value of the LVDT position is obtained by the back-deducing of the determined initial value of the deviation and the tolerance.

5. The flight control system STP parameter adjusting method according to claim 2, characterized in that:

the initial deviation value of the first part is 0.1636, and the initial position value of the LVDT is 0.4993; the initial value of the deviation is "increased by 2 times the zeroing deviation step by the MFS zeroing deviation" according to the zeroing deviation falling outside the upper limit; and the initial value of the LVDT position is obtained by the back-deducing of the determined initial value of the deviation and the tolerance.

6. The flight control system STP parameter adjusting method according to claim 1, characterized in that:

the second part includes:

setting a gain initial value and an LVDT position initial value;

setting a new position value of the LVDT;

calculating and judging that the difference value between the current beat and the previous beat of the LVDT position is smaller than the tolerance for three times continuously, and increasing MFS zero setting gain by the zero setting gain step length for three times continuously;

reducing the MFS zeroing gain by 2 times of zeroing gain step length;

decreasing the MFS zeroing gain four times in succession with 1/4 backoff gains;

and judging that the MFS zero setting gain falls between the upper limit and the lower limit of the zero setting gain or falls outside the upper limit of the zero setting gain.

If the MFS zero setting gain falls between the upper and lower zero setting gain limits, simulating the normal working condition of the zero setting gain of the multifunctional spoiler; and if the MFS zero setting gain is out of the lower limit or the upper limit of the zero setting gain, simulating the abnormal working condition of the zero setting gain of the multifunctional spoiler.

7. The flight control system STP parameter adjustment method according to claim 6, characterized in that:

the initial gain value of the second part is 0.9592, and the initial position value of the LVDT is 0.0001; the initial value of the gain is obtained by carrying out reverse extrapolation on 'increasing MFS zero setting gain by 1/4 backspacing gain for four times continuously', 'increasing MFS zero setting gain by 2 times zero setting gain step length' and 'reducing MFS zero setting gain by three times of zero setting gain step length' according to the gain deviation between the upper limit and the lower limit, and the initial value of the position of the LVDT is obtained by carrying out reverse extrapolation on the input value of the LVDT and the tolerance.

8. The flight control system STP parameter adjustment method according to claim 6, characterized in that:

the initial gain value of the second part is 0.85, and the initial LVDT position value is 0.0001; the initial value of the gain is obtained by carrying out reverse extrapolation on 'increasing MFS zero setting gain by 1/4 backspacing gain for four times continuously', 'increasing MFS zero setting gain by 2 times zero setting gain step length' and 'reducing MFS zero setting gain by three times of zero setting gain step length' according to the gain deviation outside the lower limit, and the initial value of the position of the LVDT is obtained by carrying out reverse extrapolation on the input value of the LVDT and the tolerance.

9. The flight control system STP parameter adjustment method according to claim 6, characterized in that:

the initial gain value of the second part is 1.0905, and the initial position value of the LVDT is 0.0001; the initial value of the gain is obtained by carrying out reverse extrapolation on 'increasing MFS zero setting gain by 1/4 backspacing gain for four times continuously', 'increasing MFS zero setting gain by 2 times zero setting gain step length' and 'reducing MFS zero setting gain by three times of zero setting gain step length' according to the gain deviation outside the upper limit, and the initial value of the position of the LVDT is obtained by carrying out reverse extrapolation on the input value of the LVDT and the tolerance.

Technical Field

The invention relates to the field of flight control, in particular to a flight control system STP parameter adjusting method.

Background

The simulation test Step (STP) of the multifunctional spoiler (MFS) of the flight control system adopts a two-point zero-setting algorithm to improve the accuracy of a control surface response position instruction and prevent an actuator from contacting a mechanical extension baffle. The whole parameter adjusting process of STP (fig. 1) comprises three parts of waiting, starting and ending and testing steps: the starting and ending part processes the starting of the MFS parameter adjustment test, abnormal interruption and test exit caused by various factors; the test steps of parameter adjustment are mainly executed according to test setting, MFS zero offset calculation, MFS zero gain calculation and MFS zero data storage request and clearing process. The MFS zero offset and gain calculation are the core steps of parameter adjustment, and in the adjustment process, repeated iteration is needed according to input change or parameter change, and if the adjustment is implemented only by a trial and error method, all test ranges are difficult to cover, and repeated design can also be caused.

Disclosure of Invention

The invention aims to provide an STP parameter adjusting method for a flight control system, which summarizes the parameter adjusting process of the zeroing deviation and the gain calculation of a multifunctional spoiler, can adjust test cases in time according to input change or parameter change, can cover all test ranges, and avoids repeated test case design caused by a trial and error method.

The technical scheme adopted by the invention is that,

a flight control system STP parameter adjusting method comprises the following steps:

the first part, MFS zero-setting deviation calculation, including three cases that the deviation falls between the upper and lower limits of the zero-setting deviation, the deviation falls outside the lower limit of the zero-setting deviation, and the deviation falls outside the upper limit of the zero-setting deviation;

and the second part, MFS zero setting gain calculation, comprises three conditions that the gain falls between the upper limit and the lower limit of the zero setting gain, the gain falls outside the lower limit of the zero setting gain and the gain falls outside the upper limit of the zero setting gain.

The first part includes:

setting an initial deviation value and an initial LVDT position value;

calculating and judging that the difference value between the LVDT position and the retraction end stop LVDT position is larger than the tolerance for three times continuously, and increasing MFS zero setting deviation by zero setting deviation step length for three times continuously;

reducing MFS zero offset by 2 times of zero offset step length;

judging whether the MFS zero-setting deviation falls between the upper limit and the lower limit of the zero-setting deviation or outside the upper limit of the zero-setting deviation;

if the MFS zero setting deviation falls between the upper and lower zero setting gain limits, simulating the normal working condition of the zero setting deviation of the multifunctional spoiler; and if the MFS zero setting deviation is out of the lower limit or the upper limit of the zero setting deviation, simulating the abnormal working condition of the zero setting deviation of the multifunctional spoiler.

The deviation initial value of the first part is 0.0001, and the LVDT position initial value is 0.15; the initial value of the deviation is "increased by 2 times the zeroing deviation step size of the MFS zeroing deviation" according to the zeroing deviation falling between the upper and lower limits; and the initial value of the LVDT position is obtained by the back-deducing of the determined initial value of the deviation and the tolerance.

The deviation initial value of the first part is-0.1729, and the LVDT position initial value is 0.0001; the initial value of the deviation is "increased by 2 times the zeroing deviation step by the MFS zeroing deviation" according to the zeroing deviation falling outside the lower limit; and the initial value of the LVDT position is obtained by the back-deducing of the determined initial value of the deviation and the tolerance.

The initial deviation value of the first part is 0.1636, and the initial position value of the LVDT is 0.4993; the initial value of the deviation is "increased by 2 times the zeroing deviation step by the MFS zeroing deviation" according to the zeroing deviation falling outside the upper limit; and the initial value of the LVDT position is obtained by the back-deducing of the determined initial value of the deviation and the tolerance.

The second part includes:

setting a gain initial value and an LVDT position initial value;

setting a new position value of the LVDT;

calculating and judging that the difference value between the current beat and the previous beat of the LVDT position is smaller than the tolerance for three times continuously, and increasing MFS zero setting gain by the zero setting gain step length for three times continuously;

reducing the MFS zeroing gain by 2 times of zeroing gain step length;

decreasing the MFS zeroing gain four times in succession with 1/4 backoff gains;

and judging that the MFS zero setting gain falls between the upper limit and the lower limit of the zero setting gain or falls outside the upper limit of the zero setting gain.

If the MFS zero setting gain falls between the upper and lower zero setting gain limits, simulating the normal working condition of the zero setting gain of the multifunctional spoiler; and if the MFS zero setting gain is out of the lower limit or the upper limit of the zero setting gain, simulating the abnormal working condition of the zero setting gain of the multifunctional spoiler.

The initial gain value of the second part is 0.9592, and the initial position value of the LVDT is 0.0001; the initial value of the gain is obtained by carrying out reverse extrapolation on 'increasing MFS zero setting gain by 1/4 backspacing gain for four times continuously', 'increasing MFS zero setting gain by 2 times zero setting gain step length' and 'reducing MFS zero setting gain by three times of zero setting gain step length' according to the gain deviation between the upper limit and the lower limit, and the initial value of the position of the LVDT is obtained by carrying out reverse extrapolation on the input value of the LVDT and the tolerance.

The initial gain value of the second part is 0.85, and the initial LVDT position value is 0.0001; the initial value of the gain is obtained by carrying out reverse extrapolation on 'increasing MFS zero setting gain by 1/4 backspacing gain for four times continuously', 'increasing MFS zero setting gain by 2 times zero setting gain step length' and 'reducing MFS zero setting gain by three times of zero setting gain step length' according to the gain deviation outside the lower limit, and the initial value of the position of the LVDT is obtained by carrying out reverse extrapolation on the input value of the LVDT and the tolerance.

The initial gain value of the second part is 1.0905, and the initial position value of the LVDT is 0.0001; the initial value of the gain is obtained by carrying out reverse extrapolation on 'increasing MFS zero setting gain by 1/4 backspacing gain for four times continuously', 'increasing MFS zero setting gain by 2 times zero setting gain step length' and 'reducing MFS zero setting gain by three times of zero setting gain step length' according to the gain deviation outside the upper limit, and the initial value of the position of the LVDT is obtained by carrying out reverse extrapolation on the input value of the LVDT and the tolerance.

The invention has the advantages and beneficial effects that: aiming at the conditions of input, zero-setting deviation, upper and lower limit variation of gain, tolerance variation and the like, the test parameters can be flexibly adjusted, the test case is ensured to cover all test ranges including a verification boundary value, the test result is prevented from always falling in an interval caused by blind trial and error, and repeated design and test are reduced.

Drawings

Fig. 1 is a parameter adjustment process diagram of the multifunctional spoiler, wherein I: test waiting, II: starting and ending the test, including starting, interrupting, exiting test failure and exiting test, and III: a testing step, comprising: test setting, MFS zero offset calculation, MFS zero gain calculation, MFS zero data storage request and clearing.

Detailed Description

The invention provides a flight control system STP parameter adjusting method, as shown in figure 1, comprising:

the first part, MFS zero-set deviation calculation, includes three cases that the deviation falls between the upper and lower limits of the zero-set deviation, the deviation falls outside the lower limit of the zero-set deviation, and the deviation falls outside the upper limit of the zero-set deviation, including:

setting an initial deviation value and an initial LVDT position value; there are three groups of values corresponding to three situations that the deviation falls between the upper and lower limits of the zero-set deviation, the deviation falls outside the lower limit of the zero-set deviation, and the deviation falls outside the upper limit of the zero-set deviation:

the initial deviation value is 0.0001, and the initial LVDT position value is 0.15; the initial value of the deviation is "increased by 2 times the zeroing deviation step size of the MFS zeroing deviation" according to the zeroing deviation falling between the upper and lower limits; and the initial value of the LVDT position is obtained by the back-deducing of the determined initial value of the deviation and the tolerance.

The initial deviation value is-0.1729, and the initial LVDT position value is 0.0001; the initial value of the deviation is "increased by 2 times the zeroing deviation step by the MFS zeroing deviation" according to the zeroing deviation falling outside the lower limit; and the initial value of the LVDT position is obtained by the back-deducing of the determined initial value of the deviation and the tolerance.

The initial value of the deviation is 0.1636, and the initial value of the LVDT position is 0.4993; the initial value of the deviation is "increased by 2 times the zeroing deviation step by the MFS zeroing deviation" according to the zeroing deviation falling outside the upper limit; and the initial value of the LVDT position is obtained by the back-deducing of the determined initial value of the deviation and the tolerance.

Calculating and judging that the difference value between the LVDT position and the retraction end stop LVDT position is larger than the tolerance for three times continuously, and increasing MFS zero setting deviation by zero setting deviation step length for three times continuously;

reducing MFS zero offset by 2 times of zero offset step length;

and judging that the MFS zero-setting deviation falls between the upper limit and the lower limit of the zero-setting deviation or falls outside the upper limit of the zero-setting deviation.

If the MFS zero setting deviation falls between the upper and lower zero setting gain limits, simulating the normal working condition of the zero setting deviation of the multifunctional spoiler; and if the MFS zero setting deviation is out of the lower limit or the upper limit of the zero setting deviation, simulating the abnormal working condition of the zero setting deviation of the multifunctional spoiler.

And the second part, MFS zero setting gain calculation, comprises three conditions that the gain falls between the upper and lower limits of the zero setting gain, the gain falls outside the lower limit of the zero setting gain and the gain falls outside the upper limit of the zero setting gain, and comprises the following steps:

setting a gain initial value and an LVDT position initial value; there are three groups of values, which respectively correspond to three cases that the gain falls between the upper and lower limits of the zeroing gain, the gain falls outside the lower limit of the zeroing gain, and the gain falls outside the upper limit of the zeroing gain:

the initial value of the gain is 0.9592, and the initial value of the LVDT position is 0.0001; the initial value of the gain is obtained by carrying out reverse extrapolation on 'increasing MFS zero setting gain by 1/4 backspacing gain for four times continuously', 'increasing MFS zero setting gain by 2 times zero setting gain step length' and 'reducing MFS zero setting gain by three times of zero setting gain step length' according to the gain deviation between the upper limit and the lower limit, and the initial value of the position of the LVDT is obtained by carrying out reverse extrapolation on the input value of the LVDT and the tolerance.

The initial gain value is 0.85, and the initial LVDT position value is 0.0001; the initial value of the gain is obtained by carrying out reverse extrapolation on 'increasing MFS zero setting gain by 1/4 backspacing gain for four times continuously', 'increasing MFS zero setting gain by 2 times zero setting gain step length' and 'reducing MFS zero setting gain by three times of zero setting gain step length' according to the gain deviation outside the lower limit, and the initial value of the position of the LVDT is obtained by carrying out reverse extrapolation on the input value of the LVDT and the tolerance.

The initial value of the gain is 1.0905, and the initial value of the LVDT position is 0.0001; the initial value of the gain is obtained by carrying out reverse extrapolation on 'increasing MFS zero setting gain by 1/4 backspacing gain for four times continuously', 'increasing MFS zero setting gain by 2 times zero setting gain step length' and 'reducing MFS zero setting gain by three times of zero setting gain step length' according to the gain deviation outside the upper limit, and the initial value of the position of the LVDT is obtained by carrying out reverse extrapolation on the input value of the LVDT and the tolerance.

Setting a new position value of the LVDT;

calculating and judging that the difference value between the current beat and the previous beat of the LVDT position is less than the tolerance for three times continuously, and increasing the MFS zero setting gain by the zero setting gain step length for three times continuously

Reducing the MFS zeroing gain by 2 times of zeroing gain step length;

decreasing the MFS zeroing gain four times in succession with 1/4 backoff gains;

and judging that the MFS zero setting gain falls between the upper limit and the lower limit of the zero setting gain or falls outside the upper limit of the zero setting gain.

If the MFS zero setting gain falls between the upper and lower zero setting gain limits, simulating the normal working condition of the zero setting gain of the multifunctional spoiler; and if the MFS zero setting gain is out of the lower limit or the upper limit of the zero setting gain, simulating the abnormal working condition of the zero setting gain of the multifunctional spoiler.