CN104991548A - Detection method of control system in ground measurement and control instrument - Google Patents
Detection method of control system in ground measurement and control instrument Download PDFInfo
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- CN104991548A CN104991548A CN201510262988.3A CN201510262988A CN104991548A CN 104991548 A CN104991548 A CN 104991548A CN 201510262988 A CN201510262988 A CN 201510262988A CN 104991548 A CN104991548 A CN 104991548A
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- control
- instrument
- resistance
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0218—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterised by the fault detection method dealing with either existing or incipient faults
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Testing Of Engines (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
The invention provides a detection method of a control system in a ground measurement and control instrument. The method is characterized by comprising the steps of: (1) determining the type of output signals of a control part of the ground measurement and control instrument; (2) determining the magnitude scope of the output signals of the control part; (3) determining equivalent resistance of a control loop in each related accessory; (4) determining an allowable error of the output signals of the control part in the ground measurement and control instrument according to the technical requirements of engine accessories; (5) Connecting test conductive wires with two-wire system resistance lower than 0.001[omega] with an input control part of the ground measurement and control instrument and a precise resistor box; (6) connecting output ends of an anode and a cathode of a high-precision digital voltmeter with the precise resistor box; (7) setting an input switch of the ground measurement and control instrument to a position to be tested; (8) adjusting an input turn button of the ground measurement and control instrument to a corresponding control output position; and (9) adjusting the resistance of the precise resistor box so as to enable the resistance of the precise resistor box to be consistent with equivalent resistance of the control loops.
Description
Technical field:
This method is for controlling aviation turbofan engine rotating speed and input control apparatus technical field, for control system in engines ground measurement and control instrument, also adapts to the detection method with other input control type equipment.
Background technology:
At present, having come by ground observing and controlling instrument quiet, the dynamic chek work of engine accessory power rating, is the testing apparatus that test bay must lack with repairing engine tune-up and outfield engine maintenance.And ground observing and controlling instrument is when carrying out static check to engine, once go wrong, what generally adopt is compare to measurement and control instrument with annex more reliable on engine, assesses the method for the order of accuarcy of control section in ground observing and controlling instrument.But this method cannot ensure the accuracy judged annex and ground observing and controlling instrument, because annex is the equipment on engine, instead of standard, cause regular replacing annex and ground observing and controlling instrument, cause test run normally to carry out.Also cannot ensure that outfield is to the conventional maintenance of engine and repair work, thus affect the normal flight of aircraft.
Summary of the invention:
The object of the invention is to provide a kind of detection method to control system in the measurement and control instrument of ground, to avoid the erroneous judgement produced annex and ground observing and controlling instrument.
The invention is achieved through the following technical solutions:
The detection method of control system in ground observing and controlling instrument, this method comprises the following steps:
(1) type of the control section output signal of ground measurement and control instrument is determined;
(2) the value scope that control section outputs signal is determined;
(3) equivalent resistance of control loop in each related accessories is determined;
(4) according to engine accessory power rating technical requirement, the permissible error of control section output signal in the measurement and control instrument of ground is determined;
(5) use two-wire system resistance to be less than the test lead of 0.001 Ω, connect ground observing and controlling instrument input control and precision resistance case;
(6) output terminal of high accuracy number voltage table positive and negative electrode is connected with precision resistance case;
(7) input switch of ground observing and controlling instrument is placed the position of setup test;
(8) input knob is regulated to be positioned over corresponding control outgoing position;
(9) adjustment precision resistance box resistance, makes its resistance consistent with the equivalent resistance of control loop;
(10) regulate input knob to minimum, the potential value that record high accuracy number voltage table records;
(11) rotate from being minimal to maximum position, the potential value that record maximum position control system exports;
(12) the value scope measuring the potential value that obtains and input control signal is compared, determine that the output of ground measurement and control instrument is whether within the scope of the value of input control signal, to determine ground measurement and control instrument accuracy.
The advantage of this method: adopt this method, one is under static state, can confirm the accuracy of ground observing and controlling instrument, can make correct judgement to the state of the art of annex, save the time of constantly carrying out changing annex and ground observing and controlling instrument and wasting, drastically increase work efficiency.Two is that ground observing and controlling instrument is controlling, in engine condition process, once go wrong, to make correct judgement to produced problem, ensure engine run performance accurately and reliably, avoid the checking work of repetition test run, save the fuel cost repeating test run and consume, improve test stand operation efficiency.Ensure that outfield is to the conventional maintenance of engine and repair work, guarantees the normal flight of aircraft.
Accompanying drawing illustrates:
Fig. 1 is the detection method schematic diagram of control system in ground observing and controlling instrument.
Embodiment:
The detection method of control system in ground observing and controlling instrument, this method comprises the following steps:
(1) the output signal type of annex is detected, determine that ground measurement and control instrument controls the type of output signal, as electric current, resistance or voltage;
(2) according to the principle of control temperature of engine accessory power rating " temperature control amplifier ", determine the temperature control scope of T1, T3, T6 temperature, and the resistance of input control knob in the measurement and control instrument of ground is measured, specify value scope and this temperature control commensurate in scope of control section output signal in the measurement and control instrument of ground;
(3) measure T1, T3, T6 temperature survey loop internal resistance (comprising bundle conductor) respectively, determine the corresponding equivalent resistance of annex in each control loop;
(4) according to engine accessory power rating technical requirement, calculate the permissible error of control section in ground observing and controlling instrument, by " temperature input switch " in ground observing and controlling instrument respectively with " T1 input control knob ", " T3 T6 input control knob "; " UT615 socket " temperature output signal; The temperature controlled equivalent resistance of T1, T3, T6 is corresponding, constantly debugs, control section permissible error requirement in the ground observing and controlling instrument making it reach to calculate, and determines control section zero point and permissible error of working to the last minute;
(5) according to the requirement of (4), the detection table of input control circuit can be listed, in table 1;
(6) use resistance to be less than two wires of 0.001 Ω, wire one end and ground observing and controlling instrument export control signal and are connected, and the wire other end is connected with precision resistance case;
(7) extension line on the output terminal positive and negative electrode of high accuracy number voltage table is connected with the terminal of precision resistance case;
(8) input switch of ground observing and controlling instrument is positioned over the position of setup test;
(9) input knob is regulated to be positioned over corresponding control outgoing position;
(10) adjustment precision resistance box resistance, makes its resistance consistent with the equivalent resistance of control loop;
(11) input knob is regulated according to table 1, the actual potential value that record high accuracy number voltage table records;
(12) permissible error measuring actual potential value and the output control circuit signal obtained is compared, the accuracy of control section in ground observing and controlling instrument can be judged.
To change engine accessory power rating: certain test bay with ground measurement and control instrument to engine static check time, rotate " the T1 input control knob " of ground measurement and control instrument, the pointer of anti-asthma voltage table does not swing thereupon, for this reason, for this fault, engine anti-surging regulator annex is changed, then carry out inspection fault still; Change ground observing and controlling instrument again, inspection fault is carried out still to it; Again engine temperature-control amplifier annex is changed, then inspection fault is carried out still to it; Change ground measurement and control instrument, fault still cannot be got rid of again, through the time of 3 days, repeatedly change annex and equipment, fault is just got rid of, the continuous replacing annex of this blindness and the arrange distinguish method of equipment, great puzzlement is brought to malfunction elimination, causes manpower and waste of time.In order to solve the troubleshooting method of this blindness, existing by the detection method to control section in the measurement and control instrument of ground, the state of the art of engine accessory power rating is made and judges accurately, the steps include:
1) the output signal type of annex is detected, determine that ground measurement and control instrument controls to export for voltage signal;
2) according to the principle of control temperature of engine accessory power rating " temperature control amplifier ", determine the temperature control scope of T1, T3, T6 temperature, and the resistance of input control knob in the measurement and control instrument of ground is measured, specify value scope and this temperature control commensurate in scope of control section output signal in the measurement and control instrument of ground, temperature control scope is in table 1;
3) measure T1, T3, T6 temperature survey loop internal resistance (comprising bundle conductor) respectively and determine the corresponding equivalent resistance of annex in each control loop, resistance is in table 1;
4) according to engine accessory power rating technical requirement, calculate the permissible error of control section in ground observing and controlling instrument, by " temperature input switch " in ground observing and controlling instrument respectively with " T1 input control knob ", " T3 T6 input control knob "; " UT615 socket " temperature output signal; The temperature controlled equivalent resistance of T1, T3, T6 is corresponding, constantly debugs, control section permissible error requirement in the ground observing and controlling instrument making it reach to calculate, to determine control section zero point and to work to the last minute permissible error in table 1;
5) use resistance to be less than two wires of 0.001 Ω, wire one end and ground observing and controlling instrument export control signal and are connected, and the wire other end is connected as shown in Figure 1 with precision resistance case;
6) extension line on the output terminal positive and negative electrode of high accuracy number voltage table is connected as shown in Figure 1 with the terminal of precision resistance case;
7) input switch of ground observing and controlling instrument is placed the position of setup test;
9) input knob is regulated to be positioned over corresponding control outgoing position;
10) adjustment precision resistance box resistance, makes its resistance consistent with the equivalent resistance of control loop;
11) regulate input knob as requested, the actual potential value recorded by high accuracy number voltage table, record in Table 1;
12) actual potential value measurement obtained and permissible error compare, and can judge the accuracy of control section in ground observing and controlling instrument.
The monitoring and testing work of control section in ground observing and controlling instrument is completed by above method, ensure that accuracy and the reliability of ground observing and controlling instrument, ground observing and controlling instrument is as equipment accurately and reliably, the time of state of the art about half an hour of engine accessory power rating is made accurate judgment, without the need to comparing blindly, from the troubleshooting time originally needing about 3 days, shorten to 30 minutes, drastically increase work efficiency.The method, not only for control system in engines ground measurement and control instrument, also adapts to the detection method with other input control type equipment.Have promotional value widely, the method is now practicing, achieves good effect.
The detection table of table 1 output control circuit
Claims (1)
1. the detection method of control system in ground observing and controlling instrument, is characterized in that, comprise the following steps:
(1) type of the control section output signal of ground measurement and control instrument is determined;
(2) the value scope that control section outputs signal is determined;
(3) equivalent resistance of control loop in each related accessories is determined;
(4) according to engine accessory power rating technical requirement, the permissible error of control section output signal in the measurement and control instrument of ground is determined;
(5) use two-wire system resistance to be less than the test lead of 0.001 Ω, connect ground observing and controlling instrument input control and precision resistance case;
(6) output terminal of high accuracy number voltage table positive and negative electrode is connected with precision resistance case;
(7) input switch of ground observing and controlling instrument is placed the position of setup test;
(8) ground measurement and control instrument input knob is regulated to be positioned over corresponding control outgoing position;
(9) adjustment precision resistance box resistance, makes its resistance consistent with the equivalent resistance of control loop;
(10) regulate input knob to minimum, the potential value that record high accuracy number voltage table records;
(11) rotate from being minimal to maximum position, the potential value that record maximum position control system exports;
(12) the value scope measuring the potential value that obtains and input control signal is compared, determine that the output of ground measurement and control instrument is whether within the scope of the value of input control signal, to determine ground measurement and control instrument accuracy.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510262988.3A CN104991548B (en) | 2015-05-21 | 2015-05-21 | The detection method of control system in a kind of ground observing and controlling instrument |
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| CN201510262988.3A CN104991548B (en) | 2015-05-21 | 2015-05-21 | The detection method of control system in a kind of ground observing and controlling instrument |
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| CN104991548B CN104991548B (en) | 2017-09-26 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5172067A (en) * | 1991-05-20 | 1992-12-15 | Commonwealth Edison Company | Apparatus for determining DC resistance in high voltage winding with nonlinear resistance energy dissipation circuit |
| CN200962141Y (en) * | 2005-10-10 | 2007-10-17 | 湖南工业大学 | A power electromotive force and internal resistance measurement instrument |
| CN203773345U (en) * | 2013-12-18 | 2014-08-13 | 江苏杰创科技有限公司 | Automatic verification apparatus of transformer temperature measurement-control instrument |
| CN104297553A (en) * | 2014-10-28 | 2015-01-21 | 矽力杰半导体技术(杭州)有限公司 | Output voltage detection circuit, control circuit and switch-type converter |
| CN204203445U (en) * | 2014-11-14 | 2015-03-11 | 重庆泊津科技有限公司 | Measuring equipment rolling inspection device |
-
2015
- 2015-05-21 CN CN201510262988.3A patent/CN104991548B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5172067A (en) * | 1991-05-20 | 1992-12-15 | Commonwealth Edison Company | Apparatus for determining DC resistance in high voltage winding with nonlinear resistance energy dissipation circuit |
| CN200962141Y (en) * | 2005-10-10 | 2007-10-17 | 湖南工业大学 | A power electromotive force and internal resistance measurement instrument |
| CN203773345U (en) * | 2013-12-18 | 2014-08-13 | 江苏杰创科技有限公司 | Automatic verification apparatus of transformer temperature measurement-control instrument |
| CN104297553A (en) * | 2014-10-28 | 2015-01-21 | 矽力杰半导体技术(杭州)有限公司 | Output voltage detection circuit, control circuit and switch-type converter |
| CN204203445U (en) * | 2014-11-14 | 2015-03-11 | 重庆泊津科技有限公司 | Measuring equipment rolling inspection device |
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| CN104991548B (en) | 2017-09-26 |
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Address after: Fengcheng Weiyang District ten road 710021 Shaanxi city of Xi'an Province Patentee after: AECC AVIATION POWER CO,LTD. Address before: Fengcheng Weiyang District ten road 710021 Shaanxi city of Xi'an Province Patentee before: AVIC AVIATION ENGINE Corp.,PLC Address after: Fengcheng Weiyang District ten road 710021 Shaanxi city of Xi'an Province Patentee after: AVIC AVIATION ENGINE Corp.,PLC Address before: Fengcheng Weiyang District ten road 710021 Shaanxi city of Xi'an Province Patentee before: XI'AN AVIATION POWER Co.,Ltd. |
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