Automatic zero returning test system and test method for rocket nozzle

Abstract

According to the automatic zeroing test system and method for the rocket nozzle, the probability that the nozzle is possibly damaged due to misoperation or sudden acceleration and deceleration in the zeroing process is reduced, the test efficiency and the test safety are improved, and automatic zeroing of the rocket nozzle from any position is achieved. The system comprises an automatic test module, an instruction receiving and sending module, a data acquisition module, a parameter configuration module and a data analysis and storage module.

Description

Technical Field

[0001] The invention belongs to the technical field of rocket nozzle testing, and in particular relates to an automatic zero return testing system and a testing method for a rocket nozzle. Background Art

[0002] During installation or ground performance test verification, the rocket nozzle needs to stay at any position to facilitate sensor installation or check for mechanical interference. In existing tests, the nozzle needs to return to the initial zero position from any position after the tester visually inspects the nozzle position. If it is close to the initial zero position, the ground test equipment is directly operated to send a zero position command to the servo system on the nozzle to quickly return to zero. If it is far from the initial zero position, it is necessary to manually input the target position on the test equipment multiple times, so that the nozzle segments gradually approach the zero position, and then send a zero position command to return to zero. During the return to zero process, the nozzle speed is relatively high, and there is a possibility of damage to the nozzle due to sudden acceleration and deceleration. In addition, there is a possibility of misoperation when the tester manually inputs the target position. The test efficiency is relatively low, the test cycle is relatively long, the test cost is increased, and there are safety hazards. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and provide an automatic zero return test system and test method for a rocket nozzle, thereby reducing the probability that the nozzle may be damaged by misoperation or sudden acceleration or deceleration, and improving the test efficiency and test safety.

[0004] The present invention provides an automatic zero return test system for a rocket nozzle, which belongs to ground test equipment and is mainly used to control the position and speed of the servo system on the nozzle during the installation of the rocket nozzle or the ground performance test verification, so that the nozzle stopped at any position can be safely and quickly returned to the initial zero position. The system includes five parts: an automatic test module, an instruction receiving and sending module, a data acquisition module, a parameter configuration module, and a data analysis and storage module.

[0005] The automated test module mainly realizes the automated test of the servo system on the nozzle. At the beginning of the test, the automated test module loads the test parameters in the parameter configuration module; according to the test items selected by the operator, the control instructions are automatically sent to the instruction receiving and sending module, which is then sent to the servo system and reads back the telemetry signal sent back by the servo system; the automated test module also reads the nozzle displacement sensor data collected by the data acquisition module and the data interpretation results of the data analysis and storage module.

[0006] The command receiving and sending module sends control commands to the servo system on the nozzle through the data bus, and receives telemetry data sent back by the servo system.

[0007] The data acquisition module collects the voltage or current signal of the displacement sensor on the nozzle and transmits it to the automatic test module, which converts it into the position information of the nozzle.

[0008] The parameter configuration module is mainly used to view, modify and save the test information required for the current test as a configuration file, and to set the test data save location.

[0009] The data analysis and storage module is responsible for real-time analysis and interpretation of the servo system telemetry data and nozzle displacement sensor data during the test. The interpretation results are sent to the automated test module. When the data is abnormal, an alarm is triggered for manual intervention. During the test, all data is saved as binary files to facilitate future data viewing and analysis.

[0010] The present invention also provides a method for automatically returning to zero for testing a rocket nozzle, comprising the following steps:

[0011] (1) After the automatic zero return starts, the automatic test module loads the configuration parameters and obtains the test parameters such as the servo system product information, test data storage location, servo system speed, and data qualification criteria for this zero return test;

[0012] (2) The automated test module reads the physical signals such as the voltage or current of the nozzle displacement sensor fed back by the data acquisition module, and resolves them into the current position information of the nozzle; at the same time, the automated test module reads the telemetry data sent back by the servo system on the nozzle through the command receiving and sending module, and resolves the nozzle position stored in the servo system from it;

[0013] (3) Compare the nozzle position fed back by the data acquisition module and the nozzle position fed back by the servo system to see whether they are consistent;

[0014] (4) If the results of step (3) are inconsistent, the position information fed back by the data acquisition module is used as the basis, and a command is sent to the servo system to update the nozzle position information stored therein; if the results of step (3) are consistent, proceed to the next step;

[0015] (5) Based on the current position of the nozzle, the automated test module automatically plans the position route for this return to zero;

[0016] (6) The command receiving and sending module continuously sends the planned position commands to the servo system and receives the telemetry data returned by the servo system;

[0017] (7) The automated test module reads the feedback data from the data acquisition module in real time and interprets it as the current position of the nozzle;

[0018] (8) The data analysis and storage module continuously determines whether the servo system current or torque in the telemetry data is overloaded. If not, the zero return process continues; if overload occurs, an alarm prompt will pop up on the interface of the automatic test module, and the nozzle movement will be stopped immediately. The automatic zero return of the nozzle ends abnormally. After manual inspection and troubleshooting, the zero return operation can be performed again;

[0019] (9) If the nozzle reaches the zero position, the automatic zero return is completed normally. If it does not reach the zero position, repeat steps (6) to (8).

[0020] The beneficial effects of the present invention are as follows:

[0021] (1) The present invention realizes the automatic return to zero of the rocket nozzle from any position. The return to zero route is automatically generated by the test system, which reduces the probability of misoperation. The return to zero speed can be set, which reduces the probability of damage to the nozzle caused by sudden acceleration and deceleration, and improves the test quality and test safety.

[0022] (2) The present invention automatically completes the data interpretation during the test process and issues an alarm when the data is abnormal, thereby reducing a large amount of work in manual monitoring and judgment and saving test time. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a system structure diagram of an automatic return to zero test platform according to an embodiment of the present invention;

[0024] Figure 2 is a structural diagram of an automated testing module according to an embodiment of the present invention;

[0025] Figure 3 is a structural diagram of an instruction receiving and sending module according to an embodiment of the present invention;

[0026] Figure 4 is a structural diagram of a data acquisition module according to an embodiment of the present invention;

[0027] Figure 5 is a structural diagram of a parameter configuration module according to an embodiment of the present invention;

[0028] Figure 6 is a structural diagram of a data analysis and storage module according to an embodiment of the present invention;

[0029] Figure 7 1 is a flowchart of a method for automatically returning to zero for a rocket nozzle according to an embodiment of the present invention. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0031] like Figure 1 As shown, an automatic zero return test system for a rocket nozzle belongs to ground test equipment, which is mainly used to control the position and speed of the servo system on the nozzle during the installation of the rocket nozzle or the ground performance test verification, so that the nozzle stopped at any position can return to the initial zero position safely and quickly. The system includes five parts: an automatic test module, a command receiving and sending module, a data acquisition module, a parameter configuration module, and a data analysis and storage module.

[0032] The automated test module mainly realizes the automated test of the servo system on the nozzle. At the beginning of the test, the automated test module loads the test parameters in the parameter configuration module; according to the test items selected by the operator, the control instructions are automatically sent to the instruction receiving and sending module, which is then sent to the servo system and reads back the telemetry signal sent back by the servo system; the automated test module also reads the nozzle displacement sensor data collected by the data acquisition module and the data interpretation results of the data analysis and storage module.

[0033] The command receiving and sending module sends control commands to the servo system on the nozzle through the data bus, and receives telemetry data sent back by the servo system.

[0034] The data acquisition module collects the voltage or current signal of the displacement sensor on the nozzle and transmits it to the automatic test module, which converts it into the position information of the nozzle.

[0035] The parameter configuration module is mainly used to view, modify and save the test information required for the current test as a configuration file, and to set the test data save location.

[0036] The data analysis and storage module is responsible for real-time analysis and interpretation of the servo system telemetry data and nozzle displacement sensor data during the test. The interpretation results are sent to the automated test module. When the data is abnormal, an alarm is triggered for manual intervention. During the test, all data is saved as binary files to facilitate future data viewing and analysis.

[0037] like Figure 2As shown in the figure, the automatic test module is the core part of this test system, which mainly realizes the automatic test of the servo system on the nozzle. This module is divided into four parts: loading configuration parameters, generating command data, parsing data, and sending data. The loading configuration parameter part reads the test parameters required for this test from the parameter configuration module, and loads and displays them on the human-computer interaction interface, which can be viewed, modified and saved by the operator. The generating command data part automatically generates the binary data that needs to be sent to the servo system for this test according to the test parameters, test items and communication protocol requirements. The parsing data part is divided into two parts: parsing telemetry data and parsing acquisition data. Among them, parsing telemetry data is to parse the binary telemetry data returned by the servo system into meaningful physical quantity data corresponding to the communication protocol; parsing acquisition data is to parse the physical quantities such as sensor voltage or current collected by the data acquisition module into nozzle position information. The sending data part is divided into two parts: sending command data and sending storage data. Among them, sending command data is to send the command data generated in this test to the command receiving and sending module; sending storage data is to send all key data such as command data, telemetry data, and acquisition data generated in this test to the data analysis and storage module.

[0038] like Figure 3 As shown in the figure, the command receiving and sending module is divided into two parts: command receiving and command sending. It can communicate with the servo system through data buses such as 1553B, Glink, CAN, etc. The command receiving part receives the telemetry data sent back by the servo system and transmits it to the automatic test module and the data analysis and storage module; the command sending part sends the command data generated by the automatic test module to the servo system at a regular time.

[0039] like Figure 4 As shown in the figure, the data acquisition module is divided into two parts: acquisition parameter configuration and data acquisition, which mainly realizes the acquisition of feedback data from the displacement sensor on the nozzle. The acquisition parameter configuration part can configure the channel of the acquisition board according to the physical channel corresponding to the hardware circuit connection, and can set parameters such as sampling rate and sampling period; the data acquisition part collects the feedback data of the displacement sensor in real time during the test process and transmits it to the automatic test module and the data analysis and storage module.

[0040] like Figure 5 As shown in the figure, the parameter configuration module is divided into three parts: test information configuration, test parameter configuration and data storage location setting. It mainly allows operators to view and modify test parameters through the human-computer interaction interface. The test information configuration part can configure parameters such as servo system product information, test equipment information, test environment information, and test personnel. The test parameter configuration part can configure parameters such as the test items to be performed, test duration, servo system speed, and test data qualification criteria; the data storage location setting part is for the tester to select the storage location of the test data on the computer before starting the test.

[0041] like Figure 6 As shown in the figure, the data analysis and storage module is divided into three parts: data reception, data interpretation and data storage. It mainly analyzes and interprets the telemetry data and collected data in real time during the test, and saves all test data in real time on the hard disk of the test equipment. The data reception part is responsible for receiving the servo system telemetry data and nozzle displacement sensor collected data sent by the automatic test module; the data interpretation part completes the qualification judgment of the received data according to the qualification judgment criteria in the parameter configuration module, and alarms and notifies the automatic test module when the data is abnormal; the data storage part saves all the data generated by this test in the form of binary files in real time on the hard disk of the test equipment for later data analysis.

[0042] like Figure 7 As shown, a method for automatically returning to zero for a rocket nozzle comprises the following steps:

[0043] (1) After the automatic zero return starts, the automatic test module loads the configuration parameters and obtains the test parameters such as the servo system product information, test data storage location, servo system speed, and data qualification criteria for this zero return test;

[0044] (2) The automated test module reads the physical signals such as the voltage or current of the nozzle displacement sensor fed back by the data acquisition module, and resolves them into the current position information of the nozzle; at the same time, the automated test module reads the telemetry data sent back by the servo system on the nozzle through the command receiving and sending module, and resolves the nozzle position stored in the servo system from it;

[0045] (3) Compare the nozzle position fed back by the data acquisition module and the nozzle position fed back by the servo system to see whether they are consistent;

[0046] (4) If the results of step (3) are inconsistent, the position information fed back by the data acquisition module is used as the basis, and a command is sent to the servo system to update the nozzle position information stored therein; if the results of step (3) are consistent, proceed to the next step;

[0047] (5) Based on the current position of the nozzle, the automated test module automatically plans the position route for this return to zero;

[0048] (6) The command receiving and sending module continuously sends the planned position commands to the servo system and receives the telemetry data returned by the servo system;

[0049] (7) The automated test module reads the feedback data from the data acquisition module in real time and interprets it as the current position of the nozzle;

[0050] (8) The data analysis and storage module continuously determines whether the servo system current or torque in the telemetry data is overloaded. If not, the zero return process continues; if overload occurs, an alarm prompt will pop up on the interface of the automatic test module, and the nozzle movement will be stopped immediately. The automatic zero return of the nozzle ends abnormally. After manual inspection and troubleshooting, the zero return operation can be performed again;

[0051] (9) If the nozzle reaches the zero position, the automatic zero return is completed normally. If it does not reach the zero position, repeat steps (6) to (8).

[0052] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An automatic zero return test system for a rocket nozzle, characterized in that: The system is used to control the position and speed of the servo system on the nozzle. The system includes an automatic test module, a command receiving and sending module, a data acquisition module, a parameter configuration module, and a data analysis and storage module. The automated test module is used for automated testing of the servo system, and is divided into four parts: loading configuration parameters, generating instruction data, parsing data, and sending data. The command receiving and sending module sends the control command to the servo system through the data bus, and receives the telemetry data sent back by the servo system; The data acquisition module collects the voltage or current signal of the displacement sensor on the nozzle and transmits it to the automatic test module to convert it into the position information of the nozzle; The parameter configuration module allows operators to view and modify test parameters through the human-computer interaction interface, and can set the test data storage location; The data analysis and storage module is used to perform real-time analysis and interpretation of the servo system telemetry data and nozzle displacement sensor data during the test process, and the interpretation results are sent to the automated test module.

2. The automatic zero return test system for a rocket nozzle according to claim 1, characterized in that: The loading configuration parameter part reads the test parameters from the parameter configuration module, and loads and displays them on the human-computer interaction interface, which can be viewed, modified and saved by the operator; the generating instruction data part automatically generates the binary data that needs to be sent to the servo system for this test according to the test parameters, test items and communication protocol requirements; the parsing data part is divided into two parts: the parsing telemetry data part and the parsing acquisition data part. The parsing telemetry data part is to parse the binary telemetry data sent back by the servo system into the physical quantity data corresponding to the communication protocol, and the parsing acquisition data part is to parse the sensor physical quantity collected by the data acquisition module into the nozzle position information; the sending data part is divided into two parts: the sending instruction data part and the sending storage data part. The sending instruction data part is to send the instruction data generated by this test to the instruction receiving and sending module, and the sending storage data part is to send all the key data generated by this test to the data analysis and storage module.

3. The automatic zero return test system for a rocket nozzle according to claim 1, characterized in that: The instruction receiving and sending module is divided into an instruction receiving part and an instruction sending part. The instruction receiving part is used to receive the telemetry data sent back by the servo system and transmit it to the automatic test module and the data analysis and storage module; the instruction sending part is used to send the instruction data generated by the automatic test module to the servo system at a regular interval.

4. The automatic zero return test system for a rocket nozzle according to claim 1, characterized in that: The data acquisition module is divided into the acquisition parameter configuration part and the data acquisition part. The acquisition parameter configuration part can configure the channel of the acquisition board according to the physical channel corresponding to the hardware circuit connection, and can set parameters; The data acquisition part can collect the feedback data of the displacement sensor in real time during the test process and transmit it to the automatic test module and the data analysis and storage module.

5. The automatic zero return test system for a rocket nozzle according to claim 1, characterized in that: The parameter configuration module is divided into the test information configuration part, the test parameter configuration part and the data storage location setting part. The test information configuration part can configure the servo system product information, test equipment information, test environment information, and tester parameters; the test parameter configuration part can configure the test items to be performed, test duration, servo system speed, and test data qualification criteria parameters; the data storage location setting part is for the tester to select the storage location of the test data on the computer before starting the test.

6. The automatic zero return test system for a rocket nozzle according to claim 1, characterized in that: The data analysis and storage module is also used to issue an alarm when data is abnormal, for manual intervention, and save all data as binary files during the test process to facilitate data viewing and analysis.

7. The automatic zero return test system for a rocket nozzle according to claim 1, characterized in that: The data analysis and storage module is divided into a data receiving part, a data interpretation part and a data storage part; the data receiving part is used to receive the servo system telemetry data and the nozzle displacement sensor acquisition data sent by the automatic test module; The data interpretation part completes the qualification judgment of the received data according to the qualification criteria in the parameter configuration module. When the data is abnormal, it will alarm and notify the automated test module; the data storage part saves all the data generated by this test in the form of binary files in real time on the hard disk of the test equipment for later data analysis.

8. An automatic return to zero test method applied to the automatic return to zero test system of a rocket nozzle as claimed in claims 1-7, characterized in that: The following steps are involved: (1) After the automatic zero return starts, the automatic test module loads the configuration parameters and obtains the servo system product information, test data storage location, servo system speed, and test parameters of the data qualification criterion for this zero return test; (2) The automated test module reads the physical signal of the nozzle displacement sensor fed back by the data acquisition module and resolves it into the current position information of the nozzle; at the same time, the automated test module reads the telemetry data sent back by the servo system on the nozzle through the command receiving and sending module, and resolves the nozzle position stored in the servo system from it; (3) Compare the nozzle position fed back by the data acquisition module and the nozzle position fed back by the servo system to see whether they are consistent; (4) If the results of step (3) are inconsistent, the position information fed back by the data acquisition module is used as the basis, and a command is sent to the servo system to update the nozzle position information stored therein; if the results of step (3) are consistent, proceed to the next step; (5) Based on the current position of the nozzle, the automated test module automatically plans the position route for this return to zero; (6) The command receiving and sending module continuously sends the planned position commands to the servo system and receives the telemetry data returned by the servo system; (7) The automated test module reads the feedback data from the data acquisition module in real time and interprets it as the current position of the nozzle; (8) The data analysis and storage module continuously determines whether the servo system current or torque in the telemetry data is overloaded, and if not, continues the zero return process; If overload occurs, an alarm will pop up on the interface of the automatic test module, and the nozzle movement will be stopped immediately. The automatic zero return of the nozzle ends abnormally. After manual inspection and troubleshooting, the zero return operation can be performed again; (9) If the nozzle reaches the zero position, the automatic return to zero is completed normally. If it does not reach the zero position, repeat steps (6) to (8).

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