Multichannel data collection method for pneumatic heating simulated test system

Abstract

The invention discloses a multichannel data collection method for a pneumatic heating simulated test system, and solves the problem in multichannel data collection of the pneumatic heating simulated test system. An OPC data communication method based on the Window NT technology standard is provided to collect data of more than one hundred of channels rapidly. A PLC measures the thermal state of the test piece in fixed time interval, and displays the measured data to the external via an OPC, a host computer tests a variable needed by the system via OPC scanning, a control quantity is calculated via a control feedback quantity obtained by scanning and a control low, and a value is assigned to the PLC via the OPC. According to the method, it is not required to develop communication driving program in the bottom layer, real-time data interaction between the host computer and the PLC can be realized via simple function codes after that PLC communication is configured, and multichannel data collection can be realized rapidly.

Description

Technical field [0001] A multi-channel data acquisition method for pneumatic heating simulation test system. Background technique [0002] The aerodynamic heating simulation test is a ground simulation technology that simulates the aerodynamic thermal problems caused by the high-speed airflow during the flight of the aircraft. Based on the calculation results of aerodynamic heat, it uses the heating process of the control aerodynamic heating simulation test system to simulate the equivalent thermal environment and aerodynamic load of the aircraft in space, provides guidance for structural strength design analysis, and provides a basis for product development, which is helpful To speed up the model development progress, improve product quality, reduce development costs, and shorten test cycles. Quartz lamp infrared heat radiation heating is a common way to provide heat source for pneumatic heating simulation test. [0003] Quartz lamp infrared heat radiation pneumatic heating simu...

AI Technical Summary

Problems solved by technology

These communication modes based on the TCP / IP protocol make it impossible for the upper computer to obtain status feedback data in real time. At the same time, the communication needs to occupy time, so that the control cycle cannot be too short, which affects the control accuracy, and the underlying communication driver is complicated to write.

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