High-speed rotating combustion test system for base bleed unit

Abstract

The invention discloses a high-speed rotating combustion test-bed measurement and control system for a base bleed unit. The high-speed rotating combustion test system comprises a high-speed rotating test-bed, a rotating speed measurement and control system, a data collection system and an ignition control system, wherein the high-speed rotating test-bed is connected with the rotating speed measurement and control system, the data collection system and the ignition control system; the rotating speed measurement and control system is used for measuring rotating speed of the base bleed unit on the high-speed rotating test-bed; the data collection system is used for collecting temperature, thrust and pressure of the base bleed unit; the ignition control system is used for igniting the base bleed unit. According to the system, ignition control can be performed on the base bleed unit, parameters such as temperature, pressure, thrust and the like of the base bleed unit are collected, displayed and recorded in real time, and closed-loop control is performed on the rotating speed of the base bleed unit. Almost the overall process of the base bleed combustion experiment is covered, and the system is suitable for multiple models of base bleed units; a rotating speed control method adopts fuzzy PI closed-loop control, and the control precision of the rotating speed is improved.

Description

technical field [0001] The invention belongs to the field of measurement and control of high-speed turntables, and in particular relates to a measurement and control system of a high-speed rotary test bench for bottom row devices. Background technique [0002] Bottom row extended range technology is an advanced technology that can greatly increase the range of shells. This technology extends the range of the shell by exhausting the bottom of the shell. Compared with other range-extending technologies, it has the advantages of high range-extending efficiency, short flight time and simple structure. The bottom row of devices performs passive high-speed rotational movement together with the shells. Therefore, it is particularly important to study the working performance (thrust, pressure, nozzle ablation, etc.) of the bottom row device under high-speed rotation. The high-speed rotary test bench of the bottom row device drives the bottom row device to rotate at high speed thro...

AI Technical Summary

Problems solved by technology

The design of the speed control system generally adopts the traditional PI regulator, which has a relatively simple structure and high sensitivity, but it has obvious shortcomings in eliminating static errors and suppressing interference.

At the same time, with the violent combustion of the bottom row of powder and the constant change of the rotational speed, the nonlinear and time-varying nature of the rotational inertia of the rotating shaft is caused, so the controlled object has a strong nonlinear and time-varying nature, which leads to a fixed PI parameter It cannot always meet the speed control accuracy requirements of the turntable system

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