Research on Key Technologies of a Temperature-Humidity-Vibration-Low Pressure Four-Pronged Test System

Abstract

Objective To address the difficulty of traditional environmental test equipment in simulating the multi-stress coupling effects of equipment in service, this paper investigates a domestically produced temperature-humidity-vibration-low-pressure integrated test system. The aim is to analyze its system structure and key technical bottlenecks, propose innovative solutions, and promote the independent research and development of environmental test systems in my country. Methods Focusing on the structural configuration and functional indicators of the integrated test system, a technical analysis was conducted from the perspectives of sealing and vibration compatibility design, pressure balance and automatic centering control, lightweight box structure optimization, and temperature and humidity regulation technology under low pressure conditions. The system was specifically validated and evaluated for its two-stage rolling seal structure, pressure self-balancing centering mechanism, stress-equalizing rib design, and efficient heat and humidity control. Results The system operates stably under a thrust of 65 kN and a vacuum of ≤0.1 kPa. The leak rate of the sealing structure is less than 1×10^-2Pa·m³/s, the axial automatic centering accuracy of the vibration table reaches 0.05 mm, the box weight is reduced by over 30%, and the response speed and uniformity of temperature and humidity control are significantly improved. The system meets the complex service environment simulation requirements of high-end equipment such as inertial navigation components, optoelectronic systems, and missile control modules. Conclusion The domestically produced four-in-one test system has achieved technological breakthroughs in system coupling capability, key component integration and environmental simulation accuracy. It has good engineering application prospects and promotion value, and is of great significance to promoting the high-end and independent development of my country's environmental test equipment.