【摘要】 介绍液压软管脉冲试验的发展历史与国内外现状.研究液压脉冲的4种产生方式,对不同液压脉冲产生方式的优缺点进行对比分析.讨论液压脉冲试验的难点,主要包括数学模型的建立及控制策略的选用、油液温度的精确控制、系统的节能设计、软管曲挠机构的设计等.针对这些难点提出相应的对策,包括采用可以适应负载变化的先进控制策略、串级温度控制系统与模糊控制结合、合理利用脉冲压力下降阶段的能量等.说明了液压脉冲试验的未来方向是朝着耐高温及高压方向发展.更多还原

【Abstract】 The development of impulse test of hydraulic hose was introduced.Current application and research situation of impulse test of hydraulic hose was stated.Four methods to generate hydraulic impulse were discussed,and the advantages and disadvantages of the methods were pointed.The difficulties of hydraulic impulse test were analyzed in detail,including the establishment of the system model,the selection of control strategy,the precise control of test temperature,energy-saving design of the system,and the design of apparatus for flexing test of hydraulic hose.Solutions for these difficulties were proposed,including adoption of advanced control strategies which can adapt to changes in load,combination of cascaded temperature control system and fuzzy control,rational use of the energy derived from pressure-drop-stage. The development prospect of hydraulic impulse test was given,which can bear higher temperature and higher pressure.更多还原