0.6m连续式跨声速风洞总压控制策略设计

发布时间：2018-01-02 00:05

本文关键词：0.6m连续式跨声速风洞总压控制策略设计　出处：《实验流体力学》2016年04期 　论文类型：期刊论文

【摘要】：总压作为连续式风洞控制系统关键指标之一,其控制精度及快速性对提高风洞试验效率、降低能耗具有重要意义。0.6m风洞为国内首座具备负压试验能力的连续式跨声速风洞,其试验工况多,压力范围广,针对该风洞压力特性,设计了总压控制策略,根据不同的压力工况确定不同的阀门组合控制方式;同时针对模糊PID对连续式跨声速风洞宽压力范围、多调节工况下压力控制适应性较差的问题,提出分段变参数加模糊PID相结合的控制算法,即先根据目标总压确定不同分段区间下基本合理的基准P、I参数,再结合模糊控制算法对基准参数进行修正。风洞调试结果表明,总压控制精度优于0.1%,控制策略能够有效满足不同工况的控制要求。
[Abstract]:As one of the key indexes of continuous wind tunnel control system, the control accuracy and rapidity of total pressure can improve the efficiency of wind tunnel test. Reducing energy consumption is of great significance .0.6m wind tunnel is the first continuous transonic wind tunnel with negative pressure test capability. It has many test conditions and a wide range of pressure, aiming at the pressure characteristics of the wind tunnel. The total pressure control strategy is designed and different valve combination control methods are determined according to different pressure conditions. At the same time, aiming at the problem of poor adaptability of fuzzy PID to the pressure control of continuous transonic wind tunnel with wide pressure range and multi-regulation conditions, a new control algorithm is proposed, which combines piecewise variable parameters with fuzzy PID. That is to say, according to the total pressure of the target, the basic reasonable parameters of the benchmark Pfie are determined under different segmental intervals, and then the reference parameters are modified with the fuzzy control algorithm. The results of wind tunnel debugging show that. The precision of total pressure control is better than 0.1, and the control strategy can effectively meet the control requirements of different working conditions.
【作者单位】：中国空气动力研究与发展中心;
【分类号】：V211.74
【正文快照】： 0引言0.6m×0.6m连续式跨声速风洞(以下简称0.6m风洞)为国内首座具备负压实验能力的连续式跨声速风洞,试验马赫数范围为0.2~1.6,压力范围为20~250kPa(绝对压力),具有3个试验段,该风洞通过阀门控制系统实现常压、增压和降压运行,其中增压、常压运行通过调节进排气系统实现,降压

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