滚动活塞式压缩机转子精准启停控制方法  

Precise Start Stop Control Method for Rolling Piston Compressor Rotor

作　　者：曹源 CAO Yuan(Hualu Engineering Technology Co.,Ltd.,Xi’an 710065,China)

机构地区：[1]华陆工程科技有限责任公司,陕西西安710065

出　　处：《机械与电子》2025年第4期45-51,共7页Machinery & Electronics

基　　金：陕西省科技厅工业攻关项目资助(2023K10-21)。

摘　　要：针对滚动活塞式压缩机存在的温度分布不均、应力集中及振动加剧等问题,提出了基于转子传热方程以及影响因素分析的启停精准控制方法。设定转子工作的额定条件,求得缸内温度与转子温度分布在同一条刻度线上的传热方程,给出传热边界条件。采用线性分析算法计算转子的热应力场数值,利用计算得到的热应力场数据,结合压缩机转子的机械特性,计算了连续运行负荷,并依靠负荷设置了内缸压力的稳定工作条件,以此作为启停控制的判定依据。基于压缩机转子工作结构的详细模型,计算转子振动的微分方程,并将压力变化转化为阻尼力,得到启停的瞬时激励响应幅值,结合启停控制的判定依据,通过函数方程求解最佳控制因子,从而找到最佳的控制因子,结合模糊逻辑和滑模控制,以最小化振动幅度,提高启停控制的精度和平稳性。实验结果表明,所提方法降低了振幅的波动,有效抑制了压缩机转子的振动情况,避免了负荷峰值,稳定了压缩机负荷的整体走向。Aiming at the problems of uneven temperature distribution,stress concentration and vibration intensification in rolling piston compressors,an accurate control method based on rotor heat transfer equation and analysis of influencing factors is proposed.The rated conditions for the rotor’s operation are set,and the heat transfer equation with the temperature distribution in the cylinder and the rotor on the same scale line is obtained,and the heat transfer boundary conditions are given.The linear analysis algorithm is used to calculate the numerical value of the thermal stress field of the rotor,and the calculated thermal stress field data is used to calculate the continuous operating load in combination with the mechanical characteristics of the compressor rotor,and the stable working conditions of the inner cylinder pressure are set based on the load,which is used as the basis for judging the start-stop control.Based on the detailed model of the working structure of the compressor rotor,the differential equation of the rotor vibration is calculated,and the pressure change is converted into damping force to obtain the instantaneous excitation response amplitude of the start-stop.Combined with the judgment basis of the start-stop control,the best control factor is solved through the functional equation,so as to find the best control factor.Combined with fuzzy logic and sliding mode control,to minimize the vibration amplitude and improve the accuracy and stability of the start-stop control.The experimental results show that the proposed method reduces the amplitude fluctuation,effectively inhibits the vibration of the compressor rotor,avoids the load peak,and stabilizes the overall direction of the compressor load.

关 键 词：滚动活塞式压缩机 转子机械化 启停控制 热力场数值 转子振动微分方程 

分 类 号：TN188[电子电信—物理电子学]