水平轴摆式悬挂转子新型抑振策略研究

A pendular suspended rotator is the combination of a damped pendulum and a rotator. The damped pendulum is excited by the load of the rotator who rotates at a high rotation speed. Due to the pendulum's diversity of motion, this kind of mechanism can exhibit complex dynamic characteristics. A pendular suspended rotator can be usually found as a centrifugal machine employed in industries of textile, printing and dyeing, chemical engineering and household appliances. Because the rotation speed is quite high, the producers have been baffled by its dynamic optimization including vibration reduction and noise suppression for many years. A traditional design of the pendular suspended rotator is the centrifugal mechanism of a washing machine, with the development of technology, many new strategies such as the magneto-rheological damper and passive equlibrium method emergied for vibration supression of the horizontal axis suspended rotators. This project will focus on the working stability and dynamic optimization of the horizontal axis pendular suspended rotator,for doing this, the project will first explore the coupling effect of the two new strategies above, then develop an appropriate semi-active control strategy for the magneto-rheological damper, at last, construct an experimental platform for the horizontal axis pendular suspended rotator, and eventually built general theories and criterions for designing the two new strategies. This project will provide a thorough solution of designning new vibration supression strategies for the horizontal axis pendular suspended rotator,enhance the independent innovation ability of related companies, reinforce the international competition capability of related products and boost the development of related industries.

摆式悬挂转子可看成有阻尼摆与转子的结合。高速旋转的负载构成了阻尼摆的激振源，阻尼摆运动的多样性又决定了系统本身的复杂性。摆式悬挂转子常见于纺织、印染、化工、家电等相关产业中的悬挂类离心机构。由于转子工作转速很高，其动态性能的优化与减振抑噪的核心技术始终是相关厂家面临的难题。摆式悬挂转子的减振抑噪尤以洗衣机脱水机构的设计最为典型。随着技术的进步，磁流变阻尼器与被动平衡技术成为了水平轴摆式悬挂转子新型抑振策略发展趋势。本项目组拟以水平轴摆式悬挂转子工作稳定性与动力学特性的优化为核心研究内容，重点探讨以上两种策略的耦合作用机理及适用于该类转子自身特性的变阻尼悬挂系统半主动控制策略，搭建起新型抑振策略实验平台，建立起该类转子新型抑振策略的设计方法与准则，彻底解决该类转子新型抑振策略设计问题。本项目对提高相关企业自主创新能力，提升相关产品国际竞争力,促进相关行业发展等具有重要的作用和意义。

对摆式悬挂转子新型抑振策略进行了系统的理论分析与实验研究。形成了系统的建立该类转子振动模型的方法，开发了相应的数值计算与仿真分析环境；构建了专门的用于判别该类转子工作稳定性的方法，编写了详细的算法程序；通过转子离心力系平衡关系的分析，对该类转子平衡环抑振机理有了明确的认识；研究了该类转子动力学特性的优化过程，并通过将电机转速控制与磁流变阻尼器电流控制相结合，形成了行之有效的抑制转子瞬态振动与机壳走动的方法；搭建起完整的转子实验平台，设计制作了专用磁流变阻尼器件与球体平衡环机构，开发了专用电机/阻尼器控制单元，研制了用于研究筒体自身振动与机壳耦合动力学特性的不同种类的支架装置。通过深入的理论分析与具体的实验研究，验证了平衡环机构与磁流变阻尼器在摆式悬挂转子中应用的可行性，并对其实际应用过程中所产生的问题与具体的应对措施有了明确的掌握，这为项目成果的转化奠定了基础。

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