Further studies on semi-active and active vibration control of mechanical systems

机械系统半主动和主动振动控制的深入研究

• 批准号: 184068-2011
• 负责人: Liu, Kefu
• 金额: $ 1.68万
• 依托单位: Lakehead University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2014
• 资助国家: 加拿大
• 起止时间: 2014-01-01 至 2015-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=545996
• 关键词: Further; studies; semi; active; vibration

In most mechanical systems, vibrations are considered detrimental. Excessive vibration causes part fatigue and machine failure. Uncontrolled vibration results in discomfort in automobiles, trains, and airplanes, etc. Slight vibration makes operation of precision devices such as optical instruments impossible. Vibration control is very important for modern machines. Vibration control methods can be classified as passive, semi-active and active. Passive vibration control is effective if operation conditions remain unchanged. To make vibration control systems adaptable to varying conditions, semi-active or active control must be employed. Over the last six years, the applicant, his graduate students, and collaborators have made a significant progress in semi-active and active vibration control. In particular, two novel vibration isolators were developed and applied to single-degree-of-freedom (SDOF) systems. In order to apply the developed vibration isolators to real mechanical systems, it is imperative to extend the study to multiple-degree-of-freedom (MDOF) systems. For this proposed research program, the applicant intends to accomplish three short-term objectives. (1) Apply the developed tunable HSLDS vibration isolator to MDOF systems. Investigate the dynamic behaviors of the combined systems. Develop effective tuning methods. (2) Apply the developed active vibration isolator to MDOF systems. Investigate the dynamic behaviors of the combined systems. Develop effective control methods. (3) Improve the design of the developed semi-active/active vibration isolators. Develop new vibration control devices. The applicant's long-term objectives are to apply the research results in relevant industries and contribute to the knowledge of vibration control of complex mechanical systems. The outcomes of the proposed study are novel vibration control devices and methodologies that can be directly applied to vibration isolation. The study is driven both by academic interests and industrial needs. Academically, new knowledge and techniques will be gained. Practically, potential applications will be produced. The proposed research will provide excellent opportunities for the training of HQP.

在大多数机械系统中，振动被认为是有害的。过度振动会导致部分疲劳和机器故障。不受控制的振动会导致汽车，火车和飞机等不适。轻微的振动使精确设备（例如光学仪器）的操作不可能。振动控制对于现代机器非常重要。振动控制方法可以归类为被动，半活性和活动性。如果操作条件保持不变，则被动振动控制是有效的。为了使振动控制系统适应各种条件，必须采用半活动或主动控制。在过去的六年中，申请人，他的研究生和合作者在半活动和主动振动控制方面取得了重大进展。特别是，开发了两个新型的振动隔离器并应用于单度自由度（SDOF）系统。为了将开发的振动隔离器应用于实际机械系统，必须将研究扩展到多重自由度（MDOF）系统。对于该建议的研究计划，申请人打算实现三个短期目标。 （1）将开发的可调HSLD振动隔离器应用于MDOF系统。研究组合系统的动态行为。开发有效的调整方法。 （2）将开发的主动振动隔离器应用于MDOF系统。研究组合系统的动态行为。开发有效的控制方法。 （3）改善已发达的半活动/主动振动隔离器的设计。开发新的振动控制设备。申请人的长期目标是将研究结果应用于相关行业，并有助于对复杂机械系统的振动控制知识。拟议研究的结果是可以直接应用于振动隔离的新型振动控制装置和方法。这项研究既由学术利益和工业需求驱动。从学术上讲，将获得新的知识和技术。实际上，将产生潜在的应用。拟议的研究将为培训HQP提供极好的机会。