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中文摘要：
在宽频范围内对发动机振动进行积极隔振研究,对提高运载器性能具有重要意义。在分析发动机隔振动力学模型基础上,提出用可调刚度的磁流变弹性元件和可调阻尼的磁流变阻尼器件构成磁流变悬置,以减小发动机对基座的垂向传递力为目标,设计出用仿人思想修改参数的发动机垂直隔振模糊控制器,在不同激励频率下,对发动机隔振进行了仿真试验。结果表明,相对于被动的橡胶悬置和液压悬置隔振,基于磁流变悬置的发动机模糊控制隔振具有明显的优势,能在宽频范围内把力传递率控制在10%以内,并降低了机体的振动。
英文摘要：
Research on engine active isolation effectively in whole frequency region is very important to enhance the performance of carry equipment. Based on necessary analysis on engine isolation dynamic model, a magnetorheological （MR） mount made up of a variable stiffness MR elastomer and a variable damping MR damper was proposed. To decrease vertical vibration force transmitted from engine to basis, a fuzzy controller with human-simulation intelligent parameter modifying algorithm was designed, which can online adjust its quantization factors and scale factor. Thus, the simulation tests of engine isolation system with different excitation frequency were carried out in MATLAB. It indicates that the fuzzy control of engine isolation based on MR mount has distinct advantages compared with passive rubber mount or hydraulic mount. It reduces transfer force to less than 10 percents and restrains engine body vibration in wider frequency region.
同期刊论文项目
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A Comparison of Suitable Control Methods for Full Vehicle with Four MR Dampers Part II Controller Sy
Neural network compensation of semi-active control for magneto-rheological suspension with time dela
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Analysis and Verification on the Chain-like Model with Normal Distribution of Magnetorheological Ela
Adaptive Sliding Mode Fault-Tolerant Control for Semi-Active Suspension Using Magnetorheological Dam
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