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首页> 外文期刊>Journal of vibration and control: JVC >MIMOMH feed-forward adaptive vibration control of helicopter fuselage by using piezoelectric stack actuators
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MIMOMH feed-forward adaptive vibration control of helicopter fuselage by using piezoelectric stack actuators

机译：用压电堆致动器使用压电堆机机身的MimomH馈电自适应振动控制

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摘要

The vibration of a helicopter fuselage is mainly produced by the rotor exciting loads which are three forces and three moments containing harmonics in three directions at rotor hub center, and has the characteristic of large, steady and harmonic vibration. The active control of helicopter fuselage vibration by using inertia actuator needs to pay a heavy weight cost for achieving a good control effect. In this paper, a method for multi-input multi-output multi-harmonic (MIMOMH) feed-forward adaptive control of helicopter fuselage vibration by using piezoelectric stack actuators is presented. The method is composed of the harmonic coefficients identification and the MIMOMH feed-forward adaptive filtering algorithm, and has excellent characteristics such as light weight, fast response, wide working frequency range, adaptive ability and high effect. The numerical simulations for a frame structure scaled by the Z11 helicopter fuselage floor with four actuating inputs, four vibration outputs, three rotor exciting loads and the first three harmonic frequencies contained in each exciting load were performed, indicating that the vibration levels at objective points are reduced by 99% by using the method and are much lower than the results by only controlling the first harmonic frequency. When the phases, amplitudes and frequencies of exciting loads are changed, the method demonstrates an excellent adaptability to control vibration.
机译：直升机机身的振动主要由转子励磁载荷产生，这些升级负载是三个力和在转子毂中心的三个方向上含有谐波的三个力矩，并且具有大，稳态和谐振的特性。使用惯性执行器的直升机机身振动的主动控制需要支付重量的重量成本，以实现良好的控制效果。本文介绍了一种通过使用压电堆致动器的多输入多输出多谐波（MIMOMH）前谐波（MIMOMH）前辐射自适应控制的方法。该方法由谐波系数识别和MIMOMH前馈自适应滤波算法组成，具有优异的特性，例如重量轻，快速响应，工作频率范围，自适应能力和高效果。由Z11直升机机身底板缩放的框架结构的数值模拟，具有四个致动输入，四个振动输出，三个转子励磁负载和每个激励负载中包含的前三个谐波频率，表明客观点处的振动水平是使用该方法减少99％，并且通过仅通过控制第一谐波频率远低于结果。当改变励磁负载的相位，幅度和频率时，该方法表明了对控制振动的优异适应性。

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