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引言对许多大型刚性试件进行振动试验,往往采用多致动振动台。当试验装置发生共振时,致动器之间会产生很大的相互作用力,即所谓动态交叉耦合,其结果往往造成振动试验条件不准确,控制不稳定。早期的多致动振动控制系统,组合了普通的单致动装置和特殊的多通道相位控制器,认识到交叉耦合是一个问题,但未予以直接处理。不久前Helmuth和Hunter对正
INTRODUCTION Vibration tests are performed on many large rigid specimens, often using a multi-action vibrating table. When the test device resonates, there will be a great interaction between the actuator, the so-called dynamic cross-coupling, the results often result in inaccurate vibration test conditions, control instability. Early multi-actuation vibration control systems, combining common single-actuation devices and special multi-channel phase controllers, recognized that cross-coupling was a problem that was not directly addressed. Not long ago Helmuth and Hunter alignment