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1. 发明授权

US4947732A Electro-hydraulic servo actuator with function for adjusting rigidity 失效
标题翻译：电液伺服执行机构具有调整刚度功能
公开(公告)号：US4947732A
公开(公告)日：1990-08-14
申请号：US283309
申请日：1988-12-12
申请人： Ako Hidenobu
发明人： Ako Hidenobu
IPC分类号： B25J13/08 , B25J19/00 , F15B9/03 , F15B9/09
CPC分类号： F15B9/03
摘要： An electro-hydraulic servo actuator with function for adjusting rigidity. The electro-hydraulic servo actuator comprises an electro-hydraulic transducer which transduces an electric signal into a hydraulic signal, an actuator of a cylinder type which is operated by the electro-hydraulic transducer, and a position detector which detects a position of an output member of the actuator to emit a positional electric signal. The hydraulic-element transducer is a bias piston which is disposed within a actuator rod of the cylinder type actuator and which floats in response to a differential pressure within the cylinder, and the piston is connected to the position detector. The electro-hydraulic servo actuator further comprises an adder which compares the positional signal from the position detector with a command signal to emit a deviation signal, the deviation signal from the adder being applied to the electro-hydraulic transducer, and a hydraulic-electric transducer which detects hydraulic pressure in the actuator and which applies a signal corresponding to the hydraulic pressure to a portion between the detector and the adder to transduce into an electric signal.
摘要翻译：具有调整刚度功能的电液伺服驱动器。电液伺服致动器包括将电信号转换为液压信号的电动液压换能器，由电动液压换能器操作的气缸型致动器，以及检测输出构件的位置的位置检测器以发出位置电信号。液压元件换能器是偏置活塞，其设置在气缸型致动器的致动器杆内，并且响应于气缸内的压差而浮动，并且活塞连接到位置检测器。电动液压伺服致动器还包括加法器，该加法器将来自位置检测器的位置信号与发出偏差信号的指令信号进行比较，加法器的偏差信号被施加到电动液压换能器，液压换能器其检测致动器中的液压并且将与液压相对应的信号施加到检测器和加法器之间的部分以转换成电信号。

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