在以往的研究过程中，主要发现电液伺服控制单元在零位时存在振动，左右行程不对称，精度和快速性达不到使用要求的问题。
In the previous studies, Central oscillation, asymmetry of left and right movement and insufficient precise and speed of response are the main problems of electro-hydraulic servo control unit.
电液控制单元是船用舵机电液位置伺服系统关键部件，其性能的优劣直接影响舵机的性能。
Electrohydraulic control unit whose performance has direct effect on rudder's characteristics is the key component of ship rudder position control system.
电液控制单元是船用舵机电液位置伺服系统关键部件，其性能的优劣直接影响舵机的性能。
Electrohydraulic control unit whose performance has direct effect on rudder's characteristics is the key component of ship rudder position control system.
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