摘要
2D数字伺服阀为利用阀芯的双运动自由度原理设计而成导控型阀。阀芯的旋转由步进电机驱动 ;阀芯的轴向运动则由两端阀腔的静压力推动。为了克服传统的步进式数字阀 (离散式比例阀 )所固有的响应速度与量化误差的矛盾 ,步进电机采用特殊的跟踪控制算法 ,实现其输出角位移连续控制。
2D digital servo valve is developed by utilizing both rotary and linear motions of a spool. The rotary motion of the spool is driven by a stepper motor; While the linear motion is actuated by pressure difference of two end spool chamber. In order to sustain the quantative accuracy and dynamic response, a special algorithm is introduced to continually control the angular displacement of the stepper motor. In this paper, we study on the frequency response of 2D digital servo valve.
出处
《机床与液压》
北大核心
2001年第4期11-13,共3页
Machine Tool & Hydraulics
基金
浙江大学流体传动及控制国家重点实验室基金
国家自然科学基金项目 ( 5 0 0 75 0 82 )
