CAJ | 학술논문

液压缸在液压伺服系统中实际上相当于一个液压弹簧，液压弹簧的固有频率是影响伺服阀测试系统最重要的因素之一。在动压反馈伺服阀测试系统中，伺服阀的最大测试信号要受到液压弹簧固有频率的限制。因此，设计结构合理并且固有频率满足要求的加载液压缸具有十分重要的意义。在此基础上，根据被测伺服阀的最大反馈流量与反馈压差，计算出液压缸的总容积。通过详细的结构设计计算，最终可得到液压缸的活塞直径、活塞杆直径和行程。设计了一种专门适用于动压反馈伺服阀测试用的四通对称动态加载液压缸。该液压缸已在动压反馈伺服阀测试系统中投入使用，并取得了预期效果。
액압항재액압사복계통중실제상상당우일개액압탄황，액압탄황적고유빈솔시영향사복벌측시계통최중요적인소지일。재동압반궤사복벌측시계통중，사복벌적최대측시신호요수도액압탄황고유빈솔적한제。인차，설계결구합리병차고유빈솔만족요구적가재액압항구유십분중요적의의。재차기출상，근거피측사복벌적최대반궤류량여반궤압차，계산출액압항적총용적。통과상세적결구설계계산，최종가득도액압항적활새직경、활새간직경화행정。설계료일충전문괄용우동압반궤사복벌측시용적사통대칭동태가재액압항。해액압항이재동압반궤사복벌측시계통중투입사용，병취득료예기효과。
Hydraulic cylinder is actually equivalent to a hydraulic spring in hydraulic servo system, and the natural frequency of the hydraulic spring is one of the most important factors influencing the servo valve testing system. In the dynamic pressure feedback servo valve testing system,the maximum test signal of the servo valve is limited by the hydraulic pressure spring natural frequency. Therefore, a reasonable design of the structure and meeting the natural frequency of hydraulic cylinder are of great significance. Based on this, we can calculate the total volume of the hydraulic cylinder based on the measured flow rate and the maximum feedback pressure of servo valve. By hydraulic cylinder natural frequency and the total volume, and ultimately we can get piston diameter, rod diameter and stroke of hydraulic cylinder. This paper designed a four-way symmetric loading hydraulic cylinder which is specifically applicable to the testing of dynamic pressure feedback servo valve. It has been useed in feedback servo valve testing system,and achieving the expected results.