电液伺服阀功能:放大微弱电气信号，转化为大功率液压能输出 电液伺服阀组成 电气部分—力矩马达，实际是一机械转换器 液压部分 前置放大级——双喷嘴挡板阀 功率放大级——零开口四边滑阀 工作原理 力矩马达 功 用：把输入的电气信号转变为力矩，使衔铁 连同挡板偏转，以控制前置放大级。
组成：一对永久磁体、导磁体、衔铁、线圈、弹簧管等 工作原理 永久磁体将导磁体磁化为N极和S极 无电流输入时：力矩马达无输出，衔铁中立 有电流输入时：衔铁被磁化，若左端为N极,右端为S极则由同性相斥，异性相吸的原理，衔铁逆 时针 方向偏转，同时弹簧弯管变形,产生反力矩，直到电磁力矩与弹簧弯管反力矩相平衡为止。
电流越大,产生的电磁力矩越大衔 铁偏转的角度大θ∝I 特 点 衔铁小，惯性小，灵敏度高 液压放大级 1 前置放大级 2 功率放大级 前置放大级 功 用——力放大 组成:双喷嘴挡板阀 油 路 p → 两固定节流孔 → 滑阀两端→ 两喷嘴→ 两可变节流孔→滑阀中部流出 工作原理 力矩马达无信号，挡板不动滑阀不动力矩马达有信号，衔铁带挡板偏转,两可变节流孔变化，滑阀两端压力不等，滑阀移动。
举 例 如:衔铁逆时针方向偏转，挡 板向左偏,可变节流 孔 ↑，使 p1↑，右↓p2↓，滑阀左移 功率放大级功 用:功率进一步放大 组成:零开口四边滑阀(阀体、阀芯、反馈杆等 工作原理 当无电流信号输入时，力矩马达无力矩输 出，挡板中立，滑阀两端压力相 等，阀心 在反馈杆下端小球作用下也 处于中位。
当有电流信号输入时，衔铁带动挡板逆时针方向偏转一θ角时，阀芯因p1p2而向左移动输出液压信号阀芯左移，带动反馈杆下端小球也左移，最终阀芯停止运动，取得一个平衡位置，并输出相应的流量 ∴ 一定的I，对应一定 的θ，一定的阀口开度，一定的输出q。
特 点 ∵ 阀芯位置由反馈杆组件弹性 变形力反馈到衔铁上与电磁力平衡而决定 ∴ 称力反馈式电液伺服阀 又∵ 采用了两级液压放大器 ∴ 称力反馈两级电液伺服阀 90-L-100-KA-5-BC-60-L-4-C7-F-03-GBA-35-35-24 90L100KA5BC60L4C7F03GBA353524 90L100-KA-5-BC-60-P-3-C7-E-03-GBA-45-45-24 90L100KA5BC60P3C7E03GBA454524 90-L-100-KA-5-BC-60-P-3-C7-E-03-GBA-45-45-24 90L100KA5BC60P3C7E03GBA454524 90L100-KA-5-BC-60-P-3-F1-E-03-GBA-35-35-20 90L100KA5BC60P3F1E03GBA353520 90-L-100-KA-5-BC-60-P-3-F1-E-03-GBA-35-35-20 90L100KA5BC60P3F1E03GBA353520 90L100-KA-5-BC-60-R-3-C6-E-02-GBA-35-35-24 90L100KA5BC60R3C6E02GBA353524 90-L-100-KA-5-BC-60-R-3-C6-E-02-GBA-35-35-24 90L100KA5BC60R3C6E02GBA353524 90L100-KA-5-BC-60-R-3-C7-E-03-GBA-42-42-24 90L100KA5BC60R3C7E03GBA424224 90-L-100-KA-5-BC-60-R-3-C7-E-03-GBA-42-42-24 90L100KA5BC60R3C7E03GBA424224 90L100-KA-5-BC-60-R-3-C7-E-04-GBA-35-35-24 90L100KA5BC60R3C7E04GBA353524 90-L-100-KA-5-BC-60-R-3-C7-E-04-GBA-35-35-24 90L100KA5BC60R3C7E04GBA353524 90L100-KA-5-BC-60-S-3-C7-E-02-GBA-30-30-24 90L100KA5BC60S3C7E02GBA303024 90-L-100-KA-5-BC-60-S-3-C7-E-02-GBA-30-30-24 90L100KA5BC60S3C7E02GBA303024 90L100-KA-5-BC-60-S-3-C7-E-02-GBA-42-42-30 90L100KA5BC60S3C7E02GBA424230 90-L-100-KA-5-BC-60-S-3-C7-E-02-GBA-42-42-30 90L100KA5BC60S3C7E02GBA424230 90L100-KA-5-BC-60-S-3-C7-E-03-GBA-35-35-24 90L100KA5BC60S3C7E03GBA353524 90-L-100-KA-5-BC-60-S-3-C7-E-03-GBA-35-35-24 90L100KA5BC60S3C7E03GBA353524 90L100-KA-5-BC-60-S-3-C7-E-03-GBA-42-42-24 90L100KA5BC60S3C7E03GBA424224 90-L-100-KA-5-BC-60-S-3-C7-E-03-GBA-42-42-24 90L100KA5BC60S3C7E03GBA424224 90L100-KA-5-BC-60-S-3-C7-F-03-GBA-45-45-24 90L100KA5BC60S3C7F03GBA454524 90-L-100-KA-5-BC-60-S-3-C7-F-03-GBA-45-45-24 90L100KA5BC60S3C7F03GBA454524 90L100-KA-5-BC-60-S-3-C7-F-04-GBA-35-35-24 90L100KA5BC60S3C7F04GBA353524 90-L-100-KA-5-BC-60-S-3-C7-F-04-GBA-35-35-24 90L100KA5BC60S3C7F04GBA353524 90L100-KA-5-BC-60-S-4-C7-E-03-GBA-35-35-20-F023 90L100KA5BC60S4C7E03GBA353520F023 90-L-100-KA-5-BC-60-S-4-C7-E-03-GBA-35-35-20-F023 90L100KA5BC60S4C7E03GBA353520F023 90L100-KA-5-BC-60-S-4-C7-E-03-GBA-42-42-24 90L100KA5BC60S4C7E03GBA424224 90-L-100-KA-5-BC-60-S-4-C7-E-03-GBA-42-42-24 90L100KA5BC60S4C7E03GBA424224 90L100-KA-5-BC-60-S-4-C7-F-03-GBA-35-35-24 90L100KA5BC60S4C7F03GBA353524 90-L-100-KA-5-BC-60-S-4-C7-F-03-GBA-35-35-24 90L100KA5BC60S4C7F03GBA353524 90-L-100-KA-5-BC-80-D-3-F1-L-03-GBA-29-29-24 90L100KA5BC80D3F1L03GBA292924 90-L-100-KA-5-BC-80-D-3-S1-L-03-GBA-29-29-24 90L100KA5BC80D3S1L03GBA292924 90L100-KA-5-BC-80-L-3-F1-F-03-GBA-35-35-24 90L100KA5BC80L3F1F03GBA353524 90-L-100-KA-5-BC-80-L-3-F1-F-03-GBA-35-35-24 90L100KA5BC80L3F1F03GBA353524 90L100-KA-5-BC-80-L-3-F1-F-03-GBA-42-42-24 90L100KA5BC80L3F1F03GBA424224 90-L-100-KA-5-BC-80-L-3-F1-F-03-GBA-42-42-24 90L100KA5BC80L3F1F03GBA424224 90L100-KA-5-BC-80-P-3-C7-E-04-GBA-42-42-24 90L100KA5BC80P3C7E04GBA424224 90-L-100-KA-5-BC-80-P-3-C7-E-04-GBA-42-42-24 90L100KA5BC80P3C7E04GBA424224 90L100-KA-5-BC-80-R-3-C7-E-03-GBA-35-35-24 90L100KA5BC80R3C7E03GBA353524 90-L-100-KA-5-BC-80-R-3-C7-E-03-GBA-35-35-24 90L100KA5BC80R3C7E03GBA353524 90L100-KA-5-BC-80-R-3-S1-E-03-GBA-35-35-24 90L100KA5BC80R3S1E03GBA353524 90-L-100-KA-5-BC-80-R-3-S1-E-03-GBA-35-35-24 90L100KA5BC80R3S1E03GBA353524 90L100-KA-5-BC-80-R-4-C7-F-03-GBA-29-29-24 90L100KA5BC80R4C7F03GBA292924 90-L-100-KA-5-BC-80-R-4-C7-F-03-GBA-29-29-24 90L100KA5BC80R4C7F03GBA292924 90-L-100-KA-5-BC-80-R-4-C7-F-03-GBA-29-29-24-F068 90L100KA5BC80R4C7F03GBA292924F068 90L100-KA-5-BC-80-S-3-C7-E-03-GBA-26-26-24 90L100KA5BC80S3C7E03GBA262624 90-L-100-KA-5-BC-80-S-3-C7-E-03-GBA-26-26-24 90L100KA5BC80S3C7E03GBA262624 90L100-KA-5-BC-80-S-3-C7-E-03-GBA-42-42-24 90L100KA5BC80S3C7E03GBA424224 90-L-100-KA-5-BC-80-S-3-C7-E-03-GBA-42-42-24 90L100KA5BC80S3C7E03GBA424224 90L100-KA-5-BC-80-S-3-C7-E-03-GBA-42-42-30 90L100KA5BC80S3C7E03GBA424230 90-L-100-KA-5-BC-80-S-3-C7-E-03-GBA-42-42-30 90L100KA5BC80S3C7E03GBA424230 90L100-KA-5-BC-80-S-3-C7-F-03-GBA-26-26-24 90L100KA5BC80S3C7F03GBA262624 90-L-100-KA-5-BC-80-S-3-C7-F-03-GBA-26-26-24 90L100KA5BC80S3C7F03GBA262624 90L100-KA-5-BC-80-S-3-C7-F-03-GBA-38-38-24 90L100KA5BC80S3C7F03GBA383824 90-L-100-KA-5-BC-80-S-3-C7-F-03-GBA-38-38-24 90L100KA5BC80S3C7F03GBA383824 90L100-KA-5-BC-80-S-3-C7-F-03-GBA-42-42-28 90L100KA5BC80S3C7F03GBA424228 90-L-100-KA-5-BC-80-S-3-C7-F-03-GBA-42-42-28 90L100KA5BC80S3C7F03GBA424228 90L100-KA-5-BC-80-S-3-S1-E-03-GBA-42-42-24 90L100KA5BC80S3S1E03GBA424224 90-L-100-KA-5-BC-80-S-3-S1-E-03-GBA-42-42-24 90L100KA5BC80S3S1E03GBA424224 90L100-KA-5-BC-80-S-3-S1-F-03-GBA-38-14-24 90L100KA5BC80S3S1F03GBA381424 90-L-100-KA-5-BC-80-S-3-S1-F-03-GBA-38-14-24 90L100KA5BC80S3S1F03GBA381424 90L100-KA-5-BC-80-S-7-S1-E-09-FAC-35-35-30 90L100KA5BC80S7S1E09FAC353530 90-L-100-KA-5-BC-80-S-7-S1-E-09-FAC-35-35-30 90L100KA5BC80S7S1E09FAC353530 90L100-KA-5-CD-60-L-4-C7-F-03-GBA-35-35-24 90L100KA5CD60L4C7F03GBA353524 90-L-100-KA-5-CD-60-L-4-C7-F-03-GBA-35-35-24 90L100KA5CD60L4C7F03GBA353524 90L100-KA-5-CD-60-P-3-C7-F-03-GBA-42-42-24 90L100KA5CD60P3C7F03GBA424224 90-L-100-KA-5-CD-60-P-3-C7-F-03-GBA-42-42-24 90L100KA5CD60P3C7F03GBA424224 90L100-KA-5-CD-60-P-3-C7-F-03-GBA-45-45-24 90L100KA5CD60P3C7F03GBA454524 90-L-100-KA-5-CD-60-P-3-C7-F-03-GBA-45-45-24 90L100KA5CD60P3C7F03GBA454524 90L100-KA-5-CD-60-P-3-F1-E-03-GBA-32-32-20 90L100KA5CD60P3F1E03GBA323220 90-L-100-KA-5-CD-60-P-3-F1-E-03-GBA-32-32-20 90L100KA5CD60P3F1E03GBA323220 90-L-100-KA-5-CD-60-P-3-F1-E-03-GBA-42-42-24 90L100KA5CD60P3F1E03GBA424224 90L100-KA-5-CD-60-R-3-S1-E-03-GBA-42-42-26 90L100KA5CD60R3S1E03GBA424226 90-L-100-KA-5-CD-60-R-3-S1-E-03-GBA-42-42-26 90L100KA5CD60R3S1E03GBA424226 90L100-KA-5-CD-60-S-3-C7-D-03-GBA-29-29-28 90L100KA5CD60S3C7D03GBA292928 90-L-100-KA-5-CD-60-S-3-C7-D-03-GBA-29-29-28 90L100KA5CD60S3C7D03GBA292928 90L100-KA-5-CD-60-S-3-C7-D-03-GBA-45-45-24 90L100KA5CD60S3C7D03GBA454524 90-L-100-KA-5-CD-60-S-3-C7-D-03-GBA-45-45-24 90L100KA5CD60S3C7D03GBA454524 90L100-KA-5-CD-60-S-3-C7-E-03-GBA-42-42-24 90L100KA5CD60S3C7E03GBA424224 90-L-100-KA-5-CD-60-S-3-C7-E-03-GBA-42-42-24 90L100KA5CD60S3C7E03GBA424224 90L100-KA-5-CD-60-S-3-C7-F-03-GBA-42-42-24 90L100KA5CD60S3C7F03GBA424224 90-L-100-KA-5-CD-60-S-3-C7-F-03-GBA-42-42-24 90L100KA5CD60S3C7F03GBA424224 90L100-KA-5-CD-60-S-3-S1-F-04-GBA-35-35-24 90L100KA5CD60S3S1F04GBA353524 90-L-100-KA-5-CD-60-S-3-S1-F-04-GBA-35-35-24 90L100KA5CD60S3S1F04GBA353524 90L100-KA-5-CD-60-S-3-T2-E-00-GBA-23-23-24 90L100KA5CD60S3T2E00GBA232324 90-L-100-KA-5-CD-60-S-3-T2-E-00-GBA-23-23-24 90L100KA5CD60S3T2E00GBA232324 90L100-KA-5-CD-60-S-4-C7-E-03-GBA-42-42-24 90L100KA5CD60S4C7E03GBA424224 90-L-100-KA-5-CD-60-S-4-C7-E-03-GBA-42-42-24 90L100KA5CD60S4C7E03GBA424224 90L100-KA-5-CD-60-S-4-C7-F-03-GBA-35-35-24 90L100KA5CD60S4C7F03GBA353524 90-L-100-KA-5-CD-60-S-4-C7-F-03-GBA-35-35-24 90L100KA5CD60S4C7F03GBA353524 90L100-KA-5-CD-80-L-3-C7-E-03-GBA-38-38-24 90L100KA5CD80L3C7E03GBA383824。
