?電液伺服閥功能:放大微弱電氣信號，轉(zhuǎn)化為大功率液壓能輸出 電液伺服閥組成 電氣部分—力矩馬達(dá)，實(shí)際是一機(jī)械轉(zhuǎn)換器 液壓部分 前置放大級——雙噴嘴擋板閥 功率放大級——零開口四邊滑閥 工作原理 力矩馬達(dá) 功 用：把輸入的電氣信號轉(zhuǎn)變?yōu)榱?，使銜鐵 連同擋板偏轉(zhuǎn)，以控制前置放大級。
組成：一對永久磁體、導(dǎo)磁體、銜鐵、線圈、彈簧管等 工作原理 永久磁體將導(dǎo)磁體磁化為N極和S極 無電流輸入時(shí)：力矩馬達(dá)無輸出，銜鐵中立 有電流輸入時(shí)：銜鐵被磁化，若左端為N極,右端為S極則由同性相斥，異性相吸的原理，銜鐵逆 時(shí)針 方向偏轉(zhuǎn)，同時(shí)彈簧彎管變形,產(chǎn)生反力矩，直到電磁力矩與彈簧彎管反力矩相平衡為止。
電流越大,產(chǎn)生的電磁力矩越大銜 鐵偏轉(zhuǎn)的角度大θ∝I 特 點(diǎn) 銜鐵小，慣性小，靈敏度高 液壓放大級 1 前置放大級 2 功率放大級 前置放大級 功 用——力放大 組成:雙噴嘴擋板閥 油 路 p → 兩固定節(jié)流孔 → 滑閥兩端→ 兩噴嘴→ 兩可變節(jié)流孔→滑閥中部流出 工作原理 力矩馬達(dá)無信號，擋板不動滑閥不動力矩馬達(dá)有信號，銜鐵帶擋板偏轉(zhuǎn),兩可變節(jié)流孔變化，滑閥兩端壓力不等，滑閥移動。
舉 例 如:銜鐵逆時(shí)針方向偏轉(zhuǎn)，擋 板向左偏,可變節(jié)流 孔 ↑，使 p1↑，右↓p2↓，滑閥左移 功率放大級功 用:功率進(jìn)一步放大 組成:零開口四邊滑閥(閥體、閥芯、反饋桿等 工作原理 當(dāng)無電流信號輸入時(shí)，力矩馬達(dá)無力矩輸 出，擋板中立，滑閥兩端壓力相 等，閥心 在反饋桿下端小球作用下也 處于中位。
當(dāng)有電流信號輸入時(shí)，銜鐵帶動擋板逆時(shí)針方向偏轉(zhuǎn)一θ角時(shí)，閥芯因p1p2而向左移動輸出液壓信號閥芯左移，帶動反饋桿下端小球也左移，最終閥芯停止運(yùn)動，取得一個(gè)平衡位置，并輸出相應(yīng)的流量 ∴ 一定的I，對應(yīng)一定 的θ，一定的閥口開度，一定的輸出q。
特 點(diǎn) ∵ 閥芯位置由反饋桿組件彈性 變形力反饋到銜鐵上與電磁力平衡而決定 ∴ 稱力反饋式電液伺服閥 又∵ 采用了兩級液壓放大器 ∴ 稱力反饋兩級電液伺服閥 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。
