伺服控制閥

伺服控制閥輸入信號(電量、機械量)多為偏差信號(輸入信號與反饋信號的差值),閥的輸出量(壓力、流量)也按照其輸入量連續(xù)、成比例地進行控制的閥。這類閥的工作性能類似于比例控制閥,但具有較高的動態(tài)瞬應和靜態(tài)性能,多用于要求較高的、響應快的閉環(huán)液壓控制系統。

大型鋼廠現場采用的主要伺服閥如:伺服閥，

1、基本結構：

主閥體（閥芯/閥套）、先導閥（伺服射流管）、電氣控制盒（放大版）

2、工作原理

伺服射流管先導級

射流管先導級主要由力矩馬達、射流管和接收器組成。

當線圈中有電流通過時,產生的電磁力使射流管噴嘴偏離零位,管內的大部分液流集中射向一側的接收器,而另一側接收 器所得到的流量減少,由此造成兩接收器的壓力變化。主閥閥芯因此壓差而產生位移。

先導級的泄漏油通過噴嘴環(huán)形區(qū)域處的排出通道直接回油箱。

液壓伺服控制系統

以伺服控制元件完成動力與運動方向控制，綜合壓力、流量、方向控制為一體，利用偏差控制進行糾偏，以滿足精度控制需要，必須為閉環(huán)控制，可實現較高頻率( 100HZ以上) ,有滑閥式、噴嘴擋板式、射流管式等，常采用機械伺服、電液伺服、氣液伺服。

液壓伺服系統的特點如下:

(1)反饋。把輸出量的一部分或全部按一定方式回送到輸入端，并和輸入信號進行比較，這就是反饋。在上例中，反饋(檢測時速裝置輸出)電壓和給定(輸入信號)電壓是異號的，即反饋信號不斷地抵消輸入信號，這是負反饋。自動控制系統大多數是負反饋。

(2)偏差。要使液壓缸輸出一定的力和速度，伺服閥必須有一定的開口量，因此輸入和輸出之間必須有偏差信號。液壓缸運動的結果又力圖消除這個誤差。但在伺服系統工作的任何時刻都不能完全消除這一-偏差，伺服系統正是依靠這一-偏差信號進行工作的。

(3)放大。執(zhí)行元件(液壓缸)輸出的力和功率遠遠大于輸入信號的力和功率，其輸出的能量是液壓能源供給的。

(4)跟進。液壓缸的輸出量完全跟進輸入信號的變化。

電液比例閥是比例控制系統中的主要功率放大元件,按輸入電信號指令連續(xù)地成比例地控制液壓系統的壓辦流量等參數。與伺 服控制系統中的伺服閥相比,在某些方面還有一-定的性能差距(主要性能比較如表1所示),但它顯著的優(yōu)點是抗污染能力強,大大地減少了由污染而造成的工作故障,提高了液壓系統的工作穩(wěn)定性和可靠性。另一方面比例閥的成本比伺服閥低，結構也簡單,已在許多場合獲得廣泛應用。

型號 2WRCE…/P and 3WRCE…/P 

高頻響方向閥（塊狀安裝），先導式，帶集成電控器（OBE）和電位反饋

規(guī)格32至50

元件系列2X

安裝尺寸按照DIN ISO 7368 (2WRCE型)

適合位置、速度和壓力的閉環(huán)控制

通過比例閥控制

結構緊固

通過感應位置監(jiān)測器對控制閥芯進行位置感應

規(guī)格63和80，請詢問本公司

力士樂REXROTH三位三通方向高響應閥，先導操作，電感位置傳感器3WRCBH

0811402509 3WRCBH25V190M-1X/M-127NG25Q190L&

0811402511 3WRCBH25V190M-1X/M

0811402512 3WRCBH25V65M-1X/M

0811402519 3WRCBH25V65M-1X/M-127

0811402522 3WRCBH25VF190M-1X/M

0811402514 3WRCBH25VF190M-1X/ZM

0811402510 3WRCBH25VF190M-1X/ZM-127

0811402513 3WRCBH25VF65M-1X/ZM

0811402611 3WRCBH32V380M-1X/M

0811402608 3WRCBH32V380M-1X/M-127

0811402702 3WRCBH32V380M-1X/M-128

R901403244 3WRCBH32V380M-1X/M-128=KM

R901403242 3WRCBH32V380M-1X/M=KM

0811402610 3WRCBH32VF380M-1X/M

0811402609 3WRCBH32VF380M-1X/M-127

0811402644 3WRCBH50V750M-1X/M

0811402643 3WRCBH50V750M-1X/M-127

0811402640 3WRCBH50VF300M-1X/ZM

0811402638 3WRCBH50VF300M-1X/ZM-127

0811402646 3WRCBH50VF750M-1X/M

0811402639 3WRCBH50VF750M-1X/ZM

0811402637 3WRCBH50VF750M-1X/ZM-127

0811402680 3WRCBH80VF1800M-1X/ZM-127

力士樂REXROTH三位三通高響應方向閥（插裝閥）與集成控制電子3WRCBEE

R901174489 3WRCBEE25VF190M-1X/G24K31/A1M

R901286710 3WRCBEE25VF190M-1X/G24K31/A1M-142

R901174491 3WRCBEE25VF190M-1X/G24K31/F1M

R901286705 3WRCBEE25VF190M-1X/G24K31/F1M-142

R901174492 3WRCBEE32VF380M-1X/G24K31/A1M

R901P74492 3WRCBEE32VF380M-1X/G24K31/A1M_PT

R901208054 3WRCBEE32VF380M-1X/G24K31/A1V

R901174494 3WRCBEE32VF380M-1X/G24K31/F1M

R901174495 3WRCBEE50V750M-1X/G24K31/A1M

R901174497 3WRCBEE50V750M-1X/G24K31/F1M

力士樂REXROTH二通高響應插裝閥2WRCE...-2X/P

R901042924 2WRCE32S185R-2X/PG24K31/A1M

R901231773 2WRCE32S185R-2X/PG24K31/A1M-129

R901251113 2WRCE32S185R-2X/PG24K31/A1WK15M

R901040987 2WRCE32S480R-2X/PG24K31/A1M

R901069194 2WRCE32S480R-2X/PG24K31/A1M-108

R901115518 2WRCE32S480R-2X/PG24K31/A1M-121

R901159525 2WRCE32S480R-2X/PG24K31/A1M-129

R901163523 2WRCE32S480R-2X/PG24K31/A1M-130

R901048952 2WRCE32S480R-2X/PG24K31/A1M-95

R901198942 2WRCE32S480R-2X/PG24K31/A1WK15M

R901068836 2WRCE32S480R-2X/PG24K31/C1M

R901314011 2WRCE32S480R-2X/PG24K31/C1V

R901196542 2WRCE32S480R-2X/PG24K31/C1WL15M

R901377142 2WRCE32S600P-2X/PG24K31/A1M-124

R901027188 2WRCE32S650L-2X/PG24K31/A1M-88

R901036037 2WRCE32S650L-2X/PG24K31/A1M-91

R901059018 2WRCE32S650L-2X/PG24K31/A1M-94

R901048950 2WRCE32S650L-2X/PG24K31/A1M-95

R901401801 2WRCE32S650L-2X/PG24K31/A1WK15M

R900743275 2WRCE32S650L-2X/PG24K31/A1WK15M-64

R901169814 2WRCE32S650L-2X/PG24K31/A1WL15M

R901174378 2WRCE32S650L-2X/PG24K31/C1M-74

R901402694 2WRCE32S650L-2X/PG24K31/C1WK15V

R901347152 2WRCE32S650L-2X/PG24K31/C1WL15M

R901044003 2WRCE40S1000L-2X/PG24K31/A1M-94

R901048948 2WRCE40S1000L-2X/PG24K31/A1M-95

R900729097 2WRCE40S1000L-2X/PG24K31/A1V-64

R901045227 2WRCE40S1000L-2X/PG24K31/A1WK15M

R901316592 2WRCE40S1000L-2X/PG24K31/C1M

R901402677 2WRCE40S1000L-2X/PG24K31/C1WK15V

R901347155 2WRCE40S1000L-2X/PG24K31/C1WL15M

R901115520 2WRCE40S700R-2X/PG24K31/A1M-121

R901206725 2WRCE40S700R-2X/PG24K31/A1M-124

R901154917 2WRCE40S700R-2X/PG24K31/A1M-129

R901033120 2WRCE40S700R-2X/PG24K31/A1M-64

R901048944 2WRCE40S700R-2X/PG24K31/A1M-95

R901231424 2WRCE40S700R-2X/PG24K31/A1WK15M

R901199043 2WRCE40S700R-2X/PG24K31/A1WK15M-107

R901096639 2WRCE40S700R-2X/PG24K31/A1WL15M

R901417204 2WRCE40S700R-2X/PG24K31/C1M

R901377143 2WRCE40S900P-2X/PG24K31/A1M-124

R900740694 2WRCE40S900P-2X/PG24K31/A1V

R901064878 2WRCE50S1100R-2X/PG24K31/A1M

R901383637 2WRCE50S1100R-2X/PG24K31/A1M-124

R901106766 2WRCE50S1100R-2X/PG24K31/A1M-94

R901065658 2WRCE50S1100R-2X/PG24K31/A1M-95

R900740695 2WRCE50S1100R-2X/PG24K31/A1V

R901190784 2WRCE50S1100R-2X/PG24K31/A1WK15M

R901230256 2WRCE50S1100R-2X/PG24K31/A1WK15M-107

R901320787 2WRCE50S1100R-2X/PG24K31/A1WL15M

R901090031 2WRCE50S1100R-2X/PG24K31/C1M

R901308536 2WRCE50S1100R-2X/PG24K31/C1M-124

R901108053 2WRCE50S1100R-2X/PG24K31/C1M-94

R901196540 2WRCE50S1100R-2X/PG24K31/C1WL15M

R901351913 2WRCE50S1450P-2X/PG24K31/A1M-124

R901192854 2WRCE50S1600L-2X/PG24K31/A1M-124

R901116643 2WRCE50S1600L-2X/PG24K31/A1M-94

R901262116 2WRCE50S1600L-2X/PG24K31/A1WK15M

R901406242 2WRCE50S1600L-2X/PG24K31/A1WK15M-107

R901419913 2WRCE50S1600L-2X/PG24K31/A1WK15M-124

R901230127 2WRCE50S1600L-2X/PG24K31/A1WL15M

R901086082 2WRCE50S1600L-2X/PG24K31/C1M

R901347156 2WRCE50S1600L-2X/PG24K31/C1WL15M

R901015735 2WRCE50S1960L-2X/PG24K31/C1M-71

力士樂REXROTH三通高速響應插裝閥3WRCE...-2X/P

R901061386 3WRCE40V000P-2X/PG24K31/A1M-110

R900740693 3WRCE40V460L-2X/PG24K31/A1V

R901046778 3WRCE50E620P-2X/PG24K31/A1M-77

R901390429 3WRCE50E620P-2X/PG24K31/A1WL15V

R901169342 3WRCE50V000P-2X/PG24K31/A1M-135

R901176088 3WRCE50V000X-2X/PG24K31/A1M-136

R901186238 3WRCE50V000X-2X/PG24K31/A1M-137

R901044002 3WRCE50V720L-2X/PG24K31/A1M-94

R901190789 3WRCE50V720L-2X/PG24K31/A1WK15M

R901025109 3WRCE50V720L-2X/PG24K31/A1WK15V

R901061996 3WRCE50V720L-2X/PG24K31/C1M

力士樂REXROTH二通高響應插裝閥2WRC(E)...-1X/S

R900563219 2WRC100D001-1X/E/M-8

R900529821 2WRC100K001-1X/E/M-2

R900559435 2WRC100K001-1X/P/M

R900901244 2WRC100K001-1X/P/M-25

R900956670 2WRC100K001-1X/S/M-12

R900571446 2WRC125D001-1X/P/M-3

R900927785 2WRC125K001-1X/E/M-2

R901420262 2WRC125K001-1X/E/V

R900553382 2WRC125K001-1X/P/M-3

R901214423 2WRC125K001-1X/S/M-54

R901214425 2WRC160K001-1X/S/M-54

R900935586 2WRC32D001-1X/S/M

R900578754 2WRC32K001-1X/E/M

R900944289 2WRC32K001-1X/E/M-2

R900537641 2WRC32K001-1X/P/M-5

R900519861 2WRC32K001-1X/S/M

R900928730 2WRC32S001-1X/S/M

R900529857 2WRC40D001-1X/S/M

R900578753 2WRC40K001-1X/E/M

R900941858 2WRC40K001-1X/E/M-2

R900577454 2WRC40K001-1X/S/M

R900554860 2WRC40K001-1X/S/M-7

R900546948 2WRC40K002-1X/S/M-7

R900905032 2WRC40S001-1X/S/M

R900929767 2WRC50D001-1X/S/M

R900957434 2WRC50K001-1X/E/M

R900918126 2WRC50K001-1X/E/M-2

R900529238 2WRC50K001-1X/S/M

R900728014 2WRC50K001-1X/S/M-65

R900560651 2WRC50K002-1X/S/M-7

R900249343 2WRC50S001-1X/S/M

R900935587 2WRC63D001-1X/S/M-38

R901043901 2WRC63D001-1X/S/M-92

R900552261 2WRC63K001-1X/E/M-2

R900552505 2WRC63K001-1X/S/M-16

R900563220 2WRC80D001-1X/E/M-8

R901043903 2WRC80D001-1X/S/M-93

R900547090 2WRC80K001-1X/E/M-2

R901232770 2WRC80S001-1X/S/M

R901100800 2WRCE100D001-1X/SG24/LM-116

R900962180 2WRCE100D001-1X/SG24/LM-37

R901182306 2WRCE100D001-1X/SG24/LM-53

R900786565 2WRCE100D001-1X/SG24/LM-59

R901083245 2WRCE100D001-1X/SG24/LM-83

R900965652 2WRCE100D001-1X/SG24/M-53

R900708807 2WRCE100D001-1X/SG24/M-56

R901037795 2WRCE100D001-1X/SG24/M-59