電渦流（liú）測（cè）功機（jī）主要加載範疇（chóu）

　　電渦流測功機是目前（qián）國內先（xiān）進的加載測功設備，主要用來（lái）測量（liàng）各種動力裝置的機械性能。DW及DWD係列主要（yào）由旋轉部分(感應盤)、擺動部分(電（diàn）樞和勵磁部分)、測力部分和校正部分組成。

　　勵磁繞組通電後，產（chǎn）生一（yī）個閉合磁通。當感應盤(齒狀)旋轉時，氣隙磁密隨之發生周期性變化，感應出渦流（liú），由於“渦流”和磁場的耦合作用，在（zài）轉（zhuǎn）子（zǐ）上產（chǎn）生製動力矩，而在電樞體上則產生與拖動力矩相同的轉矩，並經裝在電樞體四氟上的力傳感器檢（jiǎn）測出來，從而達到測試扭矩的目的。 在轉速測量上，采用非接觸式的磁電式轉速傳感器，將轉速信號轉換成電（diàn）信號（hào）輸出。

　　本機適用於中（zhōng）、小型（xíng）功率電（diàn）機、汽車、內燃機、燃氣輪（lún）機、水輪機、工程（chéng）機械、林（lín）業、礦山、石油鑽（zuàn）采等機（jī）械的性能試（shì）驗，也可（kě）作為其它動力設備的吸功裝置消聲設備。

　　性能特點

　　結構（gòu）簡單，操作維護方便;

　　製動力矩大，測試精度高，工作穩定;

　　轉動慣量小，動態響應快;

　　與測控（kòng）係統配套，可實現自動化（huà）操作。

　　性能指標

　　冷卻水壓：0.02～0.1Mpa。

　　測功機出水溫度：小於55oC

　　工作方向：左旋或右旋，連續工作（zuò）。

　　扭矩測量精度：±0.4%F.S

　　轉速測量精度：±1r/min

　　Eddy current dynamometer is the advanced load dynamometer equipment, mainly used to measure the mechanical properties of various power plant. DW, and DWD series mainly by the rotating part (sensor plate), swing part (armature and the excitation part), part of the measuring and calibration components.

　　After the excitation winding power to produce a closed magnetic flux. When the sensor disk (dentate) rotation, the air-gap flux density in the ensuing cyclical changes, induced eddy current, due to "swirl" and the magnetic field coupling, in the rotor to generate braking torque, and in the armature body, while in produces the same torque and drag torque, and mounted on the armature by the force sensors on the body of PTFE detected, so as to achieve the purpose of testing torque. In the speed measurements, using non-contact magnetic-electric speed sensor, the output speed signals into electrical signals.

　　This machine suitable for medium and small-power motors, automobiless, internal combustion engines, gas turbines, turbine, engineering, machinery, forestry, mining, oil drilling and other mechanical performance tests, but also other power equipment can be used as the suction power device muffler equipment.

　　DW Series (disc) eddy current dynamometer

　　DWB Series (claw type) eddy current dynamometer

　　Features ：

　　Simple structure, convenient operation and maintenance;

　　Braking torque large, high accuracy, stable;

　　Moment of inertia is small, fast dynamic response;

　　Supporting monitoring and control system can realize automation.

　　Performance：

　　Cooling water pressure: 0.02 ~ 0.1Mpa.

　　Dynamometer water temperature: less than 55oC

　　Direction: L-or D, continuous work.

　　Torque measurement accuracy: ± 0.4% F.S

　　Speed Measurement Accuracy: ± 1r/min