AEMETEC's integrated digital hydraulic adopts mechanical feedback regulation and control mode, which is the key to development of digital hydraulic technology. The servo hydraulic system is electrical closed-loop feedback and control, compared with mechanical feedback regulation, not only low precision, slow response, the bigger problem is that it has serious uncertainty. The uncertainty is all valve control system, including: servo hydraulic or valve controlled digital hydraulic etc., adjusting algorithm parameters uncertainty. This uncertainty, often affect the whole system accuracy, response speed, and is the key factor to success. So we can say, integrated digital hydraulic with mechanical feedback control is more effective and accurate. In fact, if you know the internal mechanism of the servo valve that is not difficult to draw same conclusion, because servo valve is the use of machin-hydraulic feedback of the closed loop and achieve a perfect control, here is not to introduce the working principle of the servo valve.

AEMETEC respected integrated digital hydraulic due to its internal has a position closed loop capability, so the realization of micron repetitive positioning accuracy when it needs no additional sensor to the closed-loop feedback. And even in the speed control, because the pulse frequency corresponding to the digital cylinder speed, therefore does not need to use the sensor to implement closed-loop control. Many people don't know much about sensors. Most people think that the high accuracy of electrical sensors, in fact, this is a misunderstanding of many people. For example of magnetostrictive displacement sensor, You look carefully to its technical performance parameters, its error, linearity and temperature stability etc. these indicators have a "xx%FS", "FS" is "full scale" abbreviation. In fact, 1 meters of the distance, there will be an error of 0.1 mm. The ball screw precision classification is: 0,1,2,3,5,7,10 a total of 7 levels, general machinery by C7 and C10, NC devices generally use the C5 and C3 level, aviation manufacturing equipment and precision projection and three coordinate measuring equipment with C3 and C2, thus the ball screw accuracy is much higher than that of magnetostrictive displacement sensor. So we draw the attention and understanding of electric sensor has many interrelated effects of the technical parameters, such as: the relationship between linearity and temperature stability and accuracy.

AEMETEC's integrated digital hydraulic cylinder internal high precision mechanical feedback device, but does not exclude additional and fitted with an electric sensor for monitoring the use of redundancy protection. This allows digital hydraulic cylinder with double insurance, work more secure and reliable. This is AEMETEC in many requirements method, the application of a higher level of security for example in several national key applications, large-scale water conservancy projects, robot applications, are used in the design of redundancy protection. In addition, AEMETEC's integrated digital hydraulic products is also equipped with a pressure sensor is used to control the ability to achieve force.