Data acquisition and control unit for electro hydraulic applications

The paper describes a systematic approach regarding the development of the electro hydraulic applications. The constantly increased number of sensors used into this type of systems and the need of a control equipment able to implement local regulation loops, contribute to the design of a compact, multifunctional electronic module capable on one way to interface with the electro hydraulic system to measure it´s functional parameters and to drive it´s electro hydraulic constituent elements, and on the other, to interface with other control systems via a communication protocol implemented on a serial bus. The proposed module offers a high degree of flexibility both at the hardware level as an analogical input can be easily adapted to support voltage signals instead of current signals; and at the software level where it can be implemented various regulation algorithms depending on the electro hydraulic application. The microcontroller present into the module assures the usage of a reduced number of electronic components. This fact increases the robustness of the solution which is needed for the system to properly operate under heavy working environment conditions.