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Position Control System of Hydraulic CylinderBased on Microcontroller | ||
| Journal of Engineering and Sustainable Development | ||
| Article 1, Volume 12, Issue 3, 2008, Pages 25-39 | ||
| Author | ||
| Munaf F. Bader | ||
| Abstract | ||
| Recently, the industrial applications using an electro-hydraulic system have been widely used. Since these are necessary and more ambitious specifications with respect to positioning accuracy, rapid motion and for generating large forces. Position control system is one of the applications in the area of the electro-hydraulic systems.In this work, a single ended hydraulic cylinder with limit position sensor was employed. It was proposed to develop a position control system that incorporates features of a microcontroller interfacing with position sensors and detecting the position of the hydraulic cylinder rod.Microcontrollers are ideal for embedded control applications since a self - contained control system may be constructed with just a few components. Developing such a system required to build a software part running on the microcontroller as well as a hardware part consisting of mechanical and electronic components. An electro-hydraulic system based on the proportional valve technology was employed. The heart of this system is an electrically adjustable proportional directional control valve linked to the embedded controller MCS51 via Proportional, Integral and Derivative (PID) controller .The simulation for the system was carried out by Simulink/Matlab model and the results show that the controller of the system can be easily tuned by software and adjusted to meet the requirements for the position control of the hydraulic shafts. Very high accuracy was achieved where error could be due to backlash of the hydraulic shaft and the resolution of converting analogue signals to binary.25 | ||
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