الفهرس 
CHAPTER ONE INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
Pneumatic systems have been used in all branches of industry such as material handling equipment, medical equipment, and machine tools operations. The purpose of this thesis is studying the use of different control algorithms on the X-Y pneumatic position control systems. This study consisting of two parts, the first part is the simulation work through it the mathematical model of the X-Y pneumatic system is developed to describe the dynamics of the experimental test reg, and by using MATLAB/SIMULINK the simulation of the mathematical model is done in different cases of AISA controller (multistage AISA, single stage AISA, limited control effort AISA, and loaded Y-axis by using AISA) all these cases are compared with PD controller from the simulation results. The second part is the experimental work through this part the experimental X-Y pneumatic test rig components and the specifications of each part were explained, then the experimental results from the test rig is validated with other experimental work, then the simulation work in the first part is validated by using of the experimental work from X-Y pneumatic test rig from the result.
For controlling the position of the pneumatic cylinders two controller algorithms are used in this thesis. The first control is a new Approaching Index Switching Algorithm (AISA) for control the position of the pneumatic system. AISA is designed to switch between two different sets of controls based on an index value. The first controller represents the system output reaching the set value as quickly as possible, and the other controller represents the system output decaying to the desired angle. The second control is a Proportional-Derivative (PD) controller. Because it is generally applicable to the majority of control systems, PD controls have intrinsic utility.
The key distinction between PD controls is that they encompass more than half of the industrial controls now in use. The control of the flow rates by Flow Control Valve (FCV), control of servomotor, and also the control of the position sensor is a key parameter in determining the performance of the pneumatic cylinder position. It depends on the goals and mission requirements for launching it.
The simulation results showed that AISA has 50% faster response than PD. Meanwhile, this great enhancement in the speed of response that is shown to be attainable although a 50% reduction of allowable limits of the control signal is enforced compared to those allowed to the PD controller. Much better performance using the AISA compared to those of the PD control is obtained.
The X-Y pneumatic system experiment results show that the AISA is faster than the PD controller by (31.8 % to 38.15%) without overshooting for X-axis and Y-axis respectively. The ASIA is more accurate than the PD controller by (83.33% to 70.79%) for X-axis and Y-axis respectively. All the desired specifications of the system such as error, stability, and power consumption are robustly satisfied under AISA.