Nonlinear Mathematical Modelling of Servo Pneumatic Positioning System

Saravanakumar, D.; Mohan, B.

doi:10.4028/www.scientific.net/amm.313-314.962

Cited by 4 publications

(3 citation statements)

References 8 publications

(16 reference statements)

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“…The position transducer senses the present position value which is used by the fuzzy controller to manipulate the spool movement in the proportional directional control valve. The mathematical model of the system has been described in [4,5]. The design of the Fuzzy controller is shown in [4].…”

Section: Servo Pneumatic Position Systemmentioning

confidence: 99%

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A Study on Influence of System Parameters on Servo Pneumatic System and Multi-Response Optimization Using Taguchi – Grey Methodology

Saravanakumar

Mohan

Muthuramalingam

2015

AMM

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Servo pneumatics is a mechatronic approach that enables accurate position control of pneumatic drives with high speed. Simulation model of the servo pneumatic system with fuzzy PD controller has been created in Matlab-Simulink software using nonlinear mathematical model of the system. The influence of supply pressure and size of the cylinder on the positioning accuracy and speed has been studied. It is observed that the supply pressure is the most influencing factor in positioning accuracy and speed compared to the size parameters of the cylinders. Further a multi-response optimization of the system parameters minimize settling time, overshoot and ITAE (Integral of time-weighed absolute error) values has been carried out using Taguchi based Grey relational analysis methodology. The optimal system characteristics have been observed when supply pressure is 0.2 MPa, diameter of the cylinder is 0.05 m and length of the cylinder is 0.15 m.

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Section: Servo Pneumatic Position Systemmentioning

confidence: 99%

“…The simulation model of the pneumatic cylinder positioning system has been created based on the mathematical model in [4,5] using Matlab-Simulink software. The simulation model of the servo pneumatic positioning system with the fuzzy PD controller is shown in Fig.…”

Section: Simulation Environmentmentioning

confidence: 99%

A Study on Influence of System Parameters on Servo Pneumatic System and Multi-Response Optimization Using Taguchi – Grey Methodology

Saravanakumar

Mohan

Muthuramalingam

2015

AMM

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“…These valves are widely used in pneumatic transmission systems and their availability in the market is high. However, when using the on-off solenoid valves, precise motion control of the pneumatic actuators is often difficult due to the on-off valve's response time limitation and the high nonlinearities of the pneumatic system [7]. Therefore, it is very important to study suitable control strategies for the position of the pneumatic actuators using the on-off valves.…”

Section: Introduction *mentioning

confidence: 99%

A Method for Improving Position Control Performances of a Pneumatic Cylinder Using On-Off Solenoid Valves

2022

JST: SSAD

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Technology using on-off solenoid valves is currently being applied in controlling pneumatic actuators to replace the use of the pneumatic proportional/servo valves. However, controlling the pneumatic actuators using on-off solenoid valves is often difficult due to the low switching frequency of these valves and the high nonlinearity of the pneumatic system. In this paper, we first re-evaluate a controller proposed by Truong in 2020, in which four pneumatic on-off valves were used. We then modify the Truong's controller by dividing the desired position input of the cylinder into two controlled position intervals and each interval will use a separate control law. Seven operating modes of the four on-off solenoid valves combined with the Pulse Width Modulation method (PWM) are used. The experimental research method is carried out. The modified controller is evaluated by comparing it with the Truong’s controller and a controller for a pneumatic system using pneumatic proportional valves at the same conditions of the desired position inputs. Comparison results verify the usefulness of the modified controller.

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