Control of air pressure inside an inflatable textile pocket of an active backrest cushion
Résumé
The objective of this paper is to propose a control strategy of air pressure inside an Inflatable Textile Pocket (ITP) in order to design an adjustable seat backrest for drivers comfort. For the said purpose, firstly a brief model of an Electro-pneumatic Pressure Converter (EPC) is presented along with the pressure dynamics inside an IFP. This nonlinear model is then linearized around an operating point and a control synthesis is performed using the classical linear control theory. The obtained PID controller is implemented on a developed experimental test bench. Furthermore, a comparative analysis, between the feedback reposes obtained with the help of the proposed control and an industrial pressure regulator, is also performed to show the effectiveness of the proposed controller.