Abstract
AbstractSpherical tanks are often used in process industries as storage or surge tank where control of level is essential. The liquid level in the spherical tank is modeled using first principle technique. A sliding mode controller (SMC) is designed initially to get the information of the stable closed loop process. Fuzzy-based SMC controller is developed by collecting the sliding surface data to reduce the chattering effect caused by SMC and to get the smooth sliding surface. The designed controller can drive the system states to the boundary layer. The performance of the proposed controller is compared with IMC based PI controller and the SMC. Proposed controller performance is encouraging and can be suggested for implementation in controlling the liquid level in spherical geometry.
Highlights
Storage tanks are often used in chemical process industries
We can infer that Fuzzy-sliding mode controller (SMC) controller can track the set point smoother and faster without any overshoot compared to the SMC controller and IMC-PID controller
Spherical storage tanks are used in process industries to store inflammable liquids from the safety point of view
Summary
Storage tanks are often used in chemical process industries. The liquid level in these tanks show nonlinear dynamical behavior and is difficult to control compared to other available containers. Vessels are of different geometry like cylindrical, conical or spherical in shapes. Sreepradha received her BE (Electronics and instrumentation) and ME (control and Instrumentation) degrees from Anna University, Chennai, India in 2005 and 2007 respectively. Her area of interest is process control and control system. She is currently pursuing research at Anna University, Chennai, India
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