Control of liquid level in the interacting nonlinear spherical tank due to the variation in the area of cross section with height is the basic problem in the industries. This paper presents the controlling of nonlinear interacting system using Skogestad PID controller. The system of two tanks is considered to be a second order system. Skogestad Proportional Integral Derivative Controller is bei...

Septic tanks are used for the removal of organic particulates in wastewaters by physical accumulation instead of through the biological production of biogas. Improved biogas production in septic tanks is crucial to increase the potential of this system for both energy generation and organic matter removal. In this study, the effect on the biogas production and biogas quality of coupling a 20 L ...

Slurry tank storage facilities are playing an increasing role in mechanised farming. Accidental poisoning from gases produced in such tanks is a recognised hazard, and multiple fatalities have been reported.1 2 The principal constituents are methane, ammonia, carbon dioxide and hydrogen sulphide. The most dangerous of these is hydrogen sulphide which acts in a similar manner to cyanide, with re...

With liberalization of European market, many high head power plants in Switzerland increase their potential generation to remain competitive. The existing surge tanks have to be modified to keep the flow management constant. A relevant way to limit the time of mass oscillation is to increase head losses at the entrance of a surge tank with an orifice. This study focuses on the influencing param...

The ISAC Separated Function DTL is designed to accelerate ions of 3 ≤ A/q ≤ 6 to energies fully variable between 0.153 to 1.53 MeV/u. The DTL includes five IH-tanks with quadrupole triplets between tanks and triple gap split ring bunchers before tanks 2, 3, and 4. The final configuration of the DTL is due for commissioning in Dec. 2000. Recently a beam test with the first section of the DTL com...

A second order sliding mode control algorithm is presented for robust control of the liquid level in a pair of interconnected tanks. The controller is implemented on a laboratory rig. The implementation results show robustness to parameter variations such as tank area, the admittance coefficients of various pipes, leakage in the tanks and uncertainty in the pump dynamics. The potential of secon...

Major problems can occur when liquid sloshes in a tank, such as storage tanks during an earthquake, and this is important engineering problem to address. To analyze phenomenon, the finite-element method generally used but involves many degrees of freedom tank large. In paper, nonlinear numerical model with relatively few established for vertical horizontal two-dimensional sloshing rectangular e...

A new pressure, volume, temperature, and, time (PVTt) primary gas flow standard at the National Institute of Standards and Technology has an expanded uncertainty (k = 2) of between 0.02 % and 0.05 %. The standard spans the flow range of 1 L/min to 2000 L/min using two collection tanks and two diverter valve systems. The standard measures flow by collecting gas in a tank of known volume during a...

— Coupled Tank system used for liquid level control is a model of plant that has usually been used in industries especially chemical process industries. Level control is also very important for mixing reactant process. This survey paper tries to presents in a systemic way an approach predictive control strategy for a system that is similar to the process and is represented by two liquid tanks. ...