This paper presents a new algorithm for automatic tuning of decentralized PID control for two-input two-output (TITO) plants that fully extends the single-loop relay auto-tuner to the multiloop case. The tuning procedure consists of two stages. In the first, the desired critical point, which consists of the critical gains of the two loops and a critical frequency, is identified. Unlike SISO pla...

In this study, a black box modeling of the coupledtank system is obtained by using fuzzy sets. The derived model is tested via adaptive neuro fuzzy inference system (ANFIS). In order to achieve a better control performance, the parameters of three different controller types, classical proportional integral controller (PID), fuzzy PID and function tuner method, are tuned by one of the evolutiona...

Integrating processes are widely encountered in electro-mechanical systems and other areas. Automatic tuning of PID controllers for this type of system requires special consideration since the underlying system is unstable. Using relay feedback control in a closed-loop setting, an auto-tuner is designed to systematically find the controller parameters using a frequency sampling filter model. Th...

The potential for gene discovery, fueled by DNA microchip technology and the sequencing of hundreds of genomes, is unprecedented. In this context, trying to discover genes that are actually of significance rather than merely appearing so due to noise is of utmost importance. We present a web application, CHIP TUNER, which assists in this gene discovery process. Our system uses evidence-based no...

Amorpha-4,11-diene synthase (ADS) from Artemisia annua and (+)-germacrene synthase (GDS) from Zingiber officinale were expressed in Escherichia coli under different conditions to optimize the yield of active soluble protein. The cDNAs of these enzymes were inserted into the pET28 vector (Novagen) and expressed in four different bacterial strains; BL21 (DE3), BL21 (DE3) Tuner, BL21 (DE3) pLysS a...

A new architecture is presented for a single-chip tuner for digital terrestrial television, based on existing double conversion and direct conversion topologies. The new design forms part of a mixed-signal Digital Video Broadcasting–Terrestrial (DVB-T) receiver system, employing digital signal processing at baseband to ensure minimal performance requirements for the analog circuitry. To evaluat...

We report advances in compression tuning of fused-silica microsphere whispering-gallery resonances and a practical use of the improved compression tuner. The advances include extending the tuning range and enhancing the tuner’s response speed; these lead to the new application of using the tuner to lock to a laser, keeping a single whispering-gallery mode on resonance as the laser frequency is ...

The Basrah Refinery, Iraq, similarly to other refineries, is subject several industrial constraints. Therefore, the main challenge optimize parameters of level controller process unit tanks. In this paper, a PI designed for these important processes in which separator drum (D5204). Furthermore, improvement achieved under constraints, such as inlet liquid flow rate tank (m2) and valve opening yi...

Introduction; The measurement of the four noise parameters ("s) NPs of a two-port in the microwave frequency range is usually performed by measuring the two-port device noise figure F for a minimum of four source reflection-coefficients r,, produced with a tuner connected at the two-port input (reflection-type tuner) [I ~ 61. The equation relating F and rs, ( i = 1, ..., N) is expressed in line...