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The improved sequential batch reactor is a process of treating waste water economically. In short the sewage is generated by residential, commercial, industrial establishments. Improved Sequential Batch reactor process improves the quality of waste water . The waste water coming from toilets, baths, kitchens, and sinks draining into the sewers. The waste water or sewage from everywhere contaminates to water bodies when it is directly mixed with river, nallah and other water body it also affects on environment. So to overcome from that the best way to treat the sewage properly.Improved sequential batch reactors a type of activated sludge process in which the waste water is treated by mechanically in batches in reactors . Sometimes it includes Combi treat unit, and this combi treat unit is a power saving as well as power generating sequential batch reactor technology. This technology has been studied and recommended by reputed Indian Research Institutions such as Indian institute Technology and numerous consultants in the field. Attention has to be paid to the fact that suspended solids are always present in the effluent.
Keywords : Sequential Batch reactor , Combi treat , Activated sludge, clarifier
 M. N. Rao & Datta, Waste water treatment.  Environmental Engg by Dr B C Punmia, Dr A K Jain  www.hnbc.in  HNB engineers private limited Pune
Brushless DC motor is an electrical motor has high efficiency and torque, long life, cheap maintenance, but it is a nonlinear so complicated in controlling its speed. The popular control system used is PID control. Many ways of determining PID parameters, but because of BLDC motors have non-linear properties so need the intelligent control techniques in setting up PID parameters. In this paper, a self-tuning fuzzy PID control system embedded in ATMega 16 microcontroller to control the speed of BLDC motor adaptively. The results of self-tuning controller PID with fuzzy logic for fixed speed reference at variation speed 1000-2500 RPM has a good transient response parameter value. On the reference up and down the controller is able to adjust the speed change adaptively. The test of momentary disturbance shows the speed is decreasing about 1 second and can back to set point quickly.
Keywords : BLDC, speed, fuzzy, ATMega 16
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In 2006, Cyber Physical Systems (CPS), the new word was invented in the United States . The combination of devices like sensors with embedded systems is quickly receiving its place in cyber world. These devices jointly with the information filed are becoming the main focal point, called as Cyber Physical Systems. This word was found keeping in mind the escaling significance of relations among the mutually related computing systems with the physical world . The author of this paper gives an overview of CPS architecture, its functions and its security threat.
Keywords : Internet of Things, Sensor, Cyber-physical systems, real time systems, embedded systems
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