Nptel industrial automation and control joshua lamorie. The numerator of the ratio defining productivity tend to increase with quality, because of positive market response. Bikash kumar dey department of electrical engineering iit bombay, powai mumbai 400 076, india subject expert. Cascade control, overriding control, selective control, split range control 18. In this control method, the frequency f 1t 0n is kept constant while the on time t is varied. Questions from video lectures of nptel sl no questions video number time in minutes 1 give some examples for the communication systems which use space as the channel. This can be kept constant throughout operation by using two flow indicators and a ratio controller. In this paper, a method to develop and design a fuzzyhybrid control on an industrial controller to control speed of an induction motor and implementing a constant vhz ratio control is presented. Find the transfer function of the feedforward controller for complete disturbance rejection.
Lecture 32 combustion instability due to equivalence ratio fluctuation. Electrical engineering industrial automation and control nptel. The course, in 40 lectures, discusses a wide range of related topics from the advantage and architecture of automation systems, measurement systems including sensors and signal conditioning, discrete and. We generalize this form by associating a controller gain with the ratio of process gains.
The desired output of a system is called the reference. The primary goal is to keep the variance in the output very low even in the presence of noise inputs. Aug, 2017 lecture series on control engineering by prof. Ramkrishna pasumarthy, department of electrical engineering, iit madras. Other factors, which we will see, must be stated along with flow rate m3hr. If actual airfuel mixture has less air than what the stoichiometric ratio indicates, the mixture is said to be rich. Feedback temperature controller is used to compare the water outlet temperature with the set point and control the steam flow rate by opening or closing the. Nptel online videos, courses iit video lectures well organized. Industrial automation and control electrical engineering. Applying ratio control you can get a much better grasp of ratio control by considering some specific examples. How to download all of the lectures for a course in nptel. Pid proportionalintegralderivative will consider each in turn, using an example transfer function a. This course provides an overall exposure to the technology of industrial automation and control as widely seen in factories of all types both for discrete and continuous manufacturing. Corrective action occurs as soon as the controlled variable deviates from the set point, regardless of the source and type of disturbance.
The student is encouraged to seek more detailed information from. Principles of automatic control lecture 10 pid control a common way to design a control system is to use pid control. Cascade control is an advanced application of the pid that can improve control of systems that are subject to significant lag. When excess air is used, poc will contain o2 in addition to co2, h2o, n2 and. Ppt cascade, ratio, and feedforward control powerpoint. Fm ratio and the operation of an activated sludge process. Nptel, online courses and certification, learn for free. The details of the tuning procedure for feedforward controllers can be found in 2. Each of these techniques offers advantages with respect to disturbance rejection. Advanced control system design nptel online videos.
May 19, 2008 lecture series on industrial automation and control by prof. Classification, absolute and secondary instruments, indicating instruments. Taguchi method is a processproduct optimization method that is based on 8steps of planning, conducting and evaluating results of matrix experiments to determine the best levels of control factors. Combustion chamber geometry and air motion optimization well matched to fuel injection system 3. Feedforward control is a general methodology for compensating for measured disturbances. Cascade reduces the effect of specific types of disturbances. The second example uses the reflux ratio as the control parameter. Mod11 lec25 optimal control formulation using calculus of variations mod11 lec26 classical numerical methods for optimal control mod11 lec27 linear quadratic regulator lqr design 1.
The air to fuel ratio of the fluid going to the combustion chamber is set at 2. The sputter yield ratio of target atoms expelled to incident atoms impinging on the target increases with increasing energy plasma power or dc bias. If the outflow qo increases then the level in the tank will fall. Chemical engineering process control and instrumentation nptel. Write down three typical applications of ratio control. The weight of microorganisms under aeration, from fm ratio and the operation of an activated sludge process gary lee mishoe gary lee mishoe, cao, is the utilities director for lake placid activated sludge process ranges for fm ratio control.
The most popular type is the 3phase, squirrelcage ac induction motor. Lecture series on industrial automation and control by prof. Nptel, an elearning initiative by the 7 indian institutes of technology and the indian institute of science with the support of the mhrd, govt. Learn for free, pay a small fee for exam and get a certificate. Sarkar department of chemical engineering,iit kharagpur. Process control and instrumentation web course chemical. So, you want to download all of the video lectures for a course in nptel. The manual is not intended to be an exhaustive reference, nor a design manual. Predictive control, control of systems with inverse response 17. Range range is determined not by the cooling tower, but by the process it is serving. To introduce controller design methods that accommodate process uncertainty.
Combined feedforward plus feedback control can significantly improve. Assume we want a blender, that is, to blend two streams, a and b, in a proportion or ratio r. When one or more output variables of a system need to follo w a certain ref. Feedforward and ratio control in chapter 8 is was emphasized that feedback control is an important technique that is widely used in the process industries.
Simr oc k desy,hamb urg, german y abstract in engineering and mathematics, control theory deals with the beha viour of dynamical systems. Nagaraju associate professor r v college of engineering bangalore. Feedforward control differs from feedback control in that the load or primary disturbance is measured and the manipulated variable is adjusted so that deviations in the controlled variable from the set point are minimized. Cascade, ratio, and feedforward control 1 chapter 12. Control valves may be broadly classified by their function as onoff type or flow regulating type. To present an alternate way of thinking about cascade control that leads to improved performance. The cascade architecture can be applied effectively to such sluggish processes when a related and faster responding. Jul 17, 2014 cascade control is an advanced application of the pid that can improve control of systems that are subject to significant lag. Lecture 14 feedforward control ratio control youtube. Industrial automation and control nptel online videos, courses. For a given type of fuel, airfuel ratio controls the.
Nptel provides elearning through online web and video courses various streams. Lecture 30 ratio analysis and interpretation 1 lecture 31 ratio analysis and interpretation 2 digimat the no. Module 5 lectures 17 to 19 mat foundations topics 17. Industrial automation and control usb media storage type. When designing a distillation column it is usually the reflux ratio that is determined. Alan doolittle pxtepe evaporation h nkt o ea kt 31012 3 2 1 2 j p ktm 2 2 r m k p t area d r evaporation 24 22 for evaporation, the vapor pressure is, where is the surface tension of the liquid, n is avagadros number, and h is the enthalpy of evaporation. First, the response of the true controlled variable to a disturbance can be evaluated. Block diagram of a feedback control system with a true controlled variable, cvtis, and an inferential controlled variable, cvs.
Nptel video lectures, iit video lectures online, nptel youtube lectures, free video lectures, nptel online courses, youtube iit videos nptel courses. The denominator may actually decrease with higher quality, because all of its terms materials, direct labobr, etc. Distillate rate the third example is for high purity tops. May 26, 2019 the main goal of nptel phase ii 200914 was to build on the engineering and core science courses launched previously in nptel phase i. Poe, saeid mokhatab, in modeling, control, and optimization of natural gas processing plants, 2017. Ece5530, introduction to robust control 79 the optimal lqr controller has very large gainphase margins. The weight of microorganisms under aeration, from fm ratio and the operation of an activated sludge process gary lee mishoe gary lee mishoe, cao, is the utilities director for lake placid activated sludge process ranges for. Advanced control system design nptel online videos, courses. Knowledge of the process is the basis for successful process control. The first order lag is the simplest transient response where the output immediately responds to a step change in the input see figure 1. Exhaust gas recycle egr for nox control cooled for impact 4. Mukhopadhyay, department of electrical engineering, iit kharagpur. Feedforward control an overview sciencedirect topics. For example, a cooling tower sized to cool 4540 m 3hr through a.
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