Question

Analyze each of the following control systems and determine whether they have self-regulation, what the process load would be and whether a process lag would be expected i. Air-condition system ii. A water level-control system as shown in Figure 2 Input flow Control vaive Controller int Flow out Figure 2

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Answer 1

Self Regulation: A self regulating Control system that compares a measured value of or process with a described set value and processes the resulting error signal to change some input to the process, in such a way that the process stays at its Point despite disturbances. (ie a feedback system) a) air Conditioning system: i) It is a self - regulated system: Because in air conditioning system, when room temperature decreases, the air Conditioner runs and reduces room temperature to the desired value. ii) Process load: in air Conditioning system, the process load would be Outside temperature, cooking and .(ie all those conditions which effects the working of ac system) ii) Process lag: the taken to heat or cool the room temperature is considered as the process lag. (ie time lag between working of air condition & the temperature of room) \r\n A water Level Control system. i) Here the water level control system shown in figure 2,