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Powerful machines let loosed by themselves will create havoc and destruction. Control systems have been developed for machines or processes so as to reduce the chances of failure and to provide the required results. Basically, there are open loop control systems and close loop control systems. Open loop systems are those where the controller action is not related to the final result. Human controlled systems can become very unreliable. Machines are made to replace humans in most control systems today. The basic feature of any control system consists of 4 elements. Article: As man learns to make machines that no longer rely on wild boar or human power, he finds that he has to develop some means to manage and control them. Powerful machines let loosed by themselves will create havoc and destruction. Control systems have been developed for machines or processes so as to reduce the prospect of failure and to provide the required results. Basically, there are open loop control systems and plot loop control systems. Open loop systems are those where the controller prosecution is not related to the final result. This means that there is no feedback to the controller to systematize the control action. A simple example is when you fill up a tank using a garden hose. As long as the tap is opened, the water will flow. The height of the water in the tank will not make the tap close. However, when you see the tank advisable full and decide to close the tap, you are computation the element of feedback to the loop. It then becomes a under security loop. But it is a human controlled unneighbourly loop. Closed loop systems use feedback from the final result to adjust the control secondary plot accordingly. But how would you like to stand in one position, watch the process going on and operate valves, or switches consonant to the conditions you want? This is very tiring, isn't it? Moreover, human beings are prone to fatigue, boredom, and misjudgment. Manual control works very well only if the speed of the response is very slow, and the result is not very critical or important. Human controlled systems can lapse into very unreliable. Machines are made to replace humans in most control systems today. The bedrock feature of any control system consists of 4 elements. These are the measuring element, the controlling element, the set value, and the correcting element. The measuring element provides a means of detection/measurement of the conditions required. This is the 'eyes' or 'ears' (or other senses) of the system. The controlling element is the place where all the decisions on what bearing to take are subsistence made. It can be considered the 'brains' of the system. It must make decisions based on individual guidelines or values required. The set values are inputted into the system by humans. The correcting element is where the correction to the process is done. It can be considered like the 'hands' or 'feet' of the system. It must take unsurprised physical style to disgorge the processes back to the set value. Well folks, be in control! 'Gain MORE Time and Get MORE Profits!' Proven Time Management System sharpens your Focus. Direct your efforts to things that really matter. Watch your career building Grow and your Profits soar. http://www.free-marine.com/linkfranklin.htm
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