Control Systems - Block Diagrams - Tutorialspoint BlockSumming PointTake-Off PointThe transfer function of a component is represented by a block. Block has single input and single output following figure shows a block having input X(s), output Y(s) and the transfer function G(s)sfer Function,G(s)=Y(s)X(s)⇒Y(s)=G(s)X(s)Output of the block is obtained by multiplying transfer function of the block with input.See more on tutorialspoint Block Diagram of Control System - Electronics Coach A block diagram representation in which there is only one forward and feedback block along with a single summing point and take-off point is the simplest form of closed-loop control system. It is also known as the canonical form of a closed-loop system. Control System | Closed Loop Open Loop Control System Open loop control system can be converted in to closed loop control system by providing a feedback. This feedback automatically makes the suitable changes in the output due to external disturbance. In this way closed loop control system is called automatic control system. Figure below shows the block diagram of closed loop control system in Block Diagram Reduction PDF fileFigure 3: Block diagram components Figure 4: Block diagram of a closed-loop system with a feedback element Control Systems - Introduction - Tutorialspoint The traffic lights control system which we discussed earlier is an example of an open loop control system. In closed loop control systems, output is fed back to the input. So, the control action is dependent on the desired output. The following figure shows the block diagram of negative feedback closed loop control system.
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