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A virtual controller can be added and tuned to give desired overall system response. Graphical control element such as sliders and buttons allow control of what-if analysis for operator training or controller tuning. Although VisSim was originally designed for use by control engineers, it can be used for any type of mathematical model.
"The signal flow graph is another visual tool for representing causal relationships between components of the system. It is a simplified version of a block diagram introduced by S.J. Mason as a cause-and-effect representation of linear systems." — Arthur G.O. Mutambara: Design and Analysis of Control Systems, p.238
An example of a closed-loop block diagram, from which a transfer function may be computed, is shown below: The summing node and the G(s) and H(s) blocks can all be combined into one block, which would have the following transfer function: () = + ()
Block diagram of a control system with disturbance. The sensitivity function also describes the transfer function from external disturbance to process output. In fact, assuming an additive disturbance n after the output of the plant, the transfer functions of the closed loop system are given by
Block diagram illustrating the feedback linearization of a nonlinear system Feedback linearization is a common strategy employed in nonlinear control to control nonlinear systems . Feedback linearization techniques may be applied to nonlinear control systems of the form
A block diagram is a diagram of a system in which the principal parts or functions are represented by blocks connected by lines that show the relationships of the blocks. [1] They are heavily used in engineering in hardware design , electronic design , software design , and process flow diagrams .
A functional block diagram is a block diagram, that describes the functions and interrelationships of a system. The functional block diagram can picture: [11] Functions of a system pictured by blocks; Input of a block pictured with lines, and; Relationships between 9 functions; Functional sequences and paths for matter and or signals [12]
A functional block diagram, in systems engineering and software engineering, is a block diagram that describes the functions and interrelationships of a system. The functional block diagram can picture: [1] functions of a system pictured by blocks; input and output elements of a block pictured with lines; the relationships between the functions ...