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    Communication and Control Strategies

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    1. Define the concept of control.

    2. What are some benefits to the company now and in the future?

    3. What are some recommendations for control actions to take right now?

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    Solution Preview

    Please see response attached, which is also presented below. I provided two definitions of control put forth by different theorists, but be sure to check your course material to see if you are expected to adhere to a specific control theory and the related definition of control. I hope this helps and take care.


    Let's take a closer look through discussion and examples.

    1. Define the concept of control.

    Theorists have many different ways to define control, so let's look at some definitions and see what they have in common.


    Control is the operation mode of a control system which includes two subsystems: controlling (a controller) C, and controlled, S. They interact, but there is a difference between the action of C on S, and the action of S on C. The controller C may change the state of the controlled system S in any way, including the destruction of S (i.e., in reference to on-line information systems). The action of S on C is formation of a perception of system S in the controller C. This understanding of control is presented in Fig.1. (see in the attached response)

    In Fig.2, we define the concept of perception. We see in the controller an agent, which is responsible for its actions, and a representation of the controlled system, which is an object whose states we identify with perceptions. The relation between representation and agent is described as a flow of information: the actions of the agent depend on this flow. Thus the action of S on C is limited, in its effect, by changing only S's representation in C, not the rest of the system. Thus the asymmetry of the control relation: C controls S, but S does not control C. The action of S on C is "filtered" through the representation: its effect on C cannot be greater than allowed by the changing state of the representation.

    Of course, two systems can be in a state of mutual control, but this will be a different, more complex, relation, which we will still describe as a combination of two asymmetric control relations.

    In many cases the controlled system can be also seen in greater detail, which is done in Fig.3. We describe the controlled system using some variables and distinguish between the variables directly affected by the controller, from the variables, which are observed by the controller in perception. The causal dependence of the observed variables on the affected variables is determined by the intrinsic dynamics of the system. We also must not forget about the effect of uncontrollable disturbances on the observed variables.

    In Fig.3 ( see attached response), we also made an addition to the controller: it now includes one more object which influences the agent: goal. The agent compares the current representation with the ...

    Solution Summary

    This solution defines the concept of control and explains the current and future benefits of using control actions, including recommendations to a company for immediate control actions.