chapter-3
DESCRIPTION
Control systemTRANSCRIPT
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In the preceding chapter we used the Laplace transform to obtain transfer function models representing linear, time-invariant physical systems described by ordinary differential equations. This method is attractive because it provides a practical approach to design and analysis and allows us to utilize block diagrams to interconnect subsystems. In this chapter we turn to an alternative method of system modeling using time-domain methods. As before, we will consider physical systems described by an nth-order ordinary differential equation. Utilizing a (nonunique) set of variables, known as state variables, we can obtain a set of first-order differential equations. We group these first-order equations using a compact matrix notation in a model known as the state variable model. The time-domain state variable model lends itself readily to computer solution and analysis. The relationship between signal-flow graph models and state variable models will be investigated. Several interesting physical systems, including a printer belt drive, are presented and analyzed
Chapter 3: State Variable ModelsObjectives
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