New PDF release: Continuous System Simulation

By D. J. Murray-Smith (auth.)

ISBN-10: 1461360668

ISBN-13: 9781461360667

ISBN-10: 1461525047

ISBN-13: 9781461525042

obtained through simulation extra speedy, effec­ computing device simulation of dynamic platforms is a subject that's becoming gradually in value tively and affordably than via experimentation and checking out of the true method. process perfor­ within the actual sciences, engineering, biology and drugs. the explanations for this pattern mance can be investigated utilizing simula­ relate not just to the progressively expanding tion for a wider variety of stipulations than will be meditated for the genuine process strength of desktops and the swiftly falling expenditures of undefined, but additionally to the supply due to working constraints or defense of applicable software program instruments within the type of necessities. related components can observe in simulation languages. Problem-oriented lan­ different fields, reminiscent of biomedical platforms guages of this sort support those people who are now not engineering. experts in computational easy methods to trans­ approach simulation, utilizing electronic pcs, can relate both to types in line with continu­ past due a mathematical description right into a simula­ tion software in an easy and simple ous variables or to discrete-event descriptions. model. they could additionally offer worthy diag­ non-stop procedure simulation strategies are utilized to structures defined through units of fluctuate­ nostic details while problems are encountered. hence, a simulation lan­ ential equations and algebraic equations.

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Sample text

However, the results would provide information only about the dynamics of the complete system for small perturbations about each nominal flight condition. Often one is also interested in the response for large disturbances or large command signals, and the only way in which a design can be 21 assessed in this way is by means of a nonlinear simulation model. In the case of the helicopter application this nonlinear simulation study would normally include assessments carried out using real-time methods in a ground-based piloted flight simulator facility.

This submodel diagram has the form shown in Fig. 14. Since the order of the denominator is always equal to or greater than the order of the numerator of the transfer function for physically realizable systems, the number of denominator factors is always equal to, or greater than, the number of numerator factors. Therefore, at the end of the process of grouping these factors in pairs, there may be some additional terms involving X n_, = -13 n_jX,,_j + (a n-j+1 - 13 n-j+1 )x"_j+1 X, =-/3,x, +(a 2 -/32)X 2 + ...

A particularly important case involves the modeling of a digital computer used for control purposes within a closed loop, as shown in block diagram form in Fig. 24. The discrete element involves the processor and the software used to implement the digital control algorithm being used. The interface between the continuous and discrete parts of the system involves analog to digital and digital to analog converters. The development of a mathematical model in this case requires that the analog interface 48 Problem organization for continuous system simulii1ion REF.

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Continuous System Simulation by D. J. Murray-Smith (auth.)

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