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5.1: OBJECTIVES

  • Page ID
    58449
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    The discussion up to this point has focused on methods used to analyze the performance of a feedback system with a given set of parameters. The results of such analysis frequently show that the performance of the feed­back system is unacceptable for a given application because of such defi­ciencies as low desensitivity, slow speed of response, or poor relative sta­bility. The process of modifying the system to improve performance is called compensation.

    Compensation usually reduces to a trial-and-error procedure, with the experience of the designer frequently playing a major role in the eventual outcome. One normally assumes a particular form of compensation and then evaluates the performance of the system to see if objectives have been met. If the performance remains inadequate, alternate methods of com­pensation are tried until either objectives are met, or it becomes evident that they cannot be achieved.

    The type of compensation that can be used in a specific application is usually highly dependent on the components that form the system. The general principles that guide the compensation process will be described in this chapter. Most of these ideas will be reviewed and reinforced in later chapters after representative amplifier topologies and applications have been introduced.


    This page titled 5.1: OBJECTIVES is shared under a CC BY-NC-SA 4.0 license and was authored, remixed, and/or curated by James K. Roberge (MIT OpenCourseWare) via source content that was edited to the style and standards of the LibreTexts platform; a detailed edit history is available upon request.