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Internal Precision And The Common Sample Rate, James C. Kirkwood
Internal Precision And The Common Sample Rate, James C. Kirkwood
Retrospective Theses and Dissertations
The relationship between internal precision and input/output precision and the ratio of sample frequency to signal frequency has been described in qualitative terms for the general case and in quantitative terms for many special cases. This paper attempts to generate quantitative approximated guidelines for the general case. Lowpass and bandpass digital filters are implemented using cascaded second order sections via a program that varies the amount of internal precision available for the emulation, and calculates the error produced compared to a 64 bit standard. The errors are plotted, and general equations relating input/output precision and internal precision and the ratio …
A Comparison Of Analog And Direct Digital Control (Ddc) Of A Physical Process, Clifton R. Hargrove
A Comparison Of Analog And Direct Digital Control (Ddc) Of A Physical Process, Clifton R. Hargrove
Retrospective Theses and Dissertations
The following report presents the development of a computer-based system designed to examine the response of a physical process is a process trainer, PT326, from Feedback Corporation. There are two main categories of control available to the user: (1) analog control and (2) digital control. Within each of these categories the following types of control systems are available: (1) Proportional control, (2) Proportional-Integral control, (3) Proportional-Integral-Derivative control and (4) On-Off control. The user can examine both regulator and servo response for any of the given control systems. All parameters associated with the selected control system are variable and user-input. The …