Microcomputer Implementation of Simulation Benchmarks in Heat-Transfer and Dynamic Process Analysis

Article Abstract:

The running efficiency of several mathematical models is assessed on five different computer systems: one mainframe, two minis, and two microcomputers. Interest was especially focused on using the microcomputers in simulation. The models considered included dynamic material balance, heat-transfer, and general support models. Benchmark runs were made and results were analyzed from a quantitative standpoint. Micrcomputers, although they performed markedly slower than large computers, did produce results the author feels are encouraging and indicate a role for the microcomputer in simulation. Tables and graphs summarizing results of the runs are included.

Engineering, Mathematical models, Manufacturing, Benchmarking, Benchmark, Performance Measurement, Dynamic Systems, Heat Transfer

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An Intel 2920 Microcomputer-Based Stabilization Controller

Article Abstract:

An analog output-feedback controller designed to stabilize an unstable third-order system is implemented on an Intel 2920 microcomputer. The unstable plant is simulated on an EAI 680 analog computer and the microcomputer is used as an observer in the feedback loop. The sampling interval depends on the length of the computer program and the speed of the microprocessor. The performance of the system controlled by the Intel 2920 microcomputer is compared with the corresponding performance of the analog-controlled system. Advantages and limitations of using the Intel 2920 microcomputer as a single-chip controller are discussed.

Control equipment, Control theory, Digital Signals, Performance, Feedback, Closed-Loop Systems, Analog Signals

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MPR Announces MathStat - A New Microcomputer Statistical Analysis System

Article Abstract:

Mathematica Policy Research, Inc. has announced MathStat, an interactive, menu-driven statistics package for microcomputers. In addition to statistical functions, the package supports table reporting and offers data sets that are MathStat formatted and ready to use. The package also offers a variety of data handling features.

Software, Mathematical software, Menus, Statistical software, New Product, product announcement, Software Packages, Statistical/Mathematical Software, Shell Programs, MathStat

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