Accession Number : ADA131732

Title :   The Use of a Formal Simulator to Verify a Simple Real Time Control Program.

Descriptive Note : Technical rept.,

Corporate Author : TEXAS UNIV AT AUSTIN INST FOR COMPUTING SCIENCE AND COMPUTER APPLICATIONS

Personal Author(s) : Boyer,Robert S ; Green,Milton W ; Moore,J Strother

PDF Url : ADA131732

Report Date : Jul 1982

Pagination or Media Count : 20

Abstract : The authors present an initial and elementary investigation of the formal specification and mechanical verification of programs that interact with environments. They describe a mechanical proof that a simple, real time control program keeps a vehicle on a straightline course in a variable crosswind. To formalize the specification they define a mathematical function which models the interaction of the program and its environment. Then state and proved two theorems about this function: the simulated vehicle never gets farther than three units away from the intended course and homes to the course if the wind ever remains steady for at least four sampling units.

Descriptors :   *Computerized simulation, *Computer program verification, *Mathematical models, *Control systems, *Vehicles, Crosswinds, Real time, Fortran, Interactions, Theorems, Specifications, Automatic pilots, paths

Subject Categories : Numerical Mathematics
      Computer Programming and Software
      Couplers, Fasteners, and Joints
      Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE