Automatic Compensation of Thermal Deformations of the Carrying Structures of Cyber-Physical Information Measuring Systems

Abstract

AbstractThe ways of creation, possible algorithms of operation of the system of automatic control of thermal modes of supporting structures of information-measuring system of autonomous objects is considered. The problem of synthesis of the system of automatic stabilization of the temperature field of cyber-physical information-measuring systems by means of discretely distributed control is solved. The system provides an essential decrease of the thermo-deformation measurement error level, which is caused by deformation of supporting structures due to unstable and nonuniform heat release from information-measuring devices, placed on a structure. For the compensation of thermal deformations, an appropriate system of thermal mode support is used. The system consists of controlled heat sources used to compensate for the thermal gradients of the supporting structure arising under the influence of the heat generated by the information and measuring system devices and of the external thermal radiation on the structure. An effective economical algorithm of control of the controlled heat sources specially placed on the structure is suggested. This algorithm provides the compensation of the load-carrying structure thermal gradient up to the admissible level. The thermal deformation component of the information and measurement error, which is the cause of distortion of the operating and service information of an autonomous object, is reduced by compensation of the thermal gradient by an automatic control system of the operating modes of the distributed controlled heat sources. The control algorithm and structure of the system are implemented by special software of the onboard computer.KeywordsAutonomous objectThermal deformation compensationControlled heat sourcesThermal regime