Methods of Thermal Processes Modeling in OnBoard Navigation Devices with Random Variations in Parameters

The authors propose a methods for providing thermal operation modes of on-board navigation devices. The methods allow to solve one of the problems that developers of on-board navigation systems are faced with - to ensure the specified accuracy of operation at high heat loads, including internal heat generation on the electronic components of printed circuit assemblies. The authors propose adding, at the initial stages of preparation for the simulation, permissible control for random variations in the parameters of electronic components. This approach is a significant difference from the standard procedure for modeling thermal conditions. The ability to take into account random variations in the parameters of electronic components becomes possible if there is a formed base of structural elements. The application of the developed methods in the design of electronic on-board navigation devices allows a systematic approach to development and to increase the reliability and accuracy of devices to the technical task required level.