Autolanding system design for VTOL concept UAV aircraft using VHDL

Abstract

The use of autonomous design system technologies in aviation now days is far beyond human thinking back 50 years ago, These technologies have been produced to make human life easier. This technology is also including auto landing system (ALS), ALS is used to land an aircraft automatically without human operation. This system is built to reduce an aircraft crash due to the pilot's fault or external condition such as strong wind and bad whether. For this project, ALS is developed by using system programming language such as Very High Speed Integrated Circuit Hardware Description Language (VHDL). VHDL is a language for describing digital systems. VHDL is intended to support the hierarchical design, documentation, and simulation of hardware from simple logic gate to complex digital systems. Hardware designs can be specified as purely behavioral descriptions, data flow description, structural description, or any mixture of behavior, data flow and structure. The versatility of VHDL allows it to be used for this auto landing system circuit technology while remaining independent of underlying implementation. By using this language, ALS is developed by combining three subsystems which are control unit, comparator and stabilizer subsystem.