AutoTF: um ambiente web para modelagem de sistemas físicos

Abstract

This work presents AutoTF, a solution developed for modeling linear physical systems, allowing the user to visualize the transfer function from an input variable and an output variable. Electrical elements were considered for the construction of a first version of the simulator,creating possibilities to future versions implementations with elements of other natures, since each one has components that influence in the same way as sources, resistors, capacitors or inductors in the system to which it is inserted. The solution was designed so that communication with the user through its graphical interface was a di↵erential in circuit simulation, allowing the construction of a graphical model from the Canvas tool and its javascript API, ensuring that using browser Web pages could be useful to show all the steps until the presentation of the final result. The system uses the link graph as an alternative to represent the model proposed by the user, transforming it into a signal-flow graph from the linear functions generated by the interconnectivity matrices between the physical elements, so that Mason’s rule could be applied generating the transfer function. The results show that AutoTF meets the proposed objectives, guaranteeing reliability in the resulting functions, while graphic resources developed guide the designer from the beginning to the end of the modeling process.