Abstract
The paper is devoted to experimental investigation of a system consisting of a double physical pendulum with magnetic interaction caused by a pair of permanent magnets repelling each other – one mounted on the end of a second link of a pendulum and one mounted in the body of the setup. To the experimental rig of double physical pendulum system with the first body periodically forced a constructed magnetic interaction forces measurement system is added. The work consists of investigation on how magnetic interaction forces depend on pendulum’s links relative angle. Constructed measurement system consists of two links shafts encoders and one force sensor – extensometer beam with an output signal amplifier. Three analog signals are read by acquisition device, sent to connected PC and processed in LabVIEW measurement software programs. The dynamics of the system is also observed. Regular and chaotic behaviors of the system are recorded depending on the frequency of the motor. The work is the first approach to electromechanical system of the double physical pendulum with magnets. Such system is a unique construction. The magnetic forces measurement system is constructed and tested. The regular and chaotic behaviors of the system are shown and discussed.
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