Publication: Modeling and control of a perturbed mechanical system
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Date
2023-07
Authors
Tang, Hooi Hung
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Abstract
The purpose of this project is to construct a mechanical model for dynamic system. The linear displacement of the linear actuator is unpredictable since there do
not have unique equation that can be used to measure the output displacement of the linear actuator. The output displacement is varying with different payload. In addition, the power consumption at different payload can be optimized such that a smaller load might consumes smaller power, therefore a constant maximum power supply to the system is not necessary. To achieve this, the system is identified and analysed to construct a dynamic model that can control the vertical displacement of the linear actuator. An open loop controller is designed to control the vertical displacement of the linear actuator and optimized the power consumption of the system at different payload. The dynamic model designed is different for each payload with varying PWM input. The optimized power consumption is varying at different payload as well. The PWM, which controls the current to the system is successfully optimized when different payload and varying input to the system, with the application of fuzzy logic controller. The output or actual speed of the system is tracking the reference input or desired speed with the plant model and fuzzy controller. Overall, this study helps to optimize the power usage of the system and predict the movement of the dynamic
system. Keywords: model, power, predict, fuzzy, optimized