Control System Design for Motor based on Temperature Dynamics


Authors : Esam Faleh Esam Alajmi; Soud Mohammed alhajri

Volume/Issue : Volume 6 - 2021, Issue 7 - July

Google Scholar : http://bitly.ws/gu88

Scribd : https://bit.ly/3m9rL9D

This study investigates and discusses thermal compensation errors. The disadvantages of the thermal stresses on the bearing and shafts are discussed, the impacts of the thermal stresses on the CNC machines' shafts are investigated in the literature review. The DC motor's control process is conducted based on the microcontroller basics and principles; the Arduino can control both the DC motor's direction and speed depending on the temperature variation. The knowledge and attachment of the temperature sensor are evaluated and demonstrated by the control of the temperature sensor in Arduino, and the appropriate coding is used. A prototype for the motor and temperature sensor is also built, and the necessary coding and wiring concepts are utilised. The H Bridge is used to investigate the motor control unit. Its logic and wiring are clarified, and then the connection to the circuit is made. The results give the correct wiring. The elements of the data sheets are examined and utilised to wire the circuit correctly. The findings confirm the advantages of utilising thermal control for the motor. The resulting stress is reduced if the thermal stress is considered. When the shaft temperature rises, the lubricants' viscosity will decrease and consequently reduce the shaft performance. The use of cooling fans is constructive in this case. After obtaining and discussing the results, some recommendations are made about the thermal compensation and the shafts' cooling process; the recommendations include the selection of appropriate fans to the volume in the present shaft, the suitable selection of lubricant viscosity, which reduces some of the high-temperature disadvantages, as well as the proper selection for the shaft fixing and bearings, which reduces the thermal stress impacts on the performance of the shaft as well as failure acceleration.

Keywords : Motor Control, DC Motor Direction, H Bridge, Thermal compensation Errors, Shaft Performance, Temperature Sensor.

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