Design of Adaptive Controller for Disturbance Force Compensation in Machine Tools

Chia, Wei King (2024) Design of Adaptive Controller for Disturbance Force Compensation in Machine Tools. Final Year Project (Bachelor), Tunku Abdul Rahman University of Management and Technology.

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Abstract

Milling machine is the second largest industrial sector, especially manufacturing industry. The milling machine can carry out almost all milling operations, such as gear milling, thread milling and angular milling. The milling machine on the production line requires high precision for better milling accuracy and result. Ballscrew drive system is one of the commonly system driver that used in milling machine because it can produce high speed and accurate position with liner motion. Poor tracking positioning is caused by disturbances like cutting force, which must be present during the milling procedure. In this thesis, several spindle speeds with cutting forces of 1000, 1500, and 2000 rpm will be studied to determine their characteristics. In addition, three controllers, PID, nonlinear-PID (NPID), and nonlinear-PID with triple hyperbolic (NPID-TB), are developed and integrated into the ballscrew drive system, which only operates in one axis of rotation. Comparing the developed controllers’ tracking error reduction and disturbance rejection performance.