BLDC MOTOR ROTATIONAL SPEED CONTROL STRATEGY FOR ROLLER RIG TRAIN SIMULATOR DRIVE SYSTEM DEVELOPMENT

• Main Author: Farahdina, Siti
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/69605
• Institution: Institut Teknologi Bandung

Train operational worthiness must be guaranteed. Therefore, performing investigation and optimization of the dynamic response of the train is needed. One of the available investigation methods that can be used is a test method which utilizes a roller rig. A roller rig that is used in a train dynamic characteristics test requires a control strategy for controlling each of the roller speeds independently. Thus, small amount of speed differences can be maintained. Based on that situation, this study aims to build a test rig and develop a control strategy for the roller rig driving motor which is a BLDC Motor. The process of making the test rig consisted of determining DRnO, design process, manufacturing the components, and tests. The design process resulted in control system spesification that can be grouped into mechanical system and electrical system. Mechanical system includes motor mounting system, braking system, and sensor mounting system. Besides the test rig, a new control strategy was developed by combining PI control and an predictor function. The new control strategy is tested, and its dynamic characteristics are compared with the PI and feedforward control strategy. The new control strategy is capable of performing setpoint tracking, and has fast dynamic response shown by the rise time reducing capability, as much as 69% lower than PI control, while showing no overshoot. Besides that, it has a disturbance rejection capability without generating any steady state error as in PI and feedforward control.