PRELIMINARY STUDY OF TILTING CONTROL SYSTEM IMPLEMENTATION ON RAILWAY VEHICLES

• Main Author: Bayu Ramadhan, Priyo
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/68921
• Institution: Institut Teknologi Bandung

Train is one of the most widely used transportation modes in Indonesia. While passing through a curve, the speed of a train needs to be reduced in order to limit the amount of lateral force experienced. Large lateral force can cause large lateral acceleration experienced by the passangers, thereby reducing ride comfort. Tilting train is an alternative solution to reduce curving force experienced by passangers without reducing train speed at curve. To produce appropriate tilting angle, control system need to be designed properly. Therefore, a preliminary study on the implementation of nulling strategy on tilting train was conducted. This study aims to see the nulling control parameters affecting the performance of the control system, that is measured by the lateral acceleration response of the train body. The tilting train model used in this study has been developed by PPTI KA laboratory FTMD ITB. Control system was modelled as block diagram in Simulink software and consisted of input, nulling configuration, low pass filter, controller, and output from the controller. Control system model was then implemented in tilting train simulation by Universal Mechanism software. The control system took feedback signals from train. The output was resulted in the form of control action, adjusting tilting angle through an actuator. The control system was tested with various curving scenarios to evaluate its performance by observing the carbody lateral acceleration response. The effect of compensation factor, low pass filter, and controller were also tested. The results showed that the control system has a fairly slow response, therefore the reduction of lateral acceleration is not optimal on the curve transition. By increasing integral gain, the control system response is faster but more unstable. Addition of derivative gain can lower the oscillation. Higher compensation factor will increase passenger comfort in the curve transition calculated by PCT factor, but also increase oscillation in the control system. Setting lower cut off frequency of the low pass filter generally make the system more stable.