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In a railway vehicle, a WSP valve is a key component for the safety of the vehicle and the supplementation of brake operation in impaired track conditions. The WSP controller detects sliding of each wheelset and reduces pneumatic brake force of the sliding wheelset. Due to the working of the WSP system, the excessive sliding or a locking of wheels is prevented. On the WSP system operating, the WSP...
This paper presents a scheme and logic of a synchronized move generation of two hydraulic cylinders for a tilting train using a Delta RMC controller. A high speed sampling rate of 1 ms is implemented for accurate motion control. For a systematic design and maintenance, the controller is grouped into three modules; a CPU module including control logic and generating commands of the proportional valve...
A hydraulic actuation system for a tilting train is usually composed of independent actuators to remove position errors due to bulk modulus of the hydraulic system. For the hydraulic control system using two independent cylinders, this paper presents the modeling of the hydraulic system, control logic, and simulation results of the hydraulic control system. Simulation results for motion responses...
This paper presents a real-time simulation for the brake system including ASCU hardware component of the Korean tilting train. The dynamic model of the rolling stock is implemented using a dSPACE board and Simulink programs. Dump valve signals are fed back to dSPACE board and wheel speeds are generated by the dynamic model using the feedback signals. The validity of this real-time simulation module...
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