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Development and characteristics of bogie unit braking system for EMU

We have been developed the bogie unit braking system. In the braking process of rolling stocks, the equivalent braking force is applied to the all bogies. However, the load applied to the front and rear bogie are different in the actual commercial traveling. In the case, since the different slip situation is occurred in each bogie, it is essential to use the independent anti-slip control per bogie unit in order to reduce the loss of braking force. This paper describes the functions and characteristic of the bogie unit braking system.