Abstract
In order to reduce the lateral force between wheel and rail during curve negotiation of rail vehicle, various kind of steered truck have been developed and investigated. This paper deals with two types of actively steered truck, in which the control is based on wheelset behaviour. One type of the trucks has actuators connected with longitudinal stiffness in series, the other does in parallel. The running characteristics such as curving performance, stability and control energy are compared by numerical simulation between the two types. As for the running stability, which tends to get worse with the steering control, it is suggested that the use of low-pass filter for the measurement data can be effective for the improvement. And the running safety is also investigated considering the fail of actuators.
