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Abstract:An optimal braking system for Dual Mode is a complex product of vast number of multivariate, interdependent parameters that encompass on-guideway and off-guideway operation as well as normal and emergency braking. Details of, and interrelations among on-guideway and off-guideway operations will be considered. The influences on the braking system of the digital or analog inputs from the command and control system will be analyzed. Included also will be a study of the interplay of headway, velocity, acceleration and jerk values, within passenger comfort limits, and the role of such interactions on the sizing and design of the brake mechanism, whether of drum, disc, skid or other mechanical type: or of traction motor, LIM or other electrical type. The actuation system, air or hydraulic, and its time constants are also factors. The impact of anti-skid devices and their servo aspects, upon the braking system will be presented. The problems and payoffs of energy dissipation as direct heat, as heat from electrical resistive elements, or as electric power from a regenerative system will also be included as parameters of significance in a conceptual n-dimensional matrix.
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