Abstract: A heating system of automobile dashboards was designed on the basis of the technological procedure of outside mold decoration, which was mainly composed of heating plates, guide rails and ball screws. The model of heating system was determined by calculating the work load of guide rails and ball screws. A temperature control system was also designed, and the transfer function of overall characteristics of the heating system was obtained by calculating thyristor regulation characteristics, quartz heater amplification coefficient and quartz lamp time constant. The transfer function was also simulated by a Matlab software, and the analysis results indicated that the heating system had a high stability. The heating process for thin films was also simulated by an Abaqus software. The analysis results indicated that the temperature of the heating tile on film was in the range of 393.4~398.5 K, the heating temperature was uniformly only with about 10.6 % of heat loss.

Key words: automobile dashboard, outside mold decoration, heating mechanism, temperature control system, simulation