Virtual prototyping of a car turn-signal switch using haptic feedback
Tóm tắt
The present work describes the virtual prototyping procedure of car turn-signal switches using a dedicated haptic feedback system. Although turn-signal switches have mechanisms with simple geometry, simulating the “feeling” during its operation is still a challenge. In order to allow ergonomics designers to directly assess the comfort of operation, a dedicated haptic system was developed for reproducing the force feedback that would characterize a real turn-signal switch. For the accurate haptic feedback generation and rendering purpose, a detailed computer-aided design model of the switch was developed together with a multibody simulation. For the design purpose a novel method for the synthesis of the cam mechanism was also developed, starting from an imposed force profile that was previously validated on the haptic device, for which the cam geometry is determined. Thus, the proposed approach enables the designer to also design the “feel” of the switch, and directly manufacture a good model, simplifying the usual iterative process necessary to implement the desired force profile. Finally, an example of virtual prototyping of a turn-signal switch is presented demonstrating the usability of the proposed method and the haptic system.
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