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WEBER GmbH was asked to certify the full functionality of the switch module under various environmental conditions.
In addition to pure environmental simulations, such as climate testing, a primary part of this task was to create an actuator for the switch module that could implement both electronic communications via LIN bus as well as the mechanical actuation of the individual switches.
Preliminary investigations finally led to a pneumatic actuation that had to work at temperatures of –40 °C to +85 °C. Alternatively, motorised actuation using stepper motors was also investigated.
Further highlights of the project:
This test could be used to initiate design improvements to the switch modules. Pneumatic actuation is less elegant and mechanically more difficult than a motor, but the results it provides can be reproduced at any time.