4-poster

4-poster

A 4-poster or four poster system is specifically designed for the testing of vehicles (cars, trucks). These systems consist of 4 hydraulic actuators on top of which the wheels of the vehicle are placed. Movements of the actuators simulate the road surface and forces exerted by the road on the wheels. Durign the research phase of a vehicle a 4-poster system is used to test newly designed suspension systems and their durability. In production 4-poster systems are usually used to test every vehicle at the end of the production line on squeak and rattle, which is a check to make sure the vehicle doesn't have any loose parts.


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