ABSTRACT

With rapidly developing of traffic and transport as well as rising of vehicles in our country, The number of double-front-axle steering automobile is also increasing. When the car is driving at high speed, its stability is deeply effected by front wheel alignment parameters. Among them, the toe-in value and camber value have the largest effection. When the toe-in value cann’t match the camber angle, it will induce the wheel supporting side direction force, consequently come into being slid phenomenon. It’ll induce traffic accidents and cause tires’ abnormal wearing.
During the automobile’s driving period, front-wheel slid value impact directly to the correction or not of front wheel alignment parameters adjustment. Car slid tester is used to check the amount and direction of wheels’ slid value. To ensure the correct matching between wheel toe-in and wheel camber angle. Auto front through the sideslip tester, because the board by moving subject only to the skateboard wheel and support the friction between the return of spring tension and skateboard, while the constraints between tires and skateboarding has enough lateral displacement. So, before the comprehensive function outward exert bundles and, if the freedom front wheel rolling direction deviating from the practice driving direction, as long as the lateral force generated more than skateboard and roller of friction and spring between elastic restoring force, the sum of the front wheel rolling forward while will drive skateboarding lateral spreads. This designation introduces Side skateboard steel Linear displacement sensor Steel racks guide base and so on.
Key words: Automobile; Slid;Moritering;Ddisplacement sensor;Gui