附 录A 外文文献The structural characteristics of non-independent suspension on both sides of the wheel is an integral frame connected by the wheels together with the adoption of flexible suspension bridge hanging in the frame or body of the following. Non-independent suspension has a simple structure, low cost, high strength, easy maintenance, driving changes in the small front wheel alignment advantages, but because of its comfort and handling stability are poor, largely in the modern car is no longer in use more used in trucks and large passenger on. Independent suspension on each side of the wheel is individually through the elastic suspension is hanging in the frame or body below. The advantages are: light weight, reduced body shocks, and improve adhesion of the wheels on the ground; available small soft spring stiffness, improve vehicle comfort; can reduce engine position, car center of gravity is reduced, thereby improve the cars driving stability; about beating the wheel alone, independent of each other, can reduce the bodys tilt and vibration. However, there are complex independent suspension, high cost and maintenance problem of inaccessibility. Modern cars are mostly used independent suspension, according to the different structure, independent wishbone suspension can be divided into longitudinal arm, multi-link, candle and McPherson suspension and so on. Arm Suspension means the horizontal plane in the car wheel independent suspension swing, according to the number of how many arm is divided into wishbone and single-arm suspension. Single-Arm has a simple structure, roll center height, with a strong anti-roll capability advantages. But with the increased speed of modern vehicles, roll center is too high will cause the wheel tread beats changes, tire wear increased, and in a sharp turn around the wheel vertical force when the transfer is too large, resulting in increased rear extraversion. Reduce rear-wheel cornering stiffness, resulting in a serious condition high-speed drift. Single-wishbone independent suspension in the rear suspension on a multi-application, but can not meet the requirements of high speed, the current limited application. Multi-link suspension are combined by the root pole position change control of the wheel suspension. Multi-link can wheel around the axis line with the vehicle at an angle within the swing axis is horizontal arm and vertical arm of the compromise, choose the right arm with the motor axis into a vertical line of the angle, can be varying degrees of access to wishbone suspension with the advantages of vertical arm, which can meet different performance requirements. Multi-link suspension of the main advantages are: the wheel tread and beating little change before the beam, both cars are in driving, braking status can be carried out by the driver of the Yi Tu smooth transition to its shortcomings in the automotive when the phenomenon of high-speed shaft swing. Mainly in the FR-link drive mode, and around the back axle of the integration (and the middle of the differential rigid connection) for use where, in the past to use more leaf spring support body, and now from the increased driving comfort considerations, multi-use Link back to say that the swing arm type and style, and use a good coil spring ride. Link in the left side of a pair, divided into upper and lower tie rod, as the lateral force transmission (car drivers) body, usually with a horizontal thrust bar again with the composition of the five-link form. Connect one end of the body lateral thrust rod, one end of the connecting axle, its purpose is to prevent the axle (or body) horizontal traverse. When the axle moves up and down because of the rough, the lateral thrust rod will be connected to contacts with the body axis, an art movement arc, through the General Assembly if the swing angle made between the axles and the body produces significant lateral relative motion, and the lower arm principle similar to the horizontal thrust rod longer than should be designed to reduce the swing angle. Link suspension and axle forming an integrated whole, the mass of the spring below, and not the independence movement around the wheel, so to face bumpy road vehicle impact energy generated by relatively large, poor ride comfort. So there arm methods, this approach is the only fixed-axle differential among left and right half shaft in the differential and universal joints located between the wheel and the center of its swing, used between the wheel and the frame Y-connection under the arm. Y at one end and a separate rigid wheel, the other two endpoints and the frame to connect and form a rotation axis. According to the rotation axis is parallel with the axle, swing arm type suspension is divided into full drag-type arm and half drag-style swing arm, parallel to the whole drag-style, non-parallel type is called semi-drag. Because comfort is the car one of the most important performance, and comfort with the