(5) Active suspension system
Active suspension system is a new type of suspension system developed in recent ten years and controlled by computer. It brings together the technical knowledge of mechanics and electronics, and is a relatively complex high-tech device. For example, the French Citroen Santilla with an active suspension system is installed. The center of the suspension system of the car is a microcomputer. The five sensors on the suspension system transmit the vehicle speed, the front wheel braking pressure, the speed of stepping on the accelerator pedal, and the speed to the microcomputer respectively. Data such as amplitude and frequency in the vertical direction of the vehicle body, steering wheel angle and steering speed. The computer continuously receives this data and compares it with pre-set thresholds to select the corresponding suspension system state. At the same time, the microcomputer independently controls the actuators on each wheel, and generates twitch by controlling the change of oil pressure in the shock absorber, so that the required suspension system movement can be generated on any wheel at any time. Therefore, the Santeya sedan is equipped with a variety of driving modes to choose from. As long as the driver pulls the "normal" or "sport" button located on the sub-dashboard, the sedan will automatically be set in the best suspension system state, in order to maximize the Good comfort performance.
