The automatic clutch of the vehicle can automatically separate and combine the operation according to the driving conditions of the vehicle and the intention of the driver to achieve semi-automatic shifting. This kind of clutch control performance directly affects the longitudinal comfort and fuel economy of the vehicle. Therefore, the study of the control problem of the electronically controlled clutch has important industrial application value. In general, the clutch control must solve two problems: First, the combination law of the clutch; Second, the actuator follows the combination law. Therefore, the entire controller is divided into an upper controller and a lower controller. Shen Shuiwen discussed the upper controller to solve the problem of the coupling law of the clutch. Due to the nonlinearity, time lag, external interference, and parameter perturbation of the system itself, it is difficult for the lower controller to complete the tracking of the clutch engagement law. In this paper, a sliding mode variable structure controller is designed and the chattering is reduced by using the switching function lead compensation method. Motor Driven Clutch Actuator Modeling Brushless DC motor position servo system, which includes two controllers of inner ring and outer ring. The inner ring system is a pulse width modulated power inverter controlled by sinusoidal current; the outer ring is variable structure. Controller for generating the control signal input inner ring. In the figure, x is the reference displacement of the clutch release bearing, which represents the ideal combination law of the clutch. It is proposed by the upper controller, namely the clutch controller; the DC brushless servo motor is a three-phase permanent magnet synchronous motor. It is worth mentioning that the diaphragm spring plays an important and special role in the clutch. Due to its special structure, it acts as a separate lever and a compression spring. At the same time, its special non-linear characteristics can reliably transmit the torque after the driven disc friction plate is worn, and make the pedal easy to operate. Water Soluble Embroidery,Sequin Embroidery Fabric,Bridal Lace Fabric,Embroidery Lace Dress Fabric Shaoxing MingFang Textile Co., Ltd , https://www.printings-fabrics.com