In order to explore the axial electromagnetic dynamic balance force curve of a scroll compressor under the action of thermal energy, radial clearance, mechanism friction, and other factors in actual working conditions, an axial force exploration method that can automatically approach sections is proposed in this paper. Considering the dynamic response ability of the electromagnetic balance system, an automatic optimization algorithm of the partition number was proposed to find the optimal partition number in order to achieve the optimal tracking effect. An experimental platform was built to test the effect of the segmented tracking method on calibrating the deviation between the theoretical axial force curve and the real curve. The results show that the curve construction method proposed in this paper has convergence. This method can automatically and accurately construct the axial balance force curve required by the electromagnetic dynamic balance. Through the automatic optimization algorithm, the standard error (RMSE) between the target curve and the theoretical curve was reduced from 290 to 22.6, and the number of partitions with the lowest standard error was 20. The results provide a useful reference for the accurate, automatic, and efficient exploration of the actual axial sealing force of the scroll compressor.

It can be said that the core of car safety is the car brake and its control system. Along with the development of the car, the car brake and its control system has undergone many changes, from rubber friction braking solely relying on manpower to the later pneumatic brake system, hydraulic brake system and so on. Among them, the hydraulic brake system is the most widely used. With the continuous advancement of technology, electric drive machines are widely used in vehicles. Research on electric power assisted hydraulic brake systems has become a hot research topic in recent years, as autonomous driving and driverless. Essential and key components are the inevitable trend and the best solution for the next generation of automotive braking systems. This study describes a control unit for a motor-driven brake actuator that analyzes its role, structure, and advantages in an electric-assisted hydraulic brake system.

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