先导式电磁开关阀的控制方法优化

踏板行程模拟装置作为集成制动系统(IBS)的关键部件之一,其作用是为驾驶员提供良好的踏板感觉,保证制动的安全性。该装置核心部件——先导式电磁开关阀的性能直接关系到踏板感觉的效果,对其进行深入的研究,建立先导式电磁开关阀不同子系统的数学模型,并运用AMESim软件搭建多场耦合模型并进行仿真,分析了环境温度、驱动电压对电磁阀性能的影响。通过仿真与实验分析发现,传统控制方法存在电磁阀发热量较大的问题,这极大地限制了电磁阀的使用。针对该问题,提出一种变电压控制方法,实验结果表明,新控制方法可以保证电磁阀长时间正常工作,有效提高电磁阀的工作能力。

Optimization of Control Method for Pilot Solenoid On-off Valve

As one of the key components of the integrated braking system (IBS), the pedal stroke simulator is designed to provide the driver with a good feeling, which ensures braking safety. The pilot solenoid on-off valve is the core component of the pedal stroke simulator. And its performance is directly related to the effect of pedal feeling, so it needs to be studied deeply. In this paper, the mathematical models of different subsystems of pilot solenoid on-off valve are established. A multi-fields coupling model is built by AMESim. And the influence of ambient temperature and driving voltage on the performance of solenoid valve is analyzed. Through simulation and experimental analysis, the traditional control method of solenoid valve has the problem with excessive heat, which limits the use of solenoid valve. To solve this problem, an optimized variable voltage control method is proposed in this paper. Experimental results show that the novel method can ensure the solenoid valve to work normally for a long time, improving its working performance significantly.