科创中国

原文链接：万方

• 摘要：

  The methods of improving the dynamic performance of high speed on/off solenoid valve include increasing the magnetic force of armature and the slew rate of coil current, decreasing the mass and stroke of moving parts. The increase of magnetic force usually leads to the decrease of current slew rate, which could increase the delay time of the dynamic response of solenoid valve. Using a high voltage to drive coil can solve this contradiction, but a high driving voltage can also lead to more cost and a decrease of safety and reliability. In this paper, a new scheme of parallel coils is investigated, in which the single coil of solenoid is replaced by parallel coils with same ampere turns. Based on the mathematic model of high speed solenoid valve, the theoretical formula for the delay time of solenoid valve is deduced. Both the theoretical analysis and the dynamic simulation show that the effect of dividing a single coil into N parallel sub-coils is close to that of driving the single coil with N times of the original driving voltage as far as the delay time of solenoid valve is concerned. A specific test bench is designed to measure the dynamic performance of high speed on/off solenoid valve. The experimental results also prove that both the delay time and switching time of the solenoid valves can be decreased greatly by adopting the parallel coil scheme. This research presents a simple and practical method to improve the dynamic performance of high speed on/off solenoid valve.

• 关键词：

  high speed solenoid valve parallel coils dynamic performance delay time

• 作者单位：

  The State Key Lab of Fluid Power Transmission and Control, Zhejiang University, Hangzhou 310027, China

• 基金项目：

  Science Fund for Creative Research Groups of National Natural Science Foundation of China(Grant51221004)%National Natural Science Foundation of China(Grant50805127)%Fundamental Research Funds for the Central Universities of China(Grant2011QNA4002)

• 来源期刊：

  中国机械工程学报

• 年，卷(期)：

  201427004