Dynamic response detection for solenoid switching valve considering temperature rising of coil

doi:10.3785/j.issn.1008-973X.2025.01.010

Journal of ZheJiang University (Engineering Science)

2025, Vol. 59

Issue (1): 100-108 DOI: 10.3785/j.issn.1008-973X.2025.01.010

Dynamic response detection for solenoid switching valve considering temperature rising of coil

Xianjian HE1,2,3(

),Enguang XU1,2,Jun WANG3,Qi ZHONG1,2,3,*(

),Yanbiao LI1,2,Huayong YANG4

1. College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, China
2. Key Laboratory of Special Purpose Equipment and Advanced Processing Technology, Ministry of Education and Zhejiang Province, Zhejiang University of Technology, Hangzhou 310023, China
3. Zhejiang Haihong Hydraulic Technology Limited Company, Linhai 317000, China
4. State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou 310027, China

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Abstract

A non-destructive identification method for the dynamic performance of the solenoid switching valve (SSV) based on multi-order current derivative characteristics was proposed, aiming at the problem that the moving process of the valve spool inside the SSV was difficult to detect accurately. Considering the effect of the solenoid’s temperature rising on the coil resistance, a mathematical model among the coil inductance derivative, current derivative and spool moving velocity was established. The matching relationship between the current derivative and spool moving state was explored based on the experimental magnetization curve, and the influence of the permeability derivative on the judgment for each switching state of the SSV was analyzed. Theoretical analysis deduced that the convex point and concave point on the opening current derivative curves corresponded to the critical opening moment and fully opened moment of the SSV, and the upper and lower turning points on the closing current derivative curves matched the critical closing moment and fully closed moment of the SSV. Experimental results showed that the maximum measurement deviations of opening time and closing time were 2.40% and 3.08%, respectively, and the maximum measurement deviation of total switching time in a single cycle was 1.49%.

Key words： solenoid switching valve temperature rising characteristic dynamic performance high accuracy detection current derivative

Received: 30 January 2024 Published: 18 January 2025

CLC:

TH 137

Fund: 国家自然科学基金资助项目（52005441）；中国科协青年人才托举工程项目（2022QNRC001）；浙江省自然科学基金资助项目（LQ21E050017）；浙江省“领雁”研发攻关计划项目（2022C01122、2022C01132）；浙江省属高校基本科研业务费资助项目（RF-A2023007）；机械系统与振动国家重点实验室开放基金课题资助项目（MSV202316）；浙江工业大学科技成果转化项目（GYY-ZH-2023075）.

Corresponding Authors: Qi ZHONG E-mail: hexianjian985@163.com;zhongqi@zjut.edu.cn

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	Xianjian HE
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Cite this article:

Xianjian HE,Enguang XU,Jun WANG,Qi ZHONG,Yanbiao LI,Huayong YANG. Dynamic response detection for solenoid switching valve considering temperature rising of coil. Journal of ZheJiang University (Engineering Science), 2025, 59(1): 100-108.

URL:

https://www.zjujournals.com/eng/10.3785/j.issn.1008-973X.2025.01.010 OR https://www.zjujournals.com/eng/Y2025/V59/I1/100

考虑线圈温升的电磁开关阀动态响应特性检测

针对电磁开关阀内部阀芯运动过程难以被精准检测的问题，提出基于电流多阶导数特性的电磁开关阀动态性能无损识别方法. 考虑电磁铁线圈温升对线圈电阻的影响规律，以线圈电感导数、电流导数和阀芯运动速度建立数学模型. 基于磁化曲线探究电流导数与阀芯运动状态的匹配关系，分析磁导率导数对判断电磁开关阀启闭状态的影响规律. 推导得到开启电流导数中的凸/凹点对应电磁开关阀的临界/完全开启时刻，关闭电流导数中的上/下折点匹配电磁开关阀的临界/完全关闭时刻. 试验结果表明，开启和关闭时间最大检测偏差分别为2.40%和3.08%，单周期总启闭时间最大检测偏差为1.49%.

关键词： 电磁开关阀, 温升特性, 动态性能, 高精度检测, 电流导数

Fig.1 Structure of solenoid switching valve

Fig.2 Force analysis of valve spool

Fig.3 Magnetization curve of soft magnetic materials for solenoid switching valve

Fig.4 Magnetic permeability and its derivative curve of soft magnetic materials

Fig.5 Force analysis of solenoid switching valve at different opening and closing moments

Fig.6 Test platform for dynamic performance of solenoid switching valve

Tab.1 Main parameters of test platform

Fig.7 Temperature distribution of solenoid switching valve

Fig.8 Temperature curve of solenoid’s coil

Fig.9 Resistance variation under temperature rising of solenoid’s coil

Fig.10 Dynamic performance of solenoid switching valve in opening stage

Fig.11 Dynamic performance of solenoid switching valve in closing stage

Fig.12 Measurement deviation of solenoid switching valve at different stages under different temperature rise conditions

Fig.13 Displacement detection principle and mass measurement of solenoid switching valve

Fig.14 Continuous switching dynamic performance with 50 Hz driving frequency

Fig.15 Continuous switching dynamic performance with 100 Hz driving frequency


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