带单稳态永磁机构的自保持型电磁阀电磁系统特性分析-电气工程专业论文.docx

河北工业大学硕士学位论文 河北工业大学硕士学位论文 带单稳态永磁机构的自保持型电磁阀电磁系统特性分析 带单稳态永磁机构的自保持型电磁阀电磁系统特性分析 带单稳态永磁机构的自保持型电磁阀 电磁系统特性分析 摘 要 电磁阀是一种利用电磁力完成打开和关闭动作的自动阀门。带单稳态永磁机构的自 保持型电磁阀具有动作灵敏、性能可靠、体积小等优点，通常用作气体或者液体流量控 制阀,被广泛应用在很多自动控制系统中。电磁系统作为自保持型电磁阀的重要组成部 分，其性能的好坏直接影响着整个电磁阀工作质量的高低，因此对其进行性能分析及结 构优化具有重要的理论意义和实用价值。 本课题对某型号自保持型电磁阀进行研究，主要工作有以下几个方面： 首先，运用 ANSYS 软件中的参数化设计语言 APDL，对带单稳态永磁机构的自保持型 电磁阀的电磁系统进行了三维有限元建模和仿真分析。计算了额定电压下的静态电磁吸 力和线圈电感，分析了其静态特性，并研究了电磁吸力和反力的配合情况。 其次，搭建电路，对电磁阀的吸合过程进行了实验，用示波器得到了其吸合时线圈 中的电流与时间的关系，并将实验结果与仿真结果进行比较，验证模型的正确性。 最后，以永磁体高度、线圈匝数、静铁心高度和内套高度为设计变量对自保持型电 磁阀进行了优化设计，从而找到了电磁阀电磁机构的最优参数，增大了初始位置的吸力， 提高了系统的可靠性。 关键词：自保持型电磁阀，单稳态永磁机构，有限元分析，静态特性 i PAGE PAGE iv CHARACTERISTIC ANALYSIS OF ELECTROMAGNETIC SYSTEM IN SELF-HOLDING TYPE SOLENOID VALVE WITH SINGLE STABLE PERMANENT MAGNETIC ACTUATOR ABSTRACT The solenoid valve is a kind of automatic valve which can complete the opening and closing operation by electromagnetic force. The self-holding type solenoid valve with single stable permanent magnetic actuator has the advantages of small size, sensitive and reliable performance, so it’s widely used in automatic control system as gas or liquid flow control valve. As an important part of self-holding type solenoid valve, the performance of electromagnetic system directly affects the level of working quality of the entire electromagnetic valve, so its performance analysis and structural optimization has important theoretical significance and practical value. In this paper, a particular model self-holding type solenoid valve is studied by experiment and simulation methods. The main tasks are as follows: Primarily, a 3-D finite element model of the electromagnetic system in the solenoid valve was established by the APDL language in ANSYS. Then, static electromagnetic force acting on the moving core and the coil inductance was calculated at rated voltage. Moreover, the static characteristics was analyzed, and the coordination between static electromagnetic force and reaction force was studied. Secondly,