液压阀用双稳态电磁换向机构的优化设计

针对液压换向阀中双稳态电磁换向机构采用经验法试算永磁体和迭代校核结构的设计计算繁琐的问题，利用磁路法推导出全局优化模型并得到了Maxwell仿真验证，基于工程实际提出约束条件，利用MATLAB中fmincon函数模块进行求解，经过工程化处理得到较为理想的结果。优化模型使得设计目标更为明确，计算过程更为简洁，一定程度上提升了设计效率。

Optimization Design of Bistable Electromagnetic Reversing Mechanism for Hydraulic Valve

For bistable electromagnetic reversing mechanism in hydraulic directional valve,the calculation is complicated when empirical method is used to calculate permanent magnet and the structure is checked by iteration.To overcome the problem,a global optimization model was deduced by using magnetic circuit method and the simulation verification was conducted by using Maxwell.Constraint condition was put forward based on engineering practice, the fmincon function module in MATLAB was used to solve the ideal results.The optimization model makes the design objective more clear and the calculation process more concise, which improves the design efficiency to some extent.