A dynamic performance calculation method of high-speed electromagnetic actuator considering eddy current effect
A technology of electromagnetic actuator and calculation method, which is applied in the direction of instrument, design optimization/simulation, electrical digital data processing, etc., and can solve the problems of predicting design that cannot have high response characteristics of solenoid valve, etc.
Active Publication Date: 2022-08-02
HARBIN ENG UNIV
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However, because this method needs to test the electromagnetic force of the solenoid valve sample in advance, the proposed method cannot truly realize the predictive design of the high response characteristics of the solenoid valve.
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[0039] The present invention will be described in more detail below in conjunction with the accompanying drawings:
[0040] combine Figure 1-5 , the concrete flow of the present invention is:
[0041] (1) According to the structure of the electromagnetic actuator, the division is carried out, and the inner magnetic pole part is defined as the A area, the outer magnetic pole part is the B area, the area above the coil winding connecting the inner and outer magnetic poles is the C area, and the armature part is the D area. like figure 1 As shown, the four regions defined above are divided into six layers of equal thickness slices in the radial direction, and it is assumed that the eddy current in each layer of iron core slices is uniformly distributed, figure 2 It is the structure diagram of the equivalent magnetic circuit of the electromagnetic actuator constructed after division.
[0042] (2) Define the eddy currents of the first layer and the sixth layer on the A area as...
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The object of the present invention is to provide a dynamic performance calculation method of a high-speed electromagnetic actuator considering eddy current effects, comprising the steps of: partitioning A-D according to the structure of the electromagnetic actuator, and defining A, B, C, and D areas The upper eddy current and eddy resistance define the equivalent current of the air gap between the electromagnetic actuator core and the armature as i gk , define the equivalent inductance of the magnetic leakage part of the A-D region as L air1 ~L air4 , calculate the flux linkage between the two adjacent thin layers in the A-D area, calculate the magnetic flux φ of the electromagnetic actuator, calculate the electromagnetic force, solve the armature motion equation of the electromagnetic actuator, and output the curve of the armature lift changing with the driving time to obtain Open response time and close response time of electromagnetic actuators. The present invention can realize accurate prediction of the dynamic performance of different high-speed electromagnetic actuators, and the method can realize multi-physics coupling calculation with mechanical motion field, hydraulic field, etc., so as to realize the prediction calculation of high-speed electromagnetic actuators in hydraulic system in a real sense.
Description
technical field [0001] The invention relates to an electromagnetic actuator, in particular to a method for calculating the performance of the electromagnetic actuator. Background technique [0002] The high-speed electromagnetic actuator is the core component of the hydraulic system. By controlling the high-speed electromagnetic actuator to control the cutting or connection of the oil circuit, the established hydraulic system motion law is realized. Although three-dimensional electromagnetic finite element software can be used to design electromagnetic actuators, the calculation time is too long, and only the dynamic characteristics of "dry valve" can be calculated and analyzed without considering the hydraulic environment, which cannot accurately predict the hydraulic performance of high-speed electromagnetic actuators. The operating characteristics within the "hydraulic environment" of the system. The invention patent "A Control Method for Reducing the Closing Delay of Hi...
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IPC IPC(8): G06F30/20G06F119/14
CPCG06F30/20G06F2119/14
Inventor 赵建辉卢相东
Owner HARBIN ENG UNIV