High-speed electromagnetic actuator dynamic performance calculation method considering eddy current effect
A technology of electromagnetic actuators and calculation methods, applied in the direction of instruments, design optimization/simulation, electrical digital data processing, etc., can solve problems such as the predictive design of high response characteristics of electromagnetic valves, etc.
Active Publication Date: 2021-01-22
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 is described in more detail below in conjunction with accompanying drawing example:
[0040] combine Figure 1-5 , the concrete flow process of the present invention is:
[0041] (1) Divide into zones according to the structure of the electromagnetic actuator, define the inner magnetic pole part as area A, the outer magnetic pole part as area B, the area connecting the inner and outer magnetic poles above the coil winding as area C, and the armature part as area D. Such as figure 1 As shown, the four areas defined above are divided into six slices of equal thickness in the radial direction, and it is assumed that the eddy current in each layer of iron core slices is uniformly distributed, figure 2 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 area A as i R11 and i R16 , while the eddy resistanc...
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The invention aims to provide a high-speed electromagnetic actuator dynamic performance calculation method considering an eddy current effect, which comprises the following steps: dividing an area A into an area A, an area B, an area C and an area D according to the structure of an electromagnetic actuator, defining eddy current and eddy resistance on the area A, the area B, the area C and the area D, defining equivalent current of an air gap part between an iron core and an armature of the electromagnetic actuator as igk, defining the equivalent inductance of the magnetic flux leakage parts of the areas A-D as Lair1-Lair4, calculating the flux linkage between two adjacent thin layers of the areas A-D, calculating the magnetic flux phi of the electromagnetic actuator, calculating the electromagnetic force, solving an armature motion equation of the electromagnetic actuator, outputting a curve that the armature lift changes along with the driving time, and obtaining the opening responsetime and the closing response time of the electromagnetic actuator. According to the invention, accurate prediction of the dynamic performance of different high-speed electromagnetic actuators can berealized, and multi-physics coupling calculation with a mechanical motion field, a hydraulic field and the like can be realized, so that prediction calculation of the high-speed electromagnetic actuators in a hydraulic system is realized 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 can be realized. Although three-dimensional electromagnetic finite element software can be used to carry out the design of electromagnetic actuators, the calculation time is too long, and only the calculation and analysis of the dynamic characteristics of "dry valves" without considering the hydraulic environment cannot be accurately predicted. Operating characteristics within the "hydraulic environment" of the system. The invention patent "A Control Method for Reducing Closing Delay of High-speed Switching Solenoid Valve" (authorized announ...
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Login to View More IPC IPC(8): G06F30/20G06F119/14
CPCG06F30/20G06F2119/14
Inventor 赵建辉卢相东
Owner HARBIN ENG UNIV