Non-equal-height two-dimensional chamfered halbach permanent magnet array for planar motors
A permanent magnet array and planar motor technology, which is applied in the direction of magnetic circuit, electromechanical device, electrical components, etc., can solve the problems of poor sine of the air gap flux density, poor thrust stability of the motor, complex structure of permanent magnet array, etc., and achieve fundamental wave occupation High efficiency, reduced thrust fluctuation, and simple structure
Active Publication Date: 2022-05-13
HARBIN INST OF TECH
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Problems solved by technology
[0006] The present invention aims to solve the problem that the structure of the permanent magnet array in the existing planar motor is complicated, the sine of the air gap magnetic density is poor, and the thrust stability of the motor is poor, and it provides a non-equal height two-dimensional chamfered Halbach permanent Magnetic array
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specific Embodiment approach 1
[0026] Specific implementation mode one: the following combination Figure 1 to Figure 5 Describe this embodiment, the non-equal-height two-dimensional chamfered Halbach permanent magnet array suitable for planar motors described in this embodiment includes a main permanent magnet 100 and an auxiliary permanent magnet 200,
[0027] The main permanent magnets 100 and the auxiliary permanent magnets 200 are connected to each other and arranged to form an approximately square permanent magnet array; wherein the main permanent magnets 100 are arranged at equal intervals along the diagonal direction of the square, forming multiple rows along a diagonal direction and Multiple rows along another diagonal direction; the cross section of the main permanent magnet 100 along the horizontal direction is a square; the magnetization direction of the main permanent magnet 100 is perpendicular to the square, and the magnetization direction of adjacent main permanent magnets 100 is opposite;
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The invention relates to a non-equal-height two-dimensional chamfered Halbach permanent magnet array suitable for planar motors, belonging to the technical field of motors. The invention aims to solve the problem that the structure of the permanent magnet array in the existing planar motor is complex, the sinusoidal property of the air gap magnetic density is poor, and the thrust stability of the motor is poor. It includes main permanent magnets and auxiliary permanent magnets, the main permanent magnets and auxiliary permanent magnets are connected to each other and arranged to form an approximately square permanent magnet array; the main permanent magnets are arranged at equal intervals along the diagonal direction of the square to form a Multiple rows and multiple columns along another diagonal direction; the cross section of the main permanent magnet along the horizontal direction is a square; the magnetization direction of the main permanent magnet is perpendicular to the square, and the magnetization direction of adjacent main permanent magnets is opposite; Auxiliary permanent magnets are arranged between adjacent main permanent magnets, and four sides of each main permanent magnet are connected with an auxiliary permanent magnet; the auxiliary permanent magnets are magnetized in parallel along the horizontal direction. The invention is used in a planar motor and helps the motor to obtain more excellent performance.
Description
technical field [0001] The invention relates to a non-equal-height two-dimensional chamfered Halbach permanent magnet array suitable for a planar motor, belonging to the technical field of motors. Background technique [0002] Modern precision and ultra-precision processing equipment has an urgent need for high-response, high-speed, high-precision two-dimensional planar drive devices, such as precision machining, semiconductor electronic chip production, mechanical loading and unloading, manufacturing automated instruments and even robot drives. The traditional two-dimensional planar driving device is usually superimposed by two sets of linear motion conversion mechanisms driven by rotary motors. Due to the complex structure of the linear motion conversion device (generally a screw-nut mechanism), the transmission accuracy and speed are subject to certain constraints, and there are a series of problems such as friction, backlash, deformation, etc., making it difficult for th...
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IPC IPC(8): H02K41/03H02K1/06
CPCH02K41/031H02K1/06H02K2201/03
Inventor 张鲁寇宝泉韦坚张赫
Owner HARBIN INST OF TECH