A position detection method for a linear rotation two-degree-of-freedom permanent magnet motor
A permanent magnet motor and detection method technology, which is applied to electromechanical devices, magnetic circuits, electrical components, etc., can solve the problems of complex subsequent logic judgment processing, increase the complexity of the control system, and it is difficult to realize the miniaturization of the motor. Simple installation and reduced volume
Active Publication Date: 2018-06-15
SOUTHEAST UNIV
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[0003] Position detection is the basis for three kinds of motion of linear rotation two-degree-of-freedom permanent magnet motors. Although various structural types of linear rotation two-degree-of-freedom permanent magnet motors have been proposed continuously, such as spiral, combined and integrated structures, etc., but However, its mover position detection device often uses the method of separate detection of two degrees of freedom, which requires complex follow-up logic judgment processing, which increases the complexity of the control system, and it is difficult to realize the miniaturization of the overall structure of the motor
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[0024] An example of the present invention is figure 1 As shown, this embodiment is an integrated linear rotary permanent magnet motor structure, the motor includes a stator 1, a winding 2, a permanent magnet 3, a non-magnetic spacer ring 5, a mover yoke 6, and the stator 1 is in phase with the mover yoke 6 Several Hall sensors 4 are arranged on the adjacent surface. The structure is 6 poles and 9 slots along the circumference, and the structure is 8 poles and 9 slots along the axial direction. The number of Hall sensors in the circumferential direction is 6, and the number of Hall sensors in the axial direction is 8. The installation position of the Hall sensor and the relative position of the permanent magnet are as follows: figure 2 shown. The 48 permanent magnets are divided into 18 pieces in the circumferential direction and 32 pieces in the axial direction. The Hall sensor position signal when the motor rotates is shown in Table 1; the Hall sensor position signal wh...
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The present invention discloses a position detection method of a permanent magnetism motor of straight-line rotation two-degree of freedom. The method comprises: the permanent magnet of permanent magnetism motor of straight-line rotation two-degree of freedom are divided into a plurality of small blocks on the circumference and the axial direction. A plurality of sensors arranged on the stator adjacent to one surface of the mover yoke are configured to detect the movement of the mover on the straight line and rotation directions to realize the position detection of the straight-line rotation permanent magnetism motor. Through adoption of a partitioning permanent magnet and a linearity hall sensor, the position detection method of a permanent magnetism motor of straight-line rotation two-degree of freedom realizes the position detection of two-degree of freedom three motion modes of the straight-line rotation permanent magnetism motor, and is compact in structure and small in size; and moreover, through adoption of a mode of a sensor embedding the stator, the position detection method of the permanent magnetism motor of straight-line rotation two-degree of freedom is simple in installation, low in cost and easy to realize.
Description
technical field [0001] The invention relates to the technical field of linear rotation two-degree-of-freedom permanent magnet motors, in particular to a position detection method for linear rotation two-degree-of-freedom permanent magnet motors. Background technique [0002] Motors play a pivotal role in the fields of industry, national defense and life. With the increase in the complexity of industrial drive systems and the improvement of drive precision requirements, the application of multi-degree-of-freedom drives is becoming more and more extensive, such as human joints, robot arms, high-end machine tools, ship propulsion, artillery turntables, office automation, and multi-coordinate machining , satellite tracking antenna, electric gyroscope, etc., especially some precision devices have more and more urgent requirements for multi-degree-of-freedom drives. Linear rotation two-degree-of-freedom motion permanent magnet motor is a two-degree-of-freedom motor that can reali...
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IPC IPC(8): H02K11/215H02K41/06H02K1/27
CPCH02K1/278H02K41/06H02K2213/03
Inventor徐磊林明耀付兴贺张亚光
OwnerSOUTHEAST UNIV