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Linear motor thrust fluctuation suppression device and fluctuation suppression method

A technology of thrust fluctuations and linear motors, applied in the direction of electromechanical devices, electric components, electrical components, etc., can solve problems such as system failure and system force control performance deterioration

Active Publication Date: 2019-08-16
SHENZHEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Once there is a problem with the controller, such as a problem with the information transmission of a certain link (delay, data loss, etc.), the force control performance of the overall system will deteriorate; if a physical connection failure occurs in a certain motion unit, the system may fail. fail

Method used

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  • Linear motor thrust fluctuation suppression device and fluctuation suppression method
  • Linear motor thrust fluctuation suppression device and fluctuation suppression method
  • Linear motor thrust fluctuation suppression device and fluctuation suppression method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] figure 2 It is a schematic diagram of a linear motor thrust fluctuation suppressing device with three movers adopted by the present invention. figure 2 The linear motor integrates three identical movers of the switched reluctance principle linear motor. The device includes a mover 11, a mover 12, and a mover 13, and the three movers have the same mechanical and electrical parameters. The mover 11 , the mover 12 , and the mover 13 slide on the base 18 through the slider 15 , the slider 16 and the slider 17 respectively, and the mover slides on the stator 14 through the guide rail. Both ends of the mover 11 are flexibly connected to the mover 12 and the mover 13 through springs 21 and 22 respectively. The spring parameters of spring 21 and spring 22 are identical. Such as figure 2 As shown, the ideal resultant force is located at the position of the mover 11 relative to the zero point 20 .

[0028] Each mover is equipped with a position sensor (not shown) that wor...

Embodiment 2

[0050] The only difference between Embodiment 2 and Embodiment 1 is that, according to the needs of the actual situation, the three movers can also have different mechanical and / or electrical parameters. For example, the second mover and the third mover are used as force compensation Therefore, movers with smaller thrust can be selected. The second mover and the third mover may be identical and different from the first mover. It can also be that the three movers are not the same. By selecting the second mover and the third mover suitable for force compensation, the force compensation is more accurate and the thrust output is more precise.

Embodiment 3

[0052] The only difference between the third embodiment and the first embodiment is that the spring parameters of the spring 21 and the spring 22 are different, so that the spring coefficients of the spring 21 and the spring 22 are different or the displacement corresponding to the limit point of the spring deformation is different. In this embodiment, according to the difference of the spring parameters of the springs, the ratio of the mover 1 , the mover 2 and the mover 3 to respond to the total force command is allocated. Since the force on the mover 11 of the three-mover system includes the force generated by the deformation of the spring 21 and the spring 22, the method of allocating the proportion of the total output task in this embodiment fully considers that the deformation of the spring is within a certain range. Under the premise of recovery, the range of force that each mover may provide can make the operation of the three mover system more reliable, and set the out...

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Abstract

The invention discloses a thrust fluctuation suppression device and fluctuation suppression method of a linear motor. The device comprises three rotors, wherein the three rotors are flexibly connectedby springs, so that the output thrust range is expanded, thrust adjustment also can be performed from two directions, and higher-accuracy thrust fluctuation suppression is achieved. Moreover, the three rotors can employ a master control unit to do concentrated control, each rotor also can employ an independent controller and a sensor, so that a distributed control method is employed; and in totaloutput tasks of total output instructions, the outputs respectively born by the three rotors can be same, also can be different in output allocation priorities and also can be different according tospring parameters of the used springs. By the device, the targets of high-efficiency, rapid and high-accuracy output of the whole system can be achieved.

Description

technical field [0001] The invention relates to a linear motor thrust fluctuation suppression device and a fluctuation suppression method thereof, belonging to the technical field of linear motors. Background technique [0002] There are many occasions in the industry that require precise force control, such as parts transportation in the production line, robotic arm grabbing, etc. Compared with the traditional hydraulic and pneumatic principles, since the linear motor can directly output the thrust without the need for a rotary-linear mechanical conversion device such as a rotating motor and a screw, the control precision of the thrust of the linear motor is higher. Using linear motors to directly realize thrust has the advantages of stable output and high precision. [0003] However, the conventional single linear motor also has disadvantages. [0004] First, there is a maximum limit to the output thrust. Limited by the fixed output power of the linear motor, the output...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K41/03H02K11/215H02K11/22
CPCH02K11/215H02K11/22H02K41/03
Inventor 潘剑飞张宙洪岳刘云邱丽
Owner SHENZHEN UNIV