Single liquid drop support based external magnetic field driven micro rotating platform, driving method and driving apparatus for micro rotating platform

A technology of rotating platform and external magnetic field, applied in electromechanical devices, electric brakes/clutches, permanent magnet clutches/brakes, etc., can solve the problems of difficult installation and miniaturization, and achieve simple control methods, elimination of friction, and easy control. Effect

Inactive Publication Date: 2016-06-22
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention aims to solve the problems that the motor transmission mechanism of the micro platform driven by micro bearings and micro motors will produce friction, the device is complicated, it is difficult to realize accurate and reliable assembly of the system, and it is difficult to further miniaturize. Supported external magnetic field drives micro-rotating platform, driving method of the platform, and driving device of the platform

Method used

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  • Single liquid drop support based external magnetic field driven micro rotating platform, driving method and driving apparatus for micro rotating platform
  • Single liquid drop support based external magnetic field driven micro rotating platform, driving method and driving apparatus for micro rotating platform
  • Single liquid drop support based external magnetic field driven micro rotating platform, driving method and driving apparatus for micro rotating platform

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specific Embodiment approach 1

[0023] Specific implementation mode one: refer to figure 1 Describe this embodiment in detail. The micro-rotating platform driven by an external magnetic field supported by a single droplet described in this embodiment includes: a magnetic platform 1, a droplet 2 and a droplet base 3;

[0024] The droplet 2 is located on the droplet substrate 3, and the magnetic platform 1 floats horizontally on the upper surface of the droplet 2.

[0025] An external magnetic field-driven micro-rotating platform based on single droplet support described in this embodiment, wherein the magnetic platform 1 is made of magnetic materials and is magnetic.

[0026] In this embodiment, the capillary force formed between the droplet 2 and the magnetic platform 1 is used to make the magnetic platform 1 adhere horizontally to the upper surface of the droplet 2 . Since the magnetic platform 1 is supported by a single droplet, compared with the existing platform supported by tiny bearing components, the...

specific Embodiment approach 2

[0027] Specific embodiment 2: This embodiment is a further description of the external magnetic field-driven micro-rotating platform based on single droplet support described in specific embodiment 1. In this embodiment, the magnetic platform 1 is a square magnetic sheet, and the material is Spring steel with a thickness of 0.02mm and a length and width of 1mm.

specific Embodiment approach 3

[0028] Specific embodiment 3: This embodiment is a further description of the external magnetic field-driven micro-rotating platform supported by a single droplet described in specific embodiment 1 or 2. In this embodiment, the volume of droplet 2 is 0.3 μL. Droplet 2 is deionized water.

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Abstract

A micro-rotating platform driven by an external magnetic field supported by a single droplet, a driving method for the platform, and a driving device for the platform relate to the field of micro-rotating platforms. The present invention aims to solve the problems that the motor transmission mechanism of the micro platform driven by micro bearings and micro motors will produce friction, the device is complicated, it is difficult to realize accurate and reliable assembly of the system, and it is difficult to further miniaturize. The invention utilizes the capillary force between the droplet and the micro-platform to make the micro-platform float on the surface of the droplet. Three pairs of orthogonally placed Helmholtz coils are used to generate a uniform rotating magnetic field to realize the rotating motion of the micro-platform. By changing the rotation frequency of the rotating magnetic field, the rotation speed of the micro-rotation platform can be changed. By changing the rotation axis of the rotating magnetic field, the rotation axis of the micro-rotation platform can be changed. The motor transmission mechanism is simplified, the friction between solids is eliminated, the rotation compliance of the platform can be effectively improved, and the platform is further miniaturized.

Description

technical field [0001] The invention belongs to the field of micro rotating platform and its driving device. Background technique [0002] Precision micro-rotating platforms have broad application prospects in the fields of micro-electromechanical systems, optics, and biomedicine. Taking the field of micro-electromechanical systems as an example, the micro-rotating platform can be used for positioning and dynamic testing of micro-devices, and micro-manipulation tools can also be placed on it to increase the flexibility of micro-manipulation. At present, small rotating platforms are mainly supported by tiny bearing components and driven by tiny motors. However, using a motor to drive the platform will inevitably generate mechanical friction at the transmission mechanism. As the size of the platform continues to decrease, the effect of mechanical friction becomes more prominent. In addition, for micro-miniature platforms, due to the complexity of the device, it is difficult...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K49/10
CPCH02K49/102
Inventor 王乐锋黄本松翟文贺荣伟彬孙立宁
Owner HARBIN INST OF TECH
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