WO2024000699A1 - 直驱系统 - Google Patents

直驱系统 Download PDF

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Publication number
WO2024000699A1
WO2024000699A1 PCT/CN2022/106916 CN2022106916W WO2024000699A1 WO 2024000699 A1 WO2024000699 A1 WO 2024000699A1 CN 2022106916 W CN2022106916 W CN 2022106916W WO 2024000699 A1 WO2024000699 A1 WO 2024000699A1
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WO
WIPO (PCT)
Prior art keywords
windings
drive system
direct drive
base
magnetic
Prior art date
Application number
PCT/CN2022/106916
Other languages
English (en)
French (fr)
Inventor
史卫领
秦彧
郭顺
陈敏
Original Assignee
瑞声光电科技(常州)有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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Application filed by 瑞声光电科技(常州)有限公司 filed Critical 瑞声光电科技(常州)有限公司
Publication of WO2024000699A1 publication Critical patent/WO2024000699A1/zh

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
    • H02K11/21—Devices for sensing speed or position, or actuated thereby
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/46—Fastening of windings on the stator or rotor structure
    • H02K3/50—Fastening of winding heads, equalising connectors, or connections thereto
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/46—Fastening of windings on the stator or rotor structure
    • H02K3/52—Fastening salient pole windings or connections thereto
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
    • H02K41/02—Linear motors; Sectional motors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
    • H02K41/02—Linear motors; Sectional motors
    • H02K41/03—Synchronous motors; Motors moving step by step; Reluctance motors

Definitions

  • the present invention relates to the technical field of drive systems, and in particular, to a direct drive system.
  • the motor of the direct drive system usually includes an interacting stator assembly and a mover assembly.
  • the stator assembly includes an iron core and a coil arranged on the iron core.
  • the coil arrangement in the prior art is to be arranged closely adjacent to each other. This kind of The arrangement will increase the amount of coils and iron cores, and increase the material cost. Secondly, the larger amount of coils will also increase the amount of heat generated, resulting in increased energy consumption and further reducing the operating efficiency of the direct drive system.
  • the present invention aims to solve at least one of the technical problems existing in the prior art and provide a direct drive system.
  • the invention provides a direct drive system, which includes: a base and a sliding seat spaced apart from the base.
  • the base is provided with a stator assembly, and the sliding base is provided with a mover assembly;
  • the mover assembly includes a first magnet conductor and a plurality of magnets arranged on the first magnet conductor;
  • the stator assembly includes at least one set of second magnetic conductors and multiple sets of windings spaced on the second magnetic conductors.
  • the windings are disposed opposite to the magnetic steel, and the magnetic field generated by at least one set of windings covers At least one of the magnets generates electromagnetic thrust with the magnet to drive the sliding seat to move in the sliding direction.
  • the spacing length between two adjacent groups of windings is less than the total length of the plurality of magnets.
  • the stator assembly includes a set of second magnet conductors, and the second magnet conductors are continuously arranged along the sliding direction.
  • the stator assembly includes a plurality of sets of second magnet conductors, the plurality of sets of second magnet conductors are spaced apart along the sliding direction, and the second magnet conductors are arranged in one-to-one correspondence with the windings.
  • each group of second magnet conductive bodies is provided with auxiliary teeth at at least one of its two ends along its length direction.
  • the second magnetic conductive body includes a magnetic conductive base plate and a plurality of teeth provided on the magnetic conductive base plate;
  • Each group of the windings includes a plurality of coils, and the coils are sleeved on the tooth portion.
  • the base includes a top plate, and the second magnetic conductor and the multiple sets of windings are sequentially arranged on the inner surface of the top plate;
  • the first magnetic conductor and the plurality of magnetic steels are arranged in sequence on the side of the sliding seat facing the top plate.
  • the base further includes a bottom plate spaced apart from the top plate, and guide rails are provided on the inner surface of the bottom plate;
  • At least one sliding block is provided on one side of the sliding seat facing the bottom plate, and the sliding seat moves on the guide rail through the sliding block.
  • the orthographic projection of the guide rail on the base along the sliding direction falls outside the base.
  • the base further includes a side plate connected between the top plate and the bottom plate, and the side plate is provided with at least one first position feedback member along the sliding direction;
  • a second position feedback member is provided on a side of the slide seat facing the side plate, and the second position feedback member is spaced apart from the at least one first position feedback member.
  • the present invention arranges multiple groups of windings at intervals, and cooperatively energizes the coils in each group of windings to drive the mover assembly with magnets to operate, which can effectively reduce the amount of coils, reduce material costs, and further reduce heat generation. Reduce energy consumption to improve the operating efficiency of direct drive systems.
  • Figure 1 is a schematic structural diagram of a direct drive system according to an embodiment of the present invention
  • Figure 2 is a schematic structural diagram of a direct drive system according to another embodiment of the present invention.
  • Figure 3 is a cross-sectional view of a direct drive system according to another embodiment of the present invention.
  • Figure 4 is a schematic structural diagram of a mover unit according to another embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a stator unit according to another embodiment of the present invention.
  • Figure 6 is a schematic structural diagram of a stator assembly according to another embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of a stator unit according to another embodiment of the present invention.
  • Figure 8 is a schematic structural diagram of a stator assembly according to another embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of a stator unit according to another embodiment of the present invention.
  • Figure 10 is a schematic structural diagram of a stator assembly according to another embodiment of the present invention.
  • the terms “mounted”, “connected”, “connected” or “fixed” and similar words are not limited to physical or mechanical connections, but may include An electrical connection, whether direct or indirect through an intermediate medium, can be the internal connection between two components or the interaction between two components.
  • the terms “center”, “lengthwise”, “crosswise”, “length”, “width”, “thickness”, “top”, “bottom”, “front”, “back”, “left”, “right” , “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only used to indicate relative Positional relationship, when the absolute position of the described object changes, the relative positional relationship may also change accordingly.
  • the present invention provides a direct drive system 100, which includes: a base 110 and a sliding base 120 spaced apart from the base 110.
  • the sliding base 120 is provided with a mover assembly 130.
  • the base 110 A stator assembly 140 is provided on the top;
  • the mover assembly 130 includes a first magnet conductor 131 and a plurality of magnets 132 arranged on the first magnet conductor 131;
  • the stator assembly 140 includes at least one set of second magnet conductors 141 and spaced apart magnets 132.
  • Multiple sets of windings 142 on the two conductive magnets 141 are arranged opposite to the magnetic steel 132, and the magnetic field generated by at least one set of windings 142 covers at least one magnetic steel 132 to generate electromagnetic thrust with the magnetic steel 132 to drive the slider 120 to slide along the direction movement.
  • the windings in the stator assembly are arranged into multiple groups, and the multiple groups of windings are arranged at intervals.
  • the working principle of the direct drive system in this embodiment is as follows: when the winding on the stator assembly is supplied with an appropriate current, the winding generates a traveling magnetic field, the magnets in the mover assembly induce a magnetic field, and a gap magnetic field is generated between the magnets and the windings. , and then generate a driving force to drive the mover assembly with magnets and the slide seat to move in the sliding direction.
  • the spacing length between each group of windings along the sliding direction of the slider should be smaller than the length of the mover assembly.
  • the length of the first magnet conductor or the total length of multiple magnets requires that the length of the first magnet conductor and the magnet steel be long enough to ensure that the winding and the magnet steel generate an air gap magnetic field at any time, so that the mover assembly When passing through different windings, they are driven by different windings.
  • the stator assembly 140 includes multiple sets of second magnet conductors 141 , which are spaced apart along the sliding direction.
  • the second magnet conductors 141 are connected to the windings 142 .
  • One corresponding arrangement, that is, each set of windings is arranged on the second magnetically conductive body at intervals.
  • the amount of the magnetic conductor can be further reduced, thereby reducing material costs.
  • each group of second magnet conductors 141 is provided with auxiliary teeth 141 c at at least one of its two ends along its length direction. That is to say, auxiliary teeth are provided at one end or both ends of the magnetic conductive substrate in each group of second magnetic conductive bodies.
  • each group of second magnet conductors 141 is provided with auxiliary teeth 141c at both ends along its length direction.
  • auxiliary teeth are provided at the end of the second magnet conductor to reduce thrust fluctuations.
  • the stator assembly 140 includes a set of second magnet conductors 141 , the set of second magnet conductors 141 is continuously arranged along the sliding direction, and multiple sets of windings 142 are spaced apart from each other. On the secondary magnet 141.
  • the second magnetic conductor is continuously arranged, and the windings are arranged at intervals on the second magnetic conductor. Compared with the second magnetic conductor and the windings being arranged at synchronous intervals, the thrust fluctuation can be further reduced.
  • the second magnetic permeable body 141 includes a magnetic permeable base plate 141a and a plurality of teeth 141b provided on the magnetic permeable base plate 141a.
  • Each set of windings 142 includes a plurality of coils, and each coil sleeve Provided on each tooth portion 141b.
  • the coil is also connected to an external power supply, and the coil is energized through an external drive control system connected to the coil.
  • the coil When current is passed through the coil, the coil generates a traveling magnetic field, and the magnet induces a magnetic field. Between the magnet and the coil An air gap magnetic field is generated between the magnets and the coil, and a thrust is generated between the magnet and the coil to drive the slide to move in the sliding direction.
  • the base 110 includes a top plate 111 , and a second magnetic conductor 141 and multiple sets of windings 142 are sequentially disposed on the inner surface of the top plate 111 , that is, the second magnetic conductor is disposed on the top plate along the sliding direction.
  • multiple sets of windings are arranged on the second magnetic conductor along the sliding direction.
  • the first magnetic conductor 131 and the plurality of magnets 132 are sequentially arranged on the side of the sliding seat 120 facing the top plate 111 , that is, the first magnetic conductive body is arranged on the sliding seat along the sliding direction, and the plurality of magnetic steels are arranged on the first guide along the sliding direction.
  • multiple magnets are spaced apart and arranged opposite to multiple sets of windings.
  • multiple sets of windings are arranged on the second magnet conductive body at equal intervals, and a plurality of magnet steels are arranged on the first magnet conductive body at equal intervals.
  • the magnet steel in this embodiment can be installed on the first magnet conductor first, and then the whole body is installed on the sliding seat.
  • the base 110 also includes a bottom plate 112 spaced apart from the top plate 111.
  • the inner surface of the bottom plate 112 is provided with a guide rail 150 along the sliding direction; the slide base 120 is provided toward one side of the bottom plate 112.
  • this embodiment does not specifically limit the structure and number of the slide blocks, and they can be set according to the structure of the guide rail.
  • two slide blocks can be symmetrically provided below the slide seat.
  • the length of the existing direct drive system is fixed, in different applications, it is necessary to select a direct drive system with a specific length. Its length is limited, and its flexibility and versatility are poor. Therefore, it can be adjusted according to actual conditions.
  • the length of the direct drive system needs to be adjusted, that is, the stator unit can be modularly designed and multiple stator units can be spliced together.
  • the orthographic projection of the guide rail 150 on the base 110 along the sliding direction falls on the outside of the base 110, so that when the base is spliced with the stator assembly and other structures, it is the first to contact
  • the first part is the guide rail, which can ensure the smooth connection of the guide rail.
  • the distance between other parts is slightly larger, so there will be no situation where the guide rail is not completely in contact and other parts come into contact first, which reduces the difficulty of assembly and maintenance of the system.
  • the base 110 also includes a side plate 113 connected between the top plate 111 and the bottom plate 112 .
  • the side plate 113 is provided with at least one first position feedback member along the sliding direction of the slide base 120 . 160;
  • a second position feedback member 170 is provided on the side of the sliding seat 120 facing the side plate 113.
  • the second position feedback member 170 is spaced apart from at least one first position feedback member 160.
  • a plurality of installation grooves are provided at intervals on the side plate, and the first position feedback member is provided in the corresponding installation grooves.
  • the first position feedback component may be a scale
  • the second position feedback component may be a scale read head
  • the second position feedback member of this embodiment moves synchronously on the sliding seat.
  • the first position feedback member will sense the position information on the second position feedback member and move the mover assembly and The position information of the slide is transmitted to the external drive control system to realize drive control of the mover assembly.
  • this embodiment does not specifically limit the specific structure of the sliding seat. It can be composed of multiple substructures or can be an overall structure.
  • the sliding seat 120 includes a first plate body 122 that is spaced apart from the top plate 111 .
  • the first magnetic conductor 131 and a plurality of magnets 132 are disposed on the first plate body 122 toward the top plate 111
  • the slider 121 is disposed on the side of the first plate body 122 facing the bottom plate 112
  • the second position feedback member 170 is disposed on the side of the first plate body 122 facing the side plate 113 .
  • the slide base 120 also includes an extension plate 123 extending upward from the first plate body 122 to above the top plate 111 , and a third plate connecting the extension plate 123 and disposed opposite to the first plate body 122 .
  • the second plate body 124 that is, the second plate body 124 is disposed above the top plate 111.
  • the base, the stator assembly and the guide rail provided thereon form a stator unit
  • the slide seat and the mover assembly provided thereon form a mover unit
  • the stator assembly interacts with the mover assembly to drive the The slide moves on the guide rail.
  • stator assembly of this embodiment includes various shapes such as straight lines, arcs, sectors, etc., which are not specifically limited.
  • one mover assembly can be provided on each stator assembly.
  • one stator assembly can also be equipped with two, three or more mover assemblies.
  • the present invention provides a direct drive system, which has the following beneficial effects compared with the prior art: by arranging multiple groups of windings and second magnet conductors at intervals, each group of windings is cooperatively energized to drive a mover with magnets. Component movement can reduce the amount of stator components such as coils and reduce costs. The coil spacing can reduce heat generation, further reduce energy consumption, and improve the operating efficiency of the direct drive system.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Electromagnetism (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Linear Motors (AREA)

Abstract

本发明提供一种直驱系统，属于驱动系统技术领域。本发明的直驱系统包括：基座以及与基座间隔设置的滑座，基座上设置有定子组件，滑座上设置有动子组件；动子组件包括第一导磁体以及设置在第一导磁体上的多个磁钢；定子组件包括至少一组第二导磁体以及间隔设置在第二导磁体上的多组绕组，绕组与所述磁钢相对设置，且至少一组绕组产生的磁场覆盖至少一个磁钢，以与磁钢产生电磁推力驱使滑座沿滑动方向运动。本发明将多组绕组间隔排布，通过对各组绕组中的线圈协作通电，以驱动带有磁钢的动子组件运行，可以有效降低线圈的用量，降低物料成本，以及进一步降低发热量，降低直驱系统的能耗，以提高直驱系统的运行效率。

Description

直驱系统 技术领域
本发明涉及驱动系统技术领域，尤其涉及一种直驱系统。
 背景技术
直驱系统的电机通常包括相互作用的定子组件和动子组件，其中，定子组件包括铁芯与设置在铁芯上的线圈，现有技术中的线圈排布方式为紧密挨接设置，这种排布方式会造成线圈及铁芯的用量增加，物料成本增高，其次，较大的线圈用量还会增加发热量，造成能耗增加，进一步降低直驱系统的运行效率。
 技术问题
因此，有必要提供一种新直驱系统以解决上述技术问题。
 技术解决方案
本发明旨在至少解决现有技术中存在的技术问题之一，提供一种直驱系统。
本发明提供一种直驱系统，包括：基座以及与所述基座间隔设置的滑座，所述基座上设置有定子组件，所述滑座上设置有动子组件；
所述动子组件包括第一导磁体以及设置在所述第一导磁体上的多个磁钢；
所述定子组件包括至少一组第二导磁体以及间隔设置在所述第二导磁体上的多组绕组，所述绕组与所述磁钢相对设置，且至少一组所述绕组产生的磁场覆盖至少一个所述磁钢，以与所述磁钢产生电磁推力驱使所述滑座沿滑动方向运动。
可选的，相邻两组所述绕组之间的间隔长度小于所述多个磁钢的总长度。
可选的，所述定子组件包括一组第二导磁体，所述第二导磁体沿所述滑动方向连续设置。
可选的，所述定子组件包括多组第二导磁体，所述多组第二导磁体沿所述滑动方向间隔设置，所述第二导磁体与所述绕组一一对应设置。
可选的，每组所述第二导磁体沿其长度方向上的两端中的至少一端设置有辅助齿。
可选的，所述第二导磁体包括导磁基板以及设置在所述导磁基板上的多个齿部；
每组所述绕组包括多个线圈，所述线圈套设在所述齿部上。
可选的，所述基座包括顶板，所述第二导磁体与所述多组绕组依次设置在所述顶板的内表面；
所述第一导磁体与所述多个磁钢依次设置在所述滑座朝向所述顶板的一侧。
可选的，所述基座还包括与所述顶板间隔设置的底板，所述底板的内表面上设置有导轨；
所述滑座朝向所述底板的一侧设置有可滑动的至少一个滑块，所述滑座通过所述滑块在所述导轨上运动。
可选的，所述导轨在所述基座上沿所述滑动方向的正投影落在所述基座外侧。
可选的，所述基座还包括连接于所述顶板与所述底板之间的侧板，所述侧板沿所述滑动方向设置有至少一个第一位置反馈件；
所述滑座朝向所述侧板的一侧设置有第二位置反馈件，所述第二位置反馈件与所述至少一个第一位置反馈件相对间隔设置。
 有益效果
本发明将多组绕组间隔排布，通过对各组绕组中的线圈协作通电，以驱动带有磁钢的动子组件运行，可以有效降低线圈的用量，降低物料成本，以及进一步降低发热量，降低能耗，以提高直驱系统的运行效率。
 附图说明
图1为本发明一实施例的直驱系统的结构示意图；
图2为本发明另一实施例的直驱系统的结构示意图；
图3为本发明另一实施例的直驱系统的剖面图；
图4为本发明另一实施例的动子单元的结构示意图；
图5为本发明另一实施例的定子单元的结构示意图；
图6为本发明另一实施例的定子组件的结构示意图；
图7为本发明另一实施例的定子单元的结构示意图；
图8为本发明另一实施例的定子组件的结构示意图；
图9为本发明另一实施例的定子单元的结构示意图；
图10为本发明另一实施例的定子组件的结构示意图。
 本发明的最佳实施方式
为使本领域技术人员更好地理解本发明的技术方案，下面结合附图和具体实施方式对本发明作进一步详细描述。
在发明的一些描述中，除非另有明确的规定和限定，术语“安装”、“连接”、“相连”或者“固定”等类似的词语并非限定于物理的或者机械的连接，而是可以包括电性的连接，不管是直接的还是通过中间媒体间接连接，可以是两个元件内部的连通或者两个元件的互相作用关系。以及，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”、等指示的方位或位置关系为基于附图所示的方位或位置关系，仅用于表示相对位置关系，当被描述对象的绝对位置改变后，则该相对位置关系也可能相应地改变。
如图1至图10所示，本发明提供一种直驱系统100，包括：基座110以及与基座110间隔设置的滑座120，滑座120上设置有动子组件130，基座110上设置有定子组件140；动子组件130包括第一导磁体131以及设置在第一导磁体131上的多个磁钢132；定子组件140包括至少一组第二导磁体141以及间隔设置在第二导磁体141上的多组绕组142，绕组142与磁钢132相对设置，且至少一组绕组142产生的磁场覆盖至少一个磁钢132，以与磁钢132产生电磁推力驱使滑座120沿滑动方向运动。
本实施例将定子组件中的绕组设置为多组，且将多组绕组间隔排布，通过对各组绕组中的线圈协作通电，可以有效降低线圈的用量，降低物料成本，以及进一步降低发热量，降低能耗，提高直驱系统的运行效率。
本实施例直驱系统的工作原理如下：当定子组件上的绕组通入合适的电流时，绕组产生行波磁场，动子组件中的磁钢感应出磁场，磁钢、绕组之间产生间隙磁场，进而产生推动力以驱动带有磁钢的动子组件以及滑座沿滑动方向运动。
应当理解的是，为了使动子组件中的磁钢感应出磁场，磁钢与绕组之间产生气隙磁场，沿滑座的滑动方向上，各组绕组之间的间隔长度应当小于动子组件上第一导磁体的长度或多个磁钢的总长度，即需要第一导磁体和磁钢的长度足够长，以确保任意时刻都有绕组与磁钢产生气隙磁场，以使得动子组件经过不同的绕组时被不同的绕组驱动运行。
在一些优选实施例中，如图5至图8所示，定子组件140包括多组第二导磁体141，多组第二导磁体141沿滑动方向间隔设置，第二导磁体141与绕组142一一对应设置，即每组绕组设置在间隔的第二导磁体上。
本实施例通过将第二导磁体与多组绕组同步间隔设置，可以进一步降低导磁体的用量，以降低物料成本。
作为进一步的优选方案，如图7和图8所示，每组第二导磁体141沿其长度方向上的两端中的至少一端设置有辅助齿141c。也就是说，在每组第二导磁体中导磁基板的其中一个端部或者两端设置有辅助齿。
作为更进一步的优选方案，如图7和图8所示，每组第二导磁体141沿其长度方向上的两端设置有辅助齿141c。
本实施例通过在第二导磁体端部设置辅助齿可以起到降低推力波动的作用。
在另一些优选实施例中，如图9和图10所示，定子组件140包括一组第二导磁体141，该组第二导磁体141沿滑动方向连续设置，多组绕组142间隔设置在第二导磁体141上。
本实施例的第二导磁体连续排布，绕组间隔设置在第二导磁体上，相比第二导磁体与绕组同步间隔设置，可以进一步降低推力波动。
进一步的，如图5至图10所示，第二导磁体141包括导磁基板141a以及设置在导磁基板141a上的多个齿部141b，每组绕组142包括多个线圈，每个线圈套设在每个齿部141b上。
应当理解的是，线圈还与外部电源连接，并通过与线圈连接的外部驱控系统控制线圈通电，当线圈通入电流时，线圈产生行波磁场，磁钢感应出磁场，磁钢、线圈之间产生气隙磁场，磁钢和线圈之间产生推力以驱动滑座沿滑动方向进行运动。
更进一步的，如图1至图4所示，基座110包括顶板111，第二导磁体141与多组绕组142依次设置在顶板111的内表面，即第二导磁体沿滑动方向设置在顶板的内表面，多组绕组沿滑动方向设置在第二导磁体上。第一导磁体131与多个磁钢132依次设置在滑座120朝向顶板111的一侧，即第一导磁体沿滑动方向设置在滑座上，多个磁钢沿滑动方向设置在第一导磁体上，且多个磁钢间隔分布，与多组绕组相对设置。
作为进一步的优选方案，多组绕组等间隔设置在第二导磁体上，多个磁钢等间隔设置在第一导磁体上。
需要说明的是，本实施例的磁钢可以先安装在第一导磁体上，再将整体安装在滑座上。
更进一步的，如图1至图4所示，基座110还包括与顶板111间隔设置的底板112，底板112的内表面沿滑动方向设置有导轨150；滑座120朝向底板112的一侧设置有可滑动的至少一个滑块121，滑座120通过滑块121在导轨150上运动。
需要说明的是，本实施例对于滑块的结构及数量不做具体限定，可以根据导轨的结构进行具体设置，例如，当导轨两侧设置有滑动部时，可以在滑座的下方对称设置两个滑块或四个滑块，使滑块在滑动部上滑动。
需要说明的是，由于现有直驱系统的长度为固定规格，在不同的应用场合，需要选择针对性长度的直驱系统，其长度存在限制，使用灵活性及通用性差，因此，可以根据实际需要对直驱系统的长度进行调节，即可以对定子单元进行模块化设计，将多个定子单元进行拼接。
作为进一步的优选方案，如图1和图4所示，导轨150在基座110上沿滑动方向的正投影落在基座110外侧，以使得基座与定子组件等结构拼接时，最先接触的是导轨，可以保证导轨的衔接流畅性，其它部分间距略大，不会出现导轨未完全接触，其它部分先接触上的情况，降低系统的装配难度与维修难度。
更进一步的，如图1至图4所示，基座110还包括连接于顶板111与底板112之间的侧板113，侧板113沿滑座120滑动方向设置有至少一个第一位置反馈件160；滑座120朝向侧板113的一侧设置有第二位置反馈件170，第二位置反馈件170与至少一个第一位置反馈件160相对间隔设置。
作为进一步的优选方案，侧板上间隔设置有多个安装槽，第一位置反馈件设置在对应的安装槽内。
作为更进一步的优选方案，第一位置反馈件可采用栅尺，第二位置反馈件可采用栅尺读头。
本实施例的第二位置反馈件同步在滑座上运动，当滑座经过第一位置反馈件时，第一位置反馈件会感应到第二位置反馈件上的位置信息，将动子组件以及滑座的位置信息传递给外部的驱控系统，以实现对动子组件进行驱动控制。
需要说明的是，本实施例对滑座的具体结构不做具体限定，可以由多个子结构组合而成，也可以是一个整体结构。
具体地，如图1至图4所示，滑座120包括与顶板111相对间隔设置的第一板体122，第一导磁体131与多个磁钢132设置在第一板体122朝向顶板111的一侧，滑块121设置在第一板体122朝向底板112的一侧，第二位置反馈件170设置在第一板体122朝向侧板113的一侧。
进一步的，请继续参考图1至图4，滑座120还包括自第一板体122向上延伸至顶板111上方的延伸板123，以及连接延伸板123且与第一板体122相对设置的第二板体124，即第二板体124设置在顶板111上方，定子组件与动子组件产生相对推力时，以驱动滑座与基座发生相对滑动。
需要说明的是，本实施例的基座及其上设置的定子组件、导轨形成定子单元，滑座及其上设置的动子组件形成动子单元，通过定子组件与动子组件相互作用以驱使滑座在导轨上运动。
进一步需要说明的是，本实施例的定子组件包含直线、圆弧、扇形等多种形状，对此不做具体限定。
仍需要说明的是，在每个定子组件上可设置一个动子组件，当然，一个定子组件上也可配套有两个、三个或多个动子组件。
本发明提供一种直驱系统，与现有技术相比具有以下有益效果：通过将多组绕组和第二导磁体间隔排布，使各组绕组协作通电，以驱动带有磁钢的动子组件运动，可以减少线圈等定子组件的用量，降低成本，且通过线圈间隔设置减少发热量，进一步降低能耗，提高直驱系统的运行效率。
可以理解的是，以上实施方式仅仅是为了说明本发明的原理而采用的示例性实施方式，然而本发明并不局限于此。对于本领域内的普通技术人员而言，在不脱离本发明的精神和实质的情况下，可以做出各种变型和改进，这些变型和改进也视为本发明的保护范围。
 
 

Claims (10)

  1. 一种直驱系统，其特征在于，包括：基座以及与所述基座间隔设置的滑座，所述基座上设置有定子组件，所述滑座上设置有动子组件；
    所述动子组件包括第一导磁体以及设置在所述第一导磁体上的多个磁钢；
    所述定子组件包括至少一组第二导磁体以及间隔设置在所述第二导磁体上的多组绕组，所述绕组与所述磁钢相对设置，且至少一组所述绕组产生的磁场覆盖至少一个所述磁钢，以与所述磁钢产生电磁推力驱使所述滑座沿滑动方向运动。
  2. 根据权利要求1所述的直驱系统，其特征在于，相邻两组所述绕组之间的间隔长度小于所述多个磁钢的总长度。
  3. 根据权利要求1所述的直驱系统，其特征在于，所述定子组件包括一组第二导磁体，所述第二导磁体沿所述滑动方向连续设置。
  4. 根据权利要求1所述的直驱系统，其特征在于，所述定子组件包括多组第二导磁体，所述多组第二导磁体沿所述滑动方向间隔设置，所述第二导磁体与所述绕组一一对应设置。
  5. 根据权利要求4所述的直驱系统，其特征在于，每组所述第二导磁体沿其长度方向上的两端中的至少一端设置有辅助齿。
  6. 根据权利要求3或4所述的直驱系统，其特征在于，所述第二导磁体包括导磁基板以及设置在所述导磁基板上的多个齿部；
    每组所述绕组包括多个线圈，所述线圈套设在所述齿部上。
  7. 根据权利要求1至5任一项所述的直驱系统，其特征在于，所述基座包括顶板，所述第二导磁体与所述多组绕组依次设置在所述顶板的内表面；
    所述第一导磁体与所述多个磁钢依次设置在所述滑座朝向所述顶板的一侧。 
  8. 根据权利要求7所述的直驱系统，其特征在于，所述基座还包括与所述顶板间隔设置的底板，所述底板的内表面上设置有导轨；
    所述滑座朝向所述底板的一侧设置有可滑动的至少一个滑块，所述滑座通过所述滑块在所述导轨上运动。
  9. 根据权利要求8所述的直驱系统，其特征在于，所述导轨在所述基座上沿所述滑动方向的正投影落在所述基座外侧。
  10. 根据权利要求9所述的直驱系统，其特征在于，所述基座还包括连接于所述顶板与所述底板之间的侧板，所述侧板沿所述滑动方向设置有至少一个第一位置反馈件；
    所述滑座朝向所述侧板的一侧设置有第二位置反馈件，所述第二位置反馈件与所述至少一个第一位置反馈件相对间隔设置。
     
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JP2012039680A (ja) * 2010-08-03 2012-02-23 Toshiba Mach Co Ltd リニアモータ及びリニアモータ装置
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