Multi-degree-of-freedom motion platform and simulation system

Abstract

The invention relates to a multi-degree-of-freedom motion platform and simulation system.The multi-degree-of-freedom motion platform comprises a platform mechanism, a rotation mechanism and a driving mechanism, the platform mechanism comprises a first platform assembly, a second platform assembly and a third platform assembly, and the rotation mechanism comprises a first rotation piece, a second rotation piece and a third rotation piece; the driving mechanism comprises an x-direction driving assembly and a y-direction driving assembly, the x-direction driving assembly is arranged on the first platform assembly and can drive the second platform assembly to move in the x-axis direction, and the y-direction driving assembly is arranged on the second platform assembly and can drive the first rotating part and the second rotating part to move in the y-axis direction; according to the multi-degree-of-freedom motion platform and the simulation system, the third platform assembly can move in the y-axis direction or rotate around the z-axis direction so as to simulate straight movement or turning operation, and the multi-degree-of-freedom motion platform and the simulation system have higher precision and stability compared with a plurality of telescopic rods and have richer motion modes and a wide motion range compared with a three-axis linear module.

Description

Technical Field

[0001] The present application relates to the technical field of motion platforms, and in particular to a multi-degree-of-freedom motion platform and a simulation system. Background Art

[0002] The multi-degree-of-freedom motion platform can be applied to flight simulators, industrial robots, aerospace, automobile driving simulation and other fields, and provide reliable measurement data for product research and development.

[0003] The basic structure of a multi-degree-of-freedom motion platform is mainly composed of an actuator, a moving platform and a fixed platform. When in use, the fixed platform is fixed and does not move. With the help of the telescopic movement of the actuator, the moving platform can complete the movement of multiple degrees of freedom in space. Most of the current actuators are composed of three-axis linear modules or multiple telescopic rods. However, the accuracy and stability of the actuator composed of multiple telescopic rods are limited, and the movement mode and range of the three-axis linear module are limited, resulting in limited use of the current multi-degree-of-freedom motion platform.

[0004] Therefore, there is an urgent need for a multi-degree-of-freedom motion platform that can maintain high precision and high stability, have richer motion modes and a wider range of motion, and can adapt to more diverse application scenarios. Summary of the invention

[0005] Based on this, it is necessary to provide a multi-degree-of-freedom motion platform and simulation system to address the above-mentioned problem of not being able to have richer motion modes and a wider range of motion while maintaining high precision and high stability.

[0006] According to one aspect of the present application, a multi-degree-of-freedom motion platform is provided, comprising:

[0007] A platform mechanism, comprising a first platform component, a second platform component and a third platform component, wherein the second platform component is arranged between the first platform component and the third platform component along the z-axis direction; a first sliding member, a second sliding member and a third sliding member capable of sliding along the x-axis direction are arranged on the side of the second platform component facing the third platform component, and the third sliding member is arranged between the first sliding member and the second sliding member along the x-axis direction;

[0008] A rotating mechanism, comprising a first rotating member, a second rotating member and a third rotating member, wherein the first rotating member is arranged on the first sliding member and can slide on the first sliding member along the y-axis direction, the second rotating member is arranged on the second sliding member and can slide on the second sliding member along the y-axis direction, the third rotating member is arranged on the third sliding member and can slide on the third sliding member along the y-axis direction, and the first rotating member, the second rotating member and the third rotating member are all connected to the third platform assembly;

[0009] The driving mechanism includes an x-axis driving component and a y-axis driving component. The x-axis driving component is arranged on the first platform component and can drive the second platform component to move along the x-axis direction. The y-axis driving component is arranged on the second platform component and can drive the first rotating member and the second rotating member to move along the y-axis direction.

[0010] In one embodiment, the y-axis driving assembly includes a first y-axis driving member and a second y-axis driving member, the first y-axis driving member is arranged on the first sliding member and connected to the first rotating member; the second y-axis driving member is arranged on the second sliding member and connected to the second rotating member.

[0011] In one embodiment, the first y-direction driving member is arranged on the inner side of the first sliding member, and the orthographic projection of the first rotating member on the second platform assembly is located on the first y-direction driving member; the second y-direction driving member is arranged on the inner side of the second sliding member, and the orthographic projection of the second rotating member on the second platform assembly is located on the second y-direction driving member.

[0012] In one embodiment, the x-direction driving assembly includes a first x-direction driving member and a second x-direction driving member, and the first x-direction driving member and the second x-direction driving member are arranged on the first platform assembly at intervals along the y-axis direction.

[0013] In one embodiment, the first x-direction driving member and the second x-direction driving member are respectively connected to two ends of the third sliding member along the y-axis direction.

[0014] In one embodiment, the orthographic projection of the third sliding member on the first platform assembly is located on the first x-direction driving member; and / or the orthographic projection of the third sliding member on the first platform assembly is located on the second x-direction driving member.

[0015] In one of the embodiments, the driving mechanism further includes a z-direction driving assembly, and the z-direction driving assembly is disposed on the third platform assembly.

[0016] In one embodiment, the z-direction driving assembly includes a plurality of z-direction driving members, and the plurality of z-direction driving members are all disposed on a side of the third platform assembly facing away from the second platform assembly.

[0017] In one embodiment, the platform mechanism further includes a mounting member, wherein the mounting member and the third platform component are spaced apart along the z-axis direction, and a plurality of z-direction driving members are all disposed on the mounting member and can drive the mounting member to move along the z-axis direction.

[0018] According to another aspect of the present application, a simulation system is provided, comprising a multi-degree-of-freedom motion platform as described in any one of the above embodiments.

[0019] The above-mentioned multi-degree-of-freedom motion platform and simulation system can drive the second platform component and the third platform component to move along the x-axis direction through the x-axis drive component, and drive the first rotating member and the second rotating member to move in the same or opposite directions along the y-axis direction through the y-axis drive component, so that the third platform component can move along the y-axis direction or rotate around the z-axis direction to simulate straight or turning operations. Compared with the actuator composed of multiple telescopic rods, it has higher precision and stability. Compared with the three-axis linear module, it has richer motion modes and a wide range of motion, and can adapt to more diverse application scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] FIG1 is a schematic diagram of the structure of a multi-degree-of-freedom motion platform according to some embodiments of the present application.

[0021] FIG. 2 is a schematic diagram of the structure of a multi-degree-of-freedom motion platform according to some embodiments of the present application from another perspective.

[0022] FIG. 3 is a schematic diagram of a partial structure of a multi-degree-of-freedom motion platform according to some embodiments of the present application.

[0023] FIG. 4 is a schematic structural diagram of the multi-degree-of-freedom motion platform in FIG. 1 from another perspective.

[0024] Reference numerals:

[0025] 1. Platform mechanism; 11. First platform assembly; 12. Second platform assembly; 13. Third platform assembly; 14. First sliding member; 15. Second sliding member; 16. Third sliding member; 17. Mounting member;

[0026] 2. Rotating mechanism; 21. First rotating member; 22. Second rotating member; 23. Third rotating member;

[0027] 3. Driving mechanism;

[0028] 31. x-direction driving assembly; 311. first x-direction driving member; 312. second x-direction driving member;

[0029] 32, y-direction driving assembly; 321, first y-direction driving member; 322, second y-direction driving member;

[0030] 33. Z-axis drive assembly. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0032] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0033] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0034] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0035] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0036] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0037] The multi-degree-of-freedom motion platform basically adopts the Stewart structure, which is widely used in various training simulators, such as flight simulators, ship simulators, naval helicopter take-off and landing simulation platforms, tank simulators, car driving simulators, train driving simulators, earthquake simulators, as well as dynamic movies, entertainment equipment and other fields, and has great economic value and national defense strategic significance.

[0038] The basic structure of the current multi-degree-of-freedom motion platform is composed of an actuator, a moving platform and a fixed platform. The fixed platform is fixed and does not move. With the help of the telescopic movement of the actuator, the moving platform completes the movement of multiple degrees of freedom in space. The actuators of the existing multi-degree-of-freedom motion platform are mostly composed of a three-axis linear module or a plurality of telescopic rods. However, although the actuator composed of a three-axis linear module and the actuator composed of a plurality of telescopic rods can drive the moving platform to move in the x-direction, y-direction and z-direction, the accuracy and stability of the actuator composed of a plurality of telescopic rods are limited, and the motion mode and range of motion of the actuator composed of a three-axis linear module are limited, resulting in limited use of the current multi-degree-of-freedom motion platform.

[0039] In summary, there is an urgent need for a multi-degree-of-freedom motion platform that can maintain high precision and high stability, has richer motion modes and a wider range of motion, and can adapt to more diverse application scenarios.

[0040] Referring to Figures 1 and 2, an embodiment of the present application provides a multi-degree-of-freedom motion platform, including a platform mechanism 1, a slewing mechanism 2, and a driving mechanism 3. The platform mechanism 1 includes a first platform component 11, a second platform component 12, and a third platform component 13. The driving mechanism 3 is arranged on the first platform component 11 and the second platform component 12 to drive the third platform component 13 to move in the x-direction and the y-direction. The slewing mechanism 2 is arranged on the second platform component 12 to assist the driving mechanism 3 in driving the third platform component 13 to move around the z-direction.

[0041] In the specific configuration, the second platform assembly 12 is arranged between the first platform assembly 11 and the third platform assembly 13 along the z-axis direction. The driving mechanism 3 includes an x-direction driving assembly 31, which is arranged on the first platform assembly 11 and can drive the second platform assembly 12 to move along the x-axis direction, thereby enabling the second platform assembly 12 to drive the third platform assembly 13 to move along the x-axis direction to simulate the straight-moving operation in the x-axis direction.

[0042] The side of the second platform assembly 12 facing the third platform assembly 13 is provided with a first sliding member 14 and a second sliding member 15 that can slide along the x-axis direction, and a third sliding member 16 that is spaced between the first sliding member 14 and the second sliding member 15 along the x-axis direction. Referring to Figures 1 to 3, the rotary mechanism 2 includes a first rotary member 21, a second rotary member 22 and a third rotary member 23. The first rotary member 21 is slidably disposed on the first sliding member 14 along the y-axis direction, the second rotary member 22 is slidably disposed on the second sliding member 15 along the y-axis direction, the third rotary member 23 is spaced between the first rotary member 21 and the second rotary member 22 along the x-axis direction, and is slidably disposed on the third sliding member 16 along the y-axis direction. The first rotary member 21, the second rotary member 22 and the third rotary member 23 are all connected to the side of the third platform assembly 13 facing the second platform assembly 12.

[0043] The driving mechanism 3 further includes a y-direction driving assembly 32, which is disposed on the second platform assembly 12 and can drive the first rotating member 21 and the second rotating member 22 to move along the y-axis direction, so that the first rotating member 21 and the second rotating member 22 can drive the third platform assembly 13 to move along the y-axis direction or rotate around the z-axis direction, so as to simulate a straight-moving operation in the y-axis direction or a turning operation around the z-axis direction.

[0044] It can be understood that when the y-axis driving component 32 drives the first rotating member 21 and the second rotating member 22 to move in the same direction along the y-axis direction, the third platform component 13 can be driven to move along the y-axis direction. When the y-axis driving component 32 drives the first rotating member 21 and the second rotating member 22 to move in opposite directions along the y-axis direction, the first rotating member 21 and the second rotating member 22 can rotate around the z-axis direction during the movement, and the first sliding member 14 and the second sliding member 15 can passively move in the x-axis direction, and the spacing between the first sliding member 14 and the second sliding member 15 along the x-axis direction changes. At this time, the third platform component 13 rotates around the z-axis direction with the third rotating member 23 between the first rotating member 21 and the second rotating member 22 as the axis.

[0045] That is, when the y-axis driving component 32 drives the first rotating member 21 and the second rotating member 22 to move in opposite directions along the y-axis direction, the first rotating member 21 and the second rotating member 22 not only move in the x-axis direction, but also rotate around the z-axis direction, and the third platform component 13, driven by the first rotating member 21 and the second rotating member 22, rotates around the z-axis direction with the third rotating member 23 as the axis.

[0046] In summary, the multi-degree-of-freedom motion platform of the present application can drive the second platform component 12 and the third platform component 13 to move along the x-axis direction through the x-axis drive component 31 to simulate the straight-moving operation in the x-axis direction. The first rotating member 21 and the second rotating member 22 can also be driven by the y-axis drive component 32 to move in the same or opposite directions along the y-axis direction, so that the third platform component 13 can move along the y-axis direction or rotate around the z-axis direction to simulate the straight-moving operation in the y-axis direction or the turning operation around the z-axis direction. The multi-degree-of-freedom motion platform of the present application has higher precision and stability than the actuator composed of multiple telescopic rods, and has richer motion modes and a wider range of motion than the three-axis linear module, and can adapt to more diverse application scenarios.

[0047] Referring to FIG. 2-FIG. 3, in one embodiment, the y-direction driving assembly 32 includes a first y-direction driving member 321 and a second y-direction driving member 322. The first y-direction driving member 321 is disposed on the first sliding member 14 and connected to the first rotating member 21 to drive the first rotating member 21 to move along the y-axis direction. The second y-direction driving member 322 is disposed on the second sliding member 15 and connected to the second rotating member 22 to drive the second rotating member 22 to move along the y-axis direction.

[0048] Specifically, referring to FIGS. 2 to 4 , the first y-direction driving member 321 is disposed on the inner side of the first sliding member 14 to save space. The orthographic projection of the first rotating member 21 on the second platform assembly 12 is located on the first y-direction driving member 321 to ensure that the first sliding member 14 and the first y-direction driving member 321 can stably support the first rotating member 21, thereby ensuring the structural stability among the first sliding member 14, the first y-direction driving member 321 and the first rotating member 21.

[0049] The second y-direction driving member 322 is disposed on the inner side of the second sliding member 15 to save space. The orthographic projection of the second rotating member 22 on the second platform assembly 12 is located on the second y-direction driving member 322 to ensure that the second sliding member 15 and the second y-direction driving member 322 can stably support the second rotating member 22, thereby ensuring the structural stability among the second sliding member 15, the second y-direction driving member 322 and the second rotating member 22.

[0050] More specifically, in the embodiment of the present application, the first sliding member 14, the second sliding member 15 and the third sliding member 16 are all slide rail structures, and the first y-axis driving member 321 and the second y-axis driving member 322 are both motor and lead screw nut matching structures.

[0051] Referring to Figures 1 to 3, in one embodiment, the x-direction driving assembly 31 includes a first x-direction driving member 311 and a second x-direction driving member 312. The first x-direction driving member 311 and the second x-direction driving member 312 are arranged on the first platform assembly 11 at intervals along the y-axis direction to jointly realize the driving of the second platform assembly 12.

[0052] Specifically, the first x-direction driving member 311 and the second x-direction driving member 312 are respectively connected to the two ends of the third sliding member 16 along the y-axis direction, so that the second platform assembly 12 is connected to the first x-direction driving member 311 and the second x-direction driving member 312 through the third sliding member 16. The first x-direction driving member 311 and the second x-direction driving member 312 can drive the third sliding member 16 to move along the x-axis direction, thereby driving the second platform assembly 12 to move along the x-axis direction.

[0053] It can be understood that the above structure can make the orthographic projection of the third sliding member 16 on the first platform assembly 11 be located on the first x-axis driving member 311, and the orthographic projection of the third sliding member 16 on the first platform assembly 11 is located on the second x-axis driving member 312, so that the first x-axis driving member 311 and the second x-axis driving member 312 are easy to connect with the third sliding member 16, and the first x-axis driving member 311 and the second x-axis driving member 312 can also stably support the third sliding member 16, thereby ensuring the structural stability between the first x-axis driving member 311 and the second x-axis driving member 312 and the third sliding member 16 and the second platform assembly 12.

[0054] Referring to Figures 1, 2 and 4, in one embodiment, the driving mechanism 3 also includes a z-direction driving component 33, which is arranged on the third platform component 13, so that after the test platform is subsequently installed on the third platform component 13, the z-direction driving component 33 can drive the test platform to move along the z-axis direction to simulate the straight-line operation in the z-axis direction.

[0055] Specifically, the z-direction drive assembly 33 includes a plurality of z-direction drive members, which are all arranged on the side of the third platform assembly 13 away from the second platform assembly 12, so that the third platform assembly 13 can be stably connected to the test platform later. More specifically, the platform mechanism 1 also includes a mounting member 17, which is spaced apart from the third platform assembly 13 along the z-axis direction, and a plurality of z-direction drive members are all penetrated on the mounting member 17 and can be driven to move along the z-axis direction. The mounting member 17 can be installed on the test platform so that the test platform can be connected to the third platform assembly 13.

[0056] It can be understood that in the embodiment of the present application, the z-direction drive assembly 33 includes four z-direction drive members, and the four z-direction drive members are all arranged at the four corners of the side of the third platform assembly 13 away from the second platform assembly 12. The mounting member 17 is a mounting frame, and the z-direction drive member includes a housing and a telescopic rod, the telescopic rod is movably connected to the third platform assembly 13 through a ball connector, the housing is passed through the mounting member 17 and connected to the mounting member 17, and when the telescopic rod is extended and retracted relative to the housing along the z-axis direction, the housing can drive the mounting member 17 to move along the z-axis direction, so that the test platform can simulate the straight-line operation and tilting, vibration and swinging in the z-axis direction.

[0057] An embodiment of the present application further provides a simulation system, comprising a multi-degree-of-freedom motion platform as described in any one of the above embodiments.

[0058] The simulation system of the present application can install the test platform on the third platform component 13, and then drive the second platform component 12 and the third platform component 13 to move along the x-axis direction through the x-direction drive component 31 of the multi-degree-of-freedom motion platform, so that the test platform can simulate the straight-line operation in the x-axis direction. The first rotating member 21 and the second rotating member 22 are driven to move in the same or opposite directions along the y-axis direction through the y-direction drive component 32 of the multi-degree-of-freedom motion platform, so that the third platform component 13 can move along the y-axis direction or rotate around the z-axis direction, so that the test platform can simulate the straight-line operation in the y-axis direction or the turning operation around the z-axis direction. The test platform is driven to move along the z-axis direction by the z-direction drive component 33 of the multi-degree-of-freedom motion platform to simulate the straight-line operation and tilt, vibration and sway in the z-axis direction. The simulation system of the present application has higher precision and stability than the actuator composed of multiple telescopic rods, and has richer motion modes and a wider range of motion than the three-axis linear module, and can adapt to more diverse application scenarios.

[0059] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0060] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A multi-degree-of-freedom motion platform, characterized in that: include: A platform mechanism, comprising a first platform component, a second platform component and a third platform component, wherein the second platform component is arranged between the first platform component and the third platform component along the z-axis direction; a first sliding member, a second sliding member and a third sliding member capable of sliding along the x-axis direction are arranged on the side of the second platform component facing the third platform component, and the third sliding member is arranged between the first sliding member and the second sliding member along the x-axis direction; A rotating mechanism, comprising a first rotating member, a second rotating member and a third rotating member, wherein the first rotating member is arranged on the first sliding member and can slide on the first sliding member along the y-axis direction, the second rotating member is arranged on the second sliding member and can slide on the second sliding member along the y-axis direction, the third rotating member is arranged on the third sliding member and can slide on the third sliding member along the y-axis direction, and the first rotating member, the second rotating member and the third rotating member are all connected to the third platform assembly; The driving mechanism includes an x-axis driving component and a y-axis driving component. The x-axis driving component is arranged on the first platform component and can drive the second platform component to move along the x-axis direction. The y-axis driving component is arranged on the second platform component and can drive the first rotating member and the second rotating member to move along the y-axis direction.

2. The multi-degree-of-freedom motion platform according to claim 1, characterized in that: The y-direction driving assembly includes a first y-direction driving member and a second y-direction driving member, wherein the first y-direction driving member is arranged on the first sliding member and connected to the first rotating member; the second y-direction driving member is arranged on the second sliding member and connected to the second rotating member.

3. The multi-degree-of-freedom motion platform according to claim 2, characterized in that: The first y-direction driving member is arranged on the inner side of the first sliding member, and the orthographic projection of the first rotating member on the second platform assembly is located on the first y-direction driving member; the second y-direction driving member is arranged on the inner side of the second sliding member, and the orthographic projection of the second rotating member on the second platform assembly is located on the second y-direction driving member.

4. The multi-degree-of-freedom motion platform according to claim 1, characterized in that: The x-direction driving assembly includes a first x-direction driving member and a second x-direction driving member, and the first x-direction driving member and the second x-direction driving member are arranged on the first platform assembly with an interval along the y-axis direction.

5. The multi-degree-of-freedom motion platform according to claim 4, characterized in that: The first x-direction driving member and the second x-direction driving member are respectively connected to two ends of the third sliding member along the y-axis direction.

6. The multi-degree-of-freedom motion platform according to claim 5, characterized in that: The orthographic projection of the third sliding member on the first platform assembly is located on the first x-direction driving member; and / or the orthographic projection of the third sliding member on the first platform assembly is located on the second x-direction driving member.

7. The multi-degree-of-freedom motion platform according to claim 1, characterized in that: The platform mechanism also includes a mounting member, which is spaced apart from the third platform component along the z-axis direction; the driving mechanism also includes a z-direction driving component, which is arranged on the third platform component and can drive the mounting member to move along the z-axis direction.

8. The multi-degree-of-freedom motion platform according to claim 7, characterized in that: The z-direction driving assembly includes a plurality of z-direction driving members, and the plurality of z-direction driving members are all arranged on a side of the third platform assembly facing away from the second platform assembly.

9. The multi-degree-of-freedom motion platform according to claim 8, characterized in that: The plurality of z-direction driving members are all disposed on the mounting member.

10. A simulation system, characterized in that: It comprises a multi-degree-of-freedom motion platform as described in any one of claims 1-9.

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