Expression method of rotation center vector for topological structure of multi-power source fixed-axis multi-gear system

Abstract

The present invention discloses a method for expressing the rotation center vector of the topological structure of a multi-power source fixed-axis multi-gear system, the method comprising obtaining component definition data of the multi-source fixed-axis transmission system; constructing a first rule based on the component definition data to establish a single rotation center vector according to the first rule; constructing a second rule based on the single rotation center vector to establish a multi-axis rotation center vector according to the second rule; calculating the transmission ratio between gear shafts and the transmission conflict data of the mechanism based on the multi-axis rotation center vector to determine the transmission ratio between the power source and the output shaft according to the calculation result. The present invention can integrate both topological structure information and parameter information, laying a foundation for the coordinated optimization of system topological structure and parameters.

Description

Technical Field

[0001] The present invention relates to the technical field of transmission systems for pure electric vehicles, and in particular to a method for expressing a rotation center vector of a topological structure of a multi-power source fixed-axis multi-gear system. Background Art

[0002] The electrification of vehicles is an important measure to achieve low carbon. The multi-energy source multi-speed transmission system is the lowest cost form of low carbonization of the power system, but how to achieve the coordinated optimization of the topology structure and parameters of the multi-source multi-speed transmission system is the primary difficulty in the system design process. Summary of the invention

[0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0004] To this end, in view of the problem of topological structure and parameter coordinated optimization, the present invention proposes a method for expressing the rotation center vector of the topological structure of a multi-power source fixed-axis multi-gear system. First, the rotation center vector is established, and then expanded to a multi-axis rotation center matrix to express various forms of multi-source fixed-axis transmission system topological structures. This method can integrate both topological structure information and parameter information, laying the foundation for the coordinated optimization of system topological structure and parameters.

[0005] Another object of the present invention is to provide a device for expressing the rotation center vector of a topological structure of a multi-power source fixed-axis multi-speed system.

[0006] To achieve the above-mentioned purpose, the present invention proposes, on one hand, a method for expressing the rotation center vector of a topological structure of a multi-power source fixed-axis multi-gear system, comprising:

[0007] Obtain component definition data of a multi-source fixed-axis transmission system;

[0008] constructing a first rule based on the component definition data to establish a single rotation center vector according to the first rule;

[0009] constructing a second rule based on the single rotation center vector to establish a multi-axis rotation center vector according to the second rule;

[0010] The transmission ratio between gear shafts and the transmission conflict data of the mechanism are calculated based on the multi-axis rotation center vector, so as to determine the transmission ratio between the power source and the output shaft according to the calculation result.

[0011] The method for expressing the rotation center vector of the topological structure of the multi-power source fixed-axis multi-gear system according to the embodiment of the present invention may also have the following additional technical features:

[0012] In one embodiment of the present invention, the component definition data includes: definition data of a single-end power source, a double-end power source, an idler gear shaft, a fixed gear, an idler gear and a synchronizer connecting gear.

[0013] In one embodiment of the present invention, constructing a first rule based on the component definition data to establish a single rotation center vector according to the first rule includes:

[0014] constructing a first rule based on the component definition data;

[0015] Then establishing a single rotation center connection vector based on the first rule;

[0016] A single rotation center parameter vector is established based on the single rotation center connection vector to extract the number of teeth parameters of the corresponding position of the gear.

[0017] In one embodiment of the present invention, establishing a multi-axis rotation center vector according to the second rule includes:

[0018] constructing a second rule based on the single rotation center parameter vector;

[0019] Establishing a multi-axis rotation center parameter vector representing the connection relationship of the rotary center gear pair according to the second rule;

[0020] A multi-axis rotation center connection vector representing the gear connection relationship is established based on the multi-axis rotation center parameter vector.

[0021] In one embodiment of the present invention, determining the transmission ratio of the power source to the output shaft according to the calculation result includes:

[0022] Calculate the transmission ratio of each row of gears based on the synchronizers connected in sequence, and calculate the transmission ratio between the gear shafts;

[0023] Mechanism transmission conflict data is determined based on the transmission ratio between the gear shafts, and the transmission ratio between each power source and the output shaft is calculated based on the mechanism transmission conflict data.

[0024] To achieve the above-mentioned purpose, the present invention proposes, on the other hand, a device for expressing the rotation center vector of a topological structure of a multi-power source fixed-axis multi-gear system, comprising:

[0025] A component data definition module, used to obtain component definition data of a multi-source fixed-axis transmission system;

[0026] a first vector determination module, configured to construct a first rule based on the component definition data to establish a single rotation center vector according to the first rule;

[0027] a second vector determination module, configured to construct a second rule based on the single rotation center vector, so as to establish a multi-axis rotation center vector according to the second rule;

[0028] The transmission ratio determination module is used to calculate the transmission ratio between gear shafts and the transmission conflict data of the mechanism based on the multi-axis rotation center vector, so as to determine the transmission ratio between the power source and the output shaft according to the calculation result.

[0029] The method and device for expressing the rotation center vector of the topological structure of a multi-power source fixed-axis multi-speed system in the embodiment of the present invention can digitally express the topological structure of a multi-source fixed-axis multi-speed transmission system, integrating both the topological structure information and the parameter information of the multi-source fixed-axis transmission system; the proposed vector representation method can correspond one-to-one to the topological structure; and can be expanded to a multi-axis multi-rotation center transmission system; and can also express any multi-source fixed-axis variable speed transmission system structure.

[0030] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0032] Figure 1 is a flow chart of a method for expressing a rotation center vector of a topological structure of a multi-power source fixed-axis multi-gear system according to an embodiment of the present invention;

[0033] Figure 2 It is a logic schematic diagram of a method for expressing a rotation center vector of a topological structure of a multi-power source fixed-axis multi-gear system according to an embodiment of the present invention;

[0034] Figure 3 It is a structural schematic diagram of a rotation center vector expression device for a topological structure of a multi-power source fixed-axis multi-gear system according to an embodiment of the present invention. DETAILED DESCRIPTION

[0035] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0036] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0037] The following describes a method and device for expressing the rotation center vector of a topological structure of a multi-power source fixed-axis multi-gear system according to an embodiment of the present invention with reference to the accompanying drawings.

[0038] Figure 1 It is a flow chart of a method for expressing a rotation center vector of a topological structure of a multi-power source fixed-axis multi-gear system according to an embodiment of the present invention.

[0039] like Figure 1 As shown, the method includes but is not limited to the following steps:

[0040] S1, obtaining component definition data of a multi-source fixed-axis transmission system;

[0041] S2, constructing a first rule based on the component definition data to establish a single rotation center vector according to the first rule;

[0042] S3, constructing a second rule based on the single rotation center vector to establish a multi-axis rotation center vector according to the second rule;

[0043] S4, calculating the transmission ratio between gear shafts and the transmission conflict data of the mechanism based on the multi-axis rotation center vector, so as to determine the transmission ratio between the power source and the output shaft according to the calculation result.

[0044] It can be understood that the present invention first defines the relevant component data, establishes the rotation center vector, and then expands to the multi-axis rotation center matrix to express various forms of multi-source fixed-axis transmission system topology. This method can integrate both topological structure information and parameter information, laying the foundation for the coordinated optimization of system topology and parameters. Figure 2 shown.

[0045] In one embodiment of the present invention, the component definition data includes: definition data of a single-end power source, a double-end power source, an idler gear shaft, a fixed gear, an idler gear and a synchronizer connecting gear.

[0046] Specifically, define the relevant component data:

[0047] P: Power source: P 1 Single-ended power source, P 2 Double-ended power source;

[0048] 1: Idle gear shaft, 2: Fixed gear, 3: Idle gear, 4: Synchronizer connecting gear.

[0049] In one embodiment of the present invention, a first rule is constructed based on component definition data; a single rotation center connection vector is then established based on the first rule; and a single rotation center parameter vector is established based on the single rotation center connection vector to extract the gear corresponding position tooth number parameter.

[0050] Specifically, a single rotation center connection vector is established:

[0051] Rules: Single-ended power source: 1) Only one end can be connected, so it can only be located at the first position of the vector 2) The other end cannot be an empty gear shaft.

[0052] Active: Passive:

[0053] Then a single rotation center parameter vector is established, and only the number of teeth parameters of the corresponding position of the gear are extracted.

[0054] Active:

[0055] Passive:

[0056] In one embodiment of the present invention, a second rule is constructed based on a single rotation center parameter vector; a multi-axis rotation center parameter vector representing the rotation center gear pair connection relationship is established according to the second rule; and a multi-axis rotation center connection vector representing the gear connection relationship is established based on the multi-axis rotation center parameter vector.

[0057] Specifically, a multi-axis rotation center parameter vector is established to express the connection relationship of the rotating center gear pair.

[0058] rule:

[0059] 1) Sequential connection, the connection lines do not intersect;

[0060]

[0061] 2) Gears are connected in one-to-one kinematic pairs, not one-to-many;

[0062]

[0063] 3) The order of the transmission shafts of the gear pair can be changed, but cannot form a ring;

[0064]

[0065] Finally, the multi-axis rotation center connection vector is established to represent the gear connection relationship (1: idler gear shaft 2: fixed gear 3: idler gear 4: synchronizer connection gear)

[0066]

[0067] Among them, the transmission ratio calculation between shafts: calculate the transmission ratio of each row of gears and record the transmission ratio between gear shafts.

[0068] Among them, the transmission conflict of the mechanism is determined: if there are two transmission ratios for a pair of gear shafts, there is a transmission conflict and the mechanical structure is abnormal, which is eliminated.

[0069] Among them, the number of gears is determined by: selecting the output shaft. Connecting each synchronizer in turn, calculating the transmission ratio of each row of gears, recording the transmission ratio between the gear shafts, and determining the transmission conflict of the mechanism, eliminating the abnormal mechanical structure. Keeping the normal structure, and recording the transmission ratio of each power source and the output shaft.

[0070] The method for expressing the rotation center vector of the topological structure of a multi-power source fixed-axis multi-speed system in an embodiment of the present invention not only integrates the topological structure information of the multi-source fixed-axis transmission system but also integrates the parameter information. At the same time, the proposed vector representation method can correspond one-to-one with the topological structure, and can be extended to a multi-axis multi-rotation center transmission system, and can also express any multi-source fixed-axis variable speed transmission system structure.

[0071] In order to implement the above embodiment, Figure 3 As shown, this embodiment also provides a device 10 for expressing the rotation center vector of a topological structure of a multi-power source fixed-axis multi-gear system. The device 10 includes a component data definition module 100, a first vector determination module 200, a second vector determination module 300, and a transmission ratio determination module 400;

[0072] A component data definition module 100 is used to obtain component definition data of a multi-source fixed-axis transmission system;

[0073] A first vector determination module 200, for constructing a first rule based on the component definition data to establish a single rotation center vector according to the first rule;

[0074] A second vector determination module 300, for constructing a second rule based on a single rotation center vector, so as to establish a multi-axis rotation center vector according to the second rule;

[0075] The transmission ratio determination module 400 is used to calculate the transmission ratio between gear shafts and the transmission conflict data of the mechanism based on the multi-axis rotation center vector, so as to determine the transmission ratio between the power source and the output shaft according to the calculation result.

[0076] Furthermore, the component definition data includes: definition data of a single-end power source, a double-end power source, an idler gear shaft, a fixed gear, an idler gear and a synchronizer connecting gear.

[0077] Furthermore, the first vector determination module 200 is further configured to:

[0078] constructing a first rule based on the component definition data;

[0079] Then, a single rotation center connection vector is established based on the first rule;

[0080] A single rotation center parameter vector is established based on the single rotation center connection vector to extract the number of teeth parameters of the corresponding position of the gear.

[0081] Furthermore, the second vector determination module 300 is further configured to:

[0082] Constructing a second rule based on a single rotation center parameter vector;

[0083] Establishing a multi-axis rotation center parameter vector representing the connection relationship of the rotary center gear pair according to the second rule;

[0084] A multi-axis rotation center connection vector representing the gear connection relationship is established based on the multi-axis rotation center parameter vector.

[0085] Furthermore, the transmission ratio determination module 400 is further configured to:

[0086] Calculate the transmission ratio of each row of gears based on the synchronizers connected in sequence, and calculate the transmission ratio between the gear shafts;

[0087] Mechanism transmission conflict data is determined based on the transmission ratio between the gear shafts, and the transmission ratios of each power source and the output shaft are calculated based on the mechanism transmission conflict data.

[0088] The device for expressing the topological structure rotation center vector of a multi-power source fixed-axis multi-speed system in an embodiment of the present invention integrates both the topological structure information and the parameter information of the multi-source fixed-axis transmission system. At the same time, the proposed vector representation method can correspond one-to-one to the topological structure, and can be extended to a multi-axis multi-rotation center transmission system, and can also express any multi-source fixed-axis variable speed transmission system structure.

[0089] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0090] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

Claims

1. A method for expressing the rotation center vector of a topological structure of a multi-power source fixed-axis multi-gear system, characterized in that: The method comprises: Obtain component definition data of a multi-source fixed-axis transmission system; constructing a first rule based on the component definition data to establish a single rotation center vector according to the first rule; constructing a second rule based on the single rotation center vector to establish a multi-axis rotation center vector according to the second rule; Calculating the transmission ratio between gear shafts and the transmission conflict data of the mechanism based on the multi-axis rotation center vector, so as to determine the transmission ratio between the power source and the output shaft according to the calculation result; The component definition data includes: definition data of a single-end power source, a double-end power source, an idler gear shaft, a fixed gear, an idler gear and a synchronizer connecting gear; Constructing a first rule based on the component definition data to establish a single rotation center vector according to the first rule, including: constructing a first rule based on the component definition data; Then establishing a single rotation center connection vector based on the first rule; Establishing a single rotation center parameter vector based on the single rotation center connection vector to extract the number of teeth parameters of the corresponding position of the gear; Establishing a multi-axis rotation center vector according to the second rule includes: constructing a second rule based on the single rotation center parameter vector; Establishing a multi-axis rotation center parameter vector representing the connection relationship of the rotary center gear pair according to the second rule; Establishing a multi-axis rotation center connection vector representing the gear connection relationship based on the multi-axis rotation center parameter vector; Determining the transmission ratio between the power source and the output shaft according to the calculation result includes: Calculate the transmission ratio of each row of gears based on the synchronizers connected in sequence, and calculate the transmission ratio between the gear shafts; Mechanism transmission conflict data is determined based on the transmission ratio between the gear shafts, and the transmission ratio between each power source and the output shaft is calculated based on the mechanism transmission conflict data.

2. A device for expressing the rotation center vector of a topological structure of a multi-power source fixed-axis multi-gear system, characterized in that: include: A component data definition module, used to obtain component definition data of a multi-source fixed-axis transmission system; a first vector determination module, configured to construct a first rule based on the component definition data to establish a single rotation center vector according to the first rule; a second vector determination module, configured to construct a second rule based on the single rotation center vector, so as to establish a multi-axis rotation center vector according to the second rule; A transmission ratio determination module, used to calculate the transmission ratio between gear shafts and the transmission conflict data of the mechanism based on the multi-axis rotation center vector, so as to determine the transmission ratio between the power source and the output shaft according to the calculation result; The component definition data includes: definition data of a single-end power source, a double-end power source, an idler gear shaft, a fixed gear, an idler gear and a synchronizer connecting gear; The first vector determination module is further used for: constructing a first rule based on the component definition data; Then establishing a single rotation center connection vector based on the first rule; Establishing a single rotation center parameter vector based on the single rotation center connection vector to extract the number of teeth parameters of the corresponding position of the gear; The second vector determination module is further used for: constructing a second rule based on the single rotation center parameter vector; Establishing a multi-axis rotation center parameter vector representing the connection relationship of the rotary center gear pair according to the second rule; Establishing a multi-axis rotation center connection vector representing the gear connection relationship based on the multi-axis rotation center parameter vector; The transmission ratio determination module is further used for: Calculate the transmission ratio of each row of gears based on the synchronizers connected in sequence, and calculate the transmission ratio between the gear shafts; Mechanism transmission conflict data is determined based on the transmission ratio between the gear shafts, and the transmission ratio between each power source and the output shaft is calculated based on the mechanism transmission conflict data.

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