A dual-redundant resolver engine

Abstract

The invention relates to the technical field of shaft detection, and specifically discloses a dual-redundancy resolver engine, comprising a resolver mechanism, wherein the resolver mechanism comprises a stator and a rotor, and the rotor rotates relative to the stator; an inverter mechanism, wherein both ends of the inverter mechanism are respectively connected to the resolver mechanism, and the inverter mechanism comprises an inverter, an inverter fixed block and an inverter end cover; a piezoelectric drive mechanism, wherein the piezoelectric drive mechanism comprises a drive housing, a dual piezoelectric ring, a piezoelectric device, a bearing and a first transmission shaft, and drives the dual piezoelectric ring to rotate and drives the first transmission shaft to rotate by giving different electrical signal excitations to an internal pressure device and an external pressure device; an air duct; and a cooling mechanism, wherein the cooling mechanism is connected to the air duct, and the cooling mechanism comprises a cooling cover, a cooler and a cooling pipe. The invention overcomes the defects of the resolver in the prior art that the space occupancy rate is large, the heat generated is excessive, and the detection result is easily affected by electromagnetic interference.

Description

Technical Field

[0001] The invention relates to the field of shaft detection, and in particular to a dual-redundant resolver engine. Background Art

[0002] The resolver is an important sensor widely used in servo control systems, aerospace, robotics and other fields to measure shaft rotation speed and angular position. It converts high-frequency input signals into signals to be decoded with a certain functional relationship to obtain useful angular position information.

[0003] In the prior art, multiple rotary transformers are generally used to detect the rotation speed and angular position of the shaft, but multiple rotary transformers occupy a large amount of space. When the rotary transformers and drive devices are working, they are prone to generate a lot of heat, which will affect the working efficiency. Ordinary motors are prone to produce electromagnetic interference to the detection effect. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] The problem to be solved by the present invention is to provide a dual-redundancy resolver engine to overcome the defects of the resolver in the prior art, such as large space occupancy, excessive heat generation and easy electromagnetic interference affecting the detection results.

[0006] (II) Technical solution

[0007] In order to solve the technical problem, the present invention provides a dual-redundancy resolver engine, comprising:

[0008] A resolver mechanism, the resolver mechanism comprising a stator and a rotor, the rotor being connected to a rotating shaft, the inner side of the stator being rotatably connected to the rotor, the outer side of the stator being connected to a housing, and the rotor rotating relative to the stator;

[0009] An inverter mechanism, wherein the rotating mechanism has two, and the two ends of the inverter mechanism are respectively connected to the two rotating mechanisms, the inverter mechanism comprises an inverter, an inverter fixing block and an inverter end cover, the inverter is connected to the rotating shaft through a first fixing block, the two inverter fixing blocks are connected to the two housings, the inner end of the inverter fixing block is provided with an external thread, the inverter end cover has an internal thread, and the inverter end cover is threadedly connected to the inverter fixing block;

[0010] A piezoelectric drive mechanism, the piezoelectric drive mechanism comprising a drive housing, a dual piezoelectric ring, a piezoelectric device, a bearing, a first transmission shaft and a sleeve, the drive housing being connected to a dual-redundant resolver engine, the bearing being connected to the drive housing, the sleeve being sleeved on the bearing, the first transmission shaft being inserted into the bearing, the piezoelectric device being connected to the first transmission shaft, the dual piezoelectric ring being connected to the piezoelectric device, the dual piezoelectric ring dividing the piezoelectric device into an internal pressure device and an external pressure device, and driving the dual piezoelectric ring to rotate and driving the first transmission shaft to rotate by giving different electrical signal excitations to the internal pressure device and the external pressure device;

[0011] An air duct, the air duct is arranged at the lower side of the inverter mechanism, and the air duct is connected from the other end of the second resolver mechanism to the other end of the first resolver mechanism through the shaft sleeve;

[0012] A cooling mechanism is connected to the air duct, and the cooling mechanism includes a cooling cover, a cooler and a cooling pipe. The cooling cover is connected to the cooler, and the cooling pipe is located inside the cooling cover and connected to the cooler.

[0013] As mentioned above, in the dual-redundant resolver engine, optionally, the resolver mechanism includes a stator cover and a rotor cover, the stator cover is respectively connected to the housing and the stator, and the rotor cover is respectively connected to the rotating shaft and the rotor.

[0014] As described above, in the dual-redundant resolver engine, optionally, the stator is provided with a winding, the rotor is provided with a winding, and the drive housing is connected to the stator housing and the rotor housing.

[0015] As described above, in the dual-redundant resolver engine, optionally, two threading holes are provided on the inverter fixing block, and the cables pass through the threading holes.

[0016] As described above, in the dual-redundant resolver engine, optionally, the first transmission shaft is connected to the rotating shaft, and the first transmission shaft drives the rotating shaft to rotate.

[0017] As described above, the dual-redundant resolver engine can optionally include a fixed connection block and a shock absorber, wherein the fixed connection block is connected to the housing, and the shock absorber is disposed adjacent to the fixed connection block.

[0018] As described above, the dual-redundant resolver engine, optionally, a fan is also provided on the rotating shaft.

[0019] As described above, in the dual-redundant resolver engine, optionally, a wind shield is provided adjacent to the fan.

[0020] (III) Beneficial effects

[0021] The invention provides a dual-redundant resolver engine, which has the following beneficial effects:

[0022] (1) The present invention processes two resolver mechanisms through one inverter mechanism, which changes the prior art in which each resolver mechanism corresponds to one inverter mechanism, thereby improving space utilization and saving material usage and avoiding waste without affecting efficiency.

[0023] (2) Both inverter mechanisms of the present invention include a rotor and a stator. The rotor is connected to a rotating shaft. The rotating shaft can drive the rotor to rotate while rotating. Both the rotor and the stator have windings. When the rotor rotates, due to the change in magnetic flux, an induced electromotive force will be generated on the winding of the stator. The magnitude and frequency of the electromotive force are related to the rotation speed and angle of the rotor. The stator transmits the induced electromotive force to the inverter mechanism through a cable. The inverter mechanism processes the data and sends the detection situation to an external control device. The two inverter mechanisms detect the rotation angle and speed of the motor at the same time, which can greatly improve the detection accuracy. Moreover, the connection with the outside world through cables can also ensure that the outside world can receive accurate data.

[0024] (3) The present invention arranges an air duct in the dual-redundant resolver engine and ensures that air circulates in the air duct through a fan connected to the air duct. A cooling mechanism is also arranged between the air ducts. The cooler in the cooling mechanism adopts the Peltier effect for cooling. The cooling pipe is connected to the cooling end to cool the air duct and absorb heat. The internal circulation air duct can effectively cool the dual-redundant resolver engine and ensure the efficient operation of its parts.

[0025] (4) The present invention drives the dual piezoelectric rings to rotate by giving different electrical signal excitations to the internal pressure device and the external pressure device, and drives the first transmission shaft to rotate. The first transmission shaft drives the rotating shaft to rotate. The first transmission shaft driven by the inverse piezoelectric effect can effectively avoid electromagnetic interference. At the same time, by exciting and driving the rotation of the first transmission shaft through electrical signals, energy utilization can be effectively saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 It is a cross-sectional view of a dual-redundant resolver engine of the present invention;

[0028] Figure 2 A top view of a dual-redundant resolver engine of the present invention;

[0029] Figure 3 It is a partial cross-sectional view of a dual-redundant resolver engine of the present invention;

[0030] Figure 4 It is a partial cross-sectional view of a resolver mechanism of a dual-redundant resolver engine of the present invention;

[0031] Figure 5 It is a cross-sectional view of a piezoelectric drive mechanism of a dual-redundant resolver engine of the present invention;

[0032] Figure 6 It is a cross-sectional view of an inverter mechanism of a dual-redundant resolver engine of the present invention;

[0033] Figure 7 It is a three-dimensional diagram of a piezoelectric drive mechanism of a dual-redundant resolver engine of the present invention;

[0034] Figure 8 It is a partial schematic diagram of a lubrication mechanism of a dual-redundant resolver engine of the present invention.

[0035] The names of the components corresponding to the various figure marks in the figure are: 1. rotating mechanism; 11. stator; 12. rotor; 13. rotating shaft; 14. housing; 15. stator cover; 16. rotor cover; 2. inverter mechanism; 21. inverter; 22. inverter fixing block; 23. inverter end cover; 24. first fixing block; 25. threading hole; 3. piezoelectric drive mechanism; 31. drive housing; 32. double piezoelectric ring; 33. piezoelectric device; 34. bearing; 35. first transmission shaft; 36. internal pressure device; 37. external pressure device; 38. bushing; 4. air duct; 41. cooling mechanism; 42. cooling cover; 43. cooler; 44. cooling pipe; 45. fan; 61. fixed connection block; 62. shock absorber. DETAILED DESCRIPTION

[0036] The present application is described in detail below with reference to the accompanying drawings and specific embodiments.

[0037] The following describes the implementation methods of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific implementation methods, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, in the absence of conflict, the following embodiments and the features in the embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work belong to the scope of protection of the present application.

[0038] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on the present application, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspect described herein can be used to implement the device and / or practice the method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this device and / or practice this method.

[0039] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application. The drawings only show components related to the present application rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0040] Additionally, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that the examples can be practiced without these specific details.

[0041] The technical solutions provided by various embodiments of the present application are described below in conjunction with the accompanying drawings.

[0042] See also Figures 1 to 8 The present invention provides a dual-redundancy resolver engine, comprising a resolver mechanism 1, an inverter mechanism 2, a piezoelectric drive mechanism 3 and a cooling mechanism 41. The resolver mechanism 1 has two, two resolvers 1 are respectively connected to the two ends of the inverter mechanism 2, the piezoelectric drive mechanism 3 is connected to the resolver mechanism 1, and is used to drive the rotor 12 in the resolver mechanism 1 to rotate, and the cooling mechanism 41 is used to cool the resolver transmitter. It should be noted that the resolver engine can detect the rotation angle and speed of the motor.

[0043] Furthermore, the resolver mechanism 1 includes a stator 11 and a rotor 12 . The rotor 12 is connected to a rotating shaft 13 . The inner side of the stator 11 is rotatably connected to the rotor 12 . The outer side of the stator 11 is connected to a housing 14 . The rotor 12 rotates relative to the stator 11 .

[0044] Specifically, windings are provided on the stator 11 and windings are provided on the rotor 12 . When the rotor 12 rotates, an induced electromotive force is generated on the windings of the stator 11 due to changes in magnetic flux. The magnitude and frequency of the electromotive force are related to the rotation speed and angle of the rotor 12 .

[0045] Furthermore, a stator cover 15 and a rotor cover 16 are provided between the stator 11 and the rotor 12 to protect the stator 11 and the rotor 12. Specifically, the rotary mechanism 1 includes a stator cover 15 and a rotor cover 16, wherein the stator cover 15 is connected to the housing 14 and the stator 11 respectively, and the rotor cover 16 is connected to the rotating shaft 13 and the rotor 12 respectively.

[0046] exist Figures 1 to 8 In an optional embodiment, there are two rotating mechanisms 1, and both ends of the inverter mechanism 2 are respectively connected to the two rotating mechanisms 1. The inverter mechanism 2 includes an inverter 21, an inverter fixed block 22 and an inverter end cover 23. The inverter 21 is connected to the rotating shaft 13 through a first fixed block 24. The two inverter fixed blocks 22 are connected to the two shells 14. The inner end of the inverter fixed block 22 is provided with an external thread, and the inverter end cover 23 has an internal thread. The inverter end cover 23 is threadedly connected to the inverter fixed block 22.

[0047] It should be noted that, those skilled in the art can open the inverter end cover 23 to perform maintenance and replacement on the inside thereof.

[0048] Further, two threading holes 25 are provided on the inverter fixing block 22, and the cables pass through the threading holes 25. The threading holes 25 can prevent the cables from being entangled when the dual-redundancy resolver engine is working.

[0049] exist Figures 1 to 8 In an optional embodiment, the piezoelectric drive mechanism 3 includes a drive housing 31, a dual piezoelectric ring 32, a piezoelectric device 33, a bearing 34 and a first transmission shaft 35. The drive housing 31 is connected to the dual-redundant rotary transformer engine, the bearing 34 is connected to the drive housing 31, the first transmission shaft 35 is inserted in the bearing 34, the piezoelectric device 33 is connected to the first transmission shaft 35, and the dual piezoelectric ring 32 is connected to the piezoelectric device 33. The dual piezoelectric ring 32 divides the piezoelectric device 33 into an internal pressure device 36 and an external pressure device 37. By giving different electrical signal excitations to the internal pressure device 36 and the external pressure device 37, the dual piezoelectric ring 32 is driven to rotate and drive the first transmission shaft 35 to rotate.

[0050] Furthermore, the piezoelectric drive mechanism 3 is arranged on one side of the dual-redundant resolver motor.

[0051] Furthermore, the first transmission shaft 35 is connected to the rotating shaft 13, and the first transmission shaft 35 drives the rotating shaft 13 to rotate. The piezoelectric drive mechanism 3 can provide power for the rotating shaft 13.

[0052] exist Figures 1 to 8 In an optional embodiment, the dual-redundant resolver engine includes an air duct 4, which is arranged on the lower side of the inverter mechanism, and the air duct is connected from the other end of the second resolver mechanism to the other end of the first resolver mechanism through a shaft sleeve 38.

[0053] It should be noted that the rotating shaft 13 is also provided with a fan 45 , which can extract wind and circulate the wind inside the air duct 4 to ensure the cooling of the rotary mechanism 1 , the inverter mechanism 2 and the piezoelectric drive mechanism 3 .

[0054] Furthermore, a wind shield is arranged adjacent to the fan.

[0055] Furthermore, the cooling mechanism 41 is connected to the air duct 4 , and the cooling mechanism 41 includes a cooling cover 42 , a cooler 43 and a cooling pipe 44 . The cooling cover 42 is connected to the cooler 43 . The cooling pipe 44 is located inside the cooling cover 42 , and the cooling pipe 44 is connected to the cooler 43 .

[0056] The cooler 43 adopts the Peltier effect. When the current passes through the loop composed of different conductors, in addition to generating irreversible Joule heat, heat absorption or heat release will also occur at the joints of the different conductors. A cooling pipe 44 is connected to the heat absorption end of the cooler 43, so that the cooling pipe 44 can absorb heat.

[0057] Furthermore, the dual-redundant resolver engine includes a fixed connection block 61 and a shock absorber 62 . The fixed connection block 61 is connected to the housing 14 , and the shock absorber 62 is disposed adjacent to the fixed connection block 61 .

[0058] A dual-redundant resolver engine of the present invention comprises the following specific steps:

[0059] By processing two resolver mechanisms 1 through one inverter mechanism 2, the prior art is changed, in which each resolver mechanism 1 corresponds to one inverter mechanism 2, thereby improving space utilization and saving material usage and avoiding waste without affecting efficiency.

[0060] Both inverter mechanisms 2 include a rotor 12 and a stator 11. The rotor 12 is connected to a rotating shaft 13. The rotating shaft 13 can drive the rotor 12 to rotate while rotating. Both the rotor 12 and the stator 11 have windings. When the rotor 12 rotates, due to the change in magnetic flux, an induced electromotive force will be generated on the winding of the stator 11. The magnitude and frequency of the electromotive force are related to the rotation speed and angle of the rotor 12. The stator 11 transmits the induced electromotive force to the inverter mechanism 2 through a cable. The inverter mechanism 2 processes the data and sends the detection situation to an external control device. The two inverter mechanisms 2 detect the rotation angle and speed of the motor at the same time, which can greatly improve the detection accuracy, and the connection with the outside world through a cable can also ensure that the outside world can receive accurate data.

[0061] An air duct 4 is provided in the dual-redundant resolver engine, and air is ensured to circulate in the air duct 4 through a fan 45 connected to the air duct 4. A cooling mechanism 41 is also provided between the air ducts 4. The cooler 43 in the cooling mechanism 41 adopts the Peltier effect for cooling. The cooling pipe 44 is connected to the cooling end to cool and absorb heat from the air duct 4. The internally circulating air duct 4 can effectively cool the dual-redundant resolver engine and ensure the efficient operation of its parts.

[0062] By giving different electrical signal excitations to the internal pressure device 36 and the external pressure device 37, the dual piezoelectric ring 32 is driven to rotate, and the first transmission shaft 35 is driven to rotate. The first transmission shaft 35 drives the rotating shaft 13 to rotate. The first transmission shaft 35 driven by the inverse piezoelectric effect can effectively avoid electromagnetic interference. At the same time, by exciting and driving the rotation of the first transmission shaft 35 through electrical signals, energy utilization can be effectively saved.

[0063] The same and similar parts between the various embodiments in this specification can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0064] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A dual-redundant resolver engine, characterized in that: include: A resolver mechanism (1), the resolver mechanism (1) comprising a stator (11) and a rotor (12), the rotor (12) being connected to a rotating shaft (13), the inner side of the stator (11) being rotationally connected to the rotor (12), the outer side of the stator (11) being connected to a housing (14), and the rotor (12) rotating relative to the stator (11); An inverter mechanism (2), wherein the rotating mechanism (1) has two, and both ends of the inverter mechanism (2) are respectively connected to the two rotating mechanisms (1), the inverter mechanism (2) comprises an inverter (21), an inverter fixing block (22) and an inverter end cover (23), the inverter (21) is connected to the rotating shaft (13) via a first fixing block (24), the two inverter fixing blocks (22) are connected to the two housings (14), the inner end of the inverter fixing block (22) is provided with an external thread, the inverter end cover (23) has an internal thread, and the inverter end cover (23) is threadedly connected to the inverter fixing block (22); A piezoelectric drive mechanism (3), the piezoelectric drive mechanism (3) comprising a drive housing (31), a dual piezoelectric ring (32), a piezoelectric device (33), a bearing (34), a first transmission shaft (35) and a shaft sleeve (38), the drive housing (31) being connected to a dual-redundancy rotary variable engine, the bearing (34) being connected to the drive housing (31), the shaft sleeve (38) being sleeved on the bearing (34), the first transmission shaft (35) being inserted into the bearing (34), the piezoelectric device (33) being connected to the first transmission shaft (35), the dual piezoelectric ring (32) being connected to the piezoelectric device (33), the dual piezoelectric ring (32) dividing the piezoelectric device (33) into an internal pressure device (36) and an external pressure device (37), and by giving different electrical signal excitations to the internal pressure device (36) and the external pressure device (37), the dual piezoelectric ring (32) is driven to rotate and the first transmission shaft (35) is driven to rotate; an air duct (4), the air duct (4) being arranged at the lower side of the inverter mechanism (2), the air duct (4) being connected from the other end of the second resolver mechanism (1) to the other end of the first resolver mechanism (1) through the shaft sleeve (38); A cooling mechanism (41), the cooling mechanism (41) being connected to the air duct (4), the cooling mechanism (41) comprising a cooling hood (42), a cooler (43) and a cooling pipe (44), the cooling hood (42) being connected to the cooler (43), the cooling pipe (44) being located inside the cooling hood (42), and the cooling pipe (44) being connected to the cooler (43).

2. The dual-redundant resolver engine according to claim 1, characterized in that: The rotary transformer mechanism (1) comprises a stator cover (15) and a rotor cover (16); the stator cover (15) is respectively connected to the housing (14) and the stator (11); and the rotor cover (16) is respectively connected to the rotating shaft (13) and the rotor (12).

3. The dual-redundant resolver engine according to claim 2, characterized in that: The stator (11) is provided with a winding, the rotor (12) is provided with a winding, and the drive housing (31) is connected to the stator cover (15) and the rotor cover (16).

4. The dual-redundant resolver engine according to claim 1, characterized in that: Two threading holes (25) are provided on the inverter fixing block (22), and cables pass through the threading holes (25).

5. The dual-redundant resolver engine according to claim 1, characterized in that: The first transmission shaft (35) is connected to the rotating shaft (13), and the first transmission shaft (35) drives the rotating shaft (13) to rotate.

6. The dual-redundant resolver engine according to claim 1, characterized in that: The dual-redundant resolver engine comprises a fixed connection block (61) and a shock absorber (62), wherein the fixed connection block (61) is connected to the housing (14), and the shock absorber (62) is arranged adjacent to the fixed connection block (61).

7. The dual-redundant resolver engine according to claim 1, characterized in that: A fan (45) is also provided on the rotating shaft (13).

8. The dual-redundant resolver engine according to claim 7, characterized in that: A wind shield is disposed adjacent to the fan (45).

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