WO2023131103A1 - 磁轴承组件及其控制方法、控制装置、压缩机和空调器 - Google Patents

磁轴承组件及其控制方法、控制装置、压缩机和空调器 Download PDF

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Publication number
WO2023131103A1
WO2023131103A1 PCT/CN2023/070033 CN2023070033W WO2023131103A1 WO 2023131103 A1 WO2023131103 A1 WO 2023131103A1 CN 2023070033 W CN2023070033 W CN 2023070033W WO 2023131103 A1 WO2023131103 A1 WO 2023131103A1
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WO
WIPO (PCT)
Prior art keywords
sensor
rotating shaft
distance
bearing assembly
magnetic bearing
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PCT/CN2023/070033
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English (en)
French (fr)
Inventor
杨斌
胡善德
岳宝
刘树清
李田
贺伟衡
靳珂珂
Original Assignee
广东美的暖通设备有限公司
美的集团股份有限公司
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Publication of WO2023131103A1 publication Critical patent/WO2023131103A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C32/00—Bearings not otherwise provided for
    • F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
    • F16C32/0406—Magnetic bearings
    • F16C32/044—Active magnetic bearings
    • F16C32/0444—Details of devices to control the actuation of the electromagnets
    • F16C32/0451—Details of controllers, i.e. the units determining the power to be supplied, e.g. comparing elements, feedback arrangements with P.I.D. control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C32/00—Bearings not otherwise provided for
    • F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
    • F16C32/0406—Magnetic bearings
    • F16C32/044—Active magnetic bearings
    • F16C32/0444—Details of devices to control the actuation of the electromagnets
    • F16C32/0446—Determination of the actual position of the moving member, e.g. details of sensors

Definitions

  • the present disclosure relates to the technical field of compressors, in particular, to a magnetic bearing assembly, a control method thereof, a control device, a compressor, and an air conditioner.
  • Magnetic levitation compressors are widely used in air conditioning systems due to their low noise, low maintenance costs, high operating efficiency, lightweight body, and low starting current.
  • the radial fluctuation of the rotating shaft will cause a speed signal error, reduce the measurement accuracy of the rotating shaft speed, and affect the normal operation of the compressor.
  • the present disclosure aims to solve at least one of the technical problems existing in the prior art.
  • At least one embodiment of the present disclosure proposes a magnetic bearing assembly.
  • At least one embodiment of the present disclosure provides a method for controlling a magnetic bearing assembly.
  • At least one embodiment of the present disclosure provides a control device for a magnetic bearing assembly.
  • At least one embodiment of the present disclosure provides a control device for a magnetic bearing assembly.
  • At least one implementation of the present disclosure provides a readable storage medium.
  • At least one embodiment of the present disclosure provides a magnetic bearing assembly.
  • At least one embodiment of the present disclosure proposes a compressor.
  • An air conditioner is provided in at least one embodiment of the present disclosure.
  • the magnetic bearing assembly includes: a rotating shaft, grooves are provided on the peripheral side of the rotating shaft; a distance sensor is provided on the peripheral side of the rotating shaft, and The annulus provided with grooves are oppositely arranged and located on the first circle, and the distance sensor includes: N first sensors; N second sensors, and on the first circle, the first sensors and the second sensors are alternately arranged; wherein , N is an integer greater than 1; the center of the first circle is located on the axis of the rotating shaft, and the plane where the first circle is located is perpendicular to the axis of the rotating shaft.
  • the disclosure proposes a magnetic bearing assembly.
  • the magnetic bearing assembly includes a stator and a rotor disposed around the stator. During operation, the rotor rotates under the action of the stator to generate power.
  • a rotating shaft is provided in the magnetic bearing assembly, and the rotating shaft may be a part of the rotor, or a power output shaft coaxially connected with the rotor, as long as the rotating shaft and the rotor rotate synchronously.
  • grooves are provided on the peripheral side of the rotating shaft, and a distance sensor is also arranged in the magnetic bearing assembly. It is arranged opposite to the annular surface provided with the groove on the rotating shaft. The distance sensor can measure the distance between itself and the surface of the rotating shaft.
  • the rotating shaft rotates, and the ring surface provided with the groove rotates in front of the distance sensor.
  • the distance sensor and The distance between the rotating shafts is the first distance
  • the distance between the distance sensor and the rotating shaft is the second distance
  • the groove is concave relative to the peripheral side of the rotating shaft , then the first distance is greater than the second distance. Therefore, after the groove passes through the measurement area of the distance sensor each time, the distance sensor will generate a pulse signal, that is, the rotating shaft rotates one circle, and then the rotational speed of the rotating shaft can be determined according to the pulse signal.
  • single or two distance sensors are mostly used to detect the rotational speed of the rotating shaft, but radial fluctuations inevitably occur during the working process of the rotating shaft, and the distance sensor also measures the distance between itself and the rotating shaft in the radial direction of the rotating shaft. distance. Therefore, when the radial fluctuation of the rotating shaft occurs, the distance between the distance sensor and the rotating shaft will change significantly due to the fluctuation, and a corresponding pulse signal will be output due to the fluctuation, and the pulse signal will affect the speed determination of the rotating shaft, making the system A speed value that does not match the actual speed is obtained.
  • the distance sensor includes N first sensors and N second sensors having the same number as the first sensors, where N is an integer greater than 1, that is, at least two pairs of first sensors and second sensors are provided. Both the first sensor and the second sensor are arranged on the same first circle with the axis of the rotating shaft as the axis, and measure the distance between itself and the rotating shaft at different positions of the first circle, and the measuring direction is the direction of the first circle. radial direction.
  • N first sensors are combined into a first measurement group
  • N second sensors are combined into a second measurement group.
  • the distance data measured by the N first sensors in the first measurement group are superimposed to obtain the first distance value
  • the distance data measured by the N second sensors in the second measurement group are superimposed, Get the second distance value.
  • the data measured by each distance sensor should be the same, so the first distance value and the second distance value are equal. As the distance between the sensors increases, the distance between the sensor on the opposite side and the rotating shaft will decrease correspondingly.
  • This opposite side distance compensation phenomenon can make the summed first distance value and the second distance value close to each other, ensuring that The possible error between the two is much smaller than the depth of the groove, thereby eliminating the influence of the radial fluctuation of the rotating shaft on the measurement of the rotational speed.
  • the depth of the groove is added to the summed distance value of the measurement group, but the summed distance value of the other group cannot make up for this depth, and then The rotation position of the groove is determined by the sudden increase of the difference between the first distance value and the second distance value, so as to obtain a precise rotational speed of the rotating shaft.
  • the distance sensor array defined in the present disclosure can eliminate the influence of the radial fluctuation of the rotating shaft on the measurement of the rotational speed of the rotating shaft, and further solve the technical problems in the related art of outputting wrong pulse signals, low accuracy of rotating speed measurement, and poor reliability of the rotating shaft.
  • the first sensors and the second sensors are arranged alternately.
  • This layout method can improve the distribution uniformity of the first sensor and the second sensor, avoid the first sensor or the second sensor not being distributed in a certain area, and ensure that the contralateral distance compensation phenomenon can be applied to the first measurement group and the second measurement group The measured first distance value and the second distance value, thereby improving measurement reliability.
  • the technical effects of optimizing the structure of the magnetic bearing assembly, improving the measurement accuracy of the rotor speed, improving the control accuracy of the magnetic bearing assembly, and reducing the failure rate of the magnetic bearing assembly are achieved.
  • the above-mentioned magnetic bearing assembly provided by the present disclosure may also have the following additional technical features:
  • the distance sensors are evenly distributed on the first circle.
  • the distribution manner of the distance sensors is described in detail. Specifically, on the first circle where the distance sensors are arranged, a plurality of distance sensors are evenly distributed, that is, the alternately arranged first sensors and second sensors are arranged at equal intervals on the first circle. Evenly distributed distance sensors on the basis of alternate settings can reduce the difference between the first distance value and the second distance value when radial fluctuations occur on the rotating shaft, so as to further reduce the influence of radial fluctuations on the measurement accuracy of the rotational speed of the rotating shaft, ensuring The distance sensor will not output false pulse signals. Further, the technical effect of optimizing the layout of the distance sensor, improving the measurement accuracy and reliability of the rotational speed of the rotating shaft, and reducing the failure rate of the magnetic bearing assembly is achieved.
  • the distance sensor includes: a third sensor; a fourth sensor, on the first circle, the angle between the third sensor and the fourth sensor is 180°; wherein, the N first sensors include the first Three sensors and a fourth sensor.
  • the first sensor group consists of two sensors, the third sensor and the fourth sensor. Moreover, on the first circle where the distance sensor is arranged, the included angle between the third sensor and the fourth sensor is 180°, that is, the third sensor and the fourth sensor are arranged on the same diameter.
  • the number of the first sensor and the second sensor is the same, and by limiting the number of the first sensor and the second sensor to two, the purchase cost of the sensor can be reduced on the basis of satisfying the measurement accuracy of the rotational speed.
  • the compensation effect between the two sensors can be improved;
  • the left and right sides of the diameter of the sensor are used to further improve the distance compensation effect and improve the accuracy of the determination of the direction of the groove on the shaft.
  • the technical effect of optimizing the layout of the distance sensor, improving the measurement accuracy and reliability of the rotational speed of the rotating shaft, and reducing the failure rate of the magnetic bearing assembly is achieved.
  • the distance sensor includes: a fifth sensor; a sixth sensor, on the first circle, the angle between the fifth sensor and the third sensor is 90°, and the angle between the fifth sensor and the sixth sensor is The range of the included angle is: greater than or equal to 135° and less than or equal to 225°; wherein, the N second sensors include the fifth sensor and the sixth sensor.
  • the second sensor group is composed of a fifth sensor and a sixth sensor.
  • the included angle between the fifth sensor, the third sensor and the fourth sensor is 90°, that is, the fifth sensor is arranged perpendicular to the diameter of the third sensor and the fourth sensor on the diameter.
  • the sixth sensor is arranged on the opposite side, and the included angle between the sixth sensor and the fifth sensor on the first circle must be greater than or equal to 135° and less than or equal to 225°.
  • the angle between the fifth sensor and the sixth sensor can be adaptively adjusted according to the actual working conditions of the rotating shaft.
  • the angle between the six sensors enables the fifth sensor or the sixth sensor to be correspondingly arranged in this high-frequency fluctuation direction, thereby further enhancing the measurement accuracy of the rotation speed of the rotating shaft.
  • a sixth sensor with an angle of 180° between the fifth sensor and the fifth sensor can be optionally provided, so that the distance sensor array can be applied to most occasions. Further, the technical effect of optimizing the layout of the distance sensor, improving the measurement accuracy and reliability of the rotational speed of the rotating shaft, and reducing the failure rate of the magnetic bearing assembly is achieved.
  • the magnetic bearing assembly further includes: a positioning member arranged on the peripheral side of the rotating shaft; a first positioning hole arranged on the positioning member, and the first sensor is embedded in the first positioning hole; a second positioning The hole is arranged on the positioning member, and the second sensor is embedded in the second positioning hole.
  • a positioning member is also arranged in the magnetic bearing assembly.
  • the positioning part is arranged on the peripheral side of the rotating shaft and spaced apart from the rotating shaft.
  • the positioning part is used for positioning and installing the first sensor and the second sensor.
  • the positioning member is provided with a first positioning hole and a second positioning hole, the first positioning hole is used for positioning and installing the first sensor, and the second positioning hole is used for positioning and installing the second sensor.
  • the positioning part is a metal part, for example, the positioning part can be made of aluminum.
  • the first sensor and the second sensor are embedded in the first through hole and the second through hole.
  • the positioning member is annular, and the positioning member and the rotating shaft share the same axis.
  • the positioning piece is an annular positioning piece, which can be selected as an aluminum ring.
  • the positioning member is sleeved on the outer peripheral side of the rotating shaft, spaced apart from the rotating shaft, and the axis of the annular positioning member coincides with the axis of the rotating shaft.
  • both the first positioning hole and the second positioning hole extend in the radial direction of the positioning member.
  • both the first positioning hole and the second positioning hole on the positioning member extend in the radial direction of the positioning member. Because the annular positioning member is coaxial with the rotating shaft, the first positioning hole and the second positioning hole also extend in the radial direction of the rotating shaft, wherein the openings of the first positioning hole and the second positioning hole are both facing the rotating shaft.
  • the radially extending first positioning hole and the second positioning hole are provided so that the measuring ends of the first sensor and the second sensor can be aligned with the peripheral side of the rotating shaft in the radial direction. Avoid positioning deviation from affecting the measurement accuracy of the first sensor and the second sensor, and improve the reliability of the measured data. Further, the technical effect of optimizing the positioning structure of the sensor, improving the reliability and accuracy of the rotating shaft speed measurement, and improving the working stability of the magnetic bearing assembly is achieved.
  • the magnetic bearing assembly further includes: an electric control, arranged on the positioning member, and connected to the first sensor and the second sensor.
  • an electric control is also arranged in the magnetic bearing assembly.
  • a positioning groove is provided on the positioning piece, and the electric control is plugged into the positioning groove, so as to support and position the electric control through the positioning piece.
  • one of the end faces of the annular positioning member is provided with an annular groove around the axis, the annular groove together with the first positioning hole, the second positioning hole and the positioning groove, and then the first sensor and the second sensor are respectively embedded in the first positioning After the inside of the hole and the second positioning hole, part of the first sensor and the second sensor are located in the annular groove.
  • the magnetic bearing assembly is also provided with an annular cover, which can cover the annular groove. On the one hand, it prevents the electric field generated by the sensor from extending outward, and on the other hand, it can prevent the connecting wire from coming out of the annular groove. Further, the technical effect of optimizing the structure of the positioning member, improving the working safety and reliability of the magnetic bearing assembly, and reducing the failure rate of the magnetic bearing assembly is realized.
  • At least one embodiment of the present disclosure provides a control method of a magnetic bearing assembly, which is used to control the magnetic bearing assembly in any of the above technical solutions, and the control method of the magnetic bearing assembly includes:
  • the rotational speed of the rotating shaft is determined according to the position information.
  • the magnetic bearing assembly includes a stator and a rotor arranged around the stator. During operation, the rotor rotates under the action of the stator to generate power.
  • a rotating shaft is provided in the magnetic bearing assembly, and the rotating shaft may be a part of the rotor, or a power output shaft coaxially connected with the rotor, as long as the rotating shaft and the rotor rotate synchronously.
  • grooves are provided on the peripheral side of the rotating shaft, and a distance sensor is also arranged in the magnetic bearing assembly. It is arranged opposite to the annular surface provided with the groove on the rotating shaft.
  • the distance sensor can measure the distance between itself and the surface of the rotating shaft. After the magnetic bearing assembly is turned on, the rotating shaft rotates, and the ring surface provided with the groove rotates in front of the distance sensor. When the groove is opposite to the probe of the distance sensor, the distance sensor and The distance between the rotating shafts is the first distance, and when the peripheral side of the rotating shaft without grooves is opposite to the probe of the distance sensor, the distance between the distance sensor and the rotating shaft is the second distance, and the groove is concave relative to the peripheral side of the rotating shaft , then the first distance is greater than the second distance. Therefore, after the groove passes through the measurement area of the distance sensor each time, the distance sensor will generate a pulse signal, that is, the rotating shaft rotates one circle, and then the rotational speed of the rotating shaft can be determined according to the pulse signal.
  • the distance sensor includes N first sensors and N second sensors having the same number as the first sensors, where N is an integer greater than 1, that is, at least two pairs of first sensors and second sensors are provided. Both the first sensor and the second sensor are arranged on the same first circle with the axis of the rotating shaft as the axis, and measure the distance between itself and the rotating shaft at different positions of the first circle, and the measuring direction is the direction of the first circle. radial direction.
  • N first sensors are combined into a first measurement group
  • N second sensors are combined into a second measurement group.
  • first step the first distance information between the first sensor and the rotating shaft is obtained by the first sensor
  • second distance information between the second sensor and the rotating shaft is obtained by the second sensor
  • the distance data measured by the N first sensors in the first measurement group are superimposed to obtain the first distance information
  • the distance data measured by the N second sensors in the second measurement group are superimposed to obtain the first distance information
  • the rotational position information of the groove is determined according to the first distance information and the second distance information. In this case, it is determined via the difference between the first distance value and the second distance value whether the groove has turned into the measuring range of a certain distance sensor.
  • the rotational speed of the rotating shaft is determined according to the determined position information of the groove.
  • the current rotational speed of the rotating shaft can be determined according to the interval between any two distance sensors when the groove rotates and the preset angle difference between the two sensors. This rotational speed will not be affected by the radial fluctuation of the rotating shaft, and the accuracy and High reliability, thereby improving measurement reliability.
  • the technical effects of optimizing the structure of the magnetic bearing assembly, improving the measurement accuracy of the rotor speed, improving the control accuracy of the magnetic bearing assembly, and reducing the failure rate of the magnetic bearing assembly are achieved.
  • At least one embodiment of the present disclosure provides a control device for a magnetic bearing assembly.
  • the control device for the magnetic bearing assembly includes: an acquisition unit, configured to acquire first distance information between the first sensor and the rotating shaft, and the second sensor and the The second distance information between the rotating shafts; the first determining unit is used to determine the position information of the groove according to the first distance information and the second distance information; the second determining unit is used to determine the rotational speed of the rotating shaft according to the position information.
  • the magnetic bearing assembly includes a stator and a rotor arranged around the stator. During operation, the rotor rotates under the action of the stator to generate power.
  • a rotating shaft is provided in the magnetic bearing assembly, and the rotating shaft may be a part of the rotor, or a power output shaft coaxially connected with the rotor, as long as the rotating shaft and the rotor rotate synchronously.
  • grooves are provided on the peripheral side of the rotating shaft, and a distance sensor is also arranged in the magnetic bearing assembly. It is arranged opposite to the annular surface provided with the groove on the rotating shaft.
  • the distance sensor can measure the distance between itself and the surface of the rotating shaft. After the magnetic bearing assembly is turned on, the rotating shaft rotates, and the ring surface provided with the groove rotates in front of the distance sensor. When the groove is opposite to the probe of the distance sensor, the distance sensor and The distance between the rotating shafts is the first distance, and when the peripheral side of the rotating shaft without grooves is opposite to the probe of the distance sensor, the distance between the distance sensor and the rotating shaft is the second distance, and the groove is concave relative to the peripheral side of the rotating shaft , then the first distance is greater than the second distance. Therefore, after the groove passes through the measurement area of the distance sensor each time, the distance sensor will generate a pulse signal, that is, the rotating shaft rotates one circle, and then the rotational speed of the rotating shaft can be determined according to the pulse signal.
  • the distance sensor includes N first sensors and N second sensors having the same number as the first sensors, where N is an integer greater than 1, that is, at least two pairs of first sensors and second sensors are provided. Both the first sensor and the second sensor are arranged on the same first circle with the axis of the rotating shaft as the axis, and measure the distance between itself and the rotating shaft at different positions of the first circle, and the measuring direction is the direction of the first circle. radial direction.
  • N first sensors are combined into a first measurement group
  • N second sensors are combined into a second measurement group.
  • the control device of the magnetic bearing assembly includes an acquisition unit, a first determination unit and a second determination unit: the acquisition unit can acquire the first distance information between the first sensor and the rotating shaft from the first sensor, and simultaneously acquire the second distance information from the second sensor. Second distance information between the sensor and the shaft. Wherein, the distance data measured by the N first sensors in the first measurement group are superimposed to obtain the first distance information, and the distance data measured by the N second sensors in the second measurement group are superimposed to obtain the first distance information Two distance information.
  • the first determining unit is used for determining the rotational position information of the groove according to the first distance information and the second distance information. In this case, it is determined via the difference between the first distance value and the second distance value whether the groove has turned into the measuring range of a certain distance sensor.
  • the second determining unit determines the rotational speed of the rotating shaft according to the determined position information of the groove.
  • the current rotational speed of the rotating shaft can be determined according to the interval between any two distance sensors when the groove rotates and the preset angle difference between the two sensors. This rotational speed will not be affected by the radial fluctuation of the rotating shaft, and the accuracy and High reliability, thereby improving measurement reliability.
  • the technical effect of optimizing the structure of the magnetic bearing assembly, improving the measurement accuracy of the rotor speed, improving the control accuracy of the magnetic bearing assembly, and reducing the failure rate of the magnetic bearing assembly is realized.
  • At least one embodiment of the present disclosure provides a control device for a magnetic bearing assembly.
  • the control device for a magnetic bearing assembly includes: a memory on which programs or instructions are stored; a processor configured to implement the aforementioned technology when executing the programs or instructions Scheme of steps in a method for controlling a magnetic bearing assembly.
  • a control device for a magnetic bearing assembly includes a memory and a processor, the memory is used to store instructions or programs, and the processor is used to call and execute the instructions or programs stored in the memory to achieve Steps in the method for controlling the magnetic bearing assembly in any of the above technical solutions. Therefore, the control device has the advantages of the control method of the magnetic bearing assembly in any of the above technical solutions, and can realize the technical effects that the control method of the magnetic bearing assembly in the above technical solutions can achieve. In order to avoid repetition, it is not repeated here repeat.
  • At least one embodiment of the present disclosure provides a readable storage medium on which programs or instructions are stored, and when the programs or instructions are executed by a processor, the steps of the method for controlling the magnetic bearing assembly in the foregoing technical solution are implemented.
  • a readable storage medium is proposed, and instructions or programs that can be called and executed by a processor are stored on the readable storage medium.
  • the processor executes the instructions or programs, any of the above can be realized. Steps in a method for controlling a magnetic bearing assembly in a technical solution. Therefore, the readable storage medium has the advantages of the control method of the magnetic bearing assembly in any of the above technical solutions, and can realize the technical effects that can be achieved by the control method of the magnetic bearing assembly in the above technical solutions. In order to avoid repetition, here No longer.
  • At least one embodiment of the present disclosure provides a magnetic bearing assembly, which includes: the control device for the magnetic bearing assembly in the aforementioned technical solution; and/or the readable storage medium in the aforementioned technical solution.
  • the magnetic bearing assembly includes the magnetic bearing assembly control device in the aforementioned technical solution and/or the readable storage medium in the aforementioned technical solution. Therefore, the magnetic bearing assembly has the advantages of the control device of the magnetic bearing assembly and/or the readable storage medium in any of the above technical solutions, and can realize the advantages of the control device of the magnetic bearing assembly and/or the readable storage medium in the above technical solutions.
  • the technical effects that can be achieved are not repeated here to avoid repetition.
  • At least one embodiment of the present disclosure provides a compressor, including: the magnetic bearing assembly in any one of the foregoing technical solutions.
  • the compressor has the advantages of the magnetic bearing assembly in any of the above technical solutions, and can achieve the technical effects that the magnetic bearing assembly in the above technical solutions can achieve. In order to avoid repetition, details are not repeated here.
  • At least one embodiment of the present disclosure provides an air conditioner, and the air conditioner includes: the compressor in the above technical solution.
  • an air conditioner including the compressor in the aforementioned technical solution is proposed. Therefore, the air conditioner has the advantages of the compressor in the above technical solution, and can realize the technical effects that the compressor in the above technical solution can achieve. In order to avoid repetition, details are not repeated here.
  • FIG. 1 shows one of the structural schematic diagrams of a magnetic bearing assembly according to some embodiments of the present disclosure
  • Fig. 2 shows the second structural schematic diagram of a magnetic bearing assembly according to some embodiments of the present disclosure
  • FIG. 3 shows an output waveform diagram of a distance sensor according to some embodiments of the present disclosure
  • Fig. 4 shows a flowchart of a control method of a magnetic bearing assembly according to some embodiments of the present disclosure
  • Fig. 5 shows one of the structural block diagrams of the control device of the magnetic bearing assembly according to some embodiments of the present disclosure
  • Fig. 6 shows the second structural block diagram of the control device of the magnetic bearing assembly according to some embodiments of the present disclosure.
  • 100 magnetic bearing assembly 110 rotating shaft, 112 groove, 120 first sensor, 122 third sensor, 124 fourth sensor, 130 second sensor, 132 fifth sensor, 134 sixth sensor, 140 positioning piece.
  • a magnetic bearing assembly, a control method thereof, a control device, a compressor, and an air conditioner according to some embodiments of the present disclosure are described below with reference to FIGS. 1 to 6 .
  • the magnetic bearing assembly 100 includes: a rotating shaft 110, a groove 112 is provided on the peripheral side of the rotating shaft 110;
  • the sensor is arranged on the peripheral side of the rotating shaft 110, opposite to the ring surface provided with the groove 112 on the rotating shaft 110, and is located on the first circle.
  • the distance sensor includes: N first sensors 120; N second sensors 130, On the first circle, the first sensors 120 and the second sensors 130 are arranged alternately; wherein, N is an integer greater than 1; the center of the first circle is located on the axis of the rotating shaft 110, and the plane where the first circle is located is perpendicular to the axis of the rotating shaft 110 axis.
  • the present disclosure proposes a magnetic bearing assembly 100.
  • the magnetic bearing assembly 100 includes a stator and a rotor disposed around the stator. During operation, the rotor rotates under the action of the stator to generate power.
  • the magnetic bearing assembly 100 is provided with a rotating shaft 110.
  • the rotating shaft 110 can be a part of the rotor, or a power output shaft coaxially connected with the rotor, as long as the rotating shaft 110 and the rotor rotate synchronously.
  • a groove 112 is provided on the peripheral side of the rotating shaft 110, and a distance sensor is also arranged in the magnetic bearing assembly 100. The measuring end on the sensor is arranged opposite to the ring surface on which the groove 112 is arranged on the rotating shaft 110 .
  • the distance sensor can measure the distance between itself and the surface of the rotating shaft 110. After the magnetic bearing assembly 100 is turned on, the rotating shaft 110 rotates, and the ring surface provided with the groove 112 rotates in front of the distance sensor immediately, and the groove 112 is opposite to the probe of the distance sensor. , the distance between the distance sensor and the rotating shaft 110 is the first distance, and when the side of the rotating shaft 110 without the groove 112 is opposite to the probe of the distance sensor, the distance between the distance sensor and the rotating shaft 110 is the second distance.
  • the groove 112 is concave relative to the peripheral surface of the rotating shaft 110 , and the first distance is greater than the second distance. Therefore, each time the groove 112 passes through the measurement area of the distance sensor, the distance sensor will generate a pulse signal, that is, the rotating shaft 110 rotates one circle, and then the rotational speed of the rotating shaft 110 can be determined according to the pulse signal.
  • a single or two distance sensors are mostly used to detect the rotational speed of the rotating shaft 110, but the rotating shaft 110 inevitably undergoes radial fluctuations during the working process, and the distance sensor also measures itself in the radial direction of the rotating shaft 110.
  • the distance between the rotating shafts 110 Therefore, when radial fluctuation occurs on the rotating shaft 110, the distance between the distance sensor and the rotating shaft 110 will change significantly due to the fluctuation, and a corresponding pulse signal generated by the fluctuation will be output, and the pulse signal will affect the speed determination of the rotating shaft 110 , so that the system obtains a speed value that is inconsistent with the actual speed.
  • the distance sensor includes N first sensors 120 and N second sensors 130 having the same number as the first sensors 120, and N is an integer greater than 1, that is, at least two pairs of first sensors 120 and second sensors 130 are arranged.
  • the first sensor 120 and the second sensor 130 are both arranged on the same first circle with the axis of the rotating shaft 110 as the axis, and measure the distance between itself and the rotating shaft 110 at different positions of the first circle, and the measuring direction is then The radial direction of the first circle.
  • N first sensors 120 are combined into a first measurement group
  • N second sensors 130 are combined into a second measurement group.
  • the distance data measured by the N first sensors 120 in the first measurement group are superimposed to obtain the first distance value
  • the distance data measured by the N second sensors 130 in the second measurement group are superimposed to obtain the second distance value. It is then determined via the difference between the first distance value and the second distance value whether the groove 112 has turned into the measuring range of a certain distance sensor.
  • the data measured by each distance sensor should be the same, so the first distance value and the second distance value are equal.
  • the rotating shaft 110 undergoes radial fluctuations, the rotating shaft 110 When the distance from a certain sensor increases, the distance between the sensor on the opposite side and the rotating shaft 110 will decrease correspondingly.
  • This pair of side distance compensation phenomenon can make the sum of the first distance value and the second distance
  • the values are similar to ensure that the possible error between the two is much smaller than the depth of the groove 112, thereby eliminating the influence of the radial fluctuation of the rotating shaft 110 on the rotational speed measurement.
  • the rotation position of the groove 112 can be determined by the sudden increase of the difference between the first distance value and the second distance value, so as to obtain a precise rotation speed of the rotating shaft 110 .
  • the distance sensor array defined in the present disclosure can solve the problem of eliminating the influence of the radial fluctuation of the rotating shaft 110 on the measurement of the rotational speed of the rotating shaft 110, and further solve the problems in the related art of outputting wrong pulse signals, low accuracy of rotating speed measurement, and poor working reliability of the rotating shaft 110. question.
  • the first sensors 120 and the second sensors 130 are arranged alternately.
  • This layout method can improve the distribution uniformity of the first sensor 120 and the second sensor 130, avoid the first sensor 120 or the second sensor 130 not being distributed in a certain area, and ensure that the opposite side distance compensation phenomenon can act on the first measurement group and The first distance value and the second distance value measured by the second measurement group, thereby improving measurement reliability.
  • the technical effects of optimizing the structure of the magnetic bearing assembly 100 improving the measurement accuracy of the rotor speed, improving the control accuracy of the magnetic bearing assembly 100 , and reducing the failure rate of the magnetic bearing assembly 100 are realized.
  • the distance sensors are evenly distributed on the first circle.
  • the distribution manner of the distance sensors is described in detail. Specifically, on the first circle where the distance sensors are arranged, a plurality of distance sensors are evenly distributed, that is, the alternately arranged first sensors 120 and second sensors 130 are arranged at equal intervals on the first circle. Evenly distributing the distance sensors on the basis of alternate arrangement can reduce the difference between the first distance value and the second distance value when radial fluctuation occurs on the rotating shaft 110, so as to further reduce the impact of the radial fluctuation phenomenon on the measurement accuracy of the rotational speed of the rotating shaft 110 , to ensure that the distance sensor does not output wrong pulse signals. Further, the technical effect of optimizing the layout of the distance sensor, improving the measurement accuracy and reliability of the rotational speed of the rotating shaft 110 and reducing the failure rate of the magnetic bearing assembly 100 is realized.
  • the distance sensor includes: a third sensor 122; a fourth sensor 124, and on the first circle, the angle between the third sensor 122 and the fourth sensor 124 is 180°;
  • a sensor 120 includes a third sensor 122 and a fourth sensor 124 .
  • the first sensor group 120 is composed of two sensors, the third sensor 122 and the fourth sensor 124 .
  • the included angle between the third sensor 122 and the fourth sensor 124 is 180°, that is, the third sensor 122 and the fourth sensor 124 are arranged on the same diameter.
  • the number of the first sensor 120 and the number of the second sensor 130 are the same, by limiting both the first sensor 120 and the second sensor 130 to two, the purchase cost of the sensor can be reduced on the basis of satisfying the measurement accuracy of the rotational speed.
  • the compensation effect between the two sensors can be improved; 122 and the left and right sides of the diameter of the fourth sensor 124 to further improve the effect of distance compensation and improve the accuracy of determining the direction of the groove 112 on the rotating shaft 110 . Further, the technical effect of optimizing the layout of the distance sensor, improving the measurement accuracy and reliability of the rotational speed of the rotating shaft 110 and reducing the failure rate of the magnetic bearing assembly 100 is achieved.
  • the distance sensor includes: the fifth sensor 132; the sixth sensor 134, on the first circle, the angle between the fifth sensor 132 and the third sensor 122 is 90°, the fifth sensor 132 and the third sensor 122 The range of the angle between the sixth sensors 134 is greater than or equal to 135° and less than or equal to 225°; wherein, the N second sensors 130 include the fifth sensor 132 and the sixth sensor 134 .
  • the second sensor group 130 is composed of a fifth sensor 132 and a sixth sensor 134 .
  • the included angles between the fifth sensor 132 and the third sensor 122 and the fourth sensor 124 are all 90°, that is, the fifth sensor 132 is arranged on the same side as the third sensor 122 and the fourth sensor 124.
  • the sensor 124 is located on a diametrically perpendicular diameter.
  • the sixth sensor 134 is disposed on the opposite side, and the included angle between the sixth sensor 134 and the fifth sensor 132 on the first circle must be greater than or equal to 135° and less than or equal to 225°.
  • the angle between the fifth sensor 132 and the sixth sensor 134 can be adaptively adjusted according to the actual working conditions of the rotating shaft 110.
  • the angle between the fifth sensor 132 and the sixth sensor 134 makes the fifth sensor 132 or the sixth sensor 134 correspondingly arranged in this high-frequency fluctuation direction, thereby further enhancing the measurement accuracy of the rotation speed of the rotating shaft 110 .
  • the sixth sensor 134 having an angle of 180° with the fifth sensor 132 can be optionally provided, so that the distance sensor array can be applied to most occasions. Further, the technical effect of optimizing the layout of the distance sensor, improving the measurement accuracy and reliability of the rotational speed of the rotating shaft 110 and reducing the failure rate of the magnetic bearing assembly 100 is achieved.
  • the magnetic bearing assembly 100 further includes: a positioning member 140 disposed on the peripheral side of the rotating shaft 110; a first positioning hole disposed on the positioning member 140, and the first sensor 120 is embedded in the first positioning hole Inside: the second positioning hole is set on the positioning member 140, and the second sensor 130 is embedded in the second positioning hole.
  • a positioning member 140 is also provided in the magnetic bearing assembly 100 .
  • the positioning member 140 is disposed on the peripheral side of the rotating shaft 110 and spaced apart from the rotating shaft 110 .
  • the positioning member 140 is used for positioning and installing the first sensor 120 and the second sensor 130 .
  • the positioning member 140 is provided with a first positioning hole and a second positioning hole, the first positioning hole is used for positioning and installing the first sensor 120 , and the second positioning hole is used for positioning and installing the second sensor 130 .
  • the positioning part 140 is a metal part, for example, the positioning part 140 can be made of aluminum.
  • the first sensor 120 and the second sensor 130 are embedded in the first through hole and the second through hole.
  • the electric field generated by the displacement sensor and the first sensor 120 can be prevented from moving toward the non The measuring direction extends. Therefore, the interference of the displacement sensor and the first sensor 120 on the magnetic field generated by the stator is reduced. Thereby improving the stability of the rotor rotation and reducing the probability of eccentric rotation.
  • the technical effects of optimizing the structure of the magnetic bearing assembly 100 improving the positioning accuracy and working stability of the sensor, improving the measurement accuracy of the rotational speed of the rotating shaft 110 , and improving the working reliability of the magnetic bearing assembly 100 are realized.
  • the positioning member 140 is annular, and the positioning member 140 and the rotating shaft 110 share the same axis.
  • the shape and position of the positioning member 140 are limited.
  • the positioning member 140 is an annular positioning member 140, which may be an aluminum ring.
  • the positioning member 140 is sheathed on the outer peripheral side of the rotating shaft 110 , spaced apart from the rotating shaft 110 , and the axis of the annular positioning member 140 coincides with the axis of the rotating shaft 110 .
  • both the first positioning hole and the second positioning hole extend in the radial direction of the positioning member 140 .
  • both the first positioning hole and the second positioning hole on the positioning member 140 extend in the radial direction of the positioning member 140 .
  • the first positioning hole and the second positioning hole also extend in the radial direction of the rotating shaft 110 , wherein the openings of the first positioning hole and the second positioning hole both face the rotating shaft 110 .
  • the radially extending first positioning hole and the second positioning hole are provided so that the measuring ends of the first sensor 120 and the second sensor 130 can be aligned with the peripheral side of the rotating shaft 110 in the radial direction. Avoid positioning deviation from affecting the measurement accuracy of the first sensor 120 and the second sensor 130, and improve the reliability of the measured data. Further, the technical effect of optimizing the positioning structure of the sensor, improving the reliability and accuracy of the rotation speed measurement of the rotating shaft 110 , and improving the working stability of the magnetic bearing assembly 100 is realized.
  • the magnetic bearing assembly 100 further includes: an electric control, disposed on the positioning member 140 and connected to the first sensor 120 and the second sensor 130 .
  • an electrical control is also provided in the magnetic bearing assembly 100 .
  • a positioning groove is provided on the positioning member 140 , and the electric control is inserted into the positioning groove, so as to support and position the electric control through the positioning member 140 .
  • one of the end faces of the annular positioning member 140 is provided with an annular groove around the axis, the annular groove together with the first positioning hole, the second positioning hole and the positioning groove, and then the first sensor 120 and the second sensor 130 are respectively embedded in the Behind the inside of the first positioning hole and the second positioning hole, part of the first sensor 120 and the second sensor 130 are located in the annular groove.
  • the magnetic bearing assembly 100 is also provided with an annular cover, which can be covered on the annular groove, on the one hand to prevent the electric field generated by the sensor from extending outward, and on the other hand to prevent the connecting wire from coming out of the annular groove . Further, the technical effect of optimizing the structure of the positioning member 140 , improving the working safety and reliability of the magnetic bearing assembly 100 , and reducing the failure rate of the magnetic bearing assembly 100 is realized.
  • At least one embodiment of the present disclosure provides a method for controlling a magnetic bearing assembly, which is used to control the magnetic bearing assembly in any of the above embodiments.
  • the method for controlling the magnetic bearing assembly includes:
  • Step 402 acquiring first distance information between the first sensor and the rotating shaft, and second distance information between the second sensor and the rotating shaft;
  • Step 404 determine the position information of the groove according to the first distance information and the second distance information
  • Step 406 determine the rotational speed of the rotating shaft according to the position information.
  • the magnetic bearing assembly includes a stator and a rotor arranged around the stator. During operation, the rotor rotates under the action of the stator to generate power.
  • a rotating shaft is provided in the magnetic bearing assembly, and the rotating shaft may be a part of the rotor, or a power output shaft coaxially connected with the rotor, as long as the rotating shaft and the rotor rotate synchronously.
  • grooves are provided on the peripheral side of the rotating shaft, and a distance sensor is also arranged in the magnetic bearing assembly. It is arranged opposite to the annular surface provided with the groove on the rotating shaft.
  • the distance sensor can measure the distance between itself and the surface of the rotating shaft. After the magnetic bearing assembly is turned on, the rotating shaft rotates, and the ring surface provided with the groove rotates in front of the distance sensor. When the groove is opposite to the probe of the distance sensor, the distance sensor and The distance between the rotating shafts is the first distance, and when the peripheral side of the rotating shaft without grooves is opposite to the probe of the distance sensor, the distance between the distance sensor and the rotating shaft is the second distance, and the groove is concave relative to the peripheral side of the rotating shaft , then the first distance is greater than the second distance. Therefore, after the groove passes through the measurement area of the distance sensor each time, the distance sensor will generate a pulse signal, that is, the rotating shaft rotates one circle, and then the rotational speed of the rotating shaft can be determined according to the pulse signal.
  • the distance sensor includes N first sensors and N second sensors having the same number as the first sensors, where N is an integer greater than 1, that is, at least two pairs of first sensors and second sensors are provided. Both the first sensor and the second sensor are arranged on the same first circle with the axis of the rotating shaft as the axis, and measure the distance between itself and the rotating shaft at different positions of the first circle, and the measuring direction is the direction of the first circle. radial direction.
  • N first sensors are combined into a first measurement group
  • N second sensors are combined into a second measurement group.
  • first step the first distance information between the first sensor and the rotating shaft is obtained by the first sensor
  • second distance information between the second sensor and the rotating shaft is obtained by the second sensor
  • the distance data measured by the N first sensors in the first measurement group are superimposed to obtain the first distance information
  • the distance data measured by the N second sensors in the second measurement group are superimposed to obtain the first distance information
  • the rotational position information of the groove is determined according to the first distance information and the second distance information. In this case, it is determined via the difference between the first distance value and the second distance value whether the groove has turned into the measuring range of a certain distance sensor.
  • the rotational speed of the rotating shaft is determined according to the determined position information of the groove.
  • the current rotational speed of the rotating shaft can be determined according to the interval between any two distance sensors when the groove rotates and the preset angle difference between the two sensors. This rotational speed will not be affected by the radial fluctuation of the rotating shaft, and the accuracy and High reliability, thereby improving measurement reliability.
  • the technical effects of optimizing the structure of the magnetic bearing assembly, improving the measurement accuracy of the rotor speed, improving the control accuracy of the magnetic bearing assembly, and reducing the failure rate of the magnetic bearing assembly are achieved.
  • the control device 500 of the magnetic bearing assembly includes: an acquisition unit 502 configured to acquire the first distance information, and the second distance information between the second sensor and the rotating shaft; the first determination unit 504 is used to determine the position information of the groove according to the first distance information and the second distance information; the second determination unit 506 is used to determine the position information of the groove according to the first distance information and the second distance information; The position information determines the rotational speed of the shaft.
  • the magnetic bearing assembly includes a stator and a rotor arranged around the stator. During operation, the rotor rotates under the action of the stator to generate power.
  • a rotating shaft is provided in the magnetic bearing assembly, and the rotating shaft may be a part of the rotor, or a power output shaft coaxially connected with the rotor, as long as the rotating shaft and the rotor rotate synchronously.
  • grooves are provided on the peripheral side of the rotating shaft, and a distance sensor is also arranged in the magnetic bearing assembly. It is arranged opposite to the annular surface provided with the groove on the rotating shaft.
  • the distance sensor can measure the distance between itself and the surface of the rotating shaft. After the magnetic bearing assembly is turned on, the rotating shaft rotates, and the ring surface provided with the groove rotates in front of the distance sensor. When the groove is opposite to the probe of the distance sensor, the distance sensor and The distance between the rotating shafts is the first distance, and when the peripheral side of the rotating shaft without grooves is opposite to the probe of the distance sensor, the distance between the distance sensor and the rotating shaft is the second distance, and the groove is concave relative to the peripheral side of the rotating shaft , then the first distance is greater than the second distance. Therefore, after the groove passes through the measurement area of the distance sensor each time, the distance sensor will generate a pulse signal, that is, the rotating shaft rotates one circle, and then the rotational speed of the rotating shaft can be determined according to the pulse signal.
  • the distance sensor includes N first sensors and N second sensors having the same number as the first sensors, where N is an integer greater than 1, that is, at least two pairs of first sensors and second sensors are provided. Both the first sensor and the second sensor are arranged on the same first circle with the axis of the rotating shaft as the axis, and measure the distance between itself and the rotating shaft at different positions of the first circle, and the measuring direction is the direction of the first circle. radial direction.
  • N first sensors are combined into a first measurement group
  • N second sensors are combined into a second measurement group.
  • the control device 500 of the magnetic bearing assembly includes an acquisition unit 502, a first determination unit 504, and a second determination unit 506: the acquisition unit 502 can acquire the first distance information between the first sensor and the rotating shaft from the first sensor, while the second The sensor acquires second distance information between the second sensor and the rotating shaft. Wherein, the distance data measured by the N first sensors in the first measurement group are superimposed to obtain the first distance information, and the distance data measured by the N second sensors in the second measurement group are superimposed to obtain the first distance information Two distance information.
  • the first determining unit 504 is configured to determine the rotational position information of the groove according to the first distance information and the second distance information.
  • the groove has turned into the measuring range of a certain distance sensor.
  • the data measured by each distance sensor should be the same, so the first distance value and the second distance value are equal.
  • This opposite side distance compensation phenomenon can make the summed first distance value and the second distance value close to each other, ensuring that The possible error between the two is much smaller than the depth of the groove, thereby eliminating the influence of the radial fluctuation of the rotating shaft on the measurement of the rotational speed.
  • the second determining unit 506 determines the rotational speed of the rotating shaft according to the determined position information of the groove. Specifically, the current rotational speed of the rotating shaft can be determined according to the interval between any two distance sensors when the groove rotates and the preset angle difference between the two sensors. This rotational speed will not be affected by the radial fluctuation of the rotating shaft, and the accuracy and High reliability, thereby improving measurement reliability. Then realize the technical effects of optimizing the structure of the magnetic bearing assembly, improving the measurement accuracy of the rotor speed, improving the control accuracy of the magnetic bearing assembly, and reducing the failure rate of the magnetic bearing assembly.
  • the control device 600 for a magnetic bearing assembly includes: a memory 602 on which programs or instructions are stored; a processor 604 configured to The steps of the method for controlling the magnetic bearing assembly in the foregoing embodiments are realized when executing programs or instructions.
  • a control device 600 of a magnetic bearing assembly includes a memory 602 and a processor 604, the memory 602 is used to store instructions or programs, and the processor 604 is used to call and execute the stored in the memory 602 instructions or programs to implement the steps of the method for controlling the magnetic bearing assembly in any of the above embodiments. Therefore, the control device has the advantages of the control method of the magnetic bearing assembly in any of the above-mentioned embodiments, and can realize the technical effects that the control method of the magnetic bearing assembly in the above-mentioned embodiments can achieve. In order to avoid repetition, it is not repeated here repeat.
  • At least one embodiment of the present disclosure provides a readable storage medium on which programs or instructions are stored. When the programs or instructions are executed by a processor, the steps of the method for controlling a magnetic bearing assembly as in the foregoing embodiments are implemented.
  • a readable storage medium is proposed, and instructions or programs that can be called and executed by a processor are stored on the readable storage medium.
  • the processor executes the instructions or programs, any of the above can be realized. Steps of a method for controlling a magnetic bearing assembly in an embodiment. Therefore, the readable storage medium has the advantages of the control method of the magnetic bearing assembly in any of the above embodiments, and can realize the technical effects that the control method of the magnetic bearing assembly in the above embodiments can achieve. In order to avoid repetition, here No longer.
  • At least one embodiment of the present disclosure provides a magnetic bearing assembly, which includes: the control device for the magnetic bearing assembly in the foregoing embodiments; and/or the readable storage medium in the foregoing embodiments.
  • a magnetic bearing assembly including the control device for the magnetic bearing assembly in the foregoing embodiments and/or the readable storage medium in the foregoing embodiments is proposed. Therefore, the magnetic bearing assembly has the advantages of the control device and/or the readable storage medium of the magnetic bearing assembly in any of the above-mentioned embodiments, and can realize the advantages of the control device of the magnetic bearing assembly and/or the readable storage medium in the above-mentioned embodiments.
  • the technical effects that can be achieved are not repeated here to avoid repetition.
  • At least one embodiment of the present disclosure provides a compressor, including: the magnetic bearing assembly in any one of the foregoing embodiments.
  • the compressor has the advantages of the magnetic bearing assembly in any of the above embodiments, and can achieve the technical effects that the magnetic bearing assembly in the above embodiments can achieve. To avoid repetition, details are not repeated here.
  • At least one embodiment of the present disclosure provides an air conditioner, and the air conditioner includes: the compressor in the above embodiments.
  • the air conditioner includes the compressor in the foregoing embodiments. Therefore, the air conditioner has the advantages of the compressor in the above-mentioned embodiment, and can realize the technical effects that the compressor in the above-mentioned embodiment can achieve. To avoid repetition, details are not repeated here.
  • the term “plurality” refers to two or more than two. Unless otherwise clearly defined, the orientation or positional relationship indicated by the terms “upper”, “lower” and so on is based on the orientation described in the accompanying drawings. or positional relationship, are only for the convenience of describing the present disclosure and simplifying the description, but do 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 construed as limiting the present disclosure; “Connection”, “installation” and “fixation” should be understood in a broad sense.
  • connection can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or through an intermediary indirectly connected.

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Abstract

一种磁轴承组件及其控制方法、控制装置、压缩机和空调器。磁轴承组件包括：转轴（110），转轴的周侧面上设有凹槽（112）；距离传感器，设于转轴的周侧，与转轴上设有凹槽的环面相对设置，且位于第一圆上，距离传感器包括：N个第一传感器（120）；N个第二传感器（130），在第一圆上，第一传感器和第二传感器交替设置；其中，N为大于1的整数；第一圆的圆心位于转轴的轴线上，第一圆所处平面垂直于所述转轴的轴线。该距离传感器阵列可以解决消除转轴径向波动对转轴转速测量的影响，进而解决相关技术中输出错误脉冲信号，转速测量精度低，转轴工作可靠性差的技术问题。

Description

磁轴承组件及其控制方法、控制装置、压缩机和空调器
本公开要求于2022年01月06日提交到中国国家知识产权局、申请号为“202210012927.1”、申请名称为“磁轴承组件及其控制方法、控制装置、压缩机和空调器”的中国专利申请的优先权，其全部内容通过引用结合在本公开中。
技术领域
本公开涉及压缩机技术领域，具体而言，涉及一种磁轴承组件及其控制方法、控制装置、压缩机和空调器。
背景技术
磁悬浮压缩机因其噪声小、维护成本低、运行效率高、机身轻巧、启动电流小等特点被广泛应用在空调系统中。相关技术中，在通过测距探头检测转轴的转速时，转轴的径向波动会造成速度信号误差，降低转轴转速测量精度，影响压缩机正常工作。
因此，如何设计出一种可攻克上述技术缺陷的磁轴承组件成为了目前亟待解决的技术问题。
申请内容
本公开旨在至少解决现有技术中存在的技术问题之一。
为此，本公开的至少一个实施方式中提出了一种磁轴承组件。
本公开的至少一个实施方式中提出了一种磁轴承组件的控制方法。
本公开的至少一个实施方式中提出了一种磁轴承组件的控制装置。
本公开的至少一个实施方式中提出了一种磁轴承组件的控制装置。
本公开的至少一个实施方式中提出了一种可读存储介质。
本公开的至少一个实施方式中提出了一种磁轴承组件。
本公开的至少一个实施方式中提出了一种压缩机。
本公开的至少一个实施方式中提出了一种空调器。
有鉴于此，本公开的至少一个实施方式中提供了一种磁轴承组件，磁轴承组件包括：转轴，转轴的周侧面上设有凹槽；距离传感器，设于转轴的周侧，与转轴上设有凹槽的环面相对设置，且位于第一圆上，距离传感器包括：N个第一传感器；N个第二传感器，在第一圆上，第一传感器和第二传感器交替设置；其中，N为大于1的整数；第一圆的圆心位于转轴的轴线上，第一圆所处平面垂直于所述转轴的轴线。
本公开提出了一种磁轴承组件，磁轴承组件包括定子以及环绕定子设置的转子，工作中转子在定子的作用下转动，以产生动力。在此基础上，磁轴承组件中设置有转轴，转轴可以为转子的一部分，也可以是与转子同轴连接的动力输出轴，满足转轴和转子同步转动即可。其中，转轴的周侧面上设置有凹槽，且磁轴承组件中还设置有距离传感器，距离传感器设置在转轴的周侧，也就是与转轴周侧面相对的区域中，且距离传感器上的测量端与转轴上设置有凹槽的环面相对设置。距离传感器可以测量自身与转轴表面之间的距离，磁轴承组件开启后，转轴转动，设置有凹槽的环面随即在距离传感器前方转动，在凹槽与距离传感器的探头相对时，距离传感器和转轴之间的距离为第一距离，在未设置凹槽的转轴周侧面与距离传感器的探头相对时，距离传感器和转轴之间的距离为第二距离，凹槽相对于转轴的周侧面内凹，则第一距离大于第二距离。因此，在凹槽每次穿过距离传感器的测量区域后，距离传感器会产生一个脉冲信号，即转轴转动一圈，随即可根据该脉冲信号确定出转轴的转速。
相关技术中，多采用单个或两个距离传感器检测转轴的转速，但转轴在工作过程中不可避免的会发生径向波动，而距离传感器同样是在转轴的径向方向上测量自身与转轴间的距离。因此，在转轴出现径向波动时，距离传感器和转轴之间的距离会因波动而发生明显变化，对应输出一个因波动所产生的脉冲信号，该脉冲信号则会影响转轴的转速判定，使系统得出与实际转速不符的转速值。例如，当转轴的两侧对称设置两个距离传感器时，若转轴朝向原理其中一个距离传感器的方向波动时，该距离传感器所测得的距离会突增，与凹槽转动至该距离传感器前方时所产生的距离突增类似，以至于距离传感器会在凹槽没有转动至前方前输出错误的脉冲信号。从而产生转轴转速测量精度低，转轴控制可靠性差，转动稳定性低的技术问题。
对此，本公开对距离传感器做出了调整。具体地，距离传感器包括N个第一传感器和数目与第一传感器相同的N个第二传感器，N为大于1的整数，也就是设置至少两对第一传感器和第二传感器。第一传感器和第二传感器均设置在以转轴的轴线为轴的同一个第一圆上，在该第一圆的不同位置测量自身与转轴之间的距离，测量方向则为该第一圆的径向方向。其中，N个第一传感器组合为第一测量组，N个第二传感器组合为第二测量组。工作过程中，将第一测量组中的N个第一传感器所测得的距离数据叠加，得到第一距离值，将第二测量组中的N个第二传感器所测得的距离数据叠加，得到第二距离值。其后通过第一距离值和第二距离值间的差值确定凹槽是否转入某一距离传感器的测量区域中。在该测量结构下，转轴未发生径向波动时，每个距离传感器所测得的数据应相同，因此第一距离值和第二距离值相等，在转轴发生径向波动时，转轴与某一传感器之间的距离增大，则相对一侧的传感器和转轴之间的距离则会对应减小，该对侧距离补偿现象可以使求和得到的第一距离值和第二距离值相近，确保二者间可能产生的误差远小于凹槽的深度，从而消除转轴径向波动对转速测量的影响。对应地，当凹槽转入某一距离传感器的测量区域时，该测量组的求和距离值中增加了凹槽的深度，而另一组的求和距离值无法弥补这一深度，随即可通过第一距离值和第二距离值的差值的突增来确定凹槽转动的位置，以得到精准的转轴转速。由此可见，本公开所限定的距离传感器阵列可以解决消除转轴径向波动对转轴转速测量的影响，进而解决相关技术中输出错误脉冲信号，转速测量精度低，转轴工作可靠性差的技术问题。
在此基础上，在距离传感器所分布的第一圆上，第一传感器和第二传感器交替设置。该布局方式可以提升第一传感器和第二传感器的分布均匀性，避免某一区域中未分布第一传感器或第二传感器，确保对侧距离补偿现象可以作用在第一测量组和第二测量组所测得的第一距离值和第二距离值上，从而提升测量可靠性。进而实现优化磁轴承组件结构，提升转子转速测量精度，提升磁轴承组件控制精度，降低磁轴承组件故障率的技术效果。
另外，本公开提供的上述磁轴承组件还可以具有如下附加技术特征：
在上述技术方案中，距离传感器在第一圆上均匀分布。
在该技术方案中，对距离传感器的分布方式做出展开说明。具体地，在设 置距离传感器的第一圆上，多个距离传感器均匀分布，也就是交替设置的第一传感器和第二传感器在该第一圆上等间隔角度设置。在交替设置的基础上均匀分布距离传感器可以在转轴出现径向波动时减少第一距离值和第二距离值之间的差值，以进一步降低径向波动现象对转轴转速测量精度的影响，确保距离传感器不会输出错误的脉冲信号。进而实现优化距离传感器布局，提升转轴转速测量精度和可靠性，降低磁轴承组件故障率的技术效果。
在上述任一技术方案中，距离传感器包括：第三传感器；第四传感器，在第一圆上，第三传感器和第四传感器间的夹角为180°；其中，N个第一传感器包括第三传感器和第四传感器。
在该技术方案中，提出了一种具体实施方案。在该方案中，第一传感器组由第三传感器和第四传感器两个传感器组成。并且，在设置距离传感器的第一圆上，第三传感器和第四传感器之间的夹角为180°，也就是第三传感器和第四传感器设置在同一直径上。第一传感器和第二传感器的数目相同，通过将第一传感器和第二传感器均限制为两个，可以在满足转速测量精度的基础上压缩传感器的采购成本。通过将第三传感器和第四传感器分布在同一条直径上，一方面可以提升这两个传感器之间的补偿效果，另一方面可以使两个第二传感器分别分布在设置第三传感器和第四传感器的直径的左右两侧，以进一步提升距离补偿效果，提升转轴上凹槽朝向判定的精度。进而实现优化距离传感器布局，提升转轴转速测量精度和可靠性，降低磁轴承组件故障率的技术效果。
在上述任一技术方案中，距离传感器包括：第五传感器；第六传感器，在第一圆上，第五传感器与第三传感器间的夹角为90°，第五传感器和第六传感器间的夹角的范围为：大于等于135°，且小于等于225°；其中，N个第二传感器包括第五传感器和第六传感器。
在该技术方案中，承接前述技术方案，对两个第二传感器的分布方式做出限定。具体地，第二传感器组由第五传感器和第六传感器组成。在设置距离传感器的第一圆上，第五传感器与第三传感器和第四传感器之间的夹角均为90°，也就是第五传感器设置在与第三传感器和第四传感器所在直径向垂直的直径上。在此基础上，第六传感器设置在对侧，第六传感器和第五传感器在第一圆上的夹角需大于等于135°且小于等于225°。通过限定第五传感器和第 六传感器之间的距离可以确保对侧距离补偿的效果，避免超出该角度区间的分布方式在转轴出现径向波动时错误的产生脉冲信号，从而提升转轴转速的测量精度。其中，第五传感器和第六传感器间的角度可以根据转轴的实际工况做适应性调整，例如在通过工作数据确定转轴朝某一方向的波动频率较高时，可通过调整第五传感器和第六传感器间的角度使第五传感器或第六传感器对应设置在这一高频波动方向上，从而进一步强化转轴转速的测量精度。具体可选设置与第五传感器间夹角为180°的第六传感器，以使该距离传感器阵列可适用于多数场合。进而实现优化距离传感器布局，提升转轴转速测量精度和可靠性，降低磁轴承组件故障率的技术效果。
在上述任一技术方案中，磁轴承组件还包括：定位件，设于转轴的周侧；第一定位孔，设于定位件上，第一传感器嵌设于第一定位孔内；第二定位孔，设于定位件上，第二传感器嵌设于第二定位孔内。
在该技术方案中，磁轴承组件中还设置有定位件。定位件设置在转轴的周侧，且与转轴间隔设置，定位件用于定位和安装第一传感器和第二传感器。具体地，定位件上设置有第一定位孔和第二定位孔，第一定位孔用于定位安装第一传感器，第二定位孔用于定位安装第二传感器。通过设置该定位件，使第一传感器和第二传感器可以精准定位在转轴周侧的预定安装位置上，以提升装配精度和工作稳定性。且设置该定位件可以降低第一传感器和第二传感器的装配难度。其中，定位件为金属件，例如可以通过铝制备定位件。且第一传感器和第二传感器嵌设在第一通孔和第二通孔内部。通过设置金属定位件，并将第二传感器和第一传感器嵌入其内部，可以在通过定位孔的开口满足测量需求的基础上，阻止移传感器和第一传感器所产生的电场向非测量方向延伸。从而降低移传感器和第一传感器对定子所产生磁场的干扰。从而提升转子转动的稳定性，降低偏心转动概率。进而实现了优化磁轴承组件结构，提升传感器定位精度和工作稳定性，提升转轴转速测量精度，提升磁轴承组件工作可靠性的技术效果。
在上述任一技术方案中，定位件呈环形，定位件与转轴共用同一轴线。
在该技术方案中，对定位件的形状和位置做出了限定。具体地，定位件为环形定位件，可选择为铝环。在此基础上，定位件套设在转轴的外周侧，与转 轴间隔设置，且环形定位件的轴线与转轴的轴线重合。通过设置同轴的环形定位件，可以缩减多个第一传感器中任意两个第一传感器与转轴轴线距离间的差值，同理还可以缩减多个第二传感器中任意两个第二传感器与转轴轴线距离间的差值。以避免该定位所产生的距离差值影响转轴转速和转轴位移的测量精度。从而实现优化传感器定位结构，提升转轴转速测量可靠性和测量精准度，提升磁轴承组件工作稳定性的技术效果。
在上述任一技术方案中，第一定位孔和第二定位孔均在定位件的径向方向延伸。
在该技术方案中，定位件上的第一定位孔和第二定位孔均在定位件的径向方向上延伸。因环形定位件和转轴同轴，所以第一定位孔和第二定位孔同样是在转轴的径向方向上延伸，其中第一定位孔和第二定位孔的开口均朝向转轴。设置径向延伸的第一定位孔和第二定位孔，使第一传感器和第二传感器的测量端可以在径向方向上对准转轴的周侧面。避免定位偏差影响第一传感器和第二传感器的测量精度，提升测量所得数据的可靠性。进而实现优化传感器定位结构，提升转轴转速测量可靠性和精准度，提升磁轴承组件工作稳定性的技术效果。
在上述任一技术方案中，磁轴承组件还包括：电控件，设于定位件上，与第一传感器和第二传感器相连接。
在该技术方案中，磁轴承组件中还设置有电控件。具体地，定位件上设置有定位槽，电控件插接在定位槽中，以通过定位件支撑定位电控件。其中，环形定位件的其中一个端面上设置有围绕轴线的环形槽，环形槽连同第一定位孔、第二定位孔和定位槽，再将第一传感器和第二传感器分别嵌设在第一定位孔和第二定位孔内部后，部分第一传感器和第二传感器位于环形槽内。通过设置该环形操，可以为电控件与传感器之间的连接线路提供布置空间，避免连接线延伸至定位件外部，防止连接线干扰转轴转动。在此基础上，磁轴承组件还设置有环形的盖体，盖体可以盖合在环形槽上，一方面阻止传感器所产生的电场向外延伸，另一方面可以避免连接线由环形槽脱出。进而实现优化定位件结构，提升磁轴承组件工作安全性合可靠性，降低磁轴承组件故障率的技术效果。
本公开的至少一个实施方式中提供了一种磁轴承组件的控制方法，用于 控制如上述任一技术方案中的磁轴承组件，磁轴承组件的控制方法包括：
获取第一传感器和转轴间的第一距离信息，以及第二传感器和转轴间的第二距离信息；
根据第一距离信息和第二距离信息确定凹槽的位置信息；
根据位置信息确定转轴的转速。
在该技术方案中，限定了一种用于控制上述任一技术方案中的磁轴承组件工作的控制方法。其中，磁轴承组件包括定子以及环绕定子设置的转子，工作中转子在定子的作用下转动，以产生动力。在此基础上，磁轴承组件中设置有转轴，转轴可以为转子的一部分，也可以是与转子同轴连接的动力输出轴，满足转轴和转子同步转动即可。其中，转轴的周侧面上设置有凹槽，且磁轴承组件中还设置有距离传感器，距离传感器设置在转轴的周侧，也就是与转轴周侧面相对的区域中，且距离传感器上的测量端与转轴上设置有凹槽的环面相对设置。距离传感器可以测量自身与转轴表面之间的距离，磁轴承组件开启后，转轴转动，设置有凹槽的环面随即在距离传感器前方转动，在凹槽与距离传感器的探头相对时，距离传感器和转轴之间的距离为第一距离，在未设置凹槽的转轴周侧面与距离传感器的探头相对时，距离传感器和转轴之间的距离为第二距离，凹槽相对于转轴的周侧面内凹，则第一距离大于第二距离。因此，在凹槽每次穿过距离传感器的测量区域后，距离传感器会产生一个脉冲信号，即转轴转动一圈，随即可根据该脉冲信号确定出转轴的转速。
具体地，距离传感器包括N个第一传感器和数目与第一传感器相同的N个第二传感器，N为大于1的整数，也就是设置至少两对第一传感器和第二传感器。第一传感器和第二传感器均设置在以转轴的轴线为轴的同一个第一圆上，在该第一圆的不同位置测量自身与转轴之间的距离，测量方向则为该第一圆的径向方向。其中，N个第一传感器组合为第一测量组，N个第二传感器组合为第二测量组。
控制磁轴承组件工作的具体步骤如下：第一步，由第一传感器处获取第一传感器和转轴间的第一距离信息，同时由第二传感器处获取第二传感器和转轴间的第二距离信息。其中，将第一测量组中的N个第一传感器所测得的距离数据叠加，得到第一距离信息，将第二测量组中的N个第二传感器所测得的 距离数据叠加，得到第二距离信息。第二步，根据第一距离信息和第二距离信息确定出凹槽的转动位置信息。其中，通过第一距离值和第二距离值间的差值确定凹槽是否转入某一距离传感器的测量区域中。在该测量结构下，转轴未发生径向波动时，每个距离传感器所测得的数据应相同，因此第一距离值和第二距离值相等，在转轴发生径向波动时，转轴与某一传感器之间的距离增大，则相对一侧的传感器和转轴之间的距离则会对应减小，该对侧距离补偿现象可以使求和得到的第一距离值和第二距离值相近，确保二者间可能产生的误差远小于凹槽的深度，从而消除转轴径向波动对转速测量的影响。对应地，当凹槽转入某一距离传感器的测量区域时，该测量组的求和距离值中增加了凹槽的深度，而另一组的求和距离值无法弥补这一深度，随即可通过第一距离值和第二距离值的差值的突增来确定凹槽转动的位置。第三步，根据确定出的凹槽的位置信息确定出转轴的转速。具体根据凹槽在转过任两个距离传感器间的间隔时长和这两个传感器之间的预设角度差可以确定出转轴的当前转速，该转速不会受到转轴径向波动的影响，精度和可靠性较高，从而提升测量可靠性。进而实现优化磁轴承组件结构，提升转子转速测量精度，提升磁轴承组件控制精度，降低磁轴承组件故障率的技术效果。
本公开的至少一个实施方式中提供了一种磁轴承组件的控制装置，磁轴承组件的控制装置包括：获取单元，用于获取第一传感器和转轴间的第一距离信息，以及第二传感器和转轴间的第二距离信息；第一确定单元，用于根据第一距离信息和第二距离信息确定凹槽的位置信息；第二确定单元，用于根据位置信息确定转轴的转速。
在该技术方案中，限定了一种用于控制上述任一技术方案中的磁轴承组件工作的控制装置。其中，磁轴承组件包括定子以及环绕定子设置的转子，工作中转子在定子的作用下转动，以产生动力。在此基础上，磁轴承组件中设置有转轴，转轴可以为转子的一部分，也可以是与转子同轴连接的动力输出轴，满足转轴和转子同步转动即可。其中，转轴的周侧面上设置有凹槽，且磁轴承组件中还设置有距离传感器，距离传感器设置在转轴的周侧，也就是与转轴周侧面相对的区域中，且距离传感器上的测量端与转轴上设置有凹槽的环面相对设置。距离传感器可以测量自身与转轴表面之间的距离，磁轴承组件开启后，转轴转动，设置有凹槽的环面随即在距离传感器前方转动，在凹槽与距离传感器 的探头相对时，距离传感器和转轴之间的距离为第一距离，在未设置凹槽的转轴周侧面与距离传感器的探头相对时，距离传感器和转轴之间的距离为第二距离，凹槽相对于转轴的周侧面内凹，则第一距离大于第二距离。因此，在凹槽每次穿过距离传感器的测量区域后，距离传感器会产生一个脉冲信号，即转轴转动一圈，随即可根据该脉冲信号确定出转轴的转速。
具体地，距离传感器包括N个第一传感器和数目与第一传感器相同的N个第二传感器，N为大于1的整数，也就是设置至少两对第一传感器和第二传感器。第一传感器和第二传感器均设置在以转轴的轴线为轴的同一个第一圆上，在该第一圆的不同位置测量自身与转轴之间的距离，测量方向则为该第一圆的径向方向。其中，N个第一传感器组合为第一测量组，N个第二传感器组合为第二测量组。
磁轴承组件的控制装置包括获取单元、第一确定单元和第二确定单元：获取单元能够由第一传感器处获取第一传感器和转轴间的第一距离信息，同时由第二传感器处获取第二传感器和转轴间的第二距离信息。其中，将第一测量组中的N个第一传感器所测得的距离数据叠加，得到第一距离信息，将第二测量组中的N个第二传感器所测得的距离数据叠加，得到第二距离信息。第一确定单元用于根据第一距离信息和第二距离信息确定出凹槽的转动位置信息。其中，通过第一距离值和第二距离值间的差值确定凹槽是否转入某一距离传感器的测量区域中。在该测量结构下，转轴未发生径向波动时，每个距离传感器所测得的数据应相同，因此第一距离值和第二距离值相等，在转轴发生径向波动时，转轴与某一传感器之间的距离增大，则相对一侧的传感器和转轴之间的距离则会对应减小，该对侧距离补偿现象可以使求和得到的第一距离值和第二距离值相近，确保二者间可能产生的误差远小于凹槽的深度，从而消除转轴径向波动对转速测量的影响。对应地，当凹槽转入某一距离传感器的测量区域时，该测量组的求和距离值中增加了凹槽的深度，而另一组的求和距离值无法弥补这一深度，随即可通过第一距离值和第二距离值的差值的突增来确定凹槽转动的位置。第二确定单元根据确定出的凹槽的位置信息确定出转轴的转速。具体根据凹槽在转过任两个距离传感器间的间隔时长和这两个传感器之间的预设角度差可以确定出转轴的当前转速，该转速不会受到转轴径向波动的影响，精度和可靠性较高，从而提升测量可靠性。进而实现优化磁轴承组件结构，提升 转子转速测量精度，提升磁轴承组件控制精度，降低磁轴承组件故障率的技术效果。
本公开的至少一个实施方式中提供了一种磁轴承组件的控制装置，磁轴承组件的控制装置包括：存储器，其上存储有程序或指令；处理器，配置为执行程序或指令时实现前述技术方案中的磁轴承组件的控制方法的步骤。
在该技术方案中，提出了一种磁轴承组件的控制装置，该控制装置包括存储器和处理器，存储器用于存储指令或程序，处理器用于调用并执行存储器所存储的指令或程序，以实现上述任一技术方案中的磁轴承组件的控制方法的步骤。因此，该控制装置具备上述任一技术方案中的磁轴承组件的控制方法的优点，可实现上述技术方案中的磁轴承组件的控制方法所能实现的技术效果，为避免重复，此处不再赘述。
本公开的至少一个实施方式中提供了一种可读存储介质，其上存储有程序或指令，程序或指令被处理器执行时实现如前述技术方案中的磁轴承组件的控制方法的步骤。
在该技术方案中，提出了一种可读存储介质，该可读存储介质上存储有可被处理器调用并执行的指令或程序，当处理器执行该指令或程序时，便可实现上述任一技术方案中的磁轴承组件的控制方法的步骤。因此，该可读存储介质具备上述任一技术方案中的磁轴承组件的控制方法的优点，可实现上述技术方案中的磁轴承组件的控制方法所能实现的技术效果，为避免重复，此处不再赘述。
本公开的至少一个实施方式中提供了一种磁轴承组件，磁轴承组件包括：前述技术方案中的磁轴承组件的控制装置；和/或前述技术方案中的可读存储介质。
在该技术方案中，提出了一种包括前述技术方案中的磁轴承组件控制装置和/或前述技术方案中的可读存储介质的磁轴承组件。因此该磁轴承组件具备上述任一技术方案中的磁轴承组件的控制装置和/或可读存储介质的优点，可实现上述技术方案中的磁轴承组件的控制装置和/或可读存储介质所能实现的技术效果，为避免重复，此处不再赘述。
本公开的至少一个实施方式中提供了一种压缩机，包括：前述任一技术方案中的磁轴承组件。
在该技术方案中，提出了一种包括前述技术方案中的磁轴承组件的压缩机。因此该压缩机具备上述任一技术方案中的磁轴承组件的优点，可实现上述技术方案中的磁轴承组件所能实现的技术效果，为避免重复，此处不再赘述。
本公开的至少一个实施方式中提供了一种空调器，空调器包括：上述技术方案中的压缩机。
在该技术方案中，提出了一种包括前述技术方案中的压缩机的空调器。因此该空调器具备上述技术方案中的压缩机的优点，可实现上述技术方案中的压缩机所能实现的技术效果，为避免重复，此处不再赘述。
本公开的附加方面和优点将在下面的描述部分中变得明显，或通过本公开的实践了解到。
附图说明
本公开的上述和/或附加的方面和优点从结合下面附图对实施例的描述中将变得明显和容易理解，其中：
图1示出了根据本公开的一些实施例的磁轴承组件的结构示意图之一；
图2示出了根据本公开的一些实施例的磁轴承组件的结构示意图之二；
图3示出了根据本公开的一些实施例的距离传感器的输出波形图；
图4示出了根据本公开的一些实施例的磁轴承组件的控制方法的流程图；
图5示出了根据本公开的一些实施例的磁轴承组件的控制装置的结构框图之一；
图6示出了根据本公开的一些实施例的磁轴承组件的控制装置的结构框图之二。
其中，图1和图2中的附图标记与部件名称之间的对应关系为：
100磁轴承组件，110转轴，112凹槽，120第一传感器，122第三传感器，124第四传感器，130第二传感器，132第五传感器，134第六传感 器，140定位件。
具体实施方式
为了能够更清楚地理解本公开的上述目的、特征和优点，下面结合附图和具体实施方式对本公开进行进一步的详细描述。需要说明的是，在不冲突的情况下，本公开的实施例及实施例中的特征可以相互组合。
在下面的描述中阐述了很多具体细节以便于充分理解本公开，但是，本公开还可以采用其他不同于在此描述的其他方式来实施，因此，本公开的保护范围并不受下面公开的具体实施例的限制。
下面参照图1至图6描述根据本公开一些实施例的磁轴承组件及其控制方法、控制装置、压缩机和空调器。
如图1、图2和图3所示，本公开的至少一个实施例提供了一种磁轴承组件100，磁轴承组件100包括：转轴110，转轴110的周侧面上设有凹槽112；距离传感器，设于转轴110的周侧，与转轴110上设有凹槽112的环面相对设置，且位于第一圆上，距离传感器包括：N个第一传感器120；N个第二传感器130，在第一圆上，第一传感器120和第二传感器130交替设置；其中，N为大于1的整数；第一圆的圆心位于转轴110的轴线上，第一圆所处平面垂直于转轴110的轴线。
本公开提出了一种磁轴承组件100，磁轴承组件100包括定子以及环绕定子设置的转子，工作中转子在定子的作用下转动，以产生动力。在此基础上，磁轴承组件100中设置有转轴110，转轴110可以为转子的一部分，也可以是与转子同轴连接的动力输出轴，满足转轴110和转子同步转动即可。其中，转轴110的周侧面上设置有凹槽112，且磁轴承组件100中还设置有距离传感器，距离传感器设置在转轴110的周侧，也就是与转轴110周侧面相对的区域中，且距离传感器上的测量端与转轴110上设置有凹槽112的环面相对设置。距离传感器可以测量自身与转轴110表面之间的距离，磁轴承组件100开启后，转轴110转动，设置有凹槽112的环面随即在距离传感器前方转动，在凹槽112与距离传感器的探头相对时，距离传感器和转轴110之间的距离为第一距离，在未设置凹槽112的转轴110周侧面与距离传感器的探头相对时，距离传感器 和转轴110之间的距离为第二距离，凹槽112相对于转轴110的周侧面内凹，则第一距离大于第二距离。因此，在凹槽112每次穿过距离传感器的测量区域后，距离传感器会产生一个脉冲信号，即转轴110转动一圈，随即可根据该脉冲信号确定出转轴110的转速。
相关技术中，多采用单个或两个距离传感器检测转轴110的转速，但转轴110在工作过程中不可避免的会发生径向波动，而距离传感器同样是在转轴110的径向方向上测量自身与转轴110间的距离。因此，在转轴110出现径向波动时，距离传感器和转轴110之间的距离会因波动而发生明显变化，对应输出一个因波动所产生的脉冲信号，该脉冲信号则会影响转轴110的转速判定，使系统得出与实际转速不符的转速值。例如，当转轴110的两侧对称设置两个距离传感器时，若转轴110朝向原理其中一个距离传感器的方向波动时，该距离传感器所测得的距离会突增，与凹槽112转动至该距离传感器前方时所产生的距离突增类似，以至于距离传感器会在凹槽112没有转动至前方前输出错误的脉冲信号。从而产生转轴110转速测量精度低，转轴110控制可靠性差，转动稳定性低的技术问题。
对此，本公开对距离传感器做出了调整。具体地，距离传感器包括N个第一传感器120和数目与第一传感器120相同的N个第二传感器130，N为大于1的整数，也就是设置至少两对第一传感器120和第二传感器130。第一传感器120和第二传感器130均设置在以转轴110的轴线为轴的同一个第一圆上，在该第一圆的不同位置测量自身与转轴110之间的距离，测量方向则为该第一圆的径向方向。其中，N个第一传感器120组合为第一测量组，N个第二传感器130组合为第二测量组。工作过程中，将第一测量组中的N个第一传感器120所测得的距离数据叠加，得到第一距离值，将第二测量组中的N个第二传感器130所测得的距离数据叠加，得到第二距离值。其后通过第一距离值和第二距离值间的差值确定凹槽112是否转入某一距离传感器的测量区域中。在该测量结构下，转轴110未发生径向波动时，每个距离传感器所测得的数据应相同，因此第一距离值和第二距离值相等，在转轴110发生径向波动时，转轴110与某一传感器之间的距离增大，则相对一侧的传感器和转轴110之间的距离则会对应减小，该对侧距离补偿现象可以使求和得到的第一距离值和第 二距离值相近，确保二者间可能产生的误差远小于凹槽112的深度，从而消除转轴110径向波动对转速测量的影响。对应地，当凹槽112转入某一距离传感器的测量区域时，该测量组的求和距离值中增加了凹槽112的深度，而另一组的求和距离值无法弥补这一深度，随即可通过第一距离值和第二距离值的差值的突增来确定凹槽112转动的位置，以得到精准的转轴110转速。例如，图3所示出的波形图中，波峰代表凹槽112转入某一距离传感器的测量区域，波谷代表凹槽112转出距离传感器的测量区域。由此可见，本公开所限定的距离传感器阵列可以解决消除转轴110径向波动对转轴110转速测量的影响，进而解决相关技术中输出错误脉冲信号，转速测量精度低，转轴110工作可靠性差的技术问题。
在此基础上，在距离传感器所分布的第一圆上，第一传感器120和第二传感器130交替设置。该布局方式可以提升第一传感器120和第二传感器130的分布均匀性，避免某一区域中未分布第一传感器120或第二传感器130，确保对侧距离补偿现象可以作用在第一测量组和第二测量组所测得的第一距离值和第二距离值上，从而提升测量可靠性。进而实现优化磁轴承组件100结构，提升转子转速测量精度，提升磁轴承组件100控制精度，降低磁轴承组件100故障率的技术效果。
在上述实施例中，距离传感器在第一圆上均匀分布。
在该实施例中，对距离传感器的分布方式做出展开说明。具体地，在设置距离传感器的第一圆上，多个距离传感器均匀分布，也就是交替设置的第一传感器120和第二传感器130在该第一圆上等间隔角度设置。在交替设置的基础上均匀分布距离传感器可以在转轴110出现径向波动时减少第一距离值和第二距离值之间的差值，以进一步降低径向波动现象对转轴110转速测量精度的影响，确保距离传感器不会输出错误的脉冲信号。进而实现优化距离传感器布局，提升转轴110转速测量精度和可靠性，降低磁轴承组件100故障率的技术效果。
在上述任一实施例中，距离传感器包括：第三传感器122；第四传感器124，在第一圆上，第三传感器122和第四传感器124间的夹角为180°；其中，N个第一传感器120包括第三传感器122和第四传感器124。
在该实施例中，提出了一种具体实施方案。在该方案中，第一传感器120组由第三传感器122和第四传感器124两个传感器组成。并且，在设置距离传感器的第一圆上，第三传感器122和第四传感器124之间的夹角为180°，也就是第三传感器122和第四传感器124设置在同一直径上。第一传感器120和第二传感器130的数目相同，通过将第一传感器120和第二传感器130均限制为两个，可以在满足转速测量精度的基础上压缩传感器的采购成本。通过将第三传感器122和第四传感器124分布在同一条直径上，一方面可以提升这两个传感器之间的补偿效果，另一方面可以使两个第二传感器130分别分布在设置第三传感器122和第四传感器124的直径的左右两侧，以进一步提升距离补偿效果，提升转轴110上凹槽112朝向判定的精度。进而实现优化距离传感器布局，提升转轴110转速测量精度和可靠性，降低磁轴承组件100故障率的技术效果。
在上述任一实施例中，距离传感器包括：第五传感器132；第六传感器134，在第一圆上，第五传感器132与第三传感器122间的夹角为90°，第五传感器132和第六传感器134间的夹角的范围为：大于等于135°，且小于等于225°；其中，N个第二传感器130包括第五传感器132和第六传感器134。
在该实施例中，承接前述实施例，对两个第二传感器130的分布方式做出限定。具体地，第二传感器130组由第五传感器132和第六传感器134组成。在设置距离传感器的第一圆上，第五传感器132与第三传感器122和第四传感器124之间的夹角均为90°，也就是第五传感器132设置在与第三传感器122和第四传感器124所在直径向垂直的直径上。在此基础上，第六传感器134设置在对侧，第六传感器134和第五传感器132在第一圆上的夹角需大于等于135°且小于等于225°。通过限定第五传感器132和第六传感器134之间的距离可以确保对侧距离补偿的效果，避免超出该角度区间的分布方式在转轴110出现径向波动时错误的产生脉冲信号，从而提升转轴110转速的测量精度。其中，第五传感器132和第六传感器134间的角度可以根据转轴110的实际工况做适应性调整，例如在通过工作数据确定转轴110朝某一方向的波动频率较高时，可通过调整第五传感器132和第六传感器134间的角度使第五传感器132或第六传感器134对应设置在这一高频波动方向上，从而进一步强化转轴 110转速的测量精度。具体可选设置与第五传感器132间夹角为180°的第六传感器134，以使该距离传感器阵列可适用于多数场合。进而实现优化距离传感器布局，提升转轴110转速测量精度和可靠性，降低磁轴承组件100故障率的技术效果。
在上述任一实施例中，磁轴承组件100还包括：定位件140，设于转轴110的周侧；第一定位孔，设于定位件140上，第一传感器120嵌设于第一定位孔内；第二定位孔，设于定位件140上，第二传感器130嵌设于第二定位孔内。
在该实施例中，磁轴承组件100中还设置有定位件140。定位件140设置在转轴110的周侧，且与转轴110间隔设置，定位件140用于定位和安装第一传感器120和第二传感器130。具体地，定位件140上设置有第一定位孔和第二定位孔，第一定位孔用于定位安装第一传感器120，第二定位孔用于定位安装第二传感器130。通过设置该定位件140，使第一传感器120和第二传感器130可以精准定位在转轴110周侧的预定安装位置上，以提升装配精度和工作稳定性。且设置该定位件140可以降低第一传感器120和第二传感器130的装配难度。其中，定位件140为金属件，例如可以通过铝制备定位件140。且第一传感器120和第二传感器130嵌设在第一通孔和第二通孔内部。通过设置金属定位件140，并将第二传感器130和第一传感器120嵌入其内部，可以在通过定位孔的开口满足测量需求的基础上，阻止移传感器和第一传感器120所产生的电场向非测量方向延伸。从而降低移传感器和第一传感器120对定子所产生磁场的干扰。从而提升转子转动的稳定性，降低偏心转动概率。进而实现了优化磁轴承组件100结构，提升传感器定位精度和工作稳定性，提升转轴110转速测量精度，提升磁轴承组件100工作可靠性的技术效果。
在上述任一实施例中，定位件140呈环形，定位件140与转轴110共用同一轴线。
在该实施例中，对定位件140的形状和位置做出了限定。具体地，定位件140为环形定位件140，可选择为铝环。在此基础上，定位件140套设在转轴110的外周侧，与转轴110间隔设置，且环形定位件140的轴线与转轴110的轴线重合。通过设置同轴的环形定位件140，可以缩减多个第一传感器120中任意两个第一传感器120与转轴110轴线距离间的差值，同理还可以缩减多个 第二传感器130中任意两个第二传感器130与转轴110轴线距离间的差值。以避免该定位所产生的距离差值影响转轴110转速和转轴110位移的测量精度。从而实现优化传感器定位结构，提升转轴110转速测量可靠性和测量精准度，提升磁轴承组件100工作稳定性的技术效果。
在上述任一实施例中，第一定位孔和第二定位孔均在定位件140的径向方向延伸。
在该实施例中，定位件140上的第一定位孔和第二定位孔均在定位件140的径向方向上延伸。因环形定位件140和转轴110同轴，所以第一定位孔和第二定位孔同样是在转轴110的径向方向上延伸，其中第一定位孔和第二定位孔的开口均朝向转轴110。设置径向延伸的第一定位孔和第二定位孔，使第一传感器120和第二传感器130的测量端可以在径向方向上对准转轴110的周侧面。避免定位偏差影响第一传感器120和第二传感器130的测量精度，提升测量所得数据的可靠性。进而实现优化传感器定位结构，提升转轴110转速测量可靠性和精准度，提升磁轴承组件100工作稳定性的技术效果。
在上述任一实施例中，磁轴承组件100还包括：电控件，设于定位件140上，与第一传感器120和第二传感器130相连接。
在该实施例中，磁轴承组件100中还设置有电控件。具体地，定位件140上设置有定位槽，电控件插接在定位槽中，以通过定位件140支撑定位电控件。其中，环形定位件140的其中一个端面上设置有围绕轴线的环形槽，环形槽连同第一定位孔、第二定位孔和定位槽，再将第一传感器120和第二传感器130分别嵌设在第一定位孔和第二定位孔内部后，部分第一传感器120和第二传感器130位于环形槽内。通过设置该环形操，可以为电控件与传感器之间的连接线路提供布置空间，避免连接线延伸至定位件140外部，防止连接线干扰转轴110转动。在此基础上，磁轴承组件100还设置有环形的盖体，盖体可以盖合在环形槽上，一方面阻止传感器所产生的电场向外延伸，另一方面可以避免连接线由环形槽脱出。进而实现优化定位件140结构，提升磁轴承组件100工作安全性合可靠性，降低磁轴承组件100故障率的技术效果。
如图4所示，本公开的至少一个施例提供了一种磁轴承组件的控制方法，用于控制如上述任一实施例中的磁轴承组件，磁轴承组件的控制方法包括：
步骤402，获取第一传感器和转轴间的第一距离信息，以及第二传感器和转轴间的第二距离信息；
步骤404，根据第一距离信息和第二距离信息确定凹槽的位置信息；
步骤406，根据位置信息确定转轴的转速。
在该实施例中，限定了一种用于控制上述任一实施例中的磁轴承组件工作的控制方法。其中，磁轴承组件包括定子以及环绕定子设置的转子，工作中转子在定子的作用下转动，以产生动力。在此基础上，磁轴承组件中设置有转轴，转轴可以为转子的一部分，也可以是与转子同轴连接的动力输出轴，满足转轴和转子同步转动即可。其中，转轴的周侧面上设置有凹槽，且磁轴承组件中还设置有距离传感器，距离传感器设置在转轴的周侧，也就是与转轴周侧面相对的区域中，且距离传感器上的测量端与转轴上设置有凹槽的环面相对设置。距离传感器可以测量自身与转轴表面之间的距离，磁轴承组件开启后，转轴转动，设置有凹槽的环面随即在距离传感器前方转动，在凹槽与距离传感器的探头相对时，距离传感器和转轴之间的距离为第一距离，在未设置凹槽的转轴周侧面与距离传感器的探头相对时，距离传感器和转轴之间的距离为第二距离，凹槽相对于转轴的周侧面内凹，则第一距离大于第二距离。因此，在凹槽每次穿过距离传感器的测量区域后，距离传感器会产生一个脉冲信号，即转轴转动一圈，随即可根据该脉冲信号确定出转轴的转速。
具体地，距离传感器包括N个第一传感器和数目与第一传感器相同的N个第二传感器，N为大于1的整数，也就是设置至少两对第一传感器和第二传感器。第一传感器和第二传感器均设置在以转轴的轴线为轴的同一个第一圆上，在该第一圆的不同位置测量自身与转轴之间的距离，测量方向则为该第一圆的径向方向。其中，N个第一传感器组合为第一测量组，N个第二传感器组合为第二测量组。
控制磁轴承组件工作的具体步骤如下：第一步，由第一传感器处获取第一传感器和转轴间的第一距离信息，同时由第二传感器处获取第二传感器和转轴间的第二距离信息。其中，将第一测量组中的N个第一传感器所测得的距离数据叠加，得到第一距离信息，将第二测量组中的N个第二传感器所测得的距离数据叠加，得到第二距离信息。第二步，根据第一距离信息和第二距离信 息确定出凹槽的转动位置信息。其中，通过第一距离值和第二距离值间的差值确定凹槽是否转入某一距离传感器的测量区域中。在该测量结构下，转轴未发生径向波动时，每个距离传感器所测得的数据应相同，因此第一距离值和第二距离值相等，在转轴发生径向波动时，转轴与某一传感器之间的距离增大，则相对一侧的传感器和转轴之间的距离则会对应减小，该对侧距离补偿现象可以使求和得到的第一距离值和第二距离值相近，确保二者间可能产生的误差远小于凹槽的深度，从而消除转轴径向波动对转速测量的影响。对应地，当凹槽转入某一距离传感器的测量区域时，该测量组的求和距离值中增加了凹槽的深度，而另一组的求和距离值无法弥补这一深度，随即可通过第一距离值和第二距离值的差值的突增来确定凹槽转动的位置。第三步，根据确定出的凹槽的位置信息确定出转轴的转速。具体根据凹槽在转过任两个距离传感器间的间隔时长和这两个传感器之间的预设角度差可以确定出转轴的当前转速，该转速不会受到转轴径向波动的影响，精度和可靠性较高，从而提升测量可靠性。进而实现优化磁轴承组件结构，提升转子转速测量精度，提升磁轴承组件控制精度，降低磁轴承组件故障率的技术效果。
如图5所示，本公开的至少一个实施例提供了一种磁轴承组件的控制装置500，磁轴承组件的控制装置500包括：获取单元502，用于获取第一传感器和转轴间的第一距离信息，以及第二传感器和转轴间的第二距离信息；第一确定单元504，用于根据第一距离信息和第二距离信息确定凹槽的位置信息；第二确定单元506，用于根据位置信息确定转轴的转速。
在该实施例中，限定了一种用于控制上述任一实施例中的磁轴承组件工作的控制装置。其中，磁轴承组件包括定子以及环绕定子设置的转子，工作中转子在定子的作用下转动，以产生动力。在此基础上，磁轴承组件中设置有转轴，转轴可以为转子的一部分，也可以是与转子同轴连接的动力输出轴，满足转轴和转子同步转动即可。其中，转轴的周侧面上设置有凹槽，且磁轴承组件中还设置有距离传感器，距离传感器设置在转轴的周侧，也就是与转轴周侧面相对的区域中，且距离传感器上的测量端与转轴上设置有凹槽的环面相对设置。距离传感器可以测量自身与转轴表面之间的距离，磁轴承组件开启后，转轴转动，设置有凹槽的环面随即在距离传感器前方转动，在凹槽与距离传感器的探头相对时，距离传感器和转轴之间的距离为第一距离，在未设置凹槽的转轴周侧面 与距离传感器的探头相对时，距离传感器和转轴之间的距离为第二距离，凹槽相对于转轴的周侧面内凹，则第一距离大于第二距离。因此，在凹槽每次穿过距离传感器的测量区域后，距离传感器会产生一个脉冲信号，即转轴转动一圈，随即可根据该脉冲信号确定出转轴的转速。
具体地，距离传感器包括N个第一传感器和数目与第一传感器相同的N个第二传感器，N为大于1的整数，也就是设置至少两对第一传感器和第二传感器。第一传感器和第二传感器均设置在以转轴的轴线为轴的同一个第一圆上，在该第一圆的不同位置测量自身与转轴之间的距离，测量方向则为该第一圆的径向方向。其中，N个第一传感器组合为第一测量组，N个第二传感器组合为第二测量组。
磁轴承组件的控制装置500包括获取单元502、第一确定单元504和第二确定单元506：获取单元502能够由第一传感器处获取第一传感器和转轴间的第一距离信息，同时由第二传感器处获取第二传感器和转轴间的第二距离信息。其中，将第一测量组中的N个第一传感器所测得的距离数据叠加，得到第一距离信息，将第二测量组中的N个第二传感器所测得的距离数据叠加，得到第二距离信息。第一确定单元504用于根据第一距离信息和第二距离信息确定出凹槽的转动位置信息。其中，通过第一距离值和第二距离值间的差值确定凹槽是否转入某一距离传感器的测量区域中。在该测量结构下，转轴未发生径向波动时，每个距离传感器所测得的数据应相同，因此第一距离值和第二距离值相等，在转轴发生径向波动时，转轴与某一传感器之间的距离增大，则相对一侧的传感器和转轴之间的距离则会对应减小，该对侧距离补偿现象可以使求和得到的第一距离值和第二距离值相近，确保二者间可能产生的误差远小于凹槽的深度，从而消除转轴径向波动对转速测量的影响。对应地，当凹槽转入某一距离传感器的测量区域时，该测量组的求和距离值中增加了凹槽的深度，而另一组的求和距离值无法弥补这一深度，随即可通过第一距离值和第二距离值的差值的突增来确定凹槽转动的位置。第二确定单元506根据确定出的凹槽的位置信息确定出转轴的转速。具体根据凹槽在转过任两个距离传感器间的间隔时长和这两个传感器之间的预设角度差可以确定出转轴的当前转速，该转速不会受到转轴径向波动的影响，精度和可靠性较高，从而提升测量可靠性。进而实现优化磁轴承组件结构，提升转子转速测量精度，提升磁轴承组件控制精 度，降低磁轴承组件故障率的技术效果。
如图6所示，本公开的至少一个实施例提供了一种磁轴承组件的控制装置600，磁轴承组件的控制装置600包括：存储器602，其上存储有程序或指令；处理器604，配置为执行程序或指令时实现前述实施例中的磁轴承组件的控制方法的步骤。
在该实施例中，提出了一种磁轴承组件的控制装置600，该控制装置包括存储器602和处理器604，存储器602用于存储指令或程序，处理器604用于调用并执行存储器602所存储的指令或程序，以实现上述任一实施例中的磁轴承组件的控制方法的步骤。因此，该控制装置具备上述任一实施例中的磁轴承组件的控制方法的优点，可实现上述实施例中的磁轴承组件的控制方法所能实现的技术效果，为避免重复，此处不再赘述。
本公开的至少一个实施例提供了一种可读存储介质，其上存储有程序或指令，程序或指令被处理器执行时实现如前述实施例中的磁轴承组件的控制方法的步骤。
在该实施例中，提出了一种可读存储介质，该可读存储介质上存储有可被处理器调用并执行的指令或程序，当处理器执行该指令或程序时，便可实现上述任一实施例中的磁轴承组件的控制方法的步骤。因此，该可读存储介质具备上述任一实施例中的磁轴承组件的控制方法的优点，可实现上述实施例中的磁轴承组件的控制方法所能实现的技术效果，为避免重复，此处不再赘述。
本公开的至少一个实施例提供了一种磁轴承组件，磁轴承组件包括：前述实施例中的磁轴承组件的控制装置；和/或前述实施例中的可读存储介质。
在该实施例中，提出了一种包括前述实施例中的磁轴承组件的控制装置和/或前述实施例中的可读存储介质的磁轴承组件。因此该磁轴承组件具备上述任一实施例中的磁轴承组件的控制装置和/或可读存储介质的优点，可实现上述实施例中的磁轴承组件的控制装置和/或可读存储介质所能实现的技术效果，为避免重复，此处不再赘述。
本公开的至少一个实施例提供了一种压缩机，包括：前述任一实施例中的磁轴承组件。
在该实施例中，提出了一种包括前述实施例中的磁轴承组件的压缩机。因 此该压缩机具备上述任一实施例中的磁轴承组件的优点，可实现上述实施例中的磁轴承组件所能实现的技术效果，为避免重复，此处不再赘述。
本公开的至少一个实施例提供了一种空调器，空调器包括：上述实施例中的压缩机。
在该实施例中，提出了一种包括前述实施例中的压缩机的空调器。因此该空调器具备上述实施例中的压缩机的优点，可实现上述实施例中的压缩机所能实现的技术效果，为避免重复，此处不再赘述。
本公开的描述中，术语“多个”则指两个或两个以上，除非另有明确的限定，术语“上”、“下”等指示的方位或位置关系为基于附图所述的方位或位置关系，仅是为了便于描述本公开和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本公开的限制；术语“连接”、“安装”、“固定”等均应做广义理解，例如，“连接”可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是直接相连，也可以通过中间媒介间接相连。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本公开中的具体含义。
在本公开的描述中，术语“一个实施例”、“一些实施例”、“具体实施例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或特点包含于本公开的至少一个实施例或示例中。在本公开中，对上述术语的示意性表述不一定指的是相同的实施例或实例。而且，描述的具体特征、结构、材料或特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
以上所述仅为本公开的优选实施例而已，并不用于限制本公开，对于本领域的技术人员来说，本公开可以有各种更改和变化。凡在本公开的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本公开的保护范围之内。

Claims (15)

  1. 一种磁轴承组件，其中，包括：
    转轴，所述转轴的周侧面上设有凹槽；
    距离传感器，设于所述转轴的周侧，与所述转轴上设有所述凹槽的环面相对设置，且位于第一圆上，所述距离传感器包括：
    N个第一传感器；
    N个第二传感器，在所述第一圆上，所述第一传感器和所述第二传感器交替设置；
    其中，N为大于1的整数；
    所述第一圆的圆心位于转轴的轴线上，所述第一圆所处平面垂直于所述转轴的轴线。
  2. 根据权利要求1所述的磁轴承组件，其中，所述距离传感器在所述第一圆上均匀分布。
  3. 根据权利要求1所述的磁轴承组件，其中，所述距离传感器包括：
    第三传感器；
    第四传感器，在所述第一圆上，所述第三传感器和所述第四传感器间的夹角为180°；
    其中，所述N个第一传感器包括所述第三传感器和所述第四传感器。
  4. 根据权利要求3所述的磁轴承组件，其中，所述距离传感器包括：
    第五传感器；
    第六传感器，在所述第一圆上，所述第五传感器与所述第三传感器间的夹角为90°，所述第五传感器和所述第六传感器间的夹角的范围为：大于等于135°，且小于等于225°；
    其中，所述N个第二传感器包括所述第五传感器和所述第六传感器。
  5. 根据权利要求1至4中任一项所述的磁轴承组件，其中，还包括：
    定位件，设于所述转轴的周侧；
    第一定位孔，设于所述定位件上，所述第一传感器嵌设于所述第一定位孔内；
    第二定位孔，设于所述定位件上，所述第二传感器嵌设于所述第二定位孔内。
  6. 根据权利要求5所述的磁轴承组件，其中，所述定位件呈环形，所述定位件与所述转轴共用同一轴线。
  7. 根据权利要求6所述的磁轴承组件，其中，所述第一定位孔和所述第二定位孔均在所述定位件的径向方向延伸。
  8. 根据权利要求5所述的磁轴承组件，其中，还包括：
    电控件，设于所述定位件上，与所述第一传感器和所述第二传感器相连接。
  9. 一种磁轴承组件的控制方法，用于控制如权利要求1至8中任一项所述的磁轴承组件，其中，包括：
    获取所述第一传感器和所述转轴间的第一距离信息，以及所述第二传感器和所述转轴间的第二距离信息；
    根据所述第一距离信息和所述第二距离信息确定所述凹槽的位置信息；
    根据所述位置信息确定所述转轴的转速。
  10. 一种磁轴承组件的控制装置，其中，包括：
    获取单元，用于获取第一传感器和所述转轴间的第一距离信息，以及第二传感器和转轴间的第二距离信息；
    第一确定单元，用于根据所述第一距离信息和所述第二距离信息确定凹槽的位置信息；
    第二确定单元，用于根据所述位置信息确定所述转轴的转速。
  11. 一种磁轴承组件的控制装置，其中，包括：
    存储器，其上存储有程序或指令；
    处理器，配置为执行所述程序或指令时实现如权利要求9所述的磁轴承组件的控制方法的步骤。
  12. 一种可读存储介质，其上存储有程序或指令，其中，所述程序或指令被处理器执行时实现如权利要求9所述的磁轴承组件的控制方法的步骤。
  13. 一种磁轴承组件，其中，包括：
    如权利要求10或11所述的磁轴承组件的控制装置；和/或
    所述权利要求12所述的可读存储介质。
  14. 一种压缩机，其中，包括：
    如权利要求1至8、13中任一项所述的磁轴承组件。
  15. 一种空调器，其中，包括：
    如权利要求14所述的压缩机。
PCT/CN2023/070033 2022-01-06 2023-01-03 磁轴承组件及其控制方法、控制装置、压缩机和空调器 WO2023131103A1 (zh)

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