CN101246079A - Five-freedom active control magnetic suspension free rolling system - Google Patents
Five-freedom active control magnetic suspension free rolling system Download PDFInfo
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- CN101246079A CN101246079A CN 200810102392 CN200810102392A CN101246079A CN 101246079 A CN101246079 A CN 101246079A CN 200810102392 CN200810102392 CN 200810102392 CN 200810102392 A CN200810102392 A CN 200810102392A CN 101246079 A CN101246079 A CN 101246079A
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Abstract
A five-freedom active control magnetic suspension free rock system is mainly composed of a magnetic suspension stator system and a magnetic suspension rotor system. The magnetic suspension stator system is mainly composed of a support rod front segment, a support rod back segment, a cover plate, a rotary encoder, a shaft coupling, an electromagnetic clutch component, a tightening bolt, a fixed thread ring, a small self-locking thread ring, a large self-locking thread ring, an axial magnetic bearing stator, a radial magnetic bearing stator, an axial displacement sensor and a radial displacement sensor; and the magnetic suspension rotor system is mainly composed of a locating joint, a principal axis, a protecting bearing, a radial magnetic bearing rotor, an axial magnetic bearing rotor, an axial sensor detecting ring and a radial sensor detecting ring. The invention adopts a magnetic suspension support mode and greatly reduces the mechanical friction, leads to that the plane model can better analog the real aero flight of the plane and the precision of plane wind tunnel test is greatly increased.
Description
Technical field
The present invention relates to five-freedom active control magnetic suspension free rolling system, can be used for the aircraft wind tunnel test, can the analysis of aircraft swing, a series of tests such as vibration, whirling motion, rotation, subsonic flight, sonic flight, supersonic flight, supersonic flight far away, make the model aircraft true airflight of simulated aircraft better.
Background technology
The research that aircraft is aloft flown mainly is the aerial various flight situations of analysis of aircraft now, for example aerial upset of body, flutter of aerofoil, wing rock and roll, the big angle of attack of aircraft take off and land the subsonic flight of aircraft, sonic flight, supersonic flight, supersonic flight far away.These researchs have brought great inconvenience to experiment.Free rolling system be according to aircraft aloft relatively the principle of air movement be born.In wind tunnel test, make the relative ground of model aircraft static, the relative ground motion of air, regulate the flow direction and the flow velocity of air, just can be so that the relative air movement of model aircraft, thus can be in wind-tunnel good simulated aircraft Live Flying, and the various state of flights of aircraft are studied.In order to reduce the precision of free rolling system to the influence and the wind tunnel test of tunnel airstream, reduce its radial dimension, free rolling system is generally made the slender bodies structure.General free rolling system rotor adopts the mechanical bearing supporting, because there is friction in mechanical bearing, so rotor is not in free movement completely in rotation process, gives its certain constraint but be subjected to mechanical bearing, thereby influence the accuracy and confidence of test findings.
Summary of the invention
Technology of the present invention is dealt with problems and is: overcome the deficiencies in the prior art, magnetic levitation technology is applied in the free rolling system, a kind of five-freedom active control magnetic suspension free rolling system is provided, can be used for the aircraft wind tunnel test, can be effectively to aircraft upset in the air, wing flutter, wing wave, the big angle of attack takes off and sunykatuib analysis is carried out in landing, subsonic flight, sonic flight, supersonic flight, supersonic flight far away.
Technical solution of the present invention is: a kind of five-freedom active control magnetic suspension free rolling system; it is characterized in that; mainly form by magnetic levitation stator system and magnetic suspension rotor system; wherein the magnetic levitation stator system is mainly by the first self-locking thread ring; the second self-locking thread ring; the 3rd self-locking thread ring; hold-down nut; last protection bearing holder (housing, cover); under protect bearing holder (housing, cover); first radial displacement transducer; second radial displacement transducer; the 3rd radial displacement transducer; the 4th radial displacement transducer; the 5th radial displacement transducer; last shaft position sensor; following axial displacement transducer; last radial direction magnetic bearing stator; middle radial direction magnetic bearing stator; following radial direction magnetic bearing stator; the axial magnetic bearing stator; the pole leading portion; the pole back segment; cover plate; tightening screw; the electromagnetic clutch assembly; shaft coupling; rotary encoder is formed; magnetic suspension rotor system is mainly by positioning joint; last protection bearing; following protection bearing; the first radial displacement transducer detection ring; the second radial displacement transducer detection ring; the 3rd radial displacement transducer detection ring; the 4th radial displacement transducer detection ring; the 5th radial displacement transducer detection ring; last shaft position sensor detection ring; following axial displacement transducer detection ring; main shaft; last radial direction magnetic bearing rotor; middle radial direction magnetic bearing rotor; following radial direction magnetic bearing rotor; axial magnetic bearing rotor is formed; pass through last radial direction magnetic bearing between magnetic levitation stator system and the rotor-support-foundation system; middle radial direction magnetic bearing; following radial direction magnetic bearing; axial magnetic bearing realizes that the on-mechanical stabilized contact suspends; the pole leading portion is connected by cover plate with the pole back segment; and it is fastening by screw; tightening screw by screw threads for fastening in pole back segment inboard; electromagnetic clutch assembly and rotary encoder are fixed on pole back segment inboard; the electromagnetic clutch assembly is connected with main shaft by driving key; rotary encoder is connected with main shaft by shaft coupling; last radial direction magnetic bearing stator; middle radial direction magnetic bearing stator; following radial direction magnetic bearing stator; the axial magnetic bearing stator is installed in pole leading portion radially inner side; last radial direction magnetic bearing stator upside is first radial displacement transducer; downside is second radial displacement transducer; middle radial direction magnetic bearing stator upside is the 3rd radial displacement transducer; downside is the 4th radial displacement transducer; following radial direction magnetic bearing stator upside is the 4th radial displacement transducer; downside is the 5th radial displacement transducer; last shaft position sensor is between second radial displacement transducer and the 3rd radial displacement transducer; the first radial displacement transducer upside is followed successively by the protection bearing holder (housing, cover); the first self-locking thread ring; the 5th radial displacement transducer downside is followed successively by down axial displacement transducer; under protect bearing holder (housing, cover); the second self-locking thread ring; between each radial direction magnetic bearing and the displacement transducer; between displacement transducer and the displacement transducer; be fastened on pole leading portion radially inner side by the stator abutment sleeve between displacement transducer and the protection bearing holder (housing, cover); axial magnetic bearing stator downside is the 3rd self-locking thread ring; and be fixedly mounted on pole leading portion radially inner side by hold-down nut; last radial direction magnetic bearing rotor; middle radial direction magnetic bearing rotor; following radial direction magnetic bearing rotor; axial magnetic bearing rotor is installed in main shaft diameter laterally; positioning joint is installed on the top conical surface of main shaft; last protection bearing is between positioning joint and last radial direction magnetic bearing rotor; and be fixedly mounted on main shaft diameter laterally by the rotor abutment sleeve and the first radial displacement transducer detection ring; last shaft position sensor detection ring is between last radial direction magnetic bearing rotor and middle radial direction magnetic bearing rotor; and by the second radial displacement transducer detection ring; the 3rd radial displacement transducer detection ring is fixedly mounted on main shaft diameter laterally; the 4th radial displacement transducer detection ring is between middle radial direction magnetic bearing rotor and following radial direction magnetic bearing rotor; following radial direction magnetic bearing rotor downside is followed successively by the 5th radial displacement transducer detection ring; following axial displacement transducer detection ring; following protection bearing, following protection bearing and axial magnetic bearing are fixedly mounted on main shaft diameter by the rotor abutment sleeve and go up laterally.
The main shaft of described five-freedom active control magnetic suspension free rolling system is the elongated flexible rotor, spindle deformation is bigger in real work, in order to overcome the main shaft moderate finite deformation, radial direction magnetic bearing, middle radial direction magnetic bearing, three radial direction magnetic bearings of following radial direction magnetic bearing are realized the noncontact radial support of magnetic suspension rotor system in the employing, the last radial direction magnetic bearing of described magnetic suspension rotor system, middle radial direction magnetic bearing, following radial direction magnetic bearing, axial magnetic bearing are the active magnetic bearing of permanent magnet bias, Electromagnetic Control, or the magnetic bearing of pure electric excitation, or passive type magnetic bearing.
Described main shaft no longer contains mechanical bearing, and last radial direction magnetic bearing, middle radial direction magnetic bearing, following radial direction magnetic bearing, axial magnetic bearing are that main shaft plays radial and axial supporting positioning action.
Described spindle material is the soft alloy of F141, or is that Main Ingredients and Appearance and elastic modulus are the aldary of 88.2～97GPa with copper.
Described first radial displacement transducer, second radial displacement transducer, the 3rd radial displacement transducer, the 4th radial displacement transducer and the 5th radial displacement transducer all have four built-in probes, place and the placement of the positive and negative direction symmetry of Y-axis along the positive and negative direction symmetry of X-axis.
The described shaft position sensor of going up all has two probes with following axial displacement transducer, and goes up the shaft position sensor probe along the placement of the positive and negative direction symmetry of X-axis, and following axial displacement sensor probe is placed along the positive and negative direction of Y-axis is symmetrical.
The described control method that goes up radial direction magnetic bearing, middle radial direction magnetic bearing, following radial direction magnetic bearing is: two displacement signals that detected of popping one's head in that elder generation is detected each radial displacement transducer at two on the positive and negative direction of X-axis probes displacement signal is done respectively on difference and the positive and negative direction of Y-axis are made difference respectively, the differentiated signal that the radial displacement transducer at each radial direction magnetic bearing two ends is done on average calculating operation and the Y-axis at the differentiated signal on the X-axis is done average calculating operation again, is used for X-axis, the Y-axis control of corresponding radial direction magnetic bearing.
The control method of described axial magnetic bearing is: two displacement signals that detected of popping one's head in to last shaft position sensor are made difference and are descended two displacement signals that detected of popping one's head in of axial displacement transducer to make difference, again differentiated signal is done average calculating operation, be used for axial magnetic bearing control.
The principle of such scheme is: in wind tunnel experiment, model aircraft is fastened on the rotor-support-foundation system positioning joint outside, by locking and the release of electromagnetic clutch assembly to rotor-support-foundation system, reaches locking and release to model aircraft; When the electromagnetic clutch assembly was switched on, clutch pack pinned the main shaft lower end by driving key, and rotor-support-foundation system is in the lock state, and rolling system is in off position; When clutch coupling cut off the power supply, clutch coupling separated with the main shaft lower end, and radially, axial magnetic bearing suspends rotor-support-foundation system, rotor-support-foundation system can rotate freely, and rolling system is in running order; Adopt rotary encoder that the model aircraft angle of attack and the anglec of rotation are measured this moment, adjusts gas velocity and direction, makes model become different attitudes; By measurement, just can draw the dynamic response of the model aircraft angle of attack, thereby provide experiment basis for follow-up quiet stable state derivative, moving stable state derivative Measurement and analysis experiment etc. the model aircraft angle of attack.When rolling system is in running order, radially, the principle of work of axial magnetic bearing is: by last radial direction magnetic bearing, middle radial direction magnetic bearing, following radial direction magnetic bearing and axial magnetic bearing keep the radial and axial gap of rotor-support-foundation system and stator system, after rotor-support-foundation system is subjected to a certain interference, make rotor-support-foundation system radially or end play when changing, radial displacement transducer and shaft position sensor will in time detect the variation in radial and axial gap, send detection signal to adding controller, add controller by increasing or reduce electric current in the solenoid of radial direction magnetic bearing or axial magnetic bearing, increase or reduce the magnetic force of radial direction magnetic bearing or axial magnetic bearing, thereby the stator system of maintenance magnetic suspension rotor system and the radial and axial gap of rotor-support-foundation system are even, eliminate the influence of disturbing, keep the normal stable suspended state of magnetic suspension rotor system; Because radial direction magnetic bearing will provide very big supporting power to come supporting rotor, and radial dimension is very little, and the maximum magnetic force in the magnetic bearing of unit area surface is certain, so each radial direction magnetic bearing design is longer relatively; For detection rotor displacement signal more accurately, all place a radial displacement transducer at each radial direction magnetic bearing two ends; Wherein first radial displacement transducer and second radial displacement transducer are respectively applied for and detect the top and bottom displacement of going up radial direction magnetic bearing, the 3rd radial displacement transducer and the 4th radial displacement transducer are respectively applied for the top and bottom displacement of radial direction magnetic bearing in the detection, and the 4th radial displacement transducer and the 5th radial displacement transducer are respectively applied for and detect the top and bottom displacement of radial direction magnetic bearing down; After the displacement signal average treatment that magnetic bearing two ends displacement transducer is radially detected, signal passed to add controller, thereby corresponding radial direction magnetic bearing is controlled; Because whole main shaft is long, detect axial displacement signal so respectively place an axial sensor in the top and bottom of main shaft, wherein go up shaft position sensor and be placed on the main shaft upper end, axial displacement transducer is placed on the main shaft lower end down, after detection signal average treatment to last shaft position sensor, following axial displacement transducer, signal is passed to outer increase control signal, to improve the control accuracy of axial magnetic bearing.Because five-freedom active control magnetic suspension free rolling system adopts the active controllable magnetic suspension bearing as supporting, can realize three axial translations and two main shaft diameter to the Suspension Control of rotation, thereby the five degree of freedom ACTIVE CONTROL that has realized total system suspends.
The present invention's advantage compared with prior art is: (1) the present invention is owing to adopted the magnetic suspension bearing technology, eliminated the moment of friction of the mechanical bearing of rotor-support-foundation system, magnetic suspension rotor system can suspend fully, do not contact with stator, for providing, the model aircraft wind tunnel test has only aerostatic buoyancy and resistance tests environment, the environment of the complete true airflight of simulated aircraft, having eliminated mechanical bearing is rotating and contacting and interference that axial translation is brought, make the relative air of model aircraft be free to vibration, roll, whirling motions etc. have improved the accuracy and confidence of wind tunnel test; (2) on the radial direction magnetic bearing control mode, make calculus of differences respectively by the probe that symmetry on radially displacement transducer X-axis and the Y-axis is placed, and do average calculating operation with the signal behind the same radial direction magnetic bearing other end radial displacement transducer calculus of differences, reduce measuring error greatly, improved the radial direction magnetic bearing control accuracy; (3) upper and lower shaft position sensor probe is placed and the placement of the positive and negative direction symmetry of Y-axis in the positive and negative direction symmetry of X-axis respectively, on the axial magnetic bearing control mode, two displacement signals that detected of popping one's head on the same axial sensor are done calculus of differences, and do average calculating operation with the differential signal of another axial sensor gained, reduce the axial detection signal errors greatly, improved the axial magnetic bearing control accuracy.
Description of drawings
Fig. 1 is the general assembly drawing of magnetic suspension free rolling system;
Fig. 2 is existing model aircraft and the figure that connects of main shaft;
Fig. 3 is a permanent magnet offset radial magnetic bearing wiring layout in the magnetic suspension rotor system of the present invention;
Fig. 4 is the pure electric excitation axial magnetic bearing wiring layout of magnetic suspension rotor system of the present invention;
Fig. 5 is a radial displacement transducer structural drawing of the present invention;
Fig. 6 is the shaft position sensor structural drawing of going up of the present invention;
Fig. 7 is axial displacement sensor structure figure down of the present invention;
Embodiment
As shown in Figure 1; the present invention mainly is made up of magnetic levitation stator system and magnetic suspension rotor system; wherein the magnetic levitation stator system is mainly by the first self-locking thread ring 2; the second self-locking thread ring 26; the 3rd self-locking thread ring 28; hold-down nut 29; last protection bearing holder (housing, cover) 3; under protect bearing holder (housing, cover) 25; first radial displacement transducer 5; second radial displacement transducer 11; the 3rd radial displacement transducer 15; the 4th radial displacement transducer 17; the 5th radial displacement transducer 21; last shaft position sensor 12; following axial displacement transducer 22; last radial direction magnetic bearing 9 stators; middle radial direction magnetic bearing 16 stators; following radial direction magnetic bearing 19 stators; axial magnetic bearing 27 stators; pole leading portion 8; pole back segment 34; cover plate 33; tightening screw 35; electromagnetic clutch assembly 30; shaft coupling 31; rotary encoder 32 is formed; magnetic suspension rotor system is mainly by positioning joint 1; last protection bearing 4; following protection bearing 24; the first radial displacement transducer detection ring 6; the second radial displacement transducer detection ring 10; the 3rd radial displacement transducer detection ring 14; the 4th radial displacement transducer detection ring 18; the 5th radial displacement transducer detection ring 20; last shaft position sensor detection ring 13; following axial displacement transducer detection ring 23; main shaft 7; last radial direction magnetic bearing 9 rotors; middle radial direction magnetic bearing 16 rotors; following radial direction magnetic bearing 19 rotors; axial magnetic bearing 27 rotors are formed; pass through last radial direction magnetic bearing 9 between magnetic levitation stator system and the rotor-support-foundation system; middle radial direction magnetic bearing 16; following radial direction magnetic bearing 19; axial magnetic bearing 27 realizes that the on-mechanical stabilized contact suspends; pole leading portion 8 is connected by cover plate 33 with pole back segment 34; and it is fastening by screw; tightening screw 35 by screw threads for fastening at pole back segment 34 radially inner sides; electromagnetic clutch assembly 30 is fixed on pole back segment 34 radially inner sides with rotary encoder 32; electromagnetic clutch assembly 30 is connected with main shaft 7 by driving key; rotary encoder 32 is connected with main shaft 7 by shaft coupling 31; last radial direction magnetic bearing 9 stators; middle radial direction magnetic bearing 16 stators; following radial direction magnetic bearing 19 stators; axial magnetic bearing 27 stators are installed in pole leading portion 8 radially inner sides; last radial direction magnetic bearing 9 stator upsides are first radial displacement transducer 5; downside is second radial displacement transducer 11; middle radial direction magnetic bearing 16 stator upsides are the 3rd radial displacement transducer 15; downside is the 4th radial displacement transducer 17; following radial direction magnetic bearing 19 stator upsides are the 4th radial displacement transducer 17; downside is the 5th radial displacement transducer 21; last shaft position sensor 12 is between second radial displacement transducer 11 and the 3rd radial displacement transducer 15; first radial displacement transducer, 5 upsides are followed successively by protection bearing holder (housing, cover) 3; the first self-locking thread ring 2; the 5th radial displacement transducer 21 downsides are followed successively by down axial displacement transducer 22; under protect bearing holder (housing, cover) 25; the second self-locking thread ring 26; between each radial direction magnetic bearing and the displacement transducer; between displacement transducer and the displacement transducer; be fastened on pole leading portion 8 radially inner sides by the stator abutment sleeve between displacement transducer and the protection bearing holder (housing, cover); axial magnetic bearing 27 stator downsides are the 3rd self-locking thread ring 28; and be fixedly mounted on pole leading portion 8 radially inner sides by hold-down nut 29; last radial direction magnetic bearing 9 rotors; middle radial direction magnetic bearing 16 rotors; following radial direction magnetic bearing 19 rotors; axial magnetic bearing 27 rotors are installed in main shaft 7 radial outsides; positioning joint 1 is installed on the top conical surface of main shaft 7; last protection bearing 4 is between positioning joint 1 and last radial direction magnetic bearing 9 rotors; and be fixedly mounted on main shaft 7 radial outsides by the rotor abutment sleeve and the first radial displacement transducer detection ring 6; last shaft position sensor detection ring 13 is between last radial direction magnetic bearing 9 rotors and middle radial direction magnetic bearing 16 rotors; and by the second radial displacement transducer detection ring 10; the 3rd radial displacement transducer detection ring 14 is fixedly mounted on main shaft 7 radial outsides; the 4th radial displacement transducer detection ring 18 is between middle radial direction magnetic bearing 16 rotors and following radial direction magnetic bearing 19 rotors; following radial direction magnetic bearing 19 rotor downsides are followed successively by the 5th radial displacement transducer detection ring 20; following axial displacement transducer detection ring 23; following protection bearing 24, following protection bearing 24 is fixedly mounted on main shaft 7 radial outsides by the rotor abutment sleeve with axial magnetic bearing 27.Because five-freedom active control magnetic suspension free rolling system adopts the active controllable magnetic suspension bearing as supporting, realize three axial translations and two main shaft diameter to the Suspension Control of rotation, thereby the five degree of freedom ACTIVE CONTROL that has realized total system suspends.
Last radial direction magnetic bearing 9 in the magnetic suspension rotor system, middle radial direction magnetic bearing 16, following radial direction magnetic bearing 19, axial magnetic bearing 27 can be permanent magnet bias, the active magnetic bearing of Electromagnetic Control, or the magnetic bearing of pure electric excitation, or passive type magnetic bearing.
Described main shaft 7 no longer contains mechanical bearing, and last radial direction magnetic bearing 9, middle radial direction magnetic bearing 16, following radial direction magnetic bearing 19, axial magnetic bearing 27 be radial and axial supporting positioning action for main shaft plays.
Described main shaft 7 materials are the soft alloy of F141, or are that Main Ingredients and Appearance and elastic modulus are the aldary of 88.2～97GPa with copper.
As shown in Figure 2, lining is fixed on the airframe inboard among the present invention, and lining and positioning joint 1 are carried out fastening, and airframe can be fastened on the magnetic levitation rolling system.
As shown in Figure 3, the magnetic suspension rotor system permanent magnet offset radial magnetic bearing mainly is made up of magnetizing coil 161, magnetic bearing gland 162, magnetic bearing rotor 163, magnetic bearing compressing tablet 164, magnetic bearing magnetic steel of stator 165, magnetic bearing stator base 166, magnetic bearing rotor 163 forms the 0.2mm air gap with magnetic bearing stator base 166, wherein magnetizing coil 161, magnetic bearing gland 162, magnetic bearing compressing tablet 164, magnetic bearing magnetic steel of stator 165, magnetic bearing stator base 166 are stationary part, and magnetic bearing rotor 163 is a rotating part.
As shown in Figure 4, the pure electric excitation axial magnetic bearing of magnetic suspension rotor system mainly is made up of axial magnetic bearing stator sleeve 270, winding coil 271, axial magnetic bearing rotor 272, axial magnetic bearing base 273, wherein axial magnetic bearing stator sleeve 270, winding coil 271, axial magnetic bearing base 273 are stationary part, and axial magnetic bearing rotor 272 is a rotating part.
Employed first radial displacement transducer 5 of magnetic suspension rotor system of the present invention and magnetic levitation stator system, second radial displacement transducer 11, the 3rd radial displacement transducer 15, the 4th radial displacement transducer 17, the 5th radial displacement transducer 21 is structure shown in Figure 5, mainly by just along X-axis, the negative direction symmetry is placed, survey two radial displacement transducer probes 50 of directions X displacement signal, 52 and just along Y-axis, the negative direction symmetry is placed, survey two radial displacement transducer probes 51 of Y direction displacement signal, 53 form, and four probes 50,51,52,53 all are placed on sensor internal, are built-in structure.Above radial direction magnetic bearing 9 is an example, two probes 50 to first radial displacement transducer 5, the 52 X-axis displacement signals that detected are made difference, and to its two probes 51 in addition, the 53 Y-axis displacement signals that detected are made difference, and to two of second radial displacement transducer 11 probes 50,52 displacement signals that detected are made difference and its two probes 51 in addition, 53 displacement signals that detected are made difference, differentiated signal on X-axis is done average calculating operation with first radial displacement transducer 5 and second radial displacement transducer 11 again, differentiated signal on Y-axis is done average calculating operation, is used for radial direction magnetic bearing 9X, the control of Y-axis.
The employed shaft position sensor 12 of going up of magnetic suspension rotor system of the present invention and magnetic levitation stator system is respectively Fig. 6 and structure shown in Figure 7 with following axial displacement transducer 22.In the shaft position sensor 12, it is used to detect two shaft position sensor probe 121,122 compositions of Z direction displacement signal mainly by placing along the positive and negative direction symmetry of X-axis on shown in Figure 6.In following axial displacement transducer 22 shown in Figure 7, it is used to detect two shaft position sensor probe 221,222 compositions of Z direction displacement signal mainly by placing along the positive and negative direction symmetry of Y-axis.Two probe 121,122 displacement signals that detected of last shaft position sensor 12 are made two probe 221,222 displacement signals that detected of difference and following axial displacement transducer 22 and made difference, again differentiated signal is done average calculating operation, be used for axial magnetic bearing 27 controls.
Data controlling signal line hole and data controlling signal wire casing are arranged on the pole leading portion 8 of the present invention, and sensor signal lines and magnetic bearings control signal wire pass the hole on the pole leading portion, are placed in the groove then and receive on the controller at last.
The content that is not described in detail in the instructions of the present invention belongs to this area professional and technical personnel's known prior art.
Claims (8)
1; five-freedom active control magnetic suspension free rolling system; it is characterized in that: mainly form by magnetic levitation stator system and magnetic suspension rotor system; wherein the magnetic levitation stator system is mainly by the first self-locking thread ring (2); the second self-locking thread ring (26); the 3rd self-locking thread ring (28); hold-down nut (29); last protection bearing holder (housing, cover) (3); under protect bearing holder (housing, cover) (25); first radial displacement transducer (5); second radial displacement transducer (11); the 3rd radial displacement transducer (15); the 4th radial displacement transducer (17); the 5th radial displacement transducer (21); last shaft position sensor (12); following axial displacement transducer (22); last radial direction magnetic bearing (9) stator; middle radial direction magnetic bearing (16) stator; following radial direction magnetic bearing (19) stator; axial magnetic bearing (27) stator; pole leading portion (8); pole back segment (34); cover plate (33); tightening screw (35); electromagnetic clutch assembly (30); shaft coupling (31); rotary encoder (32) is formed; magnetic suspension rotor system is mainly by positioning joint (1); last protection bearing (4); following protection bearing (24); the first radial displacement transducer detection ring (6); the second radial displacement transducer detection ring (10); the 3rd radial displacement transducer detection ring (14); the 4th radial displacement transducer detection ring (18); the 5th radial displacement transducer detection ring (20); last shaft position sensor detection ring (13); following axial displacement transducer detection ring (23); main shaft (7); last radial direction magnetic bearing (9) rotor; middle radial direction magnetic bearing (16) rotor; following radial direction magnetic bearing (19) rotor; axial magnetic bearing (27) rotor is formed; pass through last radial direction magnetic bearing (9) between magnetic levitation stator system and the rotor-support-foundation system; middle radial direction magnetic bearing (16); following radial direction magnetic bearing (19); axial magnetic bearing (27) realizes that the on-mechanical stabilized contact suspends; pole leading portion (8) is connected by cover plate (33) with pole back segment (34); and it is fastening by screw; tightening screw (35) by screw threads for fastening in pole back segment (34) inboard; electromagnetic clutch assembly (30) is fixed on pole back segment (34) inboard with rotary encoder (32); electromagnetic clutch assembly (30) is connected with main shaft (7) by driving key; rotary encoder (32) is connected with main shaft (7) by shaft coupling (31); last radial direction magnetic bearing (9) stator; middle radial direction magnetic bearing (16) stator; following radial direction magnetic bearing (19) stator; axial magnetic bearing (27) stator is installed in pole leading portion (8) radially inner side; last radial direction magnetic bearing (9) stator upside is first radial displacement transducer (5); downside is second radial displacement transducer (11); middle radial direction magnetic bearing (16) stator upside is the 3rd radial displacement transducer (15); downside is the 4th radial displacement transducer (17); following radial direction magnetic bearing (19) stator upside is the 4th radial displacement transducer (17); downside is the 5th radial displacement transducer (21); last shaft position sensor (12) is positioned between second radial displacement transducer (11) and the 3rd radial displacement transducer (15); first radial displacement transducer (5) upside is followed successively by protection bearing holder (housing, cover) (3); the first self-locking thread ring (2); the 5th radial displacement transducer (21) downside is followed successively by down axial displacement transducer (22); under protect bearing holder (housing, cover) (25); the second self-locking thread ring (26); between each radial direction magnetic bearing and the displacement transducer; between displacement transducer and the displacement transducer; be fastened on pole leading portion (8) radially inner side by the stator abutment sleeve between displacement transducer and the protection bearing holder (housing, cover); axial magnetic bearing (27) stator downside is the 3rd self-locking thread ring (28); and be fixedly mounted on pole leading portion (8) radially inner side by hold-down nut (29); last radial direction magnetic bearing (9) rotor; middle radial direction magnetic bearing (16) rotor; following radial direction magnetic bearing (19) rotor; axial magnetic bearing (27) rotor is installed in main shaft (7) radial outside; positioning joint (1) is installed on the top conical surface of main shaft (7); last protection bearing (4) is positioned between positioning joint (1) and last radial direction magnetic bearing (9) rotor; and be fixedly mounted on main shaft (7) radial outside by the rotor abutment sleeve and the first radial displacement transducer detection ring (6); last shaft position sensor detection ring (13) is arranged between radial direction magnetic bearing (9) rotor and radial direction magnetic bearing (16) rotor; and by the second radial displacement transducer detection ring (10); the 3rd radial displacement transducer detection ring (14) is fixedly mounted on main shaft (7) radial outside; the 4th radial displacement transducer detection ring (18) is arranged between radial direction magnetic bearing (16) rotor and following radial direction magnetic bearing (19) rotor; following radial direction magnetic bearing (19) rotor downside is followed successively by the 5th radial displacement transducer detection ring (20); following axial displacement transducer detection ring (23); following protection bearing (24), following protection bearing (24) is fixedly mounted on main shaft (7) radial outside with axial magnetic bearing (27) by the rotor abutment sleeve.
2, magnetic suspension free rolling system according to claim 1, it is characterized in that: the last radial direction magnetic bearing (9) of described magnetic suspension rotor system, middle radial direction magnetic bearing (16), following radial direction magnetic bearing (19), axial magnetic bearing (27) are the active magnetic bearing of permanent magnet bias, Electromagnetic Control, or the magnetic bearing of pure electric excitation, or passive type magnetic bearing.
3, magnetic suspension free rolling system according to claim 1, it is characterized in that: described main shaft (7) no longer contains mechanical bearing, and last radial direction magnetic bearing (9), middle radial direction magnetic bearing (16), following radial direction magnetic bearing (19), axial magnetic bearing (27) be radial and axial supporting positioning action for main shaft plays.
4, magnetic suspension free rolling system according to claim 1 is characterized in that: described main shaft (7) material is the soft alloy of F141, or is that Main Ingredients and Appearance and elastic modulus are the aldary of 88.2～97GPa with copper.
5, magnetic suspension free rolling system according to claim 1, it is characterized in that: described first radial displacement transducer (5), second radial displacement transducer (11), the 3rd radial displacement transducer (15), the 4th radial displacement transducer (17) and the 5th radial displacement transducer (21) all have four built-in probes, place and the placement of the positive and negative direction symmetry of Y-axis along the positive and negative direction symmetry of X-axis.
6, magnetic suspension free rolling system according to claim 1, it is characterized in that: described upward shaft position sensor (12) and following axial displacement transducer (22) all have two probes, and last shaft position sensor (12) probe is placed along the positive and negative direction symmetry of X-axis, and following axial displacement transducer (22) probe is placed along the positive and negative direction symmetry of Y-axis.
7, magnetic suspension free rolling system according to claim 1, it is characterized in that: the described radial direction magnetic bearing (9) of going up, middle radial direction magnetic bearing (16), the control method of following radial direction magnetic bearing (19) is: earlier with each radial displacement transducer in X-axis just, the displacement signal that on the negative direction two probes are detected is just being made difference and Y-axis respectively, the displacement signal that two probes on the negative direction are detected is made difference respectively, the differentiated signal that the radial displacement transducer at each radial direction magnetic bearing two ends is done on average calculating operation and the Y-axis at the differentiated signal on the X-axis is done average calculating operation again, is used for the X-axis of corresponding radial direction magnetic bearing, Y-axis control.
8, magnetic suspension free rolling system according to claim 1, it is characterized in that: the control method of described axial magnetic bearing (27) is: two displacement signals that detected of popping one's head in to last shaft position sensor (12) are made difference and are descended two displacement signals that detected of popping one's head in of axial displacement transducer (22) to make difference, again differentiated signal is done average calculating operation, be used for axial magnetic bearing (27) control.
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| CNB2008101023927A CN100559143C (en) | 2008-03-21 | 2008-03-21 | Five-freedom active control magnetic suspension free rolling system |
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| CNB2008101023927A CN100559143C (en) | 2008-03-21 | 2008-03-21 | Five-freedom active control magnetic suspension free rolling system |
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| CN101246079A true CN101246079A (en) | 2008-08-20 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101792024A (en) * | 2010-03-03 | 2010-08-04 | 北京航空航天大学 | Lever-type repeatable locking device for magnetically suspended flywheel |
| CN101865759A (en) * | 2010-06-02 | 2010-10-20 | 中国航天空气动力技术研究院 | Device for hypersonic rolling dynamic test |
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| CN101693472B (en) * | 2009-09-25 | 2012-05-23 | 北京航空航天大学 | Repeatable locking device for magnetically suspended flywheel |
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| CN103592099A (en) * | 2013-11-28 | 2014-02-19 | 中国航空工业集团公司沈阳空气动力研究所 | Measuring equipment for wind tunnel free-rolling vibration test and measuring method thereof |
| CN104457649A (en) * | 2013-09-12 | 2015-03-25 | 珠海格力节能环保制冷技术研究中心有限公司 | Shaft detection method and device for magnetic suspension system |
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| CN108535647A (en) * | 2018-03-28 | 2018-09-14 | 华南理工大学 | A kind of the simple experiment platform and method of the performance test of four-degree-of-freedom magnetic suspension motor |
| CN108931722A (en) * | 2018-04-28 | 2018-12-04 | 清华大学 | Magnetic bearing rotor system multi-function experimental rig |
| CN112268678A (en) * | 2020-10-15 | 2021-01-26 | 中国空气动力研究与发展中心高速空气动力研究所 | Free rock test device for high-speed wind tunnel |
| WO2021128573A1 (en) * | 2019-12-26 | 2021-07-01 | 南京磁谷科技股份有限公司 | Novel magnetic suspension bearing assembly |
| CN113916488A (en) * | 2021-06-28 | 2022-01-11 | 中国航天空气动力技术研究院 | Wind tunnel force measurement test device and method capable of automatically switching between free rotation and forced rotation |
| CN115326350A (en) * | 2022-10-14 | 2022-11-11 | 中国空气动力研究与发展中心高速空气动力研究所 | Motor-driven wind tunnel jet flow test equivalent simulation device and application method thereof |
| CN117571249A (en) * | 2024-01-15 | 2024-02-20 | 中国空气动力研究与发展中心高速空气动力研究所 | Wind tunnel test angle limiting device convenient to adjust and application method thereof |
| CN117589417A (en) * | 2024-01-17 | 2024-02-23 | 中国空气动力研究与发展中心高速空气动力研究所 | Wind tunnel large load free rock test device and application method |
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2008
- 2008-03-21 CN CNB2008101023927A patent/CN100559143C/en not_active Expired - Fee Related
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| CN101660965B (en) * | 2008-08-27 | 2011-03-30 | 李岭群 | Magnetic-suspension magnetomotive omnidirectional turning natural wind tunnel |
| CN101693472B (en) * | 2009-09-25 | 2012-05-23 | 北京航空航天大学 | Repeatable locking device for magnetically suspended flywheel |
| CN101792024B (en) * | 2010-03-03 | 2013-05-08 | 北京航空航天大学 | Lever-type repeatable locking device for magnetically suspended flywheel |
| CN101792024A (en) * | 2010-03-03 | 2010-08-04 | 北京航空航天大学 | Lever-type repeatable locking device for magnetically suspended flywheel |
| CN101865759A (en) * | 2010-06-02 | 2010-10-20 | 中国航天空气动力技术研究院 | Device for hypersonic rolling dynamic test |
| CN102305699A (en) * | 2011-05-19 | 2012-01-04 | 北京航空航天大学 | Wind tunnel experiment system for free flight model |
| CN102589839A (en) * | 2012-02-16 | 2012-07-18 | 重庆德马变频电机研发制造有限公司 | Hollow rotation mechanism for wind tunnel test |
| CN103196672A (en) * | 2013-03-01 | 2013-07-10 | 北京中科科仪股份有限公司 | Magnetic levitation molecular pump radical protective bearing detection method |
| CN103196672B (en) * | 2013-03-01 | 2015-07-01 | 北京中科科仪股份有限公司 | Magnetic levitation molecular pump radical protective bearing detection method |
| CN104457649A (en) * | 2013-09-12 | 2015-03-25 | 珠海格力节能环保制冷技术研究中心有限公司 | Shaft detection method and device for magnetic suspension system |
| CN104457649B (en) * | 2013-09-12 | 2018-12-04 | 珠海格力电器股份有限公司 | Shaft detection method and apparatus in magnetic suspension system |
| CN103592099A (en) * | 2013-11-28 | 2014-02-19 | 中国航空工业集团公司沈阳空气动力研究所 | Measuring equipment for wind tunnel free-rolling vibration test and measuring method thereof |
| CN103592099B (en) * | 2013-11-28 | 2016-09-14 | 中国航空工业集团公司沈阳空气动力研究所 | Measuring method for the measurement apparatus of wind-tunnel free roll oscillation test |
| CN105784318B (en) * | 2016-03-04 | 2017-07-18 | 中国空气动力研究与发展中心低速空气动力研究所 | A kind of low-speed wind tunnel model flight experimental system and method |
| CN105784318A (en) * | 2016-03-04 | 2016-07-20 | 中国空气动力研究与发展中心低速空气动力研究所 | Low-speed wind tunnel model flying experimental system and method |
| CN106768804A (en) * | 2016-12-21 | 2017-05-31 | 中国航天空气动力技术研究院 | One kind is applied to temporarily rush formula supersonic wind tunnel surge guard device |
| CN107979239A (en) * | 2017-12-28 | 2018-05-01 | 南京磁谷科技有限公司 | A kind of magnetic suspension motor radial transducer mounting structure |
| CN107979239B (en) * | 2017-12-28 | 2024-03-15 | 南京磁谷科技有限公司 | Radial sensor mounting structure of magnetic suspension motor |
| CN108535647B (en) * | 2018-03-28 | 2023-12-05 | 华南理工大学 | Simple experimental platform and method for testing performance of four-degree-of-freedom magnetic levitation motor |
| CN108535647A (en) * | 2018-03-28 | 2018-09-14 | 华南理工大学 | A kind of the simple experiment platform and method of the performance test of four-degree-of-freedom magnetic suspension motor |
| CN108931722A (en) * | 2018-04-28 | 2018-12-04 | 清华大学 | Magnetic bearing rotor system multi-function experimental rig |
| CN108931722B (en) * | 2018-04-28 | 2021-01-15 | 清华大学 | Multifunctional experiment table for magnetic bearing-rotor system |
| WO2021128573A1 (en) * | 2019-12-26 | 2021-07-01 | 南京磁谷科技股份有限公司 | Novel magnetic suspension bearing assembly |
| CN112268678A (en) * | 2020-10-15 | 2021-01-26 | 中国空气动力研究与发展中心高速空气动力研究所 | Free rock test device for high-speed wind tunnel |
| CN113916488A (en) * | 2021-06-28 | 2022-01-11 | 中国航天空气动力技术研究院 | Wind tunnel force measurement test device and method capable of automatically switching between free rotation and forced rotation |
| CN115326350A (en) * | 2022-10-14 | 2022-11-11 | 中国空气动力研究与发展中心高速空气动力研究所 | Motor-driven wind tunnel jet flow test equivalent simulation device and application method thereof |
| CN117571249A (en) * | 2024-01-15 | 2024-02-20 | 中国空气动力研究与发展中心高速空气动力研究所 | Wind tunnel test angle limiting device convenient to adjust and application method thereof |
| CN117571249B (en) * | 2024-01-15 | 2024-04-05 | 中国空气动力研究与发展中心高速空气动力研究所 | Wind tunnel test angle limiting device convenient to adjust and application method thereof |
| CN117589417A (en) * | 2024-01-17 | 2024-02-23 | 中国空气动力研究与发展中心高速空气动力研究所 | Wind tunnel large load free rock test device and application method |
| CN117589417B (en) * | 2024-01-17 | 2024-03-19 | 中国空气动力研究与发展中心高速空气动力研究所 | Wind tunnel large load free rock test device and application method |
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