CN104295444A - Blade device and system with local contour deformation function and control method - Google Patents
Blade device and system with local contour deformation function and control method Download PDFInfo
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- CN104295444A CN104295444A CN201410428979.2A CN201410428979A CN104295444A CN 104295444 A CN104295444 A CN 104295444A CN 201410428979 A CN201410428979 A CN 201410428979A CN 104295444 A CN104295444 A CN 104295444A
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2240/00—Components
- F05B2240/20—Rotors
- F05B2240/21—Rotors for wind turbines
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
The invention provides a blade device with a local contour deformation function. The device comprises a blade structure frame and a deformation driving device, wherein deformation skin is fixedly connected to a part of the external contour of the blade structure frame, the deformation driving device corresponds to the deformation skin in position, and the deformation skin deforms under the driving of the deformation driving device. Meanwhile, the invention provides a blade system based on the blade device and a control method. According to the blade device and system with the local contour deformation function and the control method, active driving deformation is conducted on the contour of a blade through the deformation driving device, the load pressure of fluid acting on the contour surface is changed in time, in other words, the acting force of fluid on the blade is changed, then the stress state of the blade relative to fluid is changed, so that the fluid action load of the surface of the blade relative to fluid movement is optimized, and finally the stress condition and movement state/performance of the blade relative to fluid movement are correspondingly controlled.
Description
Technical field
The present invention relates to the controlling distortion technical field of moving body in a fluid, aerofoil profile, blade etc., particularly, relate to a kind of there is local profile distortion function paddle device and system and controlling method.
Background technique
Blower fan generated output controls adopt more and becomes oar technology.The all-cis oar that can become continuously when the change oar operation of blower fan normally runs under oar or emergency stop conditions becomes oar.This change oar of blower fan drives the method for operation, is conducive to blower fan system and starts steadily, make generated output realize comparatively stable regulation.At present, realize drive system many employings hydraulic variable propeller system that this change oar regulates, it becomes oar process is continuously to carry out position and speeds control by the uninterrupted of hydraulic proportion valve hydraulic control oil.This hydraulic variable propeller system is by electric hydraulic pump as operation power, and hydraulic oil is as Transfer Medium, and solenoid valve, as control unit, realizes the feather of blade by the circular movement radial motion of cylinder piston rod being become blade.Feather servo-control system is made up of signal feeding, comparator, position (pitch) controller, rate controller, D/A converter, actuator and feedback loop.Hydraulic vane change actuator is overlapped independently vane change device formed by fuel tank, hydro-power pump, power unit accumulator, hydraulic pipe line, swivel joint, pitch-controlled system accumulator and three.
According to the formation of above-mentioned hydraulic variable propeller system, can find out and utilize this system to realize becoming oar, its integral link is complicated, and parts are many, and greatly, cost is high for the volume of system and quality.In addition, because blade is rotating, by a swivel joint, the hydraulic oil pipeline of hydraulic station in cabin must be introduced the wheel hub in rotating, the pressure of hydraulic oil has tens MPas, this also makes manufacture process requirement higher, and difficulty is comparatively large, and pipeline also easily leakage accident occurs.
Particularly, this blade becomes oar driving mode, very large to the driving load of drive system, the change oar that can not realize the real-time response of changeable wind transmission load drives drives, do not possess the adaptability blade Forced rotation/rotational speed regulation of the rapid sensitive for change wind speed, therefore, be difficult to realize the sensitive and stable adjustment of blower fan generated output.
Simultaneously, in traditional pitch-controlled system runing adjustment process, owing to acting on while varying load wind-force, whole separation generator system is made to produce vibration and impact, this vibration, impact and the stress and strain under alternate load all can be brought significantly to change to blower fan structure and system wherein, even under large wind speed operating mode, destruction and the damage of blower fan structure can be caused, cause potential safety hazard or heavy economic losses.This vibratory response due to the blower fan structure under the effect of varying load wind-force or parts and impact, also cannot carry out regulating in real time by above-mentioned change oar drive system the vibration that reduces under wind-force effect and impact impact.
Summary of the invention
The present invention is directed to above shortcomings in prior art, provide a kind of there is local profile distortion function paddle device and system and controlling method.This paddle device installs small drive device by the local, appropriate location on blade, change the local shape (namely changing blade profile) of blade or aerofoil profile, thus change rapidly lift and the resistance difference of blade/airfoil surface, and then realize regulating in real time the Wind power propelling power suffered by blade and controlling blade rotating speed, finally to realize blower fan generated output (blower fan generated output can be limit to export) and blower fan structure is changing the real-time high-efficiency control vibrating active damping under wind load.
The present invention is achieved by the following technical solutions.
According to an aspect of the present invention, provide a kind of paddle device with local profile distortion function, comprise paddle blade structure framework and distortion drive unit, the outside profile of described paddle blade structure framework connects firmly deformation skin on local location, described distortion drive unit is corresponding with deformation skin position to be arranged, and described deformation skin deforms under the driving of distortion drive unit.
Preferably, described distortion drive unit is one or more, and multiple distortion drive unit forms composite structure or array structure.
Preferably, described distortion drive unit comprises displacement driver, and institute's displacement drive is arranged on paddle blade structure framework, and extends displacement or ouput force displacement by producing, and described displacement outbound course points to deformation skin; Or
Described distortion drive unit comprises displacement driver and displacement exports excessive structural, and institute's displacement drive exports excessive structural by displacement and contacts with deformation skin, and extends displacement or ouput force displacement by producing.
Preferably, institute's displacement drive adopt following any one or appoint various structures:
-comprising at least one electromagnet and be arranged at least one permanent magnet in electromagnet magnetic link, formation control magnetic field, described permanent magnet moves under the driving force of controlling magnetic field; Described permanent magnet is rigidly connected driving body, and described driving body produces displacement and exports under the drive of permanent magnet, and displacement outbound course points to deformation skin position, and then drives deformation skin to produce distortion;
-the solid of rotation that comprises driving mechanism and driven by driving mechanism, it is the support on inclined-plane and the support platform being close to inclined-plane setting that described solid of rotation comprises upper end, the downward-sloping one end of described support platform is provided with projection, projection change in location in solid of rotation rotary course, and then drive deformation skin to produce distortion;
-comprising electromagnet and permanent magnet, described permanent magnet is direction obform body, and the two ends magnetic pole of described direction obform body around axle wallowing motion, forms displacement difference under magnetic force, and then drives deformation skin to produce distortion;
-magnetostrictive rod, produces distortion by magnetic pumping effect, and then drives deformation skin distortion;
-piezoelectric material body, produces distortion by voltage signal effect, and then drives deformation skin distortion;
-magnetostriction shape memory alloy material body or phase-change material body, produce distortion after being heated up by electric excitation effect, and then drive deformation skin distortion;
-inflation/topping up deformable body of comprising gas/liquid pump and being connected with air pump, described inflation/topping up deformable body expansion rear driving deformation skin deforms.
Preferably, described permanent magnet is arranged on the both sides magnetic pole of electromagnet by slide.
Preferably, described driving body adopts any one structure following:
-elastic deformable body, there is deformation in described elastic deformable body, and then drive deformation skin to produce distortion in the moving process of permanent magnet;
-there is the rigid body of arched surface, described rigid body is provided with movement rod, and described movement rod to be slidably disposed on elastic deformable body and only can to move along Z-direction; When rigid body produces X to displacement under permanent magnet drives, movement rod realizes Z-direction displacement and exports;
-rigid displacement take-off lever, described rigid displacement take-off lever produces displacement and exports in the moving process of permanent magnet, and then drives deformation skin distortion;
-arc-shaped protrusions and to be arranged in arc-shaped protrusions and only can along the rigidity take-off lever of Z-direction movement, described arc-shaped protrusions and permanent magnet are rigidly connected, and in the moving process of permanent magnet, drive rigid body to produce displacement export, and then drive deformation skin to be out of shape;
Preferably, described elastic deformable body is provided with movement rod, and described movement rod is slidably disposed on elastic deformable body, and while elastic deformable body produces distortion, realizes Z-direction displacement and export, and then better drives deformation skin distortion.
Preferably, described deformation skin adopts shape memory alloy material or heat deformable material, and described distortion drives material bodies to adopt electrothermal resistance silk, and described deformation skin heats up and produces distortion under the effect of electrothermal resistance silk.
Preferably, described electrothermal resistance silk and deformation skin one-body molded.
According to a second aspect of the invention, provide a kind of blade system with local profile distortion function, comprise rated generation power closed loop control system, paddle device vibration control system, drived control and power amplifier and above-mentioned paddle device, wherein, described rated generation power closed loop control system is connected with paddle device respectively by drive controller and power amplifier with paddle device vibration control system.
Preferably, described rated generation power closed loop control system comprises: generated output detecting sensor, rated generation power comparator and generated output control algorithm device, wherein, described generated output detecting sensor is connected with rated generation power comparator, described rated generation power comparator is connected with generated output control algorithm device, described generated output control algorithm device is connected with drive controller and power amplifier, and described drive controller and power amplifier are connected with the distortion drive unit of paddle device.
Preferably, described paddle device vibration control system comprises: vibration detecting sensor, oscillating signal comparator and device vibration control algorithm device, wherein, described vibration detecting sensor is connected with oscillating signal comparator, described oscillating signal comparator is connected with device vibration control algorithm device, described device vibration control algorithm device is connected with drive controller and power amplifier, and described drive controller and power amplifier are connected with the distortion drive unit of paddle device.
Preferably, described vibration detecting sensor is arranged on the outside profile face of paddle device.
According to a third aspect of the present invention, provide a kind of controlling method with the blade system of local profile distortion function, comprise following any one or multiple step:
Steps A, the closed loop control of rated generation power;
Step B, paddle device vibration control.
Preferably, described rated generation power closed loop control process comprises:
Step 1, by generated output detecting sensor, monitors in real time to the electric current that blower fan power generation system is produced by paddle device motion;
Step 2, by rated generation power comparator, blower fan power generation system is expected the respective signal of generated output compares as the real-time generated output signal detected with reference to signal and actual power power detection sensor, and the difference of two signals is demarcated as an electrical signal feeding generated output control algorithm device;
Step 3, generated output control algorithm device, calculate in real time under current blower fan power generation system and wind speed according to the electrical signal that rated generation power comparator is sent into, paddle device needs the blade ratio of lift coefficient to drag coefficient coefficient of adjustment, and result of calculation correspondence is produced the drive singal of the expectation blade deformation extent of a generated output adjustment magnitude, send into drived control and power amplifier, and then drive paddle device to produce the distortion of outside profile;
Step 4, generated output control algorithm device calculates the driver output displacement and ouput force of expecting the distortion drive unit that paddle device local deformation degree is corresponding in real time, and calculate when being out of shape command signal when drive unit reaches required drive displacement and driving force in real time by on-line identification mathematical model, then by drive controller and power amplifier, send corresponding forceful electric power signal to structurally variable shape drive unit, make distortion drive unit produce driver output displacement/power, the surface structure configuration of blade correspondence contact is produced by driving distortion.
Preferably, described paddle device vibration control process comprises:
Step one, pass through vibration detecting sensor, to suffered by paddle device local time become aerodynamic loading and carry out the sensor of real time acceleration detection, and by obtaining suffered local time's changes/alternation wind load directed varying forces to the detection of acceleration simultaneously, acquisition oscillating signal;
Step 2, by oscillating signal comparator, blower fan power generation system is demarcated the real-time oscillating signal that the early warning vibration acceleration signal that bears at position detects as vibration reference signal and vibration detecting sensor to compare, and the difference of two signals is demarcated as an electrical signal feeder vibration control algorithm device;
Step 3, device vibration control algorithm device, calculate in real time under current blower fan power generation system and wind-force according to the electrical signal that oscillating signal comparator is sent into, paddle device needs adjustment or reduces paddle device surface lift and/or resistance difference, namely make a concerted effort, and then the vibration reducing paddle device vibration and/or be delivered on blower fan power generation system sensitive structure; Result of calculation correspondence is produced the drive singal of the expectation paddle device deformation extent of a vibration vibration damping value, send into drive controller and power amplifier;
Step 4, device vibration control algorithm device calculates the driver output displacement and ouput force of expecting the distortion drive unit that paddle device local deformation degree is corresponding in real time, and calculate when being out of shape command signal when drive unit reaches required drive displacement and driving force in real time by on-line identification mathematical model, then by drive controller and power amplifier, send corresponding forceful electric power signal to being out of shape drive unit, distortion drive unit is made to produce driver output displacement/power, and then make the outside profile of paddle device correspondence contact produce passive matrix distortion, realize paddle device stressed, the real-time control of acceleration and vibration.
Compared with prior art, the present invention has following beneficial effect:
1, be out of shape deformation skin active drive by distortion drive system, timely alter acts on the fluid-load pressure in the outside profile face of blade, optimizes the fluid matasomatism load in the fluid relative movement process of blade outside profile face;
2, stressing conditions, motion state and performance during the motion of paddle device fluid relative all obtain corresponding control;
3, structure is simple, and constituent elements is few, by the magnetic pole active force contacted with each other or between close magnet, can namely utilize direct compound action power between electromagnetism and permanent magnetism magnetic pole, realizes larger displacement and exports;
4, can be controlled by electromagnetic signal, distortion driver output controls sensitive, convenient, and has power-off maintenance function;
5, the local profile distortion being applicable to moving body in a fluid, aerofoil profile, blade etc. drives.
Accompanying drawing explanation
By reading the detailed description done non-limiting example with reference to the following drawings, other features, objects and advantages of the present invention will become more obvious:
Fig. 1 is paddle device embodiment 1 structural representation, and wherein: (a) is original state, (b) is state after distortion, and (c) is partial enlargement state after distortion;
Fig. 2 is paddle device embodiment 2 structural representation;
Fig. 3 is paddle device embodiment 3 structural representation;
Fig. 4 is paddle device embodiment 4 structural representation;
Fig. 5 is paddle device embodiment 5 structural representation;
Fig. 6 is magnetostriction material structure schematic diagram;
Fig. 7 is marmem (SMA) spring structure schematic diagram, and wherein: (a) is original state, (b) is deformation state after energising;
Fig. 8 is phase change material structure schematic diagram, and wherein: (a), (c) (e) are original state, (b), (d), (f) are deformation state after energising;
Fig. 9 is paddle device embodiment 6 structural representation, and wherein: (a) is original state, (b) is state after distortion, and (c) is original state partial enlargement state, and (d) is partial enlargement state after distortion;
Figure 10 is paddle device embodiment 7 structural representation, and wherein: (a) is original state, (b) is state after distortion, and (c) is original state partial enlargement state, and (d) is partial enlargement state after distortion;
Figure 11 is paddle device embodiment 8 structural representation;
Figure 12 is blade system structural representation;
In figure: 1 is displacement driver, 2 is deformation skin, and 3 is displacement output excessive structural, and 4 is paddle blade structure framework, and 11 is driving body, and 12 is electromagnet, and 13 is permanent magnet, and 14 is guide rail, and 15 is moving body.
Embodiment
Below embodiments of the invention are elaborated: the present embodiment is implemented under premised on technical solution of the present invention, give detailed mode of execution and concrete operating process.It should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Please refer to Fig. 1 to Figure 11.
Embodiment 1
Present embodiments provide a kind of paddle device with local profile distortion function, comprise paddle blade structure framework and distortion drive unit, the outside profile of described paddle blade structure framework connects firmly deformation skin on local location, described distortion drive unit is corresponding with deformation skin position to be arranged, and described deformation skin deforms under the driving of distortion drive unit.
Further, described distortion drive unit comprises displacement driver, and institute's displacement drive is arranged on paddle blade structure framework, and extends displacement or ouput force displacement by producing, and described displacement outbound course points to deformation skin; Or
Described distortion drive unit comprises displacement driver and displacement exports excessive structural, and institute's displacement drive exports excessive structural by displacement and contacts with deformation skin, and extends displacement or ouput force displacement by producing.
Further, institute's displacement drive adopts following structure:
Comprise at least one electromagnet and be arranged at least one permanent magnet in electromagnet magnetic link, formation control magnetic field, described permanent magnet moves under the driving force of controlling magnetic field; Described permanent magnet is rigidly connected driving body, and described driving body produces displacement and exports under the drive of permanent magnet, and displacement outbound course points to deformation skin position, and then drives deformation skin to produce distortion.
Further, described driving body adopts following structure:
Elastic deformable body, there is deformation in described elastic deformable body, and then drive deformation skin to produce distortion in the moving process of permanent magnet.
Further, described elastic deformable body is provided with movement rod, and described movement rod is slidably disposed on elastic deformable body, and while elastic deformable body produces distortion, realizes Z-direction displacement and export, and then better drives deformation skin distortion.
Be specially:
As shown in Fig. 1 (a) to Fig. 1 (c), distortion drive unit comprises: the driver 1 (producing Z-direction displacement) of displacement, the deformation skin 2 being positioned at local, displacement export excessive structural 3, paddle blade structure framework 4.Wherein, the driver 1 of displacement is arranged on paddle blade structure framework 4, or is arranged on displacement output excessive structural 3; Outer rim and the blade exterior skin of blade local deformable covering 2 connect firmly, and profile corresponding to blade is fitted.Time initial, the displacement bar outer end of displacement driver 1 exports excessive structural 3 through displacement and contacts with blade local deformable covering 2.The driver 1 of displacement is a kind of driving element that can produce elongation displacement or ouput force under electromagnetism or electric excitation, when its excited target is extended, the blade local deformable covering 2 promoting expection contact is produced bowing, namely reaches the effect that blade profile is out of shape.Further, deformation extent can adjust control in real time by the electromagnetic signal strength of displacement driver.
Wherein, deformation skin 2 is generally a kind of elastic materials, or a kind of stressed after can there is bowing structure.
Furthermore, displacement driver 1 comprises:
Driving body (displacement output body) 11, electromagnet 12, permanent magnet (permanent magnet slide block) 13, guide rail 14.Wherein, the two ends of driving body 11 connect firmly with two permanent magnets 13 being positioned at electromagnet 12 two ends respectively; Guide rail 14 direction consistent with the axis of electromagnet 12 connects firmly and maintains static.Two permanent magnets 13 can slide on guide rail 14, and two permanent magnet 13 magnetic pole placement directions are identical.
During work, driving body 11 makes the permanent magnet slide block 13 being positioned at its two ends be separated on guide rail 14 direction with electromagnet 12 due to self original shape structure (elastic force had).When passing into forward current to electromagnet 12, two permanent magnets 12 will be attracted sends a telegraph magnet 12 both ends of the surface in guide rail 14 slip; Meanwhile, driving body 11 two ends, under this suction-combining force effect, are driven in the horizontal direction and inwardly tighten up, simultaneously in the vertical direction outwards (on) stretch out, produce the external output displacement of vertical direction or ouput force.So far, the Z-direction displacement of the driver 1 of displacement can be produced, and reach driving effect.When passing into alternating current to electromagnet 12, two permanent magnets 13 by reciprocal adhesive and will be scolded open, thus, and the upper top of driving body 11 and being up and down reciprocatingly out of shape, thus produce the up and down reciprocatingly action controlled based on electrical signal, namely produce driving.It should be noted that, because yoke in the middle part of electromagnet 12 is ferromagnetic material, so when permanent magnet 13 adhesive to electromagnet 12 two ends and power-off time, permanent magnet will lean on himself permanent magnetic attraction to be pull-in on electromagnet 12 two ends, thus the distressed structure of driving body 11 is remained unchanged, and enable its output displacement keep locking state, namely can realize driver output power-off (idle) and keep function.
For the above realization driven, above two permanent magnet 13 pole orientation can also be placed on the contrary, and a moving body (displacement take-off lever) 15 is set.Now, driving body 11 is rigid body, can support moving body 15.
Like this, when applying alternating current to electromagnet 12, then under electromagnetic repulsion force (left end) and suction (right-hand member) effect, two pieces of permanent magnets 13 are moved left and right simultaneously.Like this, bending rigidity driving body 11 moves up and down pushing the moving body 15 be in contact with it, thus produces the up and down reciprocatingly action controlled based on electrical signal, namely produces driving.It should be noted that, because yoke in the middle part of electromagnet 12 is ferromagnetic material, so when permanent magnet 13 adhesive electromagnet 12 and power-off time, one of them permanent magnet 13 will lean on himself permanent magnetic attraction to be pull-in on electromagnet 12, thus the position of driving body 11 is remained unchanged, and enable its output displacement keep locking state, namely can realize driver output power-off (idle) and keep function.
Embodiment 2
Embodiment 2 is the change case of embodiment 1, on the basis of embodiment 1, be with the difference of embodiment 1, elastic deformable body replaced with rigid displacement take-off lever, described rigid displacement take-off lever produces displacement and exports in the moving process of permanent magnet, and then drives deformation skin distortion.
Be specially:
As shown in Figure 2, permanent magnet moves along Z axis between two electromagnets, and rigid displacement take-off lever realizes displacement and exports under the drive of permanent magnet.
Embodiment 3
Embodiment 3 is the change case of embodiment 1, on the basis of embodiment 1, be with the difference of embodiment 1, driving body adopts arc-shaped protrusions and to be arranged in arc-shaped protrusions and only can along the rigidity take-off lever of Z-direction movement, described arc-shaped protrusions and permanent magnet are rigidly connected, and in the moving process of permanent magnet, drive rigid body to produce displacement output, and then drive deformation skin distortion.
Be specially:
As shown in Figure 3, permanent magnet moves along X-axis between two electromagnets, and arc-shaped protrusions moves under the drive of permanent magnet simultaneously, and then the promotion rigidity body of rod realizes displacement output.
Embodiment 4
Embodiment 4 is the change case of embodiment 1, be with the difference of embodiment 1, described distortion driving body adopts motor or Magnetic driving mechanism, described driving body adopts solid of rotation, described solid of rotation comprises support that upper end is inclined-plane and is close to the support platform that inclined-plane arranges, and the downward-sloping one end of described support platform is provided with projection, projection change in location in solid of rotation rotary course, and then drive deformation skin to produce distortion, as shown in Figure 4.
Embodiment 5
Embodiment 5 is the change case of embodiment 1, is with the difference of embodiment 1, and driving body adopts has the rigid body of arched surface, and described rigid body is provided with movement rod, and described movement rod to be slidably disposed on elastic deformable body and only can to move along Z-direction; When rigid body produces X to displacement under permanent magnet drives, movement rod realizes Z-direction displacement and exports, as shown in Figure 5.
In above-mentioned 5 embodiments, distortion drive unit also directly can adopt magnetostrictive rod, Piezoelectric Driving body (piezoelectric material body), magnetostriction shape memory alloy material body, phase-change material body, utilize the expansion performance of special material to realize distortion to drive, as shown in Fig. 6 to 8.
Embodiment 6
The present embodiment directly adopts shape memory alloy material, SMA (marmem) spring or heat deformable material, utilize the expansion performance of shape memory alloy material, SMA (marmem) spring or heat deformable material, be made into covering, and electrothermal resistance silk is set in covering, realize elevated temperature deformation to drive, as shown in Figure 9.
Embodiment 7
Embodiment 7 adopt gas/liquid pump and inflation/topping up deformable body of being connected with gas/liquid pump as being out of shape drive unit, produce distortion after described inflation/topping up deformable body expands and drive, as shown in Figure 10.
Embodiment 8
A permanent magnetism swing member (as ellipse permanent magnet) with direction abnormity, under two of such as Figure 11 or an electromagnet effect, (back and forth) that can produce under the effect of electromagnetism suction/repulsion swings.When covering is with when face, outer contacts on swing member, will the drive displacement of Δ Z be produced in the change in location of Z-direction in permanent magnetism swing member swing process, and drive covering bowing.This amount of deformation can regulate by applying corresponding current signal to two electromagnet simultaneously.Meanwhile, drive after putting in place (permanent magnetism swing member one end contacts with electromagnet), electromagnet power-off, the permanent magnetic attraction effect of permanent magnetism swing member, makes its activation point keep, and realizes activation point self-locking maintenance.
Comprise direction abnormity permanent magnetism swing member, the rotating shaft connected firmly with paddle blade structure framework, is arranged at the electromagnet at permanent magnetism swing member two ends, and electromagnet and paddle blade structure framework connect firmly.
Embodiment 9
Present embodiments provide a kind of blade system utilizing the paddle device according to any one of embodiment 1 to 7 to be formed, comprise rated generation power closed loop control system, paddle device vibration control system, drived control and power amplifier and above-mentioned paddle device, wherein, described rated generation power closed loop control system is connected with paddle device respectively by drive controller and power amplifier with paddle device vibration control system, as shown in figure 11.
Further, described rated generation power closed loop control system comprises: generated output detecting sensor, rated generation power comparator and generated output control algorithm device, wherein, described generated output detecting sensor is connected with rated generation power comparator, described rated generation power comparator is connected with generated output control algorithm device, described generated output control algorithm device is connected with drive controller and power amplifier, and described drive controller and power amplifier are connected with the distortion drive unit of paddle device.
Further, described paddle device vibration control system comprises: vibration detecting sensor, oscillating signal comparator and device vibration control algorithm device, wherein, described vibration detecting sensor is connected with oscillating signal comparator, described oscillating signal comparator is connected with device vibration control algorithm device, described device vibration control algorithm device is connected with drive controller and power amplifier, and described drive controller and power amplifier are connected with the distortion drive unit of paddle device.
Further, described vibration detecting sensor is arranged on the outside profile face of paddle device.
The blade system of local profile distortion function that what the present embodiment provided have, its controlling method, comprises following any one or multiple step:
Steps A, the closed loop control of rated generation power;
Step B, paddle device vibration control.
Further, described rated generation power closed loop control process comprises:
Step 1, by generated output detecting sensor, monitors in real time to the electric current that blower fan power generation system is produced by paddle device motion;
Step 2, by rated generation power comparator, blower fan power generation system is expected the respective signal of generated output compares as the real-time generated output signal detected with reference to signal and actual power power detection sensor, and the difference of two signals is demarcated as an electrical signal feeding generated output control algorithm device;
Step 3, generated output control algorithm device, calculate in real time under current blower fan power generation system and wind speed according to the electrical signal that rated generation power comparator is sent into, paddle device needs the blade ratio of lift coefficient to drag coefficient coefficient of adjustment, and result of calculation correspondence is produced the drive singal of the expectation blade deformation extent of a generated output adjustment magnitude, send into drived control and power amplifier, and then drive paddle device to produce the distortion of outside profile;
Step 4, generated output control algorithm device calculates the driver output displacement and ouput force of expecting the distortion drive unit that paddle device local deformation degree is corresponding in real time, and calculate when being out of shape command signal when drive unit reaches required drive displacement and driving force in real time by on-line identification mathematical model, then by drive controller and power amplifier, send corresponding forceful electric power signal to structurally variable shape drive unit, make distortion drive unit produce driver output displacement/power, the surface structure configuration of blade correspondence contact is produced by driving distortion.
Further, described paddle device vibration control process comprises:
Step one, pass through vibration detecting sensor, to suffered by paddle device local time become aerodynamic loading and carry out the sensor of real time acceleration detection, and by obtaining suffered local time's changes/alternation wind load directed varying forces to the detection of acceleration simultaneously, acquisition oscillating signal;
Step 2, by oscillating signal comparator, blower fan power generation system is demarcated the real-time oscillating signal that the early warning vibration acceleration signal that bears at position detects as vibration reference signal and vibration detecting sensor to compare, and the difference of two signals is demarcated as an electrical signal feeder vibration control algorithm device;
Step 3, device vibration control algorithm device, calculate in real time under current blower fan power generation system and wind-force according to the electrical signal that oscillating signal comparator is sent into, paddle device needs adjustment or reduces paddle device surface lift and/or resistance difference, namely make a concerted effort, and then the vibration reducing paddle device vibration and/or be delivered on blower fan power generation system sensitive structure; Result of calculation correspondence is produced the drive singal of the expectation paddle device deformation extent of a vibration vibration damping value, send into drive controller and power amplifier;
Step 4, device vibration control algorithm device calculates the driver output displacement and ouput force of expecting the distortion drive unit that paddle device local deformation degree is corresponding in real time, and calculate when being out of shape command signal when drive unit reaches required drive displacement and driving force in real time by on-line identification mathematical model, then by drive controller and power amplifier, send corresponding forceful electric power signal to being out of shape drive unit, distortion drive unit is made to produce driver output displacement/power, and then make the outside profile of paddle device correspondence contact produce passive matrix distortion, realize paddle device stressed, the real-time control of acceleration and vibration.
In the present embodiment:
1, vibration detecting sensor can for having the wind sensor of 3 or 6 degrees of freedom coordinates;
2, vibration detecting sensor is set to array structure, detects surface pressure and ratio of lift coefficient to drag coefficient, corresponding generated output and vibration, drives driver to control
Be specially:
Generated output detecting sensor is one can carry out detection in real time current detection sensor to generation current (and then passing through rated output); Rated point power comparator blower fan to be expected that the respective signal of generated output detects with actual current sensor the E-signal processor part that corresponding real-time generated output signal compares as with reference to signal; After relatively, the difference of two signals is demarcated as an electrical signal and sends into generated output control algorithm device.Generated output control algorithm device is an electrical signal can sent into according to the difference electrical signal of actual power power and rated power and comparator and calculates in real time under current blower fan power generation system and wind speed, fan blade needs a set of computational mathematics model of the fan blade ratio of lift coefficient to drag coefficient coefficient of adjustment, the result of calculation of this model, by the drive singal of the expectation blade deformation extent of corresponding for generation one generated output adjustment magnitude, sends into drive controller.This drive controller can calculate the driver output displacement and ouput force of expecting the structurally variable shape drive unit that blade (locally) deformation extent is corresponding in real time, and calculate the command signal when structurally variable shape drive unit reaches required drive displacement and driving force in real time by on-line identification mathematical model, then power amplifier is passed through, send corresponding forceful electric power signal to structurally variable shape drive unit, be that this device produces driver output displacement/power, the surface structure configuration of blade correspondence contact is produced by driving distortion.
This distortion and deformation extent thereof, by the lift of real-time imaging blade surface and resistance, namely blade-lift coefficient is controlled in real time.Like this, rotation speed of fan can be made to obtain certain limit adjustment, thus the stability that can realize blower fan generated output control.
For blower fan structure vibration control link, fan blade is provided with vibration acceleration sensor (also can simultaneously dispersed placement sensor on blade, and obtain the vibration characteristic signals of whole blade surface or structure).Send out vibration acceleration sensor be a kind of can to suffered by blade local time become aerodynamic loading and carry out the sensor of real time acceleration detection, by can obtain suffered local time's change/alternation wind load directed varying forces to the detection of acceleration simultaneously, thus obtain oscillating signal.Oscillating signal comparator blower fan structure can be demarcated the early warning vibration acceleration signal born at position to detect with vibration acceleration sensor the E-signal processor part that corresponding real-time oscillating signal compares as vibration reference signal; After relatively, the difference of two signals is demarcated as an electrical signal feeder vibration control algorithm device.Device vibration control algorithm device is an electrical signal can sent into according to the difference electrical signal of actual vibration signal and specified early warning oscillating signal and oscillating signal comparator and calculates in real time under current blower fan structure system (vibration passing model) and wind-force, fan blade needs adjust or reduce fan blade surface liter, resistance difference (making a concerted effort), thus reduction blade vibrates a set of computational mathematics model living or be delivered to the vibration on blower fan sensitive structure.The result of calculation of this model, by the drive singal of the expectation blade deformation extent of generation one correspondence vibration vibration damping value, sends into drive controller.This drive controller can calculate the driver output displacement and ouput force of expecting the structurally variable shape drive unit that blade (locally) deformation extent is corresponding in real time, and calculate the command signal when structurally variable shape drive unit reaches required drive displacement and driving force in real time by on-line identification mathematical model, then power amplifier is passed through, send corresponding forceful electric power signal to structurally variable shape drive unit, make this device produce driver output displacement/power, the surface structure configuration of blade correspondence contact is produced by driving distortion.This distortion and deformation extent thereof, the liter of real-time imaging blade surface, resistance are made a concerted effort, namely stressed the and acceleration/vibration of blade can be controlled in real time.
For above about generated power control system and vibration control system, operationally, can according to priority and operating mode independent operating or combined running.
The key link of the present embodiment is: paddle blade structure (profile) the deformable drive unit that paddle device wind load liter, resistance regulate and control with joint efforts.It can be produced by the excitation electric signal of reception control command generation and contribute to the driving behavior that blower fan generated output is stablized and/or blower fan structure vibration is alleviated.
According to being controlled the area of covering, structure or change in location, the distortion drive unit used can be combination or the array of more than one monomer distortion drive unit, by there being the single driving of sequential to these distortion drive units, or series and parallel drives simultaneously and realizes the driving of large stressed-skin construction.
Above specific embodiments of the invention are described.It is to be appreciated that the present invention is not limited to above-mentioned particular implementation, those skilled in the art can make various distortion or amendment within the scope of the claims, and this does not affect flesh and blood of the present invention.
Claims (10)
1. one kind has the paddle device of local profile distortion function, it is characterized in that, comprise paddle blade structure framework and distortion drive unit, the outside profile of described paddle blade structure framework connects firmly deformation skin on local location, described distortion drive unit is corresponding with deformation skin position to be arranged, and described deformation skin deforms under the driving of distortion drive unit;
Described distortion drive unit is one or more, and multiple distortion drive unit forms composite structure or array structure.
2. the paddle device with local profile distortion function according to claim 1, it is characterized in that, each distortion drive unit includes displacement driver, institute's displacement drive is arranged on paddle blade structure framework, and extend displacement or ouput force displacement by producing, drive deformation skin distortion; Or
Each distortion drive unit includes displacement driver and displacement exports excessive structural, and institute's displacement drive exports excessive structural by displacement and contacts with deformation skin, and extends displacement or ouput force displacement by producing, and drives deformation skin distortion.
3. the paddle device with local profile distortion function according to claim 2, is characterized in that, institute's displacement drive adopts following any one or a various structures:
-comprising at least one electromagnet and be arranged at least one permanent magnet in electromagnet magnetic link, formation control magnetic field, described permanent magnet moves under the driving force of controlling magnetic field; Described permanent magnet is rigidly connected driving body, and described driving body produces displacement and exports under the drive of permanent magnet, and then drives deformation skin to produce distortion;
-the solid of rotation that comprises driving mechanism and driven by driving mechanism, it is the support on inclined-plane and the support platform being close to inclined-plane setting that described solid of rotation comprises upper end, the downward-sloping one end of described support platform is provided with projection, projection change in location in solid of rotation rotary course, and then drive deformation skin to produce distortion;
-comprising electromagnet and permanent magnet, described permanent magnet is direction obform body, and the two ends magnetic pole of described direction obform body around axle wallowing motion, forms displacement difference under magnetic force, and then drives deformation skin to produce distortion;
-magnetostrictive rod, produces distortion by magnetic pumping effect, and then drives deformation skin distortion;
-piezoelectric material body, produces distortion by voltage signal effect, and then drives deformation skin distortion;
-magnetostriction shape memory alloy material body or phase-change material body, produce distortion after being heated up by electric excitation effect, and then drive deformation skin distortion;
-inflation/topping up deformable body of comprising air pump/liquid pump and being connected with air pump/liquid pump, described inflation/topping up deformable body expansion rear driving deformation skin deforms.
4. the paddle device with local profile distortion function according to claim 3, is characterized in that, described driving body adopts any one structure following:
-elastic deformable body, there is deformation in described elastic deformable body, and then drive deformation skin to produce distortion in the moving process of permanent magnet;
-there is the rigid body of arched surface, described rigid body is provided with movement rod, and described movement rod to be slidably disposed on elastic deformable body and only can to move along Z-direction; When rigid body produces X to displacement under permanent magnet drives, movement rod realizes Z-direction displacement and exports;
-rigid displacement take-off lever, described rigid displacement take-off lever produces displacement and exports in the moving process of permanent magnet, and then drives deformation skin distortion;
-arc-shaped protrusions and to be arranged in arc-shaped protrusions and only can along the rigidity take-off lever of Z-direction movement, described arc-shaped protrusions and permanent magnet are rigidly connected, and in the moving process of permanent magnet, drive rigid body to produce displacement export, and then drive deformation skin to be out of shape.
5. the paddle device with local profile distortion function according to claim 3, it is characterized in that, described permanent magnet is permanent magnet slide block, and is arranged on the both sides magnetic pole of electromagnet by slide.
6. the paddle device with local profile distortion function according to claim 1, it is characterized in that, described deformation skin adopts shape memory alloy material or heat deformable material, each distortion drives material bodies all to adopt electrothermal resistance silk, and described deformation skin heats up and produces distortion under the effect of electrothermal resistance silk.
7. the paddle device with local profile distortion function according to claim 6, is characterized in that, described electrothermal resistance silk and deformation skin one-body molded.
8. one kind has the blade system of local profile distortion function, it is characterized in that, comprise any one of rated generation power closed loop control system, paddle device vibration control system, drived control and power amplifier and claim 1 to 7 or appoint the multinomial described paddle device with local profile distortion function, wherein, described rated generation power closed loop control system is connected with paddle device respectively by drive controller and power amplifier with paddle device vibration control system.
9. the blade system with local profile distortion function according to claim 8, it is characterized in that, described rated generation power closed loop control system comprises: generated output detecting sensor, rated generation power comparator and generated output control algorithm device, wherein, described generated output detecting sensor is connected with rated generation power comparator, described rated generation power comparator is connected with generated output control algorithm device, described generated output control algorithm device is connected with drive controller and power amplifier, described drive controller and power amplifier are connected with the distortion drive unit of paddle device,
Described paddle device vibration control system comprises: vibration detecting sensor, oscillating signal comparator and device vibration control algorithm device, wherein, described vibration detecting sensor is connected with oscillating signal comparator, described oscillating signal comparator is connected with device vibration control algorithm device, described device vibration control algorithm device is connected with drive controller and power amplifier, and described drive controller and power amplifier are connected with the distortion drive unit of paddle device;
Described vibration detecting sensor is arranged on the outside profile face of paddle device.
10. there is a controlling method for the blade system of local profile distortion function, it is characterized in that, comprise following any one or multiple step:
Steps A, the closed loop control of rated generation power;
Step B, paddle device vibration control;
Wherein:
Described rated generation power closed loop control process comprises:
Step 1, by generated output detecting sensor, monitors in real time to the electric current that blower fan power generation system is produced by paddle device motion;
Step 2, by rated generation power comparator, blower fan power generation system is expected the respective signal of generated output compares as the real-time generated output signal detected with reference to signal and actual power power detection sensor, and the difference of two signals is demarcated as an electrical signal feeding generated output control algorithm device;
Step 3, generated output control algorithm device, calculate in real time under current blower fan power generation system and wind speed according to the electrical signal that rated generation power comparator is sent into, paddle device needs the blade ratio of lift coefficient to drag coefficient coefficient of adjustment, and result of calculation correspondence is produced the drive singal of the expectation blade deformation extent of a generated output adjustment magnitude, send into drived control and power amplifier, and then drive paddle device to produce the distortion of outside profile;
Step 4, generated output control algorithm device calculates the driver output displacement and ouput force of expecting the distortion drive unit that paddle device local deformation degree is corresponding in real time, and calculate when being out of shape command signal when drive unit reaches required drive displacement and driving force in real time by on-line identification mathematical model, then by drive controller and power amplifier, send corresponding forceful electric power signal to structurally variable shape drive unit, make distortion drive unit produce driver output displacement/power, make the surface structure configuration of blade correspondence contact produce by driving distortion;
Described paddle device vibration control process comprises:
Step one, pass through vibration detecting sensor, to suffered by paddle device local time become aerodynamic loading and carry out the sensor of real time acceleration detection, and by obtaining suffered local time's changes/alternation wind load directed varying forces to the detection of acceleration simultaneously, acquisition oscillating signal;
Step 2, by oscillating signal comparator, blower fan power generation system is demarcated the real-time oscillating signal that the early warning vibration acceleration signal that bears at position detects as vibration reference signal and vibration detecting sensor to compare, and the difference of two signals is demarcated as an electrical signal feeder vibration control algorithm device;
Step 3, device vibration control algorithm device, calculate in real time under current blower fan power generation system and wind-force according to the electrical signal that oscillating signal comparator is sent into, paddle device needs adjustment or reduces paddle device surface lift and/or resistance difference, namely make a concerted effort, and then the vibration reducing paddle device vibration and/or be delivered on blower fan power generation system sensitive structure; Result of calculation correspondence is produced the drive singal of the expectation paddle device deformation extent of a vibration vibration damping value, send into drive controller and power amplifier;
Step 4, device vibration control algorithm device calculates the driver output displacement and ouput force of expecting the distortion drive unit that paddle device local deformation degree is corresponding in real time, and calculate when being out of shape command signal when drive unit reaches required drive displacement and driving force in real time by on-line identification mathematical model, then by drive controller and power amplifier, send corresponding forceful electric power signal to being out of shape drive unit, distortion drive unit is made to produce driver output displacement/power, and then make the outside profile of paddle device correspondence contact produce active drive distortion, realize paddle device stressed, the real-time control of acceleration and vibration.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410428979.2A CN104295444A (en) | 2014-08-27 | 2014-08-27 | Blade device and system with local contour deformation function and control method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105416538A (en) * | 2015-12-07 | 2016-03-23 | 哈尔滨工业大学 | Marine screw propeller with deformable paddles |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105416538A (en) * | 2015-12-07 | 2016-03-23 | 哈尔滨工业大学 | Marine screw propeller with deformable paddles |
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Application publication date: 20150121 |