CN103381871B - Many magnetic sheets well-distributed rotating disc type sensitive member - Google Patents
Many magnetic sheets well-distributed rotating disc type sensitive member Download PDFInfo
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- CN103381871B CN103381871B CN201310309349.9A CN201310309349A CN103381871B CN 103381871 B CN103381871 B CN 103381871B CN 201310309349 A CN201310309349 A CN 201310309349A CN 103381871 B CN103381871 B CN 103381871B
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Abstract
The present invention's many magnetic sheets well-distributed rotating disc type sensitive member belongs to the technical field that magnetic induction provides signal, particularly relates on rotatable parts, carries out the technology that multi-point magnetic induction provides control signal.Rolling disc is pasted with multiple permanent magnetism sheets of annular arrangement distribution, in certain one side of rolling disc, the magnetic polarity of adjacent permanent magnet piece is contrary, and namely the magnetic polarity distribution mode of the upper whole permanent magnetism sheet of certain one side of rolling disc is N pole, S pole, N pole Magnetic sheet layer is seized on both sides by the arms having the rolling disc of permanent magnetism sheet surface and permanent magnetism sheet surface mount; Hall is located at the position close to permanent magnetism sheet.Advantage: utilize adjacent permanent magnet piece magnetic polarity to become the contrary distribution mode of NS, make Hall obtain square-wave signal, is convenient to carry out digital processing to signal.
Description
Technical field
The invention belongs to the technical field that magnetic induction provides signal, particularly relate on rotatable parts, carry out the technology that multi-point magnetic induction provides control signal.
Background technology
The Chinese patent 201020295192.0 " hooking claw moment sensor " of Yebao Vehicle Material Industry's application discloses a kind of morpet sensing device, sensing device comprises magnetic part and elastic component coordinates, and experiences the sensing device of moment.After period of service is long, the elasticity modulus change of elastic component will cause the control effects of transducing signal and controlled motor to change, and power-assisted effect becomes to be needed to mismatch with the power-assisted of people.And complicated with the project organization of elastic component, manufacturing cost is high.
The Chinese patent 01201843.0 " automatic detecting device of electric booster bicycle " of University of Science & Technology, Beijing's application discloses a kind of automatic detecting device of electric booster bicycle, Poul Dorset Sheep is pedaled power, speed and is turned to, this device establishes magnetic patch respectively on the inside and outside wheel disc of relative motion, interior wheel disc there is spring, with spring reset between inside and outside wheel disc, represent the power of pedaling, speed with the electric signal that the magnetic patch that the Hall of two on support surveys relative motion on inside and outside wheel disc produces and turn to.
Shortcoming (1) is not durable with elastic component: after period of service is long, and the elasticity modulus change of elastic component will cause the control effects of transducing signal and controlled motor to change, and power-assisted effect becomes to be needed to mismatch with the power-assisted of people, and complex structure, cost is high.
Shortcoming (2) sine wave output makes magnetic patch group Edge Distance can not be less than 4 centimetres, general is good with 5 centimetres, and make can establish magnetic patch group number very little, man-machine cooperation is undesirable: each magnetic patch group is identical, what then Hall exported is that sinusoidal waveform is as control signal, certain peak valley difference must be had as control signal sinusoidal waveform, magnetic patch group due to this patent needs certain length to represent forward and reverse motion, be that the rolling disc circular trace of 20 centimetres establishes at most 8 magnetic patch groups at diameter, general is good with 5, and Hall just can have the sine wave signal of controlling functions.That is, this technical scheme of 01201843.0 patent, for morpet, magnetic patch group limited amount is only within 8, and very little, man-machine cooperation is undesirable for control signal.If but more than 8 magnetic patch groups, when people's treadmill is very fast, the signal graph that Hall exports is close to a horizon, and this signal does not have controlling functions, can not control electrical motor, when making it need power-assisted especially, loses assist function.
Shortcoming (3) signal blind zone reaches miter angle, need during startup really to can not get power-assisted when power-assisted: well-known, it is minimum in summit moment that people steps on bicycle pedal, the region needing most power-assisted from leaving 10-45 degree angle, summit, but the angle between each magnetic patch group of this patent is 45 degree, leave summit 10-45 degree angular zone neither one magnetic patch group, also with regard to neither one control signal at stretcher, when consequently needing most power-assisted, but the motor of morpet really can not power-assisted.
In a word, except with except the not durable complex structure again of elastic component, because of the fit structure feature of Hall and magnetic patch group, rotating disk size diameter is within 20 centimetres, and having placed restrictions on magnetic patch group quantity is 8 groups, and magnetic patch group number can not arbitrarily increase, make man-machine cooperation undesirable, and can not get power-assisted when starting, power-assisted demand is not mated with providing power-assisted, and the traveling comfort of cyclist is poor; As increased magnetic patch group quantity by force, its transducing signal loses again Power assisted control function.
The Chinese patent 03264387.X " timing sensor of electric boosting bicycle " of Wang Naikang application discloses without elastic component, only with dynamic, fixed two rotating disks, two permanent magnetic steels are inlayed above Moving plate, three Hall elements are inlayed above price fixing, bicycle pedal circles, each Hall produces two pulses, then three Hall elements produce six pulses.Divide folding can obtain three features, four shortcomings are as follows:
Feature (1) is acquisition six impulse singlas, can only be each permanent magnetic steel same pole in one side: each Hall will produce two pulses, can only be then the same face that the same pole of two permanent magnetic steels is located at Moving plate, namely in certain one side of Moving plate, two permanent-magnet magnetic steel capital be the arctic or be all the South Pole.If at the same face of Moving plate, a permanent magnetic steel is the arctic, and another is the South Pole, then pedal circles, and each Hall just can only produce a pulse, and three Halls just only have three pulses, and this does not just conform with this patent specification and describes.In order to increase pulse count, improving control effects, can only be that each permanent magnetic steel same pole is in one side.
Feature (2) permanent magnetic steel is for representing pedal fixed position, three Halls represent pedal travel position: because pedal and Moving plate are synchronous axial system, so two positions fix a permanent magnetic steel respectively on the Moving plate corresponding with two pedals, some pedals turn where, then corresponding permanent magnetic steel also turns where; But only have and turn in the position having Hall, just send control signal by Hall, the power-assisted that the motor of commander's morpet produces to be needed is rotated.
Feature (3) can not represent the position of the middle Different periods pedal travel that circles because of a Hall, then just can not only with a Hall: the Different periods of pedal in circling, very big difference is had to power-assisted demand, embody the change of this power-assisted demand, this patent three Halls are located at three positions within 180 degree of angles respectively, two permanent magnetic steels are located at two pedal positions respectively, pedal turns in the position having Hall, with regard to output signal, this Hall represents that pedal reaches the position of this Huo Yuan.But there is again shortcoming below with multiple Hall.
These features as morpet sensor have three shortcomings:
The fixed position that shortcoming (1) does not have the permanent magnetic steel of otherness to represent two pedals respectively with two, just can only represent the turned position of pedal with multiple Hall: two permanent magnetic steels do not have otherness, advantage is can regardless of the fixed position representing two pedals respectively of left and right pin, make the raw power-assisted demand of its left and right human hair combing waste, identical motor power-assisted effect can be produced; But shortcoming is the turned position that permanent magnetic steel inherently can not represent pedal, and can only be located at multiple Hall the turned position that different angle positions represents pedal, so only with a Hall, and multiple Hall can not must be used.
Shortcoming (2) can not only with a Hall, and three Halls must cause three control signals to have original segment error, make the distortion of power-assisted demand model, naturally producing power-assisted exports with power-assisted demand inconsistent: no matter morpet is one or two motor, and its transducing signal controlling motor just can only can reach with a transducing signal input electric machine controller object controlling motor; And this patent controls motor with three Halls, then electric machine controller could be inputted after three of a three Halls control signal must being merged into a merging control signal.The parameter sensing of three Halls can not be the same, particularly due to after variation of ambient temperature, period of service length, the parameter sensing of three Halls may be widely different, when its result causes identical power-assisted demand, the output of different Hall be different voltages, cause motor to produce different power-assisteds to export, power-assisted exports with power-assisted demand inconsistent; During in like manner identical power-assisted demand, the output of different Hall may be identical voltage again, cause motor to produce same power-assisted and export, also produce power-assisted and export the problem inconsistent with power-assisted demand.
Shortcoming (3) merges control signal and easily produces signal drift, merging control signal is not mated with electric machine controller, power-assisted demand model distortion: due to variation of ambient temperature, after period of service is long, the parameter sensing of three Halls may be widely different, three control signal point of connection of three Halls must change, the merging control signal that then identical power-assisted demand produces will produce the signal drift of segmenting, merge control signal as an overall generation signal distortion, i.e. power-assisted demand model distortion, any one causing electric machine controller to select three control signals all can produce power-assisted as benchmark and export the problem inconsistent with power-assisted demand.
Shortcoming sensing site can not arbitrarily increase, sensing site very little, motor runs just not steady, people is by bike made to feel very uncomfortable: to cause because Hall quantity is greater than one owing to having shortcoming (1) and shortcoming (2) all, clearly Hall quantity is measured more and more, and shortcoming (1) and shortcoming (2) show more serious.So the morpet that this patent provides can only be make people by bike feel the morpet that traveling comfort is very bad.
Shortcoming (5) signal blind zone reaches 42 degree of angles, need during startup really to can not get power-assisted when power-assisted: well-known, it is minimum in summit moment that people steps on bicycle pedal, the region needing most power-assisted from leaving 10-45 degree angle, summit, but the angle between each Hall of this patent is 42.5-43.5 degree, leave summit 10-42 degree angular zone neither one Hall, also with regard to neither one control signal at stretcher, when consequently needing most power-assisted, but the motor of morpet really can not power-assisted.
In a word, this patent is the technical scheme controlling assistant mode with multiple Hall, because the turned position of pedal can only be represented with multiple Hall, multiple control signals of multiple Hall must have original error, it merges control signal and easily produces signal drift again, all can cause the distortion of power-assisted demand model, i.e. the identical power-assisted demand of different time, but obtain different power-assisted effects; Hall quantity is measured more and more, and the distortion of power-assisted demand model is more serious, has placed restrictions on your quantity, Hall small number and produce motor and run just steady, makes people by bike feel very uncomfortable, and can not get power-assisted when starting.Make it want power-assisted demand model undistorted, and want motor to operate steadily on this two problems always to attend to one thing and lose sight of another, can not get both.
International patent application WO/099/13558AI discloses the sensor controlling electrical motor on electrical motor, this sensor arranges depression on rolling disc, permanent magnets is entrapped in the depression of rolling disc, this technique bores depression on rolling disc, can only be entrapped in the depression of rolling disc by hand many pieces of permanent magnets one piece a piece, consumption very consuming time is artificial, and caves in and the required size shape no-float of permanent magnets, and this point is difficult to accomplish.Be greater than permanent magnets because cave in, then rolling disc is when rotating, and permanent magnets is vibrated in the valley, very fragile permanent magnets; Depression is flush fit permanent magnets, is difficult to again permanent magnets to be entrapped in the depression of rolling disc.
Summary of the invention
The object of this invention is to provide the sensitive member only obtaining speed and acceleration signal with each permanent magnetism sheet on a Hall and rolling disc, a kind of multiple permanent magnetism sheet is arranged that technique is simple, permanent magnetism sheet can not be shifted and sensing model is stablized, a kind of can in induction region, permanent magnetism sheet quantity can be increased as far as possible, utilize rolling disc displacement information to greatest extent, the sensitive member that output information is many.Be used on morpet, measure moment, the morpet sensor sensitive member that motor operates steadily without elastic component and other machinery.
Design of the present invention is: permanent magnetism sheet is seized on both sides by the arms to be fixed on rolling disc and to seize on both sides by the arms between magnetic sheet layer, and during turn disc, permanent magnetism sheet remains on the original position of rolling disc, can not move relative to rolling disc, and sensing model is stablized; Can in receptive field at a Hall, a rolling disc carries out magnetic polarity change with identical multiple permanent magnetism sheets, and the signal that Hall is produced is square wave, and controlling functions is stronger, more.For morpet, the quantity of information expressing motion of foot state is more.
Structure of the present invention is:
Many magnetic sheets well-distributed rotating disc type sensitive member, comprise one piece of rolling disc 1 and many pieces of permanent magnetism sheets 2, the size of many pieces of permanent magnetism sheets 2 is identical, shape is identical, magnetic flow is identical, it is characterized in that: rolling disc 1 is pasted with many pieces of permanent magnetism sheets 2, the rounded track distribution equably of these many pieces of permanent magnetism sheets 2, namely every piece of permanent magnetism sheet 2 to circle center, circular rail trace 5 place identical, the adjacent two pieces of permanent magnetism sheets 2 of distance between distance identical; In certain one side of rolling disc 1, the magnetic polarity of adjacent permanent magnet piece 2 is contrary, and namely the magnetic polarity distribution mode of the upper whole permanent magnetism sheet 2 of certain one side of rolling disc 1 is N pole, S pole, N pole, S pole, N pole, S pole
Having the rolling disc 1 of permanent magnetism sheet 2 surface and permanent magnetism sheet 2 surface mount to seize magnetic sheet layer 6 on both sides by the arms, permanent magnetism sheet 2 is seized on both sides by the arms to be fixed on rolling disc 1 and to seize on both sides by the arms between magnetic sheet layer 6;
Also comprise a Hall 3, Hall 3 is positioned at certain one side of rolling disc 1, and Hall 3 is located at close to permanent magnetism sheet 2 and can experiences the position of permanent magnetism sheet 2 magnetic flow, has spacing between Hall 3 and permanent magnetism sheet 2; Hall 3 is Halls opposite magnetic polarities being produced to square wave output signal.
Prior art is all on rolling disc, arrange depression or hole, in the depression that permanent magnets is entrapped in rolling disc or hole, this technique will bore depression or hole on rolling disc, can only by hand in the depression being entrapped in rolling disc of many pieces of permanent magnets one piece a piece or hole, consumption very consuming time is artificial, and depression or the required size shape no-float of hole and permanent magnets, this puts and is difficult to accomplish.Because depression or hole are crossed be greater than permanent magnets, then during rolling disc, permanent magnets is vibrated in depression or hole, very fragile permanent magnets; Depression or hole are flush fit permanent magnets, in the depression being difficult to again permanent magnets to be entrapped in rolling disc or hole.For solving the problem of prior art, the method for the present invention's stickup is arranged on permanent magnetism sheet 2 on rolling disc 1, mainly can greatly reduce technique permanent magnetism sheet 2 is fixed on rolling disc 1.For preventing the solid problem that is pasted not strongly, the present invention have the rolling disc 1 of permanent magnetism sheet 2 surface and permanent magnetism sheet 2 surface mount seize magnetic sheet layer 6 on both sides by the arms, permanent magnetism sheet 2 is seized on both sides by the arms to be fixed on rolling disc 1 and to seize on both sides by the arms between magnetic sheet layer 6, then the rotation of rolling disc 1 can not make permanent magnetism sheet 2 be shifted, ensure that the relative position between many pieces of permanent magnetism sheets 2 is constant, the sensing capabilities of sensitive member is constant, and sensing model is stablized.Paste one piece seize on both sides by the arms magnetic sheet layer 6 than prior art by hand more convenient, simple in the depression being entrapped in rolling disc 1 of many pieces of permanent magnets one piece a piece or hole, can not permanent magnet be damaged.
In a word, the present invention is manufacturing the process aspect of sensitive member, and the present invention, with seizing magnetic sheet layer 6 structure on both sides by the arms as technical guarantee, can be located at permanent magnetism sheet 2 on rolling disc 1 by the method for pasting, then have and make simple, the convenient thus advantage reduced costs; Do not have prior art that when rolling disc 1 rotates, permanent magnetism sheet 2 and rolling disc 1 collide and damage the problem of permanent magnetism sheet 2, and visible the present invention has obvious technological advance than prior art.
Seize magnetic sheet layer 6 on both sides by the arms and select non-magnet_conductible material, or make with non-magnet_conductible material.
Rolling disc 1 can be the on-deformable plate of material such as plastic flagstone, the exhausted plate of high strength, copper coin, aluminium sheet.When using sensitive member, rolling disc 1 will rotate, and the center of rotation is exactly the center of multiple permanent magnetism sheet 2 one-tenth annular arrangement distribution place circles.
Multiple permanent magnetism sheet 2 is in annular arrangement 6 scope, the object of annular arrangement distribution is become to be only to experience with a Hall 3 state of kinematic motion of whole permanent magnetism sheet 2 on rolling disc, namely movement position and the speed of whole permanent magnetism sheet 2 on rolling disc is experienced, and the change of speed, or title acceleration/accel, this Hall 3 just can be expressed the state of kinematic motion of a permanent magnetism sheet 2 continuous print electric signal export electric signal, again because whole permanent magnetism sheet 2 is separately fixed on rolling disc and rolling disc 1, then the continuous electric signal that Hall 3 produces just can express the state of kinematic motion of rolling disc.If this continuous electric signal for controlling other object, this continuous electric signal is exactly control signal.If for the motor controlling morpet, also need with micro controller system or other electron component as sensing signal processor, position in control signal, speed, acceleration/accel key element are converted to the power-assisted signal needing power-assisted how many, the function converted is exactly power-assisted demand model, or claims power-assisted model.
Hall 3 is located at close to permanent magnetism sheet 2 and can experiences the position of permanent magnetism sheet 2 magnetic flow, and object is the state of kinematic motion experiencing permanent magnetism sheet 2 with Hall 3, thus experiences the state of kinematic motion of rolling disc 1, i.e. movement position, speed, acceleration/accel.
The magnetic polarity of adjacent permanent magnet piece 2 is very important technical characteristic on the contrary, the magnetic polarity distribution mode of whole permanent magnetism sheet 2 is N pole, S pole, N pole, S pole, N pole, S pole ... Hall 3 is made to export high and low alternate square-wave signal, because as the rolling disc that limited size is stopped, rotating and within one week, will obtain as far as possible many accurate variable signals, should be select square wave certainly.The time of the peak-to-valley value change of square-wave signal is short, within the regular hour, can produce as far as possible many signals having control meaning.The structure that the magnetic polarity of adjacent permanent magnet piece 2 is contrary produces square wave, and the structure generation sinusoidal waveform that the magnetic polarity of adjacent permanent magnet piece 2 is identical, during especially for morpet, it is 10-15 centimetre that rolling disc as sensing element is generally placed restrictions at diameter, the signal of controlling functions will be obtained in this limit scope, rotate one week, produce more than the available pulse number of generation sinusoidal waveform 7-9 times of square wave.Nature, to the control effects of morpet more, people coordinates with car better, and rider people feels more comfortable for the magnetic polarity of adjacent permanent magnet piece 2 contrary structure.
The thickness of permanent magnetism sheet 2 is 0.2 ~ 0.5 millimeter.As long as select magnetic flow to be 146---279 (BH) max/KJm
-3permanent magnetism sheet 2, the thickness of permanent magnetism sheet 2 is 0.2 ~ 0.5 millimeter and just can ensures that Hall 3 normally can experience the magnetic field of permanent magnetism sheet 2, makes Hall 3 export electric signal.Experiment proves, when the magnetic flow of permanent magnetism sheet 2 is 146---279 (BH) max/KJm
-3time, the thickness of permanent magnetism sheet 2 is 0.2 ~ 0.5 millimeter, and Hall 3 can normally be experienced the magnetic field of permanent magnetism sheet 2 and export electric signal.Select the thickness of permanent magnetism sheet 2 to be 0.2 ~ 0.5 millimeter, object is the weight alleviating permanent magnet, because alleviate the weight of permanent magnet, when can make rolling disc 1, the inertia of permanent magnetism sheet 2 is little, and permanent magnetism sheet 2 can not be shifted, and sensing model is stablized.
Seize a certain of the financial aluminium sheet of magnetic sheet layer 6 or sheet plastic on both sides by the arms.Finance aluminium sheet or sheet plastic compress the use of permanent magnetism sheet 2 with rolling disc 1.
Seizing magnetic sheet layer 6 on both sides by the arms is having rolling disc 1 surface and the permanent magnetism sheet 2 surface casting lining cement liquid of permanent magnetism sheet 2, becoming solid layer after this lining cement liquid solidifies.Rolling disc 1 surface and permanent magnetism sheet 2 surface is cast in lining cement liquid, fixing permanent magnetism sheet 2 technique of seizing magnetic sheet layer 6 on both sides by the arms is become simpler than the technique of fixing permanent magnetism sheet 2 with financial aluminium sheet or sheet plastic after solidifying, and the effect of fixing permanent magnetism sheet 2 not shift position is also better, sensing model is more stable.
Had alleviate permanent magnetism sheet 2 weight, compress and seize permanent magnetism sheet 2, lining cement liquid casting solidification and after cementing the technology of permanent magnetism sheet 2, rolling disc 1 is pasted the problem that many pieces of permanent magnetism sheets 2 would not have permanent magnetism sheet 2 be shifted when rolling disc 1 rotates on both sides by the arms, sensing model is stable.In the depression then not needing, by the prior art of complex process, permanent magnet is entrapped in rolling disc or hole.
Hall 3 is located at just to the position of the circular rail trace 5 of many pieces of permanent magnetism sheets 2.Because Hall 3 spacing can be had to experience permanent magnetism sheet 2 magnetic flow and exports the parts of electric signal, again in order to reduce the volume of permanent magnetism sheet 2 as far as possible, making it that as far as possible many on rolling disc 1 permanent magnetism sheet 2 is set, the permanent magnetism sheet 2 as far as possible reduced can be responded to by Hall 3; Hall 3 should be located at just to the position of circular rail trace 5, and is preferably located at the position close to the circular rail trace that can run through whole permanent magnetism sheet 2.
Rolling disc 1 is provided with centre hole in the circle scope of circular rail trace 5 place of many pieces of permanent magnetism sheets 2.If rolling disc 1 will be set on a turning cylinder and use, rolling disc 1 will be established a hole wearing turning cylinder; For ensureing that rolling disc 1 is when rotating with turning cylinder, Hall 3 can experience the motor message of each permanent magnetism sheet 2 on rolling disc 1, then the center of scope is justified at circular rail trace 5 place that hole should be located at multiple permanent magnetism sheet 2 that wears on rolling disc 1, becomes centre hole.That is, centre hole is not necessarily circular, can be the shapes such as square, triangle, can be nested with the turning cylinder of the shapes such as square, triangle, but the interior sky of centre hole necessarily comprises the center of circular rail trace 5 place circle, and a Hall 3 could be used to experience the motor message of whole permanent magnetism sheet 2 on rolling disc 1 rolling disc.
Rolling disc 1 be the plastic flagstone of non-magnet_conductible material, aluminum board, copper material plate a certain.Because the present invention is the structure that the magnetic polarity of adjacent permanent magnet piece 2 is contrary, the edge of adjacent permanent magnet piece 2 can be made almost can be affixed Hall 3 also can be made to export the electric signal having controlling functions.The plastic flagstone of the most handy non-magnet_conductible material, aluminum board, copper material plate, or other on-deformable rolling disc.
Advantage of the present invention: structure is simple, cost is low, permanent magnetism sheet quantity on permanent magnetism loop is not placed restrictions on, the impulse singla of outputting standard, there is no signal blind zone, only with one group of output signal of a Hall, just the total movement state of energy perfect representation Moving plate, output signal can not drift about in distortion, for morpet, power-assisted is exported and highly can coordinate with power-assisted demand and cyclist is felt well.
The technique of ［ 1 ］ pasting permanent magnetism sheet is simple: the technique of rolling disc being pasted many pieces of permanent magnetism sheets is simple.Prior art is all on rolling disc, arrange depression or hole, in the depression that permanent magnets is entrapped in rolling disc or hole, this technique will bore depression or hole on rolling disc, can only by hand in the depression being entrapped in rolling disc of many pieces of permanent magnets one piece a piece or hole, consumption very consuming time is artificial, and depression or the required size shape no-float of hole and permanent magnets, this puts and is difficult to accomplish.Because depression or hole are crossed be greater than permanent magnets, then during rolling disc, permanent magnets is vibrated in depression or hole, very fragile permanent magnets; Depression or hole are flush fit permanent magnets, in the depression being difficult to again permanent magnets to be entrapped in rolling disc or hole.
［ 2 ］ the permanent magnetism sheet pasted can not shift position: had alleviate permanent magnetism sheet weight, compress and seize permanent magnetism sheet, lining cement liquid casting solidification and after cementing the technology of permanent magnetism sheet on both sides by the arms, rolling disc is pasted many pieces of permanent magnetism sheets and would not have permanent magnetism sheet when turn disc, the problem of displacement is produced relative to rolling disc, permanent magnetism sheet is synchronized with the movement with rolling disc all the time, and sensing model is stablized.In the depression then not needing, by the prior art of complex process, permanent magnet is entrapped in rolling disc or hole.
Prior art embeds permanent magnets in rolling disc depression or hole, is pasted onto with distinguishing in hall sensing signal not obvious with the present invention at rolling disc.But manufacturing the process aspect of sensitive member, the present invention, with seizing magnetic sheet Rotating fields on both sides by the arms as technical guarantee, can be located on rolling disc permanent magnetism sheet by the method for pasting, then had and make simple, the convenient thus advantage reduced costs; Can not when turn disc, permanent magnetism sheet and rolling disc collide and damage permanent magnetism sheet and have durability advantage, and visible the present invention has obvious technological advance than prior art.
［ 3 ］ structure is simple, without elastic component, mechanical fault: experience multiple permanent magnetism sheet with Hall and rotate output signal, the speed provided with Chinese patent 01201843.0 can calculate the principle of moment, available multiple math modeling calculates the moment parameter of morpet, for controlling the motor of morpet, realize power-assisted., cost simple without elastic component, structure is lower than with elastic component and mechanically stressed sensor.After avoiding long-time use, the problem that each mechanical part distortion, mechanical fault, cooperation are not good.
［ 4 ］ magnetic polarity is contrary, export square-wave signal, there is accurate controlling functions,: because the magnetic polarity of adjacent two pieces of permanent magnetism sheets is contrary, and Hall selects Hall opposite magnetic polarities being produced to square wave output signal, then no matter spacing is how many for adjacent two pieces of permanent magnetism sheets, even if very close to each other between adjacent two pieces of permanent magnetism sheets, Hall can export square-wave signal too.As for morpet, the motor controlling morpet with the output signal of square wave is better than with sinusoidal waveform, because rectangle wave energy accomplishes signal point at any time, represent that the signal implication of movement position and speed is accurate, thus can the movement position of Precise Representation booster bicycle pedal and speed, to go out the correct power-assisted demand of this state of kinematic motion with the accurate position of pedal and speed calculation.
［ 5 ］ magnetic polarity of adjacent permanent magnet piece is contrary, permanent magnetism sheet quantity is not placed restrictions on, sensing point position can be increased: because magnetic polarity is contrary as far as possible, export square-wave signal, even if adjacent permanent magnet piece gapless, its signal exported has remained number, differentiable square-wave signal, still has controlling functions, that is can not export the unchanged linear signal not having controlling functions.As for morpet, owing to being placed restrictions on the rolling disc diameter of pedal linkage, just can on the rolling disc of prescribed level, increase permanent magnetism sheet quantity as far as possible, increase sensing point position as far as possible, represent bicycle pedal movement position and speed, Precise Representation state of kinematic motion with as far as possible many transducing signals.
［ 6 ］ magnetic polarity of adjacent permanent magnet piece is contrary, can arrange that permanent magnetism sheet is many, sensing point position is many, the state of kinematic motion of rolling disc is represented accurate: to for morpet, the rolling disc size of fixing permanent magnetism sheet is strictly placed restrictions on, general rolling disc diameter can only within 10-15 centimetre, in order to the magnetic-pole signals making Hall obtain permanent magnetism sheet under the condition having spacing, the diameter of its permanent magnetism sheet is at least Ф 0.6-0.8 centimetre, then the periphery of rolling disc of diameter 10-15 centimetre is zero-lash arranges 35-73 permanent magnetism sheet ［ 10-1*3.14/0.8=35; 15-1*3.14/0.6=73 ］, namely stretcher circles, and Hall can obtain 35-73 signal for controlling the motor of morpet.But if the prior art that adjacent permanent magnet piece magnetic polarity is identical, adjacent permanent magnet piece by 5 centimetres of spacing, then, on diameter 10-15 centimetre rolling disc, can only arrange at most 5-8 permanent magnetism sheet ［ 10-1*3.14/5.8=5; 15-1*3.14/5.6=8 ］.Visible, the art of this patent can arrange permanent magnetism sheet 7-9 doubly ［ 35/5=6 than prior art more; 73/8=9 ］, 30-65 permanent magnetism sheet ［ 35-5=30 is set more; 73-8=65 ］.So rolling disc circles, the art of this patent adds 7-9 turn disc site signal doubly than prior art.7-9 is improve naturally doubly to the electric machine control accuracy rate of morpet, cyclist is made to also improve 7-9 doubly to power-assisted demand accuracy rate, the cooperate degree of car and people improves greatly, and the comfort of cyclist increases greatly, is no longer that fast slow uncomfortable sensation of boosted vehicle of prior art.The present invention asks someone according to the experience of reality, when rolling disc being arranged roughly uniformly 15 permanent magnetism sheets, essentially eliminating prior art and only establishing 5-8 permanent magnetism sheet to make that fast slow uncomfortable sensation of boosted vehicle; When rolling disc being arranged roughly uniformly 20 permanent magnetism sheets, car coordinates oneself to meet human needs with people's, and the sensation of riding boosted vehicle is very comfortable.
［ 7 ］ do not have signal blind zone, power-assisted demand whenever all can obtain the power-assisted matched: this patent can arrange at most 35-73 permanent magnetism sheet at the rolling disc periphery of diameter 10-15 centimetre, and between each permanent magnetism sheet, average angle is 5-10 degree.For morpet, when starting or run, stretcher is from the 35 degree of regions leaving 10-45 degree angle, summit, the position that 4-7 permanent magnetism sheet is leaving 10 degree of angles, summit is had just to have a signal, the then exportable 4-7 of Hall control signal reaction power-assisted demand, can realize any position, have power-assisted just can obtain the excellent technique effect of corresponding power-assisted any time, make the no-float of car and people, cyclist feels laborsaving comfortable again.
［ 8 ］ only with a Hall, a control signal represents the total movement state of rolling disc, the state of kinematic motion of control signal and rolling disc is completely the same, control signal and Man's Demands completely the same: multiple permanent magnetism sheet is fixed on rolling disc, permanent magnetism sheet and rolling disc synchronous axial system, whole permanent magnetism sheet motor messages is experienced with a Hall, then the control signal that exports of Hall and the state of kinematic motion of rolling disc completely the same, just completely the same with Man's Demands, control signal does not have original segment error and signal drift problem yet.Even if hall sensing parameter changes, be also that whole control signal moves in parallel, as long as the range of receiving receiving the electric machine controller of Hall control signal is wider, the control effects of the Hall control signal changed becomes systematicness to change.As for morpet, power-assisted demand model can not distortion, and power-assisted exports the matching relationship still keeping original model with power-assisted demand, and the systematicness that cyclist is easy to grasp this power-assisted ability changes.
Accompanying drawing explanation
Fig. 1 rolling disc is uniformly distributed the sensitive member structural representation that multiple N-S replaces permanent magnetism sheet;
Fig. 2 is that on rolling disc, high density is uniformly distributed the sensitive member structural representation that multiple N-S replaces permanent magnetism sheet;
Fig. 3 is cross-sectional view of the present invention.
In figure, 1 be rolling disc, 2 are permanent magnetism sheets, 3 are Halls, 5 are circular rail traces, 6 is seize magnetic sheet layer on both sides by the arms.
Detailed description of the invention
Embodiment 1, seize on both sides by the arms magnetic sheet layer cast polyurethane many magnetic sheets well-distributed rotating disc type sensitive member
As Fig. 1,3, be pasted with 20 permanent magnetism sheets 2 with in the plane in a face of highstrenghtpiston's injection molded diameter 10.0 centimetres of rolling discs 1.Having the rolling disc 1 of permanent magnetism sheet 2 surface and permanent magnetism sheet 2 surface to be also pasted with and to seize magnetic sheet layer 6 on both sides by the arms, permanent magnetism sheet 2 is seized on both sides by the arms to be fixed on rolling disc 1 and to seize on both sides by the arms between magnetic sheet layer 6.The thickness of permanent magnetism sheet 2 is 0.3 millimeter, and the magnetic flow of permanent magnetism sheet 2 is 146---279 (BH) max/KJm
-3in some values.
Seizing magnetic sheet layer 6 on both sides by the arms is having rolling disc 1 surface and the permanent magnetism sheet 2 surface casting polyurethane lining cement liquid of permanent magnetism sheet 2, solid layer is become after this polyurethane lining cement liquid solidifies, this solid layer exactly for when rolling disc 1 rotates, fix 20 permanent magnetism sheets 2 relative to rolling disc 1 not shift position seize magnetic sheet layer 6 on both sides by the arms.
The rounded track distribution equably of whole permanent magnetism sheet 2, each permanent magnetism sheet 2 is fixed on diameter 9.0 centimetres of circular rail traces 5, and the distance namely between each permanent magnetism sheet 2, adjacent permanent magnet piece 2 identical to the distance at circle center, circular rail trace 5 place is identical.
The rounded track distribution equably of whole permanent magnetism sheet 2, each permanent magnetism sheet 2 is fixed on diameter 9.0 centimetres of circular rail traces 5, and the distance namely between each permanent magnetism sheet 2, adjacent permanent magnet piece 2 identical to the distance at circle center, circular rail trace 5 place is identical.
The mode that the magnetic polarity of the whole permanent magnetism sheets 2 one-tenth adjacent permanent magnet pieces 2 arranged in face of rolling disc is contrary arranges, i.e. on a face of rolling disc, all the magnetic polarity distribution mode of permanent magnetism sheet 2 is N pole, S pole, N pole, S pole, N pole, S pole ...
The side that rolling disc 1 has permanent magnetism sheet 2 is located at a Hall 3, Hall 3 is located at the position close to permanent magnetism sheet 2, namely Hall 3 is located in circular rail trace 5 scope of each permanent magnetism sheet 2 place, Hall 3 keeps the spacing distance of 0.3 centimetre with each permanent magnetism sheet 2 of rotary state, make each permanent magnetism sheet 2 of rotation when through Hall 3, Hall 3 can produce a corresponding square wave electric signal output.
Rolling disc 1 is provided with centre hole at this circular rail trace 5 center, whole permanent magnetism sheet 2 place, and centre hole is used on the pedal axis that is enclosed within morpet or runner rotating shaft.
Embodiment 2, high density many magnetic sheets well-distributed rotating disc type sensitive member
As Fig. 2,3, a face of the High-strength aluminum product rolling disc 1 of one piece of diameter 10.0 centimetres arranges 40 permanent magnetism sheets 2 of diameter 0.4-0.6 centimetre.The thickness of permanent magnetism sheet 2 is 0.2 millimeter, and the magnetic flow of permanent magnetism sheet 2 is 146---279 (BH) max/KJm
-3in some values, Hall 3 keeps the spacing distance of 0.2 centimetre with each permanent magnetism sheet 2 of rotary state, makes each permanent magnetism sheet 2 of rotation when through Hall 3, and Hall 3 can produce a corresponding square wave electric signal and export.The structure of other rolling disc 1, permanent magnetism sheet 2, Hall 3 is same as embodiment 1.
Embodiment 3, seize many magnetic sheets well-distributed rotating disc type sensitive member of magnetic sheet layer aluminium sheet on both sides by the arms
As Fig. 1,3, the plane in a face of diameter 10.0 centimetres of aluminium sheet rolling discs 1 is pasted with 20 permanent magnetism sheets 2.Having the rolling disc 1 of permanent magnetism sheet 2 surface and permanent magnetism sheet 2 surface to be also pasted with and to seize magnetic sheet layer 6 on both sides by the arms, permanent magnetism sheet 2 is seized on both sides by the arms to be fixed on rolling disc 1 and to seize on both sides by the arms between magnetic sheet layer 6.The thickness of permanent magnetism sheet 2 is 0.5 millimeter, and the magnetic flow of permanent magnetism sheet 2 is 146---279 (BH) max/KJm
-3in some values.Seize the aluminium sheet of magnetic sheet layer 6 with rolling disc 1 formed objects and thickness on both sides by the arms.Other is same as embodiment 1.
Claims (5)
1. more than magnetic sheet well-distributed rotating disc type sensitive member, comprise one piece of rolling disc (1) and many pieces of permanent magnetism sheets (2), the size of many pieces of permanent magnetism sheets (2) is identical, shape is identical, magnetic flow is identical, it is characterized in that: rolling disc (1) is pasted with many pieces of permanent magnetism sheets (2), the rounded track distribution equably of these many pieces of permanent magnetism sheets (2), namely every piece of permanent magnetism sheet (2) to circle center, circular rail trace (5) place identical, the adjacent two pieces of permanent magnetism sheets (2) of distance between distance identical; In certain one side of rolling disc (1), the magnetic polarity of adjacent permanent magnet piece (2) is contrary, and namely the magnetic polarity distribution mode of the upper whole permanent magnetism sheet (2) of certain one side of rolling disc (1) is N pole, S pole, N pole, S pole, N pole, S pole
Having the rolling disc of permanent magnetism sheet (2) (1) surface and permanent magnetism sheet (2) surface mount to seize magnetic sheet layer (6) on both sides by the arms, permanent magnetism sheet (2) is seized on both sides by the arms to be fixed on rolling disc (1) and to seize on both sides by the arms between magnetic sheet layer (6);
Also comprise a Hall (3), Hall (3) is positioned at certain one side of rolling disc (1), and Hall (3) is located at close to permanent magnetism sheet (2) and can experiences the position of permanent magnetism sheet (2) magnetic flow, has spacing between Hall (3) and permanent magnetism sheet (2); Hall (3) is Hall opposite magnetic polarities being produced to square wave output signal;
Seizing magnetic sheet layer (6) on both sides by the arms is at the rolling disc having permanent magnetism sheet (2) (1) surface and permanent magnetism sheet (2) surface casting lining cement liquid, becomes solid layer after this lining cement liquid solidifies.
2. many magnetic sheets well-distributed rotating disc type sensitive member according to claim 1, is characterized in that: the thickness of permanent magnetism sheet (2) is 0.2 ~ 0.5 millimeter.
3., according to the many magnetic sheet well-distributed rotating disc type sensitive member of claim 1 or 2 described in any one, it is characterized in that: Hall (3) is located at just to the position of the circular rail trace (5) of many pieces of permanent magnetism sheets (2).
4. many magnetic sheets well-distributed rotating disc type sensitive member according to claim 3, is characterized in that: rolling disc (1) is provided with centre hole in the circle scope of circular rail trace (5) place of many pieces of permanent magnetism sheets (2).
5. many magnetic sheets well-distributed rotating disc type sensitive member according to claim 4, is characterized in that: rolling disc (1) be the plastic flagstone of non-magnet_conductible material, aluminum board, copper material plate a certain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310309349.9A CN103381871B (en) | 2012-07-28 | 2013-07-23 | Many magnetic sheets well-distributed rotating disc type sensitive member |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102634591 | 2012-07-28 | ||
| CN2012102634591A CN102795294A (en) | 2012-07-28 | 2012-07-28 | Rotating disk type sensing element with uniform distribution of multiple magnetic blocks |
| CN201210263459.1 | 2012-07-28 | ||
| CN201310309349.9A CN103381871B (en) | 2012-07-28 | 2013-07-23 | Many magnetic sheets well-distributed rotating disc type sensitive member |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103381871A CN103381871A (en) | 2013-11-06 |
| CN103381871B true CN103381871B (en) | 2015-09-30 |
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Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102634591A Pending CN102795294A (en) | 2012-07-28 | 2012-07-28 | Rotating disk type sensing element with uniform distribution of multiple magnetic blocks |
| CN201320437966.2U Withdrawn - After Issue CN203581298U (en) | 2012-07-28 | 2013-07-23 | Rotary disc type sensing element with even distribution of magnetic sheets |
| CN201310309349.9A Expired - Fee Related CN103381871B (en) | 2012-07-28 | 2013-07-23 | Many magnetic sheets well-distributed rotating disc type sensitive member |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102634591A Pending CN102795294A (en) | 2012-07-28 | 2012-07-28 | Rotating disk type sensing element with uniform distribution of multiple magnetic blocks |
| CN201320437966.2U Withdrawn - After Issue CN203581298U (en) | 2012-07-28 | 2013-07-23 | Rotary disc type sensing element with even distribution of magnetic sheets |
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| CN (3) | CN102795294A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102795294A (en) * | 2012-07-28 | 2012-11-28 | 成都宽和科技有限责任公司 | Rotating disk type sensing element with uniform distribution of multiple magnetic blocks |
| CN103398810A (en) * | 2013-08-08 | 2013-11-20 | 上海电机学院 | Non-contact torque and power measuring device and method |
| CN103398811B (en) * | 2013-08-08 | 2015-07-08 | 上海电机学院 | Non-contact torque and power measuring device and method |
| CN108909924B (en) * | 2016-07-04 | 2019-12-24 | 永康市永泰工贸有限公司 | Electric scooter |
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|---|---|---|---|---|
| US5825178A (en) * | 1995-09-21 | 1998-10-20 | Robert Bosch Gmbh | Sensing device for determining an angular position of a steering wheel on a steering column in a vehicle |
| CN101707879A (en) * | 2007-06-06 | 2010-05-12 | 海卓-艾尔公司 | Angular position sensor |
| CN203581298U (en) * | 2012-07-28 | 2014-05-07 | 成都宽和科技有限责任公司 | Rotary disc type sensing element with even distribution of magnetic sheets |
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| US3917997A (en) * | 1974-09-20 | 1975-11-04 | Illinois Tool Works | Magnetic flux closure member for an angular velocity sensing device |
| US3970935A (en) * | 1975-02-18 | 1976-07-20 | Burroughs Corporation | Wide-range digital reluctance tachometer |
| EP0484716B1 (en) * | 1990-11-09 | 1999-01-13 | Siemens Aktiengesellschaft | Electromagnetic sensor for determining the rotational speed and/or direction of a rotor |
| AUPO899797A0 (en) * | 1997-09-05 | 1997-10-02 | Southern Refrigeration Group Pty Ltd | An electric motor |
| US6124710A (en) * | 1998-11-13 | 2000-09-26 | Cts Corporation | Rotary magnetic encoder using hall effect for detecting revolution of a shaft |
| US6469499B2 (en) * | 2001-02-06 | 2002-10-22 | Delphi Technologies, Inc. | Apparatus and method for low power position sensing systems |
| CN201173933Y (en) * | 2008-04-09 | 2008-12-31 | 长沙矿山研究院 | Non-contact type revolution speed transducer |
| CN201955184U (en) * | 2010-12-03 | 2011-08-31 | 保定市玮尔光电科技有限公司 | Torque sensor for petroleum logging wireless transmission |
| CN202847951U (en) * | 2012-07-28 | 2013-04-03 | 成都宽和科技有限责任公司 | Rotating disc type sensing element with multi-magnetic block evenly distributed |
-
2012
- 2012-07-28 CN CN2012102634591A patent/CN102795294A/en active Pending
-
2013
- 2013-07-23 CN CN201320437966.2U patent/CN203581298U/en not_active Withdrawn - After Issue
- 2013-07-23 CN CN201310309349.9A patent/CN103381871B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5825178A (en) * | 1995-09-21 | 1998-10-20 | Robert Bosch Gmbh | Sensing device for determining an angular position of a steering wheel on a steering column in a vehicle |
| CN101707879A (en) * | 2007-06-06 | 2010-05-12 | 海卓-艾尔公司 | Angular position sensor |
| CN203581298U (en) * | 2012-07-28 | 2014-05-07 | 成都宽和科技有限责任公司 | Rotary disc type sensing element with even distribution of magnetic sheets |
Also Published As
| Publication number | Publication date |
|---|---|
| CN203581298U (en) | 2014-05-07 |
| CN103381871A (en) | 2013-11-06 |
| CN102795294A (en) | 2012-11-28 |
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Effective date of registration: 20171122 Address after: No. 52, Xiao Zhong house, Nanping Road, tower peak Town, Lanshan County, Yongzhou, Hunan Patentee after: Hunan double tribe information consulting service limited liability company Address before: 610000, Sichuan District, Longquanyi City, Chengdu District Street, Jackie Chan Road, paragraph two, No. 888, Chengdu open area A10 (building) 3, No. 301 Co-patentee before: Huang Qiang Patentee before: Chengdu Kind Technology Co., Ltd. Co-patentee before: Gao Song Co-patentee before: Ouyang Yanxiong |
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