CN103381871A - Rotary disc type sensing element with evenly distributed multiple magnets - Google Patents
Rotary disc type sensing element with evenly distributed multiple magnets Download PDFInfo
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- CN103381871A CN103381871A CN2013103093499A CN201310309349A CN103381871A CN 103381871 A CN103381871 A CN 103381871A CN 2013103093499 A CN2013103093499 A CN 2013103093499A CN 201310309349 A CN201310309349 A CN 201310309349A CN 103381871 A CN103381871 A CN 103381871A
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Abstract
The invention discloses a rotary disc type sensing element with evenly distributed multiple magnets, belongs to the technical field of magnetic induction provided signals, and particularly relates to technology of providing control signals via multi-point magnetic induction on a rotating component. Multiple permanent magnets distributed annularly are adhered onto a rotary disc; on one surface of the rotary disc, magnetic polarities of two adjacent permanent magnets are opposite, that is, the distribution manner of magnetic polarities of all permanent magnets on one surface of the rotary disc is as follows: N pole, S pole, N pole, ...; a clamping magnet layer is adhered onto each of the surface, with the magnets, of the rotary disc, and the surfaces of the magnets; a Hall element is arranged in a position close to the permanent magnets. The rotary disc type sensing element has the advantage as follows: based on the distribution manner that the magnetic polarities of two adjacent permanent magnets are opposite, the Hall element can obtain square-wave signals, and the signals can be digitally processed conveniently.
Description
Technical field
The invention belongs to magnetic induction the technical field of signal is provided, particularly relate on rotatable parts, carry out the technology that multi-point magnetic induction provides control signal.
Background technology
The Chinese patent 201020295192.0 of Yebao Vehicle Material Industry's application " hooking pawl formula moment sensor " discloses a kind of morpet sensing device, sensing device comprises that magnetic part and elastic component coordinate, and experience the sensing device of moment.After period of service was long, the elasticity modulus variation of elastic component will cause the control effect of transducing signal and controlled motor to change, and the power-assisted effect becomes and need to mismatch with people's power-assisted.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, no touch detects to be pedaled power, speed and turns to, this device is established respectively magnetic patch on the inside and outside wheel disc of relative motion, on interior wheel disc, spring is arranged, use spring reset between inside and outside wheel disc, the electric signal of surveying the magnetic patch generation of relative motion on inside and outside wheel disc with two Halls on support represents to pedal power, speed and turns to.
Shortcoming (1) is not durable with elastic component: after period of service was long, the elasticity modulus variation of elastic component will cause the control effect of transducing signal and controlled motor to change, and the power-assisted effect becomes and need to mismatch with people's power-assisted, complex structure, and cost is high.
Shortcoming (2) sine wave output makes the magnetic patch group Edge Distance can not be less than 4 centimetres, generally take 5 centimetres as good, can establish magnetic patch group number very little and make, man-machine cooperation is undesirable: each magnetic patch group is identical, Hall output is that sinusoidal waveform is as control signal, as the control signal sinusoidal waveform, certain peak valley difference must be arranged, because the magnetic patch group of this patent needs certain-length to represent forward and reverse motion, be to establish at most 8 magnetic patch groups on the rolling disc circular trace of 20 centimetres at diameter, generally take 5 as good, Hall just can have the sine wave signal of controlling function.That is to say, this technical scheme of 01201843.0 patent is used for morpet, magnetic patch group limited amount only in 8, control signal very little, man-machine cooperation is undesirable.If but more than 8 magnetic patch groups, when people's treadmill was very fast, the signal graph of Hall output was close to a horizon, this signal is not controlled function, can not control electrical motor, when making it need power-assisted especially, loses assist function.
Shortcoming (3) signal blind zone reaches miter angle, really can not get power-assisted when needing power-assisted during startup: well-known, it is minimum in summit moment that the people steps on bicycle pedal, the zone that needs most power-assisted from leaving 10-45 degree angle, summit, but the angle between each magnetic patch group of this patent is 45 degree, leaves summit 10-45 degree angular zone neither one magnetic patch group at stretcher, also with regard to the neither one control signal, when consequently needing most power-assisted, but the motor of morpet really can not power-assisted.
In a word, except with the not durable complex structure again of elastic component, fit structure characteristics because of Hall and magnetic patch group, the rotating disk size diameter is in 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, the power-assisted demand with provide power-assisted not mate, cyclist's traveling comfort is poor; As increasing by force magnetic patch group quantity, its transducing signal loses again the 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 moving, fixed two rotating disks, inlay two permanent magnetic steels above Moving plate, inlay three Hall elements above price fixing, bicycle pedal circles, each Hall produces two pulses, and three Hall elements produce six pulses.Divide folding can get three characteristics, four shortcomings are as follows:
Characteristics (1) are for obtaining six impulse singlas, can only be each permanent magnetic steel same pole in one side: each Hall will produce two pulses, can only be 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, another is the South Pole, and 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 has put down in writing.In order to increase pulse count, improve and control effect, can only be that each permanent magnetic steel same pole is in one side.
Characteristics (2) permanent magnetic steel is for expression pedal fixed position, three Halls represent the pedal travel position: because pedal and Moving plate are to synchronize rotation, so a permanent magnetic steel is fixed respectively in two positions on the Moving plate corresponding with two pedals, where some pedals turn, and where corresponding permanent magnetic steel also turns; But only turn in the position that Hall is arranged, could send control signal by Hall, the motor of commander's morpet produces the power-assisted that needs and rotates.
The position of characteristics (3) middle different period pedal travels because Hall can not represent to circle, just can not be only with a Hall: the different periods of pedal in circling, the power-assisted demand there is very big difference, embody the variation of this power-assisted demand, this patent is located at respectively 180 with three Halls and spends the angle with three interior positions, two permanent magnetic steels are located at respectively two pedal positions, pedal turns in the position that Hall is arranged, and this Hall represents that with regard to output signal pedal has arrived the position of this Huo Yuan.But there is again following shortcoming with a plurality of Halls.
These characteristics as the morpet sensor have three shortcomings:
Shortcoming (1) represents respectively the fixed position of two pedals with two permanent magnetic steels that there is no an otherness, just can only represent with a plurality of Halls the turned position of pedal: two permanent magnetic steels do not have otherness, advantage is can be regardless of the fixed position that represents respectively two pedals of left and right pin, make its left and right human hair combing waste give birth to the power-assisted demand, can produce identical motor power-assisted effect; But shortcoming is permanent magnetic steel itself just can not represent the turned position of pedal, and can only be located at the turned position that different angle positions represents pedal with a plurality of Halls, thus can not be only with a Hall, and must use a plurality of Halls.
Shortcoming (2) can not be only with a Hall, and three Halls must cause three control signals that original segmentation error is arranged, make the distortion of power-assisted demand model, naturally produce power-assisted output inconsistent with the power-assisted demand: no matter morpet is one or two motor, its transducing signal of controlling motor can only just can reach the purpose of controlling motor with a transducing signal input electric machine controller; And this patent is controlled motors with three Halls, must merge into one to three control signals of three Halls and could input electric machine controller after 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 Halls be different voltages, cause motor to produce different power-assisted output, power-assisted output is inconsistent with the power-assisted demand; In like manner during identical power-assisted demand, the output of different Halls may be identical voltage again, cause motor to produce the output of same power-assisted, also produce power-assisted output and the inconsistent problem of power-assisted demand.
shortcoming (3) merges control signal and easily produces signal drift, merging control signal and electric machine controller are not mated, 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 of identical power-assisted demand generation will produce the signal drift of segmenting, merge control signal as a whole signal distortion that produces, it is the distortion of power-assisted demand model, any one that causes that electric machine controller selects three control signals all can produce power-assisted output and the inconsistent problem of power-assisted demand as benchmark.
Shortcoming sensing site can not arbitrarily increase, the sensing site very little, the motor operation is just not steady, make people by bike feel very uncomfortable: owing to shortcoming (1) and shortcoming (2) being arranged all because Hall quantity causes greater than one, clearly Hall quantity is measured more and more, and shortcoming (1) and shortcoming (2) performance are more serious.So the morpet that this patent provides can only be to make people by bike feel the morpet that traveling comfort is very bad.
Shortcoming (5) signal blind zone reaches 42 and spends the angle, really can not get power-assisted when needing power-assisted during startup: well-known, it is minimum in summit moment that the people steps on bicycle pedal, the zone that needs most power-assisted from leaving 10-45 degree angle, summit, but the angle between each Hall of this patent is the 42.5-43.5 degree, leaves summit 10-42 degree angular zone neither one Hall at stretcher, also with regard to the neither one control signal, when consequently needing most power-assisted, but the motor of morpet really can not power-assisted.
In a word, this patent is to control the technical scheme of assistant mode with a plurality of Halls, because can only represent with a plurality of Halls the turned position of pedal, a plurality of control signals of a plurality of Halls must have original error, it merges control signal and easily produces again signal drift, 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, the quantity of having placed restrictions on you, the Hall small number and to produce the motor operation just not steady, make people by bike feel very uncomfortable, and can not get power-assisted when starting.Make it want the power-assisted demand model undistorted, and want motor to operate steadily and always attend to one thing and lose sight of another on these two problems, can not get both.
International Patent Application WO/099/13558AI discloses the sensor that is used for controlling on electrical motor electrical motor, this sensor is that depression is set on rolling disc, permanent magnets is entrapped in the depression of rolling disc, this technique is bored depression on rolling disc, can only be by hand in the depression that is entrapped in rolling disc of one piece one piece of many pieces of permanent magnets, consumption very consuming time is artificial, and depression and the essential size shape no-float of permanent magnets, and this point is difficult to accomplish.Because caved in greater than permanent magnets, rolling disc is when rotating, and permanent magnets is vibrated in depression, very fragile permanent magnets; Depression is the flush fit permanent magnets, is difficult to again permanent magnets is entrapped in the depression of rolling disc.
Summary of the invention
The purpose of this invention is to provide the sensitive member that only obtains speed and acceleration signal with each permanent magnetism sheet on a Hall and rolling disc, a kind of a plurality of permanent magnetism sheets to be arranged that technique is simple, the permanent magnetism sheet can not be shifted and sensing model is stable, but be a kind of in induction region, can increase permanent magnetism sheet quantity as far as possible, utilize to greatest extent the rolling disc displacement information, the sensitive member that output information is many.Use is measured moment, the morpet sensor sensitive member that motor operates steadily without elastic component and other machinery on morpet.
Design of the present invention is: the 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 the magnetic sheet layer, and during turn disc, the permanent magnetism sheet remains on the original position of rolling disc, can not move with respect to rolling disc, and sensing model is stable; But in a Hall receptive field, carry out magnetic polarity with identical a plurality of permanent magnetism sheets on a rolling disc and change, the signal that Hall is produced is square wave, controls with better function, more.For morpet, the quantity of information of expressing the motion of foot state is more.
Structure of the present invention is:
Many magnetic sheets well-distributed rotating disc type sensitive member, comprise a rolling disc 1 and many pieces of permanent magnetism sheets 2, many pieces of permanent magnetism sheets 2 big or small identical, shape is identical, magnetic flow is identical, it is characterized in that: be pasted with many pieces of permanent magnetism sheets 2 on rolling disc 1, these many pieces of permanent magnetism sheets 2 rounded track equably distribute, and namely every piece of permanent magnetism sheet 2 is identical to the distance between identical, the adjacent two pieces of permanent magnetism sheets 2 of distance at circular rail trace 5 circle centers, place; In certain one side of rolling disc 1, the magnetic polarity of adjacent permanent magnet piece 2 is opposite, and namely simultaneously to go up the magnetic polarity distribution mode of whole permanent magnetism sheets 2 be the N utmost point, the S utmost point, the N utmost point, the S utmost point, the N utmost point, the S utmost point for certain of rolling disc 1
Be pasted with on rolling disc 1 surface that permanent magnetism sheet 2 is arranged and permanent magnetism sheet 2 surfaces and seize magnetic sheet layer 6 on both sides by the arms, permanent magnetism sheet 2 quilts are 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 near permanent magnetism sheet 2 also can experience the position of permanent magnetism sheet 2 magnetic flow, between Hall 3 and permanent magnetism sheet 2, spacing is arranged; Hall 3 is opposite magnetic polarities to be produced the Hall of square wave output signal.
Prior art is all that depression or hole are set on rolling disc, permanent magnets is entrapped in the depression or hole of rolling disc, this technique will be bored depression or hole on rolling disc, can only be by hand in the depression or hole that are entrapped in rolling disc of one piece one piece of many pieces of permanent magnets, consumption very consuming time is artificial, and depression or hole and the essential size shape no-float of permanent magnets, this point is difficult to accomplish.Because depression or hole are crossed greater than permanent magnets, during rolling disc, permanent magnets is vibrated in depression or hole, very fragile permanent magnets; Depression or hole are the flush fit permanent magnets, are difficult to again permanent magnets is entrapped in the depression or hole of rolling disc.Be to solve the problem of prior art, the present invention is arranged on permanent magnetism sheet 2 on rolling disc 1 with the method for stickup, is mainly can greatly reduce permanent magnetism sheet 2 is fixed on technique on rolling disc 1.For preventing the solid problem that is pasted not strongly, the present invention is pasted with on rolling disc 1 surface that permanent magnetism sheet 2 is arranged and permanent magnetism sheet 2 surfaces and seizes 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 rotation of rolling disc 1 can not make 2 displacements of permanent magnetism sheet, guarantee 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 stable.Pasting one, to seize magnetic sheet layer 6 on both sides by the arms more more convenient in the depression that is entrapped in rolling disc 1 of one piece one piece of piece permanent magnets or hole manying, simply, can not damage permanent magnet by hand than prior art.
In a word, the present invention is at the process aspect of making sensitive member, and the present invention can be located at permanent magnetism sheet 2 on rolling disc 1 with the method for pasting with seizing magnetic sheet layer 6 structure on both sides by the arms as technical guarantee, thereby has advantages of that making is simple, convenient reducing costs; Do not have prior art the sort of when rolling disc 1 rotates, permanent magnetism sheet 2 damages the problem of permanent magnetism sheet 2 with rolling disc 1 collision, 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.
A plurality of permanent magnetism sheets 2 are in annular arrangement 6 scopes, the purpose that becomes annular arrangement to distribute is only to experience the state of kinematic motion of whole permanent magnetism sheets 2 on rolling disc with a Hall 3, namely experience movement position and the speed of whole permanent magnetism sheets 2 on rolling disc, and the variation of speed, or title acceleration/accel, this Hall 3 just can be expressed the state of kinematic motion of permanent magnetism sheet 2 and output electrical signals with a continuous electric signal, because it is on rolling disc 1 that whole permanent magnetism sheet 2 is separately fixed at rolling disc, the continuous electric signal of Hall 3 generations just can be expressed the state of kinematic motion of rolling disc again.If this continuous electric signal is used for controlling other object, this continuous electric signal is exactly control signal.If be used for controlling the motor of 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 need what power-assisted signal of power-assisted, the function that converts is exactly the power-assisted demand model, or claims the power-assisted model.
The magnetic polarity of adjacent permanent magnet piece 2 is very important technical characterictic on the contrary, all the magnetic polarity distribution mode of permanent magnetism sheet 2 is the N utmost point, the S utmost point, the N utmost point, the S utmost point, the N utmost point, the S utmost point ... make the Hall 3 high and low alternate square-wave signals of output, because the rolling disc that stops as limited size, rotating the accurate variable signal that will obtain in a week as much as possible, should be to select square wave certainly.The time that the peak-to-valley value of square-wave signal changes is short, can within the regular hour, produce the signal of controlling meaning that has as much as possible.The structure generation square wave that the magnetic polarity of adjacent permanent magnet piece 2 is opposite, and the identical structure generation sinusoidal waveform of the magnetic polarity of adjacent permanent magnet piece 2, during especially for morpet, generally placing restrictions at diameter as the rolling disc of sensing element is 10-15 centimetre, to obtain to control the signal of function in this limit scope, rotate a week, produce square wave than producing the available pulse number of sinusoidal waveform and many 7-9 doubly.Nature, the opposite structure of the magnetic polarity of adjacent permanent magnet piece 2 to the control effect of morpet more, the people coordinates with car better, the rider people feels more comfortable.
The thickness of permanent magnetism sheet 2 is 0.2 ~ 0.5 millimeter.As long as selecting magnetic flow is 146---279 (BH) max/KJm
-3 Permanent magnetism sheet 2, the thickness of permanent magnetism sheet 2 is 0.2 ~ 0.5 millimeter just can guarantee that Hall 3 can normally experience the magnetic field of permanent magnetism sheet 2, makes Hall 3 output electrical signals.Experiment showed, that the magnetic flow when permanent magnetism sheet 2 is 146---279 (BH) max/KJm
-3The time, the thickness of permanent magnetism sheet 2 is 0.2 ~ 0.5 millimeter, Hall 3 can normally be experienced magnetic field and the output electrical signals of permanent magnetism sheet 2.The thickness of selecting permanent magnetism sheet 2 is 0.2 ~ 0.5 millimeter, and purpose is the weight that alleviates permanent magnet, because alleviate the weight of permanent magnet, in the time of can making 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 stable.
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 and rolling disc 1 compress the use of permanent magnetism sheet 2.
Seizing magnetic sheet layer 6 on both sides by the arms is at rolling disc 1 surface and the permanent magnetism sheet 2 surface casting lining cement liquid that permanent magnetism sheet 2 is arranged, and becomes solid layer after this lining cement liquid solidifies.Be cast in rolling disc 1 surface and permanent magnetism sheet 2 surfaces with lining cement liquid, become fixedly permanent magnetism sheet 2 techniques of seizing magnetic sheet layer 6 on both sides by the arms after solidifying than fixedly the technique of permanent magnetism sheet 2 is simpler with financial aluminium sheet or sheet plastic, and fixedly permanent magnetism sheet 2 the effect of shift position is also not better, sensing model is more stable.
The weight that alleviates permanent magnetism sheet 2 has been arranged, compressed and seize permanent magnetism sheet 2, lining cement liquid casting solidification on both sides by the arms and after cementing the technology of permanent magnetism sheet 2, paste the problem that many pieces of permanent magnetism sheets 2 just do not have permanent magnetism sheet 2 displacement when rolling disc 1 rotates on rolling disc 1, sensing model is stable.Do not need with the prior art of complex process, permanent magnet to be entrapped in the depression or hole of rolling disc.
Advantage of the present invention: simple in structure, cost is low, the permanent magnetism sheet quantity on the permanent magnetism loop is not placed restrictions on, the impulse singla of outputting standard, there is no signal blind zone, only just total movement state, the output signal of energy perfect representation Moving plate can not drift about in distortion with one group of output signal of a Hall, be used for morpet, make power-assisted output can highly coordinate with the power-assisted demand and the cyclist is felt well.
［ 1 ］ technique of stickup permanent magnetism sheet is simple: the technique of pasting many pieces of permanent magnetism sheets on rolling disc is simple.Prior art is all that depression or hole are set on rolling disc, permanent magnets is entrapped in the depression or hole of rolling disc, this technique will be bored depression or hole on rolling disc, can only be by hand in the depression or hole that are entrapped in rolling disc of one piece one piece of many pieces of permanent magnets, consumption very consuming time is artificial, and depression or hole and the essential size shape no-float of permanent magnets, this point is difficult to accomplish.Because depression or hole are crossed greater than permanent magnets, during rolling disc, permanent magnets is vibrated in depression or hole, very fragile permanent magnets; Depression or hole are the flush fit permanent magnets, are difficult to again permanent magnets is entrapped in the depression or hole of rolling disc.
［ 2 ］ the permanent magnetism sheet of pasting can the shift position: the weight that alleviates the permanent magnetism sheet has been arranged, compressed and seize permanent magnetism sheet, lining cement liquid casting solidification on both sides by the arms and after cementing the technology of permanent magnetism sheet, paste many pieces of permanent magnetism sheets on rolling disc and just do not have the permanent magnetism sheet when turn disc, produce the problem of displacement with respect to rolling disc, the permanent magnetism sheet is synchronized with the movement with rolling disc all the time, and sensing model is stable.Do not need with the prior art of complex process, permanent magnet to be entrapped in the depression or hole of rolling disc.
Prior art embeds permanent magnets in rolling disc depression or hole, to stick on aspect the hall sensing signal difference at rolling disc not obvious with the present invention.But at the process aspect of making sensitive member, the present invention can be located at the permanent magnetism sheet on rolling disc with the method for pasting with seizing magnetic sheet layer structure on both sides by the arms as technical guarantee, thereby has advantages of that making is simple, convenient reducing costs; Can be when turn disc, permanent magnetism sheet and rolling disc collision and damage the permanent magnetism sheet and have the durability advantage, visible the present invention has obvious technological advance than prior art.
［ 3 ］ simple in structure, without elastic component, machinery-free fault: rotate output signal with a plurality of permanent magnetism sheets of Hall impression, the speed that provides with Chinese patent 01201843.0 can be calculated the principle of moment, available multiple math modeling is calculated the moment parameter of morpet, be used for controlling the motor of morpet, realize power-assisted.Without elastic component, simple in structure, cost lower than with elastic component and mechanically stressed sensor.After having avoided long-time use, each mechanical part distortion, machinery-free fault, the not good problem of cooperation.
［ 4 ］ magnetic polarity is opposite, the output square-wave signal, has accurate control function,: because the magnetic polarity of adjacent two pieces of permanent magnetism sheets is opposite, and Hall is selected the Hall that opposite magnetic polarities is produced the square wave output signal, adjacent two pieces of permanent magnetism sheets no matter spacing what, even very close to each other between adjacent two pieces of permanent magnetism sheets, Hall can be exported square-wave signal too.As being used for morpet, the motor of controlling morpet with the output signal of square wave is better than using sinusoidal waveform, because the rectangle wave energy is accomplished signal point at any time, the signal implication of expression movement position and speed is accurate, but thereby the movement position of Precise Representation booster bicycle pedal and speed, in order 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 opposite, permanent magnetism sheet quantity is not placed restrictions on, can increase the sensing point position: because magnetic polarity is opposite as far as possible, the output square-wave signal, even adjacent permanent magnet piece gapless, the signal of its output has remained number, differentiable square-wave signal, still has the control function, that is to say to export the unchanged linear signal of not controlling function.As being used for morpet, owing to being placed restrictions on the rolling disc diameter of pedal linkage, just can be on the rolling disc of prescribed level, increase as far as possible permanent magnetism sheet quantity, as far as possible increase the sensing point position, represent bicycle pedal movement position and speed, the Precise Representation state of kinematic motion with as much as possible transducing signal.
［ 6 ］ magnetic polarity of adjacent permanent magnet piece is opposite, can arrange that the permanent magnetism sheet is many, the sensing point position is many, state of kinematic motion to rolling disc represents accurately: to being used for morpet, fixedly the rolling disc size of permanent magnetism sheet is strictly placed restrictions on, general rolling disc diameter can only be in 10-15 centimetre, in order to make Hall that the magnetic pole signal that obtains the permanent magnetism sheet under the condition of spacing arranged, the diameter of its permanent magnetism sheet is at least Ф 0.6-0.8 centimetre, and the rolling disc of diameter 10-15 centimetre peripheral 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 the motor that 35-73 signal is used for controlling morpet.But if the identical prior art of adjacent permanent magnet piece magnetic polarity, adjacent permanent magnet piece on diameter 10-15 centimetre rolling disc, can only arrange at most 5-8 permanent magnetism sheet ［ 10-1*3.14/5.8=5 by 5 centimetres of spacings; 15-1*3.14/5.6=8.As seen, the art of this patent can arrange doubly ［ 35/5=6 of permanent magnetism sheet 7-9 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 has increased 7-9 turn disc site signal doubly than prior art.Electric machine control accuracy rate to morpet has improved 7-9 doubly naturally, make the cyclist also improve 7-9 doubly to power-assisted demand accuracy rate, car and people's cooperate degree improves greatly, and cyclist's comfort increases greatly, is no longer boosted vehicle the sort of one fast one slow uncomfortable sensation of prior art.The present invention asks someone according to the experience of reality, when roughly 15 permanent magnetism sheets being set uniformly on rolling disc, substantially having eliminated prior art and has only established 5-8 permanent magnetism sheet and make boosted vehicle the sort of one fast one slow uncomfortable sensation; When roughly 20 permanent magnetism sheets being set uniformly on rolling disc, car coordinates oneself can satisfy human needs with the people's, and the sensation of riding boosted vehicle is very comfortable.
［ 7 ］ there is no signal blind zone, the power-assisted that power-assisted demand whenever all can obtain to be complementary: 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 the 5-10 degree.Be used for morpet, when starting or move, stretcher is spent in the zone from leaving 35 of 10-45 degree angle, summit, there be 4-7 permanent magnetism sheet in the position of leaving degree angle, summit 10, a signal just to be arranged, the exportable 4-7 of Hall control signal reacts the power-assisted demand, can realize any position, have power-assisted just can obtain the excellent technique effect of corresponding power-assisted any time, make car and people's no-float, it is laborsaving comfortable again that the cyclist feels.
［ 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 in full accord, control signal and people's demand is in full accord: a plurality of permanent magnetism sheets are fixed on rolling disc, the permanent magnetism sheet is synchronizeed with rolling disc and is rotated, with a whole permanent magnetism sheet motor message of Hall impression, the state of kinematic motion of the control signal of Hall output and rolling disc is in full accord, just in full accord with people's demand, control signal does not have original segmentation error and signal drift problem yet.Even the hall sensing parameter changes, be also whole control signal parallel, as long as it is wider to receive the range of receiving of electric machine controller of Hall control signal, the control effect of the Hall control signal that has changed becomes systematicness to change.As being used for morpet, the power-assisted demand model can distortion, and power-assisted output and power-assisted demand still keep the matching relationship of original model, and the systematicness that the cyclist is easy to grasp this power-assisted ability changes.
Description of drawings
Fig. 1 is the sensitive member structural representation that on rolling disc, even a plurality of N-S of distribution replace the permanent magnetism sheet;
Fig. 2 is the sensitive member structural representation that on rolling disc, the even a plurality of N-S of distribution of high density replace the permanent magnetism sheet;
Fig. 3 is cross-sectional view of the present invention.
In figure, 1 is rolling disc, the 2nd, permanent magnetism sheet, the 3rd, and Hall, the 5th, circular rail trace, the 6th is seized the magnetic sheet layer on both sides by the arms.
The specific embodiment
As Fig. 1,3, be pasted with 20 permanent magnetism sheets 2 on the plane with a face of 10.0 centimetres of rolling discs 1 of highstrenghtpiston's injection molded diameter.Also be pasted with on rolling disc 1 surface that permanent magnetism sheet 2 is arranged and permanent magnetism sheet 2 surfaces and seize magnetic sheet layer 6 on both sides by the arms, permanent magnetism sheet 2 quilts are 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 rolling disc 1 surface and permanent magnetism sheet 2 surface casting polyurethane lining cement liquid that permanent magnetism sheet 2 is being arranged, after solidifying, this polyurethane lining cement liquid becomes solid layer, this solid layer is exactly to be used for when rolling disc 1 rotates, fix 20 permanent magnetism sheets 2 with respect to rolling disc 1 not the shift position seize magnetic sheet layer 6 on both sides by the arms.
All permanent magnetism sheets 2 equably rounded track distribute, each permanent magnetism sheet 2 is fixed on 9.0 centimetres of circular rail traces 5 of diameter, namely the distance between each permanent magnetism sheet 2, adjacent permanent magnet piece 2 identical to the distance at circular rail trace 5 circle centers, places is identical.
All permanent magnetism sheets 2 equably rounded track distribute, each permanent magnetism sheet 2 is fixed on 9.0 centimetres of circular rail traces 5 of diameter, namely the distance between each permanent magnetism sheet 2, adjacent permanent magnet piece 2 identical to the distance at circular rail trace 5 circle centers, places is identical.
The opposite mode of magnetic polarity at 2 one-tenth adjacent permanent magnet pieces of whole permanent magnetism sheets 2 of a face setting of rolling disc is arranged, namely on rolling disc face all the magnetic polarity distribution mode of permanent magnetism sheets 2 be the N utmost point, the S utmost point, the N utmost point, the S utmost point, the N utmost point, the S utmost point ...
Be located at a Hall 3 side that rolling disc 1 has permanent magnetism sheet 2, Hall 3 is located at the position near permanent magnetism sheet 2, be that Hall 3 is located in each permanent magnetism sheet 2 place circular rail trace 5 scope, 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 through Hall 3 time, Hall 3 can produce the square wave electric signal output of a correspondence.
A face as the high strength aluminium rolling disc 1 of 10.0 centimetres of Fig. 2,3, diameters 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 through Hall 3 time, Hall 3 can produce the square wave electric signal output of a correspondence.The structure of other rolling disc 1, permanent magnetism sheet 2, Hall 3 is same as embodiment 1.
As Fig. 1,3, be pasted with 20 permanent magnetism sheets 2 on the plane of a face of 10.0 centimetres of aluminium sheet rolling discs 1 of diameter.Also be pasted with on rolling disc 1 surface that permanent magnetism sheet 2 is arranged and permanent magnetism sheet 2 surfaces and seize magnetic sheet layer 6 on both sides by the arms, permanent magnetism sheet 2 quilts are 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 use and rolling disc 1 formed objects and thickness on both sides by the arms.Other is same as embodiment 1.
Claims (7)
1. many magnetic sheets well-distributed rotating disc type sensitive member, comprise a rolling disc (1) and many pieces of permanent magnetism sheets (2), many pieces of permanent magnetism sheets (2) big or small identical, shape is identical, magnetic flow is identical, it is characterized in that: be pasted with many pieces of permanent magnetism sheets (2) on rolling disc (1), these many pieces of permanent magnetism sheets (2) rounded track equably distribute, and namely every piece of permanent magnetism sheet (2) is identical to the distance between identical, the adjacent two pieces of permanent magnetism sheets of distance (2) at circle center, circular rail trace (5) place; In certain one side of rolling disc (1), the magnetic polarity of adjacent permanent magnet piece (2) is opposite, and namely simultaneously to go up the magnetic polarity distribution mode of whole permanent magnetism sheets (2) be the N utmost point, the S utmost point, the N utmost point, the S utmost point, the N utmost point, the S utmost point for certain of rolling disc (1)
Be pasted with on the rolling disc that permanent magnetism sheet (2) are arranged (1) surface and permanent magnetism sheet (2) surface and seize magnetic sheet layer (6) on both sides by the arms, permanent magnetism sheet (2) quilt 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 near permanent magnetism sheet (2) also can experience the position of permanent magnetism sheet (2) magnetic flow, between Hall (3) and permanent magnetism sheet (2), spacing is arranged; Hall (3) is opposite magnetic polarities to be produced the Hall of square wave output signal.
2. many magnetic sheets well-distributed rotating disc type sensitive member according to claim 1, it is characterized in that: the thickness of permanent magnetism sheet (2) is 0.2 ~ 0.5 millimeter.
3. many magnetic sheets well-distributed rotating disc type sensitive member according to claim 2 is characterized in that: seize a certain of the financial aluminium sheet of magnetic sheet layer (6) or sheet plastic on both sides by the arms.
4. many magnetic sheets well-distributed rotating disc type sensitive member according to claim 2, it is characterized in that: seizing magnetic sheet layer (6) on both sides by the arms is at the rolling disc that permanent magnetism sheet (2) are arranged (1) surface and permanent magnetism sheet (2) surface casting lining cement liquid, becomes solid layer after this lining cement liquid solidifies.
5. according to claim 1 and 2 or 3 or 4 any one described many magnetic sheets well-distributed rotating disc type sensitive member, it is characterized in that: Hall (3) is located at over against the position of the circular rail trace (5) of many pieces of permanent magnetism sheets (2).
6. many magnetic sheets well-distributed rotating disc type sensitive member according to claim 5 is characterized in that: rolling disc (1) is provided with centre hole in the round scope in circular rail trace (5) place of many pieces of permanent magnetism sheets (2).
7. many magnetic sheets well-distributed rotating disc type sensitive member according to claim 6 is characterized in that: rolling disc (1) is plastic flagstone, aluminum board, copper material plate a certain of non-magnet_conductible material.
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 |
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| CN103381871A true CN103381871A (en) | 2013-11-06 |
| CN103381871B CN103381871B (en) | 2015-09-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| 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 |
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| 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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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106043569A (en) * | 2016-07-04 | 2016-10-26 | 胡玥 | Electric scooter |
Families Citing this family (3)
| 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 |
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 |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106043569A (en) * | 2016-07-04 | 2016-10-26 | 胡玥 | Electric scooter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN203581298U (en) | 2014-05-07 |
| CN103381871B (en) | 2015-09-30 |
| 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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