CN202794212U - Rotating disk type sensing element with a plurality of position-adjustable magnetic patches - Google Patents
Rotating disk type sensing element with a plurality of position-adjustable magnetic patches Download PDFInfo
- Publication number
- CN202794212U CN202794212U CN 201220367986 CN201220367986U CN202794212U CN 202794212 U CN202794212 U CN 202794212U CN 201220367986 CN201220367986 CN 201220367986 CN 201220367986 U CN201220367986 U CN 201220367986U CN 202794212 U CN202794212 U CN 202794212U
- Authority
- CN
- China
- Prior art keywords
- permanent magnets
- hall
- rolling disc
- bar hole
- sensing element
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
Images
Abstract
The utility model relates to a rotating disk type sensing element with a plurality of position-adjustable magnetic patches, which belongs to the field of a magnetic induction signal technology and specially belongs to a technology wherein control signals are provided through multi-point magnetic induction. A rotating disk is fixedly provided with a plurality of permanent magnetic patches distributed in an annular shape, the intervals among the permanent magnetic patches are adjustable, at one side of the rotating disk, the magnetic polarities of two adjacent permanent magnetic patches are opposite, which means that the magnetic polarities of all permanent magnetic patches are arranged in the mode as following: N pole, S pole, N pole ..., and a Hall element is arranged near to the permanent magnetic patches. The utility model provides the advantages as following: the magnetic polarities of adjacent permanent magnetic patches are oppositely distributed, the Hall element obtains a rectangular wave signal, which is convenient for digital process to the signal, the intervals of permanent magnetic patches are adjusted, thereby the rectangular wave signal can express the position of a permanent magnetic patch on the rotating disk, and the purposes of different rectangular waves are determined.
Description
Technical field
The utility model 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.
Background technology
The Chinese patent 201020295192.0 " colluding pawl formula moment sensor " of Yebao Vehicle Material Industry's application discloses a kind of moped sensing device, sensing device comprises that magnetic part and elastic component cooperate, and experience the sensing device of moment.After service time was long, the elasticity coefficient 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, contactless detection is pedaled power, speed and is turned to, this device is established respectively magnetic sheet on the inside and outside wheel disc of relative motion, on the interior wheel disc spring is arranged, use spring reset between the inside and outside wheel disc, survey electric signal that the magnetic sheet of relative motion on the inside and outside wheel disc produces with two Halls on the support and represent to pedal power, speed and turn to.
Shortcoming (1) is not durable with elastic component: after service time was long, the elasticity coefficient 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.
Each magnetic sheet group of shortcoming (2) is identical and the magnetic pole set-up mode is all identical, and can not represent the separately position of different magnetic sheet groups, can not express the special power-assisted demand of diverse location: from Fig. 3 of 01201843.0 patent, 4,5,6 and the record explanation of the 2nd section of Instructions Page 2, each magnetic sheet group (comprises a magnetic sheet 4, a magnetic sheet 5, a magnetic sheet 6) magnetic pole set-up mode is all identical, namely only be simply from being provided with again identical magnetic sheet group at interior diverse location of taking turns, the separately position that can not represent different magnetic sheet groups, the motion state that can not represent ad-hoc location, and the people is by bike the time, pedal and each position corresponding with pedal are in motion state, own special power-assisted demand is arranged, but the identical structure of this each magnetic sheet group of this patent can not give expression to the special power-assisted demand of each diverse location on the pedal.
Each site signal indifference of shortcoming (3) makes man-machine mismatching: each magnetic sheet group is the same, then each magnetic sheet group can not represent this position of magnetic sheet group on interior the wheel, the signal that Hall is exported can not represent the position of pedal and other magnetic sheet group, the signal that is Hall output can not represent that different foot positions are to the demand of power-assisted, cause the demand of power-assisted and provide the time of power-assisted to mismatch, namely man-machine cooperation is undesirable.
The shortcoming sine wave output makes the magnetic sheet group Edge Distance can not be less than 4 centimetres, generally take 5 centimetres as good, can establish magnetic sheet group number very little and make, man-machine cooperation is undesirable: each magnetic sheet group is identical, then Hall output is sinusoidal wave as control signal, as the control signal sine wave certain peak valley difference must be arranged, because the magnetic sheet group of this patent needs certain-length to represent forward and reverse motion, be to establish at most 8 magnetic sheet groups on 20 centimetres the rolling disc circular trace at diameter, generally take 5 as good, Hall just can have the sine wave signal of control function.That is to say that this technical scheme of 01201843.0 patent is used for moped, magnetic sheet group limited amount is ended in 8, control signal very little, man-machine cooperation is undesirable.If but more than 8 magnetic sheet groups, when people's treadmill was very fast, the signal graph of Hall output was close to a horizontal line, this signal is not controlled function, can not control motor, when making it need power-assisted especially, loses assist function.
Shortcoming (5) 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 sheet group of this patent is 45 degree, leaves summit 10-45 degree angular zone neither one magnetic sheet group at pedal, also with regard to the neither one control signal, when consequently needing most power-assisted, but the motor of moped really can not power-assisted.
In a word, except with the not durable again complex structure of elastic component, fit structure characteristics because of Hall and magnetic sheet group, the rotating disk size diameter is in 20 centimetres, and having placed restrictions on magnetic sheet group quantity is 8 groups, and magnetic sheet 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 comfortableness is poor; As increasing by force magnetic sheet 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 the Moving plate, inlay three Hall elements above the price fixing, bicycle pedal circles, each Hall produces two pulses, and then three Hall elements produce six pulses.Divide folding can get three characteristics, four shortcomings are as follows:
Characteristics (1) are for obtaining six pulse signals, can only be each permanent magnetic steel same pole in one side: each Hall will produce two pulses, then 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 all be the South Pole.If at the same face of Moving plate, a permanent magnetic steel is the arctic, another is the South Pole, and 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 has put down in writing.In order to increase umber of pulse, improve the control effect, can only be that each permanent magnetic steel same pole is in one side.
Characteristics (2) permanent magnetic steel is used for expression pedal fixed position, three Halls represent the pedal travel position: because pedal and Moving plate are synchronous rotations, so a permanent magnetic steel is fixed respectively in two positions on the Moving plate corresponding with two pedals, where some pedals turn, and then 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 moped 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, then 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 degree angles with three interior positions with three Halls, 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 moped sensor have three shortcomings:
Shortcoming (1) represents respectively the fixed position of two pedals with two permanent magnetic steels that do not have an otherness, the turned position that just can only represent with a plurality of Halls 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 sides pin, make its left and right sides 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 it is inconsistent with the power-assisted demand to produce power-assisted output: no matter moped is one or two motor, the transducing signal of its control motor can only just can reach with a transducing signal input electric machine controller purpose of control motor; And this patent is with three Halls control motors, then 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 owing to after growing variation of ambient temperature, service time, 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: because variation of ambient temperature, after service time is long, the parameter sensing of three Halls may be widely different, three control signal tie points of three Halls must change, then the merging control signal of identical power-assisted demand generation will produce the signal drift of segmenting, merge control signal as a whole distorted signals that produces, be 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 have shortcoming (1) and shortcoming (2) all to cause greater than one because of Hall quantity, clearly Hall quantity is measured more and more, and shortcoming (1) and shortcoming (2) performance are more serious.So the moped that this patent provides can only be to make people by bike feel the moped that comfortableness is very bad.
Shortcoming (5) signal blind zone reaches 42 degree angles, 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 pedal, also with regard to the neither one control signal, when consequently needing most power-assisted, but the motor of moped really can not power-assisted.
In a word, this patent is the technical scheme with a plurality of Hall control assistant modes, 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 initial 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.
Summary of the invention
The purpose of this utility model provides the sensing element that only obtains speed and acceleration signal with each permanent magnets on a Hall and the rolling disc, but be a kind of in induction region, can increase permanent magnets quantity as far as possible, utilize to greatest extent the rolling disc displacement information, how output information accurately locates again, can regulate the sensing element of output signal model.Use is measured moment without elastic component and other machinery on moped, also can make the power-assisted demand good with the power-assisted coupling that provides, and can give and personalized power-assisted, the moped sensor sensing element that motor operates steadily different people in fact.
Design of the present utility model is: but in a Hall receptive field, carry out different variation pattern settings with a plurality of permanent magnets on the rolling disc, make an one Hall can experience the motor message of whole permanent magnets.The variation pattern of a plurality of permanent magnets mainly is that magnetic polarity variation, variations in skews, position can be regulated by the user, purpose make Hall can obtain ad-hoc location more accurate, be more suitable for individual demand, with better function, the more permanent magnets motor message of control.
A plurality of permanent magnets magnetic polarities alternately change with the arctic, the South Pole, and the signal that Hall is produced is square wave, controls with better function, more;
The signal that a plurality of permanent magnets variations in skews produce Hall have different wave spaces from, the movement position that can express permanent magnets is more accurate, thereby can express the motion state of ad-hoc location, for moped, the ad-hoc location of expressing pedal is extremely important in what motion state because the motion state direct representation of pedal the power-assisted need state of people to car;
The permanent magnets position can be regulated by the user, but the signal user adjusting that Hall is produced, and the user just can regulate control signal by the family and regulate control mode and Control the content, has the function of controlling by personalized mode.
The rotating disc type sensing element that many magnetic patch position is adjustable, comprise a rolling disc 1 and many pieces of permanent magnets 2, it is characterized in that: be fixedly installed many pieces of permanent magnets 2 on the rolling disc 1, these many pieces of permanent magnets 2 are distributed in annular 6 scopes, have at least a circular rail trace to run through whole permanent magnets 2 between the interior circular trajectory 5-1 of annular 6 and the outer ring trajectory 5-2; Interior circular trajectory 5-1 and outer ring trajectory 5-2 are concentric circles, have at least 2 one-tenth of two pieces of permanent magnets to be dislocatedly distributed; Being dislocatedly distributed is radius mode or spacing a certain of mode that be dislocatedly distributed that be dislocatedly distributed; Or the radius mode that is dislocatedly distributed, the array mode that has again spacing to be dislocatedly distributed arranged namely;
The radius mode of being dislocatedly distributed is: have at least two permanent magnets 2 not identical to the distance at circle center, interior circular trajectory 5-1 place;
The spacing mode of being dislocatedly distributed is: the distance between the adjacent permanent magnets 2 is permanent magnets spacing 7; Have at least the length of two permanent magnets spacings 7 not identical;
Have a bar hole 8 at least between interior circular trajectory 5-1 and outer ring trajectory 5-2, be provided with permanent magnets 2 in the bar hole 8, permanent magnets 2 can be fixed on any position in the bar hole 8;
In certain one side of rolling disc 1, the magnetic polarity of adjacent permanent magnets 2 is opposite, and namely simultaneously to go up the magnetic polarity distribution mode of whole permanent magnets 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
Also comprise a Hall 3, Hall 3 is positioned at certain one side of rolling disc 1, and Hall 3 is located at the position that also can experience permanent magnets 2 magnetic flux near permanent magnets 2, between Hall 3 and the permanent magnets 2 spacing is arranged; Hall 3 is the Halls that opposite magnetic polarities produced the square wave output signal.
Rolling disc 1 can be the on-deformable plate of material such as plastic plate, the exhausted plate of high strength, copper coin, aluminium sheet.When using sensing element, rolling disc 1 will rotate, and the center of rotation is exactly that 2 one-tenth annular distributions of a plurality of permanent magnets are at the center of circle.
A plurality of permanent magnets 2 are in annular 6 scopes, the purpose that becomes annular to distribute is only to experience with a Hall 3 motion state of whole permanent magnets 2 on the rolling disc, namely experience movement position and the speed of whole permanent magnets 2 on the rolling disc, and the variation of speed, or title acceleration, this Hall 3 just can be expressed the motion state of permanent magnets 2 with a continuous electric signal, because it is on the rolling disc 1 that whole permanent magnets 2 is separately fixed at rolling disc, then the continuous electric signal of Hall 3 generations just can be expressed the motion state of rolling disc again.If this continuous electric signal is used for other object of control, this continuous electric signal is exactly control signal.If be used for the motor of control moped, also need with single-chip microcomputer or other electron component as sensing signal processor, position in the control signal, speed, acceleration key element converted to needs what power-assisted signal of power-assisted, the function that converts is exactly the power-assisted demand model, or claims the power-assisted model.
2 one-tenth meanings that are dislocatedly distributed of a plurality of permanent magnets are: making in the electric signal that Hall 3 produces is not duplicate pulse signal, but the different pulse signal of pulse width, distinguish the diverse location of permanent magnets 2 with distinguishing pulse signal, thereby can obtain the motion state of diverse location permanent magnets 2.But reach certain position of accurate expression rolling disc, or each there is the motion state of permanent magnets 2.As being used for moped, but accurate expression ride in the demand of diverse location to power-assisted, make the expression of power-assisted demand more accurate, then car is just more consistent with people's cooperation.
The permanent magnets 2 radius modes of being dislocatedly distributed are: the permanent magnets 2 that has is close to the center of rotation of rolling disc, and the permanent magnets 2 that has is away from the center of rotation of rolling disc.No matter but far and near, permanent magnets 2 must can be experienced, can produce in the scope of electric signal 3 of Halls.The scope that can produce electric signal is exactly the scope between interior circular trajectory 5-1 and the outer ring trajectory 5-2.For guaranteeing that Hall 3 can produce electric signal, have at least a circular rail trace to run through whole permanent magnets 2 between circular trajectory 5-1 and the outer ring trajectory 5-2 in requiring on the structure.Have at least two permanent magnets 2 not identical to the distance at circle center, interior circular trajectory 5-1 place, certainly can each permanent magnets 2 not identical to the distance at circle center, the radius that is each permanent magnets 2 is not identical, so that each pulse of Hall 3 electric signal can be illustrated in permanent magnets 2, make each pulse can represent a rolling disc position.
The permanent magnets 2 spacing modes of being dislocatedly distributed are: with the outward flange of permanent magnets 2 as the basis of measuring spacing, have at least the length of two permanent magnets spacings 7 not identical, certainly length that can every permanent magnets spacing 7 is not identical, so that each pulse of Hall 3 electric signal can be illustrated in permanent magnets 2, make each pulse can represent a rolling disc position.
Obtain 2 one-tenth two kinds of methods that have been dislocatedly distributed of permanent magnets, the first is when being fixed on permanent magnets 2 on the rolling disc 1, just has at least 2 one-tenth of two pieces of permanent magnets to be dislocatedly distributed.The second is to utilize to have a plurality of positions can be provided with permanent magnets 2 in the bar hole 8, on rolling disc 1, use at least a bar hole 8, one or more permanent magnets 2 are located in the bar hole 8, can change by human needs at any time the position of permanent magnets 2, namely regulate the position in the permanent magnets 2 place bar holes 8, be fixed after the adjusting, so, there is bar hole 8 just can regulate at any time permanent magnets 2 mode that is dislocatedly distributed, available same permanent magnets 2 makes Hall 3 produce different output signals, produces different control effects.As being used for moped, can make car to the power-assisted effect different from the people.
The magnetic polarity of adjacent permanent magnets 2 is very important technical characterictic on the contrary, all the magnetic polarity distribution mode of permanent magnets 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 high and low alternate square-wave signal of Hall 3 outputs, because the rolling disc that ends 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 that the control meaning is arranged as much as possible.The structure generation square wave that the magnetic polarity of adjacent permanent magnets 2 is opposite, and the identical structure generation sine wave of the magnetic polarity of adjacent permanent magnets 2, during especially for moped, generally placing restrictions at diameter as the rolling disc of sensing element is 10-15 centimetre, to obtain the signal of control function in this limit scope, rotate a week, produce square wave than producing sinusoidal wave available pulse number and many 7-9 doubly.Nature, the opposite structure of the magnetic polarity of adjacent permanent magnets 2 to the control effect of moped more, the people cooperates with car better, the rider people feels more comfortable.
Have being uneven in length in other any one permanent magnets spacing 7 of a permanent magnets spacing 7 at least.Bar hole 8 is for permanent magnets 2 is regulated the structure that is fixed on diverse location.By regulating permanent magnets 2 positions, can realize having at least being uneven in length in other any one permanent magnets spacing 7 of a permanent magnets spacing 7.Be not equal to other length, namely the permanent magnets spacing 7 of particular length can be used for representing the position of bicycle pedal.Preferably have being uneven in length in other any one permanent magnets spacing 7 of two permanent magnets spacings 7 at least, the permanent magnets spacing 7 of these two particular length corresponds respectively to two pedals, is used for the position of two pedals of expression bicycle.Because the circular motion of bicycle pedal is judged pedal position for the speed that obtains this circular motion, determine that the power-assisted model of circular motion is extremely important next time.
A certain inward flange of bar hole 8 is provided with two or more profiles of tooth protruding 9.For permanent magnets 2 being fixed on the some positions in a plurality of positions in the bar hole 8, prevent that permanent magnets 2 voluntarily displacement is put when rolling disc 1 rotates, so block steady permanent magnets 2 in a certain fixed position with the profile of tooth in the bar hole 8 protruding 9.
Rolling disc 1 is provided with center pit in the circle scope of the interior circular trajectory 5-1 place of a plurality of permanent magnets 2.If rolling disc 1 will be set on the rotation axis and use, will establish a hole that wears rotation axis on the rolling disc 1; For guaranteeing that rolling disc 1 is when rotating with rotation axis, Hall 3 can be experienced the motor message of each permanent magnets 2 on the rolling disc 1, then wear the center that the hole should be located at the interior circular trajectory 5-1 place circle scope of a plurality of permanent magnets 2 on the rolling disc 1, because interior circular trajectory 5-1 and outer ring trajectory 5-2 are concentric circles, certainly wear the outside center of circular rail trace 5-2 place circle scope, hole, wearing the hole is the hole, center of interior circular trajectory 5-1 and outer ring trajectory 5-2, i.e. center pit.That is to say, center pit is not necessarily circular, can be the shapes such as square, triangle, in order to can be nested with the rotation axis of the shapes such as square, triangle, but the interior sky of center pit necessarily comprises the center of interior circular trajectory 5-1 place circle, could use a Hall 3 to experience the motor message of whole permanent magnets 2 on rolling disc 1 rolling disc.
Rolling disc 1 is plastic plate, aluminum board, copper material plate a certain of non-magnet_conductible material.Because the utility model is the opposite structure of magnetic polarity of adjacent permanent magnets 2, can make the edge of adjacent permanent magnets 2 almost can be affixed the electric signal that also can make Hall 3 outputs that the control function is arranged.Plastic plate, aluminum board, the copper material plate of handy non-magnet_conductible material, or other on-deformable rolling disc.
Structure of the present utility model is:
Advantage of the present utility model: simple in structure, cost is low, permanent magnets quantity on the permanent magnets ring is not placed restrictions on, the pulse signal of outputting standard, there is not signal blind zone, only with one group of output signal of Hall total movement state of energy perfect representation Moving plate just, output signal can not drifted about in distortion, represent fixed position, permanent magnets place with putting between permanent magnets change in location and the adjusting permanent magnets position, the movement position that each permanent magnets can be arranged in the output signal, the output information model can be regulated, be used for moped, power-assisted output can highly be cooperated with the power-assisted demand and the cyclist is felt well, but not only robotization power-assisted, and has the function of carrying out power-assisted by personalization.
(1) simple in structure, without elastic component, machinery-free fault: experience a plurality of permanent magnets with Hall and rotate output signal, the speed that provides with Chinese patent 01201843.0 can be calculated the principle of moment, available multiple mathematical model is calculated the moment parameter of moped, the motor that is used for the control moped is realized power-assisted.Be lower than with elastic component and mechanically stressed sensor without elastic component, simple in structure, cost.After having avoided long-time use, each mechanical part distortion, machinery-free fault, the not good problem of cooperation.
(2) magnetic polarity is opposite, the output square-wave signal, has accurate control function,: because the magnetic polarity of adjacent permanent magnets is opposite, and Hall is selected the Hall that opposite magnetic polarities is produced the square wave output signal, then adjacent permanent magnets no matter spacing what, even very close to each other between the adjacent permanent magnets, Hall can be exported square-wave signal too.As being used for moped, the motor of controlling moped with the output signal of square wave is better than with sinusoidal wave, because the rectangle wave energy is accomplished at any time point of signal, 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 motion state with the accurate position of pedal and speed calculation.
(3) magnetic polarity of adjacent permanent magnets is opposite, permanent magnets 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 magnets 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 moped, owing to 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 magnets quantity, as far as possible increase the sensing point position, represent bicycle pedal movement position and speed, the Precise Representation motion state with as much as possible transducing signal.
(4) magnetic polarity of adjacent permanent magnets is opposite, can arrange that permanent magnets is many, the sensing point position is many, motion state to rolling disc represents accurately: to being used for moped, fixedly the rolling disc size of permanent magnets 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 permanent magnets under the condition of spacing arranged, the diameter of its permanent magnets is at least Ф 0.6-0.8 centimetre, then peripheral gapless 35-73 permanent magnets ［ (10-1) the * 3.14/0.8=35 that arranges of diameter 10-15 centimetre rolling disc; (15-1) * 3.14/0.6=73 ］, namely pedal circles, and Hall can obtain the motor that 35-73 signal is used for the control moped.But if the identical prior art of adjacent permanent magnets magnetic polarity, adjacent permanent magnets then on diameter 10-15 centimetre rolling disc, can only arrange at most 5-8 permanent magnets ［ (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 magnets 7-9 than prior art more; 73/8=9 ］, 30-65 permanent magnets ［ 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 degree of accuracy to moped has improved 7-9 doubly naturally, make the cyclist also improve 7-9 doubly to power-assisted demand degree of accuracy, car and people's cooperate degree improves greatly, and cyclist's comfort increases greatly, no longer is vehicle using motor the sort of one fast one slow uncomfortable sensation of prior art.The utility model is asked someone according to the experience of reality, when roughly 15 permanent magnets being set uniformly on the rolling disc, elimination prior art only establish 5-8 permanent magnets and make vehicle using motor the sort of one fast one slow uncomfortable sensation; When roughly 20 permanent magnets being set uniformly on the rolling disc, car cooperates oneself can satisfy human needs with the people's, and the sensation of riding vehicle using motor is very comfortable.
(5) do not have 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 magnets at diameter 10-15 centimetre rolling disc periphery, and average angle is the 5-10 degree between each permanent magnets.Be used for moped, when starting or move, pedal is in the 35 degree zones of leaving 10-45 degree angle, summit, 4-7 permanent magnets (signal just having been arranged in the position of leaving 10 degree angles, summit) arranged, then the exportable 4-7 of Hall control signal reacted 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.
(6) only with a Hall, a control signal represents the total movement state of rolling disc, the motion state of control signal and rolling disc is in full accord, control signal and people's demand is in full accord: a plurality of permanent magnets are fixed on the rolling disc, permanent magnets and rolling disc rotate synchronously, with a whole permanent magnets motor message of Hall impression, then the motion state 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, also be 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 moped, 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.
(7) have dislocation between the permanent magnets, the dislocation permanent magnets can represent the motion state of specific site: because permanent magnets is in radial direction dislocation or the dislocation of circular arc line spacing, the dislocation permanent magnets makes Hall export the control signal of peculiar waveform, the motion state in a certain fixedly permanent magnets site that then control signal of peculiar waveform just can the direct representation rolling disc; Such as each permanent magnets oneself specific dislocation site is arranged, what permanent magnets can reach has, and just can obtain the motion state signal of what specific sites.As being used for moped, the rolling disc diameter is in 10-15 centimetre, and rolling disc circles, and Hall can obtain the control signal of 35-73 different loci motion state, naturally knows the power-assisted demand in 35-73 site.Clearly, rolling disc circles, and prior art can only have at most 5-8 power-assisted demand, is nothing like the power-assisted demand that the maximum available 35-73 of a this patent power-assisted desired signal more can react the cyclist truly.That is to say that moped the art of this patent, Che Gengneng and people's demand match consistent, the cyclist experiences pedal in any turned position, but oneself complete regulation speed all, and comfortableness is good.And but the moped of prior art can only be at maximum 5-8 turned positions ability regulation speed.
(8) can regulate the permanent magnets position, just can regulate on demand the model of control signal, realize personalized control: on rolling disc all in the permanent magnets, as regulate spacing between the part permanent magnets, in the signal of Hall output, wave space will occur the waveform of regulating the permanent magnets of spacing changes, and namely signal model changes, just can select different signal model control by the control object, realize personalized control.As being used for moped, can be according to the strength of different people, or the custom of exerting oneself selects the signal model that is fit to, namely regulates the power-assisted model according to different people, but makes not only robotization power-assisted of moped, and have the function of carrying out power-assisted by personalization.
Description of drawings
Fig. 1 is that a plurality of N-S of uneven distribution replace permanent magnets on the rolling disc, and the sensing element structural representation of permanent magnets position-adjustable is arranged;
Fig. 2 is that a plurality of N-S of high density uneven distribution replace permanent magnets on the rolling disc, and the sensing element structural representation of permanent magnets position-adjustable is arranged.
1 is rolling disc, the 2nd among the figure, permanent magnets, the 3rd, and Hall, 5-1 are that interior circular trajectory, 5-2 are outer ring trajectories, the 6th, annular, the 7th, magnetic patch spacing, the 8th, bar hole, the 9th, profile of tooth is protruding.
Embodiment
Embodiment 1, the rotating disc type sensing element that many magnetic patch position is adjustable
Such as Fig. 1, relative with both concave surfaces of an annular groove rolling disc 1 and an annular groove shaft collar 20, the size of annular groove rolling disc 1 and annular groove shaft collar 20 just in time makes annular groove shaft collar 20 can be entrenched among the annular groove of annular groove rolling disc 1, synthetic two dishes are chimeric interior empty shell in relative rotation, and the concave surface of two dishes presss from both sides into a cavity ring 21; Annular groove rolling disc 1 in cavity ring 21 positions is fixedly installed 20 permanent magnets 2.Annular groove rolling disc 1 and annular groove shaft collar 20 highstrenghtpiston's injection molded.
10.0 centimetres of 1 diameters of annular groove rolling disc in the cavity ring 21, the diameter of establishing 2,20 permanent magnets 2 of 20 permanent magnets at annular groove rolling disc 1 are respectively 0.8 centimetre, and magnetic flux is 146---279 (BH) max/KJm
-3In some values.The structure of annular groove rolling disc 1, permanent magnets 2, Hall 3 is as follows:
Each permanent magnets 2 is fixed in 8.0 centimetres of the diameters in annular 6 scopes between the circular trajectory 5-1-9.5 centimetre of outer ring trajectory 5-2, has 2 one-tenth radiuses of a plurality of permanent magnets to be dislocatedly distributed, and has 2 one-tenth spacings of a plurality of permanent magnets to be dislocatedly distributed.
The radius mode of being dislocatedly distributed is: these a plurality of permanent magnets 2 are distributed in annular 6 scopes, have at least a circular rail trace to run through whole permanent magnets 2 between the interior circular trajectory 5-1 of annular 6 and outer ring trajectory 5-2; Interior circular trajectory 5-1 and outer ring trajectory 5-2 are concentric circles, have at least two permanent magnets 2 not identical to the distance at circle center, interior circular trajectory 5-1 place;
The spacing mode of being dislocatedly distributed is: the distance between the adjacent permanent magnets 2 is permanent magnets spacing 7; Have at least the length of two permanent magnets spacings 7 not identical.
Being uneven in length in the length of other any one permanent magnets spacing 7 of two permanent magnets spacings 7 arranged, and the length of these two permanent magnets spacings 7 is also unequal.The position that two permanent magnets 2 are arranged at these two permanent magnets spacing 7 places is just in time at the two ends of 1 one diameters of rolling disc, and these two permanent magnets 2 are used for the movement position at two pedals of moped expression.
The bar hole 8 of two arcs is arranged between interior circular trajectory 5-1 and outer ring trajectory 5-2, be provided with permanent magnets 2 in the bar hole 8, this permanent magnets 2 can be fixed on any position in the bar hole 8; This permanent magnets 2 is the fixed connection structures that can discharge with bar hole 8, and other position of changing in the bar hole 8 after can the permanent magnets 2 in bar hole 8 discharging is fixedly connected with again, regulates this permanent magnets 2 and the permanent magnets spacing 7 of facing mutually between the permanent magnets 2.The inward flange of bar hole 8 is provided with two or more profiles of tooth protruding 9.A permanent magnets 2 is stuck among the profile of tooth protruding 9.Bar hole 8 is oblique structures, and namely bar hole 8 two ends are unequal with the distance in the center of circle at interior circular trajectory 5-1 place respectively.Two 2 one-tenth radius dislocation of a plurality of permanent magnets modes of bar hole 8 are distributed.
The opposite mode of magnetic polarity in 2 one-tenth adjacent permanent magnets 2 of whole permanent magnets of 1 one face settings of rolling disc is arranged, namely on 1 one faces of rolling disc all the magnetic polarity distribution mode of permanent magnets 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 the side that rolling disc 1 has permanent magnets 2 with a Hall 3, Hall 3 is located at the position near permanent magnets 2, be Hall 3 be located at each permanent magnets 2 circular rail trace 5-1 and annular 6 scopes between the outer ring trajectory 5-2 in, Hall 3 keeps 0.3 centimetre spacing distance with each permanent magnets 2 of rotary state, make each permanent magnets 2 of rotation through Hall 3 time, Hall 3 can produce the square wave electric signal output of a correspondence.Hall 3 is Halls.
Rolling disc 1 is provided with center pit at the interior circular trajectory 5-1 center of these whole permanent magnets 2, and center pit is for using in the pedal axis that is enclosed within moped or the runner rotating shaft.
Such as Fig. 2, a face of the high strength aluminium rolling disc 1 that diameter is 10.0 centimetres arranges 40 permanent magnets 2 of 0.6 centimetre of diameter.The magnetic flux of permanent magnets 2 is 146---279 (BH) max/KJm
-3In some values, Hall 3 keeps 0.2 centimetre spacing distance with each permanent magnets 2 of rotary state, makes each permanent magnets 2 of rotation through Hall 3 time, Hall 3 can produce the square wave electric signal output of a correspondence.The arc place circle of arc bar hole 8 is concentric circles with interior circular trajectory 5-1.The structure of other rolling disc 1, permanent magnets 2, Hall 3 is same as embodiment 1.
Claims (9)
1. the adjustable rotating disc type sensing element in many magnetic patch position, comprise a rolling disc (1) and many pieces of permanent magnets (2), it is characterized in that: be fixedly installed many pieces of permanent magnets (2) on the rolling disc (1), these many pieces of permanent magnets (2) are distributed in an annular (6) scope, have at least a circular rail trace to run through whole permanent magnets (2) between the interior circular trajectory (5-1) of annular (6) and the outer ring trajectory (5-2); Interior circular trajectory (5-1) and outer ring trajectory (5-2) are concentric circles, have at least two pieces of permanent magnets (2) to become to be dislocatedly distributed; Being dislocatedly distributed is radius mode or spacing a certain of mode that be dislocatedly distributed that be dislocatedly distributed; Or the radius mode that is dislocatedly distributed, the array mode that has again spacing to be dislocatedly distributed arranged namely;
The radius mode of being dislocatedly distributed is: have at least two permanent magnets (2) not identical to the distance at circle center, interior circular trajectory (5-1) place;
The spacing mode of being dislocatedly distributed is: the distance between the adjacent permanent magnets (2) is permanent magnets spacing (7); Have at least the length of two permanent magnets spacings (7) not identical;
Have a bar hole (8) at least between interior circular trajectory (5-1) and outer ring trajectory (5-2), be provided with permanent magnets (2) in the bar hole (8), permanent magnets (2) can be fixed on any position in the bar hole (8);
In certain one side of rolling disc (1), the magnetic polarity of adjacent permanent magnets (2) is opposite, and namely simultaneously to go up the magnetic polarity distribution mode of whole permanent magnets (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)
Also comprise a Hall (3), Hall (3) is positioned at certain one side of rolling disc (1), and Hall (3) is located at the position that also can experience permanent magnets (2) magnetic flux near permanent magnets (2), between Hall (3) and the permanent magnets (2) spacing is arranged; Hall (3) is the Hall that opposite magnetic polarities is produced the square wave output signal.
2. the rotating disc type sensing element that many magnetic patch according to claim 1 position is adjustable is characterized in that: bar hole (8) is the structure of arc, and the arc place circle of bar hole (8) is concentric circles with interior circular trajectory (5-1).
3. the rotating disc type sensing element that many magnetic patch according to claim 1 position is adjustable is characterized in that: bar hole (8) is oblique structure, and namely bar hole (8) two ends are unequal with the distance in the center of circle at interior circular trajectory (5-1) place respectively.
4. it is characterized in that: have being uneven in length in other any one permanent magnets spacing (7) of a permanent magnets spacing (7) at least according to claim 1 and 2 or the adjustable rotating disc type sensing element in 3 described many magnetic patch positions.
5. the rotating disc type sensing element that many magnetic patch according to claim 4 position is adjustable is characterized in that: a certain inward flange of bar hole (8) is provided with two or more profiles of tooth protruding (9).
6. the rotating disc type sensing element that many magnetic patch according to claim 4 position is adjustable is characterized in that: bar hole (8) and the syndeton of permanent magnets (2) for discharging.
7. the rotating disc type sensing element that many magnetic patch according to claim 4 position is adjustable is characterized in that: Hall (3) is located between interior circular trajectory (5-1) and the outer ring trajectory (5-2).
8. the rotating disc type sensing element that many magnetic patch according to claim 4 position is adjustable is characterized in that: rolling disc (1) is provided with center pit in the circle scope of interior circular trajectory (5-1) place of a plurality of permanent magnets (2).
9. the rotating disc type sensing element that many magnetic patch according to claim 4 position is adjustable is characterized in that: rolling disc (1) is plastic plate, aluminum board, copper material plate a certain of non-magnet_conductible material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220367986 CN202794212U (en) | 2012-07-28 | 2012-07-28 | Rotating disk type sensing element with a plurality of position-adjustable magnetic patches |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220367986 CN202794212U (en) | 2012-07-28 | 2012-07-28 | Rotating disk type sensing element with a plurality of position-adjustable magnetic patches |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202794212U true CN202794212U (en) | 2013-03-13 |
Family
ID=47821454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220367986 Withdrawn - After Issue CN202794212U (en) | 2012-07-28 | 2012-07-28 | Rotating disk type sensing element with a plurality of position-adjustable magnetic patches |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202794212U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102785740A (en) * | 2012-07-28 | 2012-11-21 | 成都宽和科技有限责任公司 | Multi-magnetic block position-adjustable turntable sensing element |
-
2012
- 2012-07-28 CN CN 201220367986 patent/CN202794212U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102785740A (en) * | 2012-07-28 | 2012-11-21 | 成都宽和科技有限责任公司 | Multi-magnetic block position-adjustable turntable sensing element |
| CN102785740B (en) * | 2012-07-28 | 2014-02-05 | 成都宽和科技有限责任公司 | Multi-magnetic block position-adjustable turntable sensing element |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203381759U (en) | Rotating disc type sensing element with multiple magnet blocks and non-uniformly distributed magnetic flux | |
| CN202783674U (en) | Rotating disc type sensing element with a plurality of magnetic blocks uneven in magnetic flux distribution | |
| CN202783649U (en) | Sensing element with position-adjustable magnets in shell | |
| CN102785740B (en) | Multi-magnetic block position-adjustable turntable sensing element | |
| CN102795294A (en) | Rotating disk type sensing element with uniform distribution of multiple magnetic blocks | |
| CN202794212U (en) | Rotating disk type sensing element with a plurality of position-adjustable magnetic patches | |
| CN102826164B (en) | Sensing element provided with magnetic blocks with adjustable positions in shell | |
| CN203414089U (en) | Sensing element with multiple magnetic sheet positions and magnetic fluxes unevenly distributed in shell | |
| CN203381760U (en) | Magnetic flux sensing element with multiple magnetic blocks non-uniformly distributed in housing | |
| CN202783665U (en) | Rotating disc type sensing element with a plurality of magnetic blocks adjustable in position and magnetic flux | |
| CN103381874B (en) | The rotating disc type sensitive member of many magnetic sheets and magnetic flow all uneven distribution | |
| CN202793429U (en) | Sensor with a plurality of magnetic block positions and magnetic fluxes adjustable in housing | |
| CN203581297U (en) | Rotary disc type sensing element with uneven distribution of magnetic patches | |
| CN202783651U (en) | Sensing element with adjustable magnet position and fluxes in shell | |
| CN202783652U (en) | Rotating disc type sensing element with a plurality of magnetic blocks uneven in position distribution | |
| CN202783664U (en) | Electric bicycle utilizing sensor with adjustable magnet positions and magnetic flux in shell | |
| CN202783650U (en) | Electric bicycle utilizing sensor with adjustable multiple magnet positions in shell | |
| CN202783662U (en) | Electric bicycle utilizing sensor with adjustable multiple magnet positions in shell | |
| CN102826179B (en) | Sensing element with adjustable positions and magnetic fluxes of magnetic blocks in shell | |
| CN202783638U (en) | Rotating disc type sensing element with a plurality of magnetic blocks uneven in magnetic flux and position distribution | |
| CN203410586U (en) | Sensing element with shell internally provided with multiple unevenly distributed magnetic blocks | |
| CN202783630U (en) | Sensing element with non-uniformly distributed magnets and fluxes in shell | |
| CN202847951U (en) | Rotating disc type sensing element with multi-magnetic block evenly distributed | |
| CN202783637U (en) | Sensing element with non-uniformly distributed fluxes of magnets in shell | |
| CN102826176B (en) | Turntable sensing element with adjustable magnetic fluxes of magnetic blocks and points |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130313 Effective date of abandoning: 20140205 |
|
| RGAV | Abandon patent right to avoid regrant |