CN102785740A - Multi-magnetic block position-adjustable turntable sensing element - Google Patents
Multi-magnetic block position-adjustable turntable sensing element Download PDFInfo
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- CN102785740A CN102785740A CN2012102635005A CN201210263500A CN102785740A CN 102785740 A CN102785740 A CN 102785740A CN 2012102635005 A CN2012102635005 A CN 2012102635005A CN 201210263500 A CN201210263500 A CN 201210263500A CN 102785740 A CN102785740 A CN 102785740A
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Abstract
The invention discloses a multi-magnetic block position-adjustable turntable sensing element, belongs to the technical field of providing signals by magnetic induction, and in particular relates to the technology of providing control signals by performing multi-point magnetic induction on a rotary part. A plurality of permanent magnet blocks which are arranged annularly are fixedly arranged on a turntable; the distance among the permanent magnet blocks can be adjusted; on one side of the turntable, the magnetic polarities of adjacent permanent magnet blocks are opposite, namely the distribution way of the magnetic polarities of all permanent magnet blocks on a certain side of the turntable is pole N, pole S, pole N, ellipsis; and a Hall element is arranged at the position close to the permanent magnet blocks. The multi-magnetic block position-adjustable turntable sensing element has the advantages that the Hall element can acquire square-wave signals by utilizing the NS opposite distribution way of the magnetic polarities of the adjacent permanent magnet blocks, and digital processing of the signals is facilitated; the square-wave signals can represent the positions of the permanent magnet blocks on the turntable by adjusting the distance among the permanent magnet blocks, and the application of different square waves are determined.
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 the magnetic induction of multiple spot position 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 morpet and has used sensing device; Sensing device comprises that magnetic part and elastic component cooperate, 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 people's power-assisted need be mismatched.And complicated with the project organization of elastic component, manufacturing cost is high.
The Chinese patent 01201843.0 " electric assisted bicycle automatic checkout equipment " of University of Science & Technology, Beijing's application discloses a kind of electric assisted bicycle automatic checkout equipment; The no touch detection is pedaled power, speed and is turned to; This device is established magnetic sheet respectively 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 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 people's power-assisted need be mismatched, 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 position separately of different magnetic sheet groups can not express the special power-assisted demand of diverse location: from Fig. 3,4,5 of 01201843.0 patent, 6 and the record explanation of the 2nd section of Instructions Page 2, the magnetic pole set-up mode of each magnetic sheet group (comprising a magnetic sheet 4, magnetic sheet 5, a magnetic sheet 6) is all identical; Promptly only be that diverse location at interior wheel is simply from being provided with identical magnetic sheet group again; The state of kinematic motion of ad-hoc location can not be represented in the position separately that can not represent different magnetic sheet groups, and the people is by bike the time; Pedal and with corresponding each position of pedal at state of kinematic motion; Own special power-assisted demand is all 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 all the same; Then each magnetic sheet group can not be represented this position of magnetic sheet group on interior wheel; The signal that Hall is exported can not be represented the position of stretcher and other magnetic sheet group; The signal that is Hall output can not be represented different foot positions to power-assisted demand, cause to power-assisted demand with provide the power-assisted time to mismatch, promptly man-machine cooperation is undesirable.
The shortcoming sine wave output makes the magnetic sheet group Edge Distance can not be less than 4 centimetres; Be good with 5 centimetres generally, 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 that sinusoidal waveform is as control signal; As the control signal sinusoidal waveform 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 8 magnetic sheet groups at most on 20 centimetres the rolling disc circular trace at diameter; Be good with 5 generally, Hall just can have the sine wave signal of controllable function.That is to say that this technical scheme of 01201843.0 patent is used for morpet, 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 horizon, this signal does not have controllable function, can not the control motor, when making it need power-assisted especially, lose assist function.
Shortcoming (5) signal blind zone reaches miter angle, needs really to can not get power-assisted the time power-assisted during startup: well-known, the people step on bicycle pedal on the summit moment minimum; From leaving 10-45 degree angle, summit is to need most power-assisted zone; 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 stretcher, also with regard to the neither one control signal; Consequently need most power-assisted the time, but the motor of morpet really can not power-assisted.
In a word, except that with the not durable complex structure again of elastic component, the fit structure characteristics of Yin Huoer 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 match, cyclist's traveling comfort is poor; As increasing magnetic sheet group quantity by force, its transducing signal loses the power operated control function again.
The Chinese patent 03264387.X " time type electric assisted bicycle sensor " 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 following:
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; Then can only be the same one side that the same pole of two permanent magnetic steels is located at Moving plate, promptly in certain one side of Moving plate, two permanent magnetic steels all be the arctic or all be the South Pole.If in the same one side 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 have only 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 the control effect, can only be that each permanent magnetic steel same pole is in one side.
Characteristics (2) permanent magnetic steel is used to represent the pedal fixed position; Three Halls are represented the pedal travel position: because pedal and Moving plate are synchronous rotations; So with two cooresponding Moving plates of pedal on the fixing respectively permanent magnetic steels in two positions; Where some pedals change, and where then cooresponding permanent magnetic steel also changes; But have only commentaries on classics in the position that Hall is arranged, could send control signal through Hall, the power-assisted that the motor generation of commander's morpet needs is rotated.
The position of different period pedal travels during characteristics (3) can not be represented to circle because of a Hall; Then just can not be: the different periods of pedal in circling only with a Hall; The power-assisted demand there is very big difference; Embody the variation of this power-assisted demand, this patent is located at 180 degree angles respectively with three interior positions with three Halls, and two permanent magnetic steels are located at two pedal positions respectively; Pedal changes in the position that Hall is arranged, and this Hall representes that with regard to output signal pedal has arrived the position of this Huo Yuan.But there is following shortcoming again with a plurality of Halls.
These characteristics as the morpet sensor have three shortcomings:
Shortcoming (1) is represented the fixed position of two pedals respectively with two permanent magnetic steels that do not have an otherness; The turned position that just can only represent pedal with a plurality of Halls: two permanent magnetic steels do not have otherness; Advantage is the fixed position of representing two pedals respectively that can be regardless 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 a 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 is represented 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 morpet is one or two motor, the transducing signal of its control motor can only just can reach the purpose of control motor with a transducing signal input electric machine controller; And this patent is with three Halls control motors, then must merge into one to three control signals of three Halls and could import electric machine controller after merging control signal.The parameter sensing of three Halls can not be the same; Particularly owing to after variation of ambient temperature, the period of service length; The parameter sensing of three Halls maybe 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; During in like manner identical power-assisted demand, the output of different Halls possibly be identical voltage again, cause motor to produce with a kind of power-assisted output, also produce power-assisted output and the inconsistent problem of power-assisted demand.
Shortcoming (3) merges control signal and is prone to produce signal drift; Merging control signal and electric machine controller are not matched; The distortion of power-assisted demand model: after variation of ambient temperature, period of service length, the parameter sensing of three Halls maybe be widely different, and three control signal point of connection of three Halls must change; The merging control signal that then identical power-assisted demand produces will produce the signal drift of segmenting; Merge control signal as a whole signal distortion that produces, i.e. power-assisted demand model distortion, any one that causes that electric machine controller selects three control signals for use 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) are arranged all because Hall quantity causes greater than one, clearly Hall quantity is measured manyly more more, and shortcoming (1) and shortcoming (2) show serious more.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 degree angles, needs really to can not get power-assisted the time power-assisted during startup: well-known, the people step on bicycle pedal on the summit moment minimum; From leaving 10-45 degree angle, summit is to need most power-assisted zone; 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; Consequently need most power-assisted the time, but the motor of morpet really can not power-assisted.
In a word; This patent is that because can only represent the turned position of pedal with a plurality of Halls, a plurality of control signals of a plurality of Halls must have original error with the technical scheme of a plurality of Hall control assistant modes; It merges control signal and is prone to produce signal drift again; All can cause the distortion of power-assisted demand model, i.e. the identical power-assisted demand of different time, but obtain different power-assisted effects; Hall quantity is measured many more more, and the distortion of power-assisted demand model is serious more, 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 invention is to provide the sensitive member 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 the rolling disc displacement information to greatest extent, how output information accurately locatees the sensitive member of scalable output signal model again.Use is measured moment without elastic component and other machinery on morpet, also can make the power-assisted demand good with the power-assisted coupling that provides, and can give and personalized power-assisted different people in fact, and the morpet sensor that motor operates steadily is used sensitive member.
Design of the present invention 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 of which 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 accurately, be more suitable for individual demand, stronger, the more permanent magnets motor message of controllable function.
A plurality of permanent magnets magnetic polarities are with the arctic, South Pole alternate, and the signal that Hall is produced is a square wave, and controllable function is stronger, more;
The signal that a plurality of permanent magnets variations in skews produce Hall has different wave spaces to leave; The movement position that can express permanent magnets is more accurate; Thereby can express the state of kinematic motion of ad-hoc location; For morpet, the ad-hoc location of expressing stretcher is extremely important at what state of kinematic motion because the state of kinematic motion direct representation of stretcher 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 come regulating control mode and control content through family regulating control signal, has the function of controlling by personalized mode.
The rotating disc type sensitive member of many magnetic patch adjustable positions; Comprise a rolling disc 1 and many pieces of permanent magnets 2; It is characterized in that: be set with many pieces of permanent magnets 2 on the rolling disc 1; These many pieces of permanent magnets 2 are distributed in annular arrangement 6 scopes, have at least a circular rail trace to run through whole permanent magnets 2 between the interior circular rail trace 5-1 of annular arrangement 6 and the outer ring trajectory 5-2; Interior circular rail trace 5-1 and outer ring trajectory 5-2 are concentric circles, have at least two pieces of permanent magnets to be dislocatedly distributed for 2 one-tenth; 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 spacing to be dislocatedly distributed again arranged promptly;
The radius mode of being dislocatedly distributed is: have at least two permanent magnets 2 inequality to the distance at circle center, interior circular rail trace 5-1 place;
The spacing mode of being dislocatedly distributed is: the distance between the adjacent permanent magnets 2 is a permanent magnets spacing 7; Have at least the length of two permanent magnets spacings 7 inequality;
Between interior circular rail trace 5-1 and outer ring trajectory 5-2, have a bar hole 8 at least, 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 promptly 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 flow 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 on-deformable plate of material such as the exhausted plate of plastic flagstone, high strength, copper coin, aluminium sheet.When using sensitive member, rolling disc 1 will rotate, and the center of rotation is exactly the center of 2 one-tenth annular arrangements distributions of a plurality of permanent magnets place circle.
A plurality of permanent magnets 2 are in annular arrangement 6 scopes; The purpose that becomes annular arrangement to distribute is only to experience with a Hall 3 state of kinematic motion of whole permanent magnets 2 on the rolling disc; Promptly experience the movement position and the speed of whole permanent magnets 2 on the rolling disc; And the variation of speed, or claim acceleration/accel, this Hall 3 just can be expressed the state of kinematic motion 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 state of kinematic motion of rolling disc again.If be used to control other object to this continuous electric signal, this continuous electric signal is exactly a control signal.If be used to control the motor of morpet; Also need be with micro controller system or other electron component as sensing signal processor; Converting the position in the control signal, speed, acceleration/accel key element 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 impulse singla; But pulse width different pulse signal; Distinguish the diverse location of permanent magnets 2 with distinguishing impulse singla, thereby can obtain the state of kinematic motion of diverse location permanent magnets 2.Reach and accurately to express certain position of rolling disc, or each there is the state of kinematic motion of permanent magnets 2.As be used for morpet, and can accurately express and ride at diverse location power-assisted demand, 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 near from the center of turn of rolling disc, and the permanent magnets 2 that has is far away from the center of turn 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 rail trace 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 rail trace 5-1 and the outer ring trajectory 5-2 in requiring on the structure.Have at least two permanent magnets 2 inequality to the distance at circle center, interior circular rail trace 5-1 place; Certainly each permanent magnets 2 is inequality to the distance at circle center; The radius that is each permanent magnets 2 is inequality; 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 inequality; Certainly the length of every permanent magnets spacing 7 is inequality; 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, first kind is to be fixed on 1 last time of rolling disc to permanent magnets 2, just has at least two pieces of permanent magnets to be dislocatedly distributed for 2 one-tenth.Second kind 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 a bar hole 8 at least, be located at one or more permanent magnets 2 in the bar hole 8, can change the position of permanent magnets 2 at any time by human needs; Just 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 permanent magnets 2 mode that is dislocatedly distributed at any time; Available same permanent magnets 2 makes Hall 3 produce different output signals, produces the Different control effect.As be used for morpet, can make car give the power-assisted effect different with the people.
The magnetic polarity of adjacent permanent magnets 2 is important techniques characteristic very 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 as the rolling disc that limited size is ended, rotate the accurate variable signal that will obtain in a week as much as possible, should be to select square wave for use certainly.The time that the peak-to-valley value of square-wave signal changes is short, can in the regular hour, produce the signal that control Significance is arranged as much as possible.The magnetic polarity opposite configuration of adjacent permanent magnets 2 produces square wave; And the identical structure of the magnetic polarity of adjacent permanent magnets 2 produces sinusoidal waveform; During especially for morpet, generally place restrictions at diameter as the rolling disc of sensing element and be 10-15 centimetre, will obtain the signal of controllable 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 magnetic polarity opposite configuration of adjacent permanent magnets 2 to the control effect of morpet more, the people cooperates with car better, the rider people feels more comfortable.
Have being uneven in length of a permanent magnets spacing 7 at least in other any one permanent magnets spacing 7.Bar hole 8 is to be used for regulating the structure that is fixed on diverse location to permanent magnets 2.Through regulating permanent magnets 2 positions, can realize having at least being uneven in length of a permanent magnets spacing 7 in other any one permanent magnets spacing 7.Be not equal to other length, promptly 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 stretchers, is used to represent the position of two stretchers of bicycle.Because the circular movement of bicycle pedal is judged the stretcher position for the speed that obtains this circular movement, confirm that the power-assisted model of circular movement is extremely important next time.
A certain inward flange of bar hole 8 is provided with two or more profiles of tooth protruding 9.In order to be fixed on permanent magnets 2 the some positions in a plurality of positions in the bar hole 8, prevent that permanent magnets 2 displacement is voluntarily 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 centre hole in the circle scope of the interior circular rail trace 5-1 place of a plurality of permanent magnets 2.If rolling disc 1 will be set on the turning cylinder and use, will establish a hole that wears turning cylinder on the rolling disc 1; For guaranteeing that rolling disc 1 is when rotating with turning cylinder; 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 rail trace 5-1 place circle scope of a plurality of permanent magnets 2 on the rolling disc 1,, wear the center of the round scope in circular rail trace 5-2 place outside, hole certainly because interior circular rail trace 5-1 is a concentric circles with outer ring trajectory 5-2; Wearing the hole is the hole, center of interior circular rail trace 5-1 and outer ring trajectory 5-2, i.e. centre hole.That is to say; Centre hole is not necessarily circle; Can be shapes such as square, triangle; So that can be nested with the turning cylinder of shape such as square, triangle, but the interior sky of centre hole necessarily comprise in the center of circular rail trace 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 flagstone, aluminium plate, copper material plate a certain of non-magnet_conductible material.Because the present invention is the magnetic polarity opposite configuration of adjacent permanent magnets 2, can make the edge of adjacent permanent magnets 2 almost can paste the electric signal that also can make Hall 3 outputs that controllable function is arranged mutually.Plastic flagstone, aluminium plate, the copper material plate of handy non-magnet_conductible material, or other on-deformable rolling disc.
Structure of the present invention is:
Advantage of the present invention: simple in structure, cost is low, the permanent magnets quantity on the permanent magnets ring not restricted, outputting standard impulse singla, do not have signal blind zone, only with one group of output signal of a Hall just can the perfect representation Moving plate total movement state, output signal can distortion do not drift about, with putting the movement position of representing that permanent magnets belongs to can have each permanent magnets in fixed position, the output signal between permanent magnets change in location and the adjusting permanent magnets position; Output information model scalable; Be used for morpet; Power-assisted output can highly be cooperated with the power-assisted demand and the cyclist is felt well; But not only automation power-assisted, and have by personalization and carry out power-assisted function.
(1) simple in structure; Without elastic component; Do not have mechanical fault: experience a plurality of permanent magnets with Hall and rotate output signal, can calculate torque principle with the speed that Chinese patent 01201843.0 provides, available multiple math modeling is calculated the moment parameter of morpet; Be used to control the motor of morpet, realize 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 is out of shape, does not have mechanical fault, cooperates not good problem.
(2) magnetic polarity is opposite; The output square-wave signal has the accuracy 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 for use; 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 be used for morpet; The motor of controlling morpet with the output signal of square wave is superior to 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, thereby can accurately represent the movement position and the speed of booster bicycle pedal, so that go out the correct power-assisted demand of this state of kinematic motion with accurate position of pedal and speed calculation.
(3) magnetic polarity of adjacent permanent magnets is opposite; Permanent magnets quantity is restricted not, can increase the sensing point position as far as possible: because magnetic polarity is opposite, and the output square-wave signal; Even adjacent permanent magnets does not have the gap; The signal of its output has remained number, differentiable square-wave signal, still has controllable function, and that is to say can not export does not have the no change of controllable function linear signal.As be used for morpet; Because rolling disc diameter restricted with the pedal interlock; 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 with as much as possible transducing signal, accurately represent state of kinematic motion.
(4) magnetic polarity of adjacent permanent magnets is opposite; Can be provided with that permanent magnets is many, the sensing point position is many; The state of kinematic motion of rolling disc is represented accurately: to being used for morpet; Fixedly the rolling disc size of permanent magnets receives strictness and places restrictions on, and general rolling disc diameter can only have the magnetic pole signal that obtains permanent magnets under the condition of spacing in order to make Hall in 10-15 centimetre; The diameter of its permanent magnets is at least Ф 0.6-0.8 centimetre, then peripheral zero-lash 35-73 permanent magnets ［ (10-1) the * 3.14/0.8=35 that is provided with of diameter 10-15 centimetre rolling disc; (15-1) * 3.14/0.6=73 ］, promptly stretcher circles, and Hall can obtain the motor that 35-73 signal is used to control morpet.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 be provided with 5-8 permanent magnets ［ (10-1) * 3.14/5.8=5 at most by 5 centimetres of spacings; (15-1) * 3.14/5.6=8 ］.It is thus clear that patent art can be provided with 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, patent art 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, no longer is the boosted vehicle the sort of one fast one slow uncomfortable feeling of prior art.The present invention asks someone according to the experience of reality, when on the rolling disc 15 permanent magnets being set uniformly roughly, having eliminated prior art basically and has only established 5-8 permanent magnets and make boosted vehicle the sort of one fast one slow uncomfortable feeling; When on the rolling disc 20 permanent magnets being set uniformly roughly, car cooperates oneself can satisfy human needs with the people's, and the sensation of riding boosted vehicle 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 be provided with 35-73 permanent magnets at most at diameter 10-15 centimetre rolling disc periphery, and average angle is the 5-10 degree between each permanent magnets.Be used for morpet; When starting or move, stretcher has 4-7 permanent magnets (just there has been a signal position leaving 10 degree angles, summit) in the 35 degree zones of leaving 10-45 degree angle, summit; Then the exportable 4-7 of Hall control signal reacts the power-assisted demand; Can realize any position, have power-assisted just can obtain corresponding power-assisted excellent technique effect 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 is represented the total movement state of rolling disc; The state of kinematic motion of control signal and rolling disc is in full accord, and control signal and people's demand is in full accord: a plurality of permanent magnets are fixed on the rolling disc, and permanent magnets and rolling disc rotate synchronously; With a whole permanent magnets motor message of Hall impression; Then the state of kinematic motion of the control signal of Hall output and rolling disc is in full accord, and just in full accord with people's demand, control signal does not have original segmentation sum of errors signal drift problem yet.Even the hall sensing parameter changes, also being that the The whole control signal is parallel moves, as long as receive the range of receiving broad of the electric machine controller of Hall control signal, the control effect of the Hall control signal that has changed becomes systematicness to change.As be used for morpet, and 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) dislocation is arranged between the permanent magnets; The dislocation permanent magnets can be represented the state of kinematic motion 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 state of kinematic motion in a certain fixedly permanent magnets site that then control signal of peculiar waveform just can the direct representation rolling disc; Like each permanent magnets oneself specific dislocation site is arranged all, what permanent magnets can reach has, and just can obtain the motion state signal of what specific sites.As be used for morpet, and 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 state of kinematic motion, knows the power-assisted demand in 35-73 site naturally.Clearly, rolling disc circles, and prior art can only have 5-8 power-assisted demand at most, 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 morpet is used patent art, it is consistent that Che Gengneng and people's demand match, and the cyclist experiences stretcher at any turned position, and oneself is the may command speed of a motor vehicle fully all, and traveling comfort is good.And the morpet of prior art can only be in maximum 5-8 turned positions ability may command speed of a motor vehicle.
(8) scalable permanent magnets position, the model of regulating control signal is on demand just realized personalized control: on rolling disc all in the permanent magnets; As regulate the spacing between the part permanent magnets; In the signal of Hall output, wave space will take place the waveform of regulating the permanent magnets of spacing changes, and promptly signal model changes; Just can select various signals model control Be Controlled object, realize personalized control.As be used for morpet, can be according to the strength of different people, or the custom of exerting oneself selects the signal model that is fit to, promptly regulates the power-assisted model according to different people, but makes not only automation power-assisted of morpet, and have by personalization and carry out power-assisted function.
Description of drawings
Fig. 1 is that a plurality of N-S of uneven distribution replace permanent magnets on the rolling disc, and the sensitive member 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 sensitive member 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 rail trace, 5-2 are outer ring trajectories, the 6th, annular arrangement, the 7th, magnetic patch spacing, the 8th, bar hole, the 9th, profile of tooth is protruding.
The specific embodiment
The rotating disc type sensitive member of embodiment 1, many magnetic patch adjustable positions
Like Fig. 1; Relative with both concave surfaces of an annular groove rolling disc 1 and annular groove reaction plate 20; The size of annular groove rolling disc 1 and annular groove reaction plate 20 just in time makes annular groove reaction plate 20 can be entrenched among the annular groove of annular groove rolling disc 1; Synthetic two dishes can be chimeric in relative rotation in empty shell, the concave surface of two dishes presss from both sides into a cavity ring 21; On the annular groove rolling disc 1 of cavity ring 21 positions, be set with 20 permanent magnets 2.Annular groove rolling disc 1 is used highstrenghtpiston's injection molded with annular groove reaction plate 20.
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 flow is 146---279 (BH) max/KJm
-3In some values.The structure of annular groove rolling disc 1, permanent magnets 2, Hall 3 is following:
Each permanent magnets 2 is fixed in 8.0 centimetres of the diameters in annular arrangement 6 scopes between the circular rail trace 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 arrangement 6 scopes, between the interior circular rail trace 5-1 of annular arrangement 6 and outer ring trajectory 5-2, have at least a circular rail trace to run through whole permanent magnets 2; Interior circular rail trace 5-1 and outer ring trajectory 5-2 are concentric circles, have at least two permanent magnets 2 inequality to the distance at circle center, interior circular rail trace 5-1 place;
The spacing mode of being dislocatedly distributed is: the distance between the adjacent permanent magnets 2 is a permanent magnets spacing 7; Have at least the length of two permanent magnets spacings 7 inequality.
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 spacings, 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 of two stretchers of expression on morpet.
The bar hole 8 of two arcs is arranged between interior circular rail trace 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, can after the permanent magnets in the bar hole 82 discharges, change to other position captive joint again in the bar hole 8, 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 promptly bar hole 8 two ends are unequal with the distance in the center of circle at interior circular rail trace 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, promptly 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 that one 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 arrangement 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, and each permanent magnets 2 that makes rotation is through Hall 3 time, and Hall 3 can produce a cooresponding square wave electric signal output.Hall 3 is Halls.
Rolling disc 1 is provided with centre hole at the interior circular rail trace 5-1 center of these whole permanent magnets 2, and centre hole is used to be enclosed within pedal axis or the runner rotating shaft of morpet to be used.
The rotating disc type sensitive member of embodiment 2, many magnetic patch of high density adjustable positions
Like Fig. 2, a face of the high strength aluminium rolling disc 1 that diameter is 10.0 centimetres is provided with 40 permanent magnets 2 of 0.6 centimetre of diameter.The magnetic flow 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, each permanent magnets 2 that makes rotation is through Hall 3 time, Hall 3 can produce a cooresponding square wave electric signal output.The arc place circle of arc bar hole 8 is a concentric circles with interior circular rail trace 5-1.The structure of other rolling disc 1, permanent magnets 2, Hall 3 is same as embodiment 1.
Claims (9)
1. the rotating disc type sensitive member of many magnetic patch adjustable positions; Comprise a rolling disc (1) and many pieces of permanent magnets (2); It is characterized in that: be set with many pieces of permanent magnets (2) on the rolling disc (1); These many pieces of permanent magnets (2) are distributed in an annular arrangement (6) scope, have at least a circular rail trace to run through whole permanent magnets (2) between the interior circular rail trace (5-1) of annular arrangement (6) and the outer ring trajectory (5-2); Interior circular rail trace (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 spacing to be dislocatedly distributed again arranged promptly;
The radius mode of being dislocatedly distributed is: have at least two permanent magnets (2) inequality to the distance at circle center, interior circular rail trace (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) inequality;
Between interior circular rail trace (5-1) and outer ring trajectory (5-2), have a bar hole (8) at least, 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 promptly 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 flow 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 sensitive member of many magnetic patch adjustable positions according to claim 1 is characterized in that: bar hole (8) is the structure of arc, and the arc place circle of bar hole (8) is a concentric circles with interior circular rail trace (5-1).
3. the rotating disc type sensitive member of many magnetic patch adjustable positions according to claim 1 is characterized in that: bar hole (8) is oblique structure, and promptly bar hole (8) two ends are unequal with the distance in the center of circle at interior circular rail trace (5-1) place respectively.
4. according to the rotating disc type sensitive member of claim 1 or 2 or 3 described many magnetic patch adjustable positions, it is characterized in that: have being uneven in length of a permanent magnets spacing (7) at least in other any one permanent magnets spacing (7).
5. the rotating disc type sensitive member of many magnetic patch adjustable positions according to claim 4 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 sensitive member of many magnetic patch adjustable positions according to claim 4 is characterized in that: bar hole (8) and the connection structure of permanent magnets (2) for discharging.
7. the rotating disc type sensitive member of many magnetic patch adjustable positions according to claim 4 is characterized in that: Hall (3) is located between interior circular rail trace (5-1) and the outer ring trajectory (5-2).
8. the rotating disc type sensitive member of many magnetic patch adjustable positions according to claim 4 is characterized in that: rolling disc (1) is provided with centre hole in the circle scope of interior circular rail trace (5-1) place of a plurality of permanent magnets (2).
9. the rotating disc type sensitive member of many magnetic patch adjustable positions according to claim 4 is characterized in that: rolling disc (1) is plastic flagstone, aluminium plate, copper material plate a certain of non-magnet_conductible material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210263500.5A CN102785740B (en) | 2012-07-28 | 2012-07-28 | Multi-magnetic block position-adjustable turntable sensing element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210263500.5A CN102785740B (en) | 2012-07-28 | 2012-07-28 | Multi-magnetic block position-adjustable turntable sensing element |
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| CN102785740A true CN102785740A (en) | 2012-11-21 |
| CN102785740B CN102785740B (en) | 2014-02-05 |
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| CN201210263500.5A Expired - Fee Related CN102785740B (en) | 2012-07-28 | 2012-07-28 | Multi-magnetic block position-adjustable turntable sensing element |
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| CN103381872A (en) * | 2012-07-28 | 2013-11-06 | 成都宽和科技有限责任公司 | Sensing element with unevenly distributed magnet blocks in shell |
| CN103381873A (en) * | 2012-07-28 | 2013-11-06 | 成都宽和科技有限责任公司 | Sensing element with unevenly distributed magnetic fluxes of magnet blocks in shell |
| CN106394791A (en) * | 2016-10-28 | 2017-02-15 | 昆山朗德森机电科技有限公司 | Variable speed detector and variable speed control method for electric bicycle |
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| US20020020070A1 (en) * | 2000-07-19 | 2002-02-21 | Shuichi Takeuchi | Apparatus for detecting rotational angle |
| US20030177649A1 (en) * | 2000-09-25 | 2003-09-25 | Shigeji Ito | Rotation angle detector |
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| CN103381872A (en) * | 2012-07-28 | 2013-11-06 | 成都宽和科技有限责任公司 | Sensing element with unevenly distributed magnet blocks in shell |
| CN103381873A (en) * | 2012-07-28 | 2013-11-06 | 成都宽和科技有限责任公司 | Sensing element with unevenly distributed magnetic fluxes of magnet blocks in shell |
| CN103381872B (en) * | 2012-07-28 | 2016-02-24 | 成都宽和科技有限责任公司 | The sensitive member of many magnetic patch uneven distribution in housing |
| CN106394791A (en) * | 2016-10-28 | 2017-02-15 | 昆山朗德森机电科技有限公司 | Variable speed detector and variable speed control method for electric bicycle |
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| CN102785740B (en) | 2014-02-05 |
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Effective date of registration: 20171130 Address after: Xiangyu Street Airport Development Zone Road 401120 Chongqing city Yubei District Shuangfeng Bridge No. 15 Building 2 Patentee after: CHONGQING SINYM TECHNOLOGY CO., LTD. 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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