CN103206916B - A kind of signal acquisition method with V-notch revolving meber rotational angle - Google Patents
A kind of signal acquisition method with V-notch revolving meber rotational angle Download PDFInfo
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Abstract
A kind of signal acquisition method with V-notch revolving meber rotational angle, the V-notch region of setting V-notch revolving meber (5) is called blind area (3), the outer diameter side of V-notch revolving meber is pasted magnetic grid scale (2), magnetic grid scale marking has scale mark, at the other main steady arm of the balanced configuration (4) of magnetic grid scale and auxiliary steady arm (8), main magnetic induction sensor (1) fixed by main steady arm, auxiliary magnetic induction sensor (7) fixed by auxiliary steady arm, main magnetic induction sensor and auxiliary magnetic induction sensor form 180 ° of balanced configurations, the magnetic induction sensor with complementation carries out signals collecting to the magnetic grid scale be pasted onto on V-notch revolving meber, thus solve the rotational angle monitoring of V-notch revolving meber, signals collecting accurately and reliably, to the rotational angle of computing machine control cincture V-notch revolving meber, there is very large synergism, especially for super-huge and need rotational angle to be with its meaning of V-notch revolving meber more far-reaching accurately.
Description
Technical field
The invention belongs to rotational angle monitoring technical field, especially a kind of signal acquisition method with V-notch revolving meber rotational angle.
Background technology
Along with the high speed development of machinery industry, more and more higher to the rotational angle accuracy requirement of band V-notch revolving meber.Monitoring the rotational angle of full circle revolving meber is that circle magnetic grid is sleeved on the outer ring of full circle revolving meber, a magnetic induction sensor is adopted to monitor circle magnetic grid, and for band V-notch revolving meber, owing to cannot install whole circle circle magnetic grid at V-notch place, magnetic induction sensor just can not detect the rotational angle at V-notch place, therefore alternate manner must be taked to solve the rotational angle monitoring of band V-notch revolving meber, be with the signal acquisition method of V-notch revolving meber rotational angle to have no relevant report up to now.
Summary of the invention
For solving the rotational angle monitoring problem of band V-notch revolving meber, the invention provides a kind of signal acquisition method with V-notch revolving meber rotational angle, this signal acquisition method is by two balanced configurations and the magnetic induction sensor with complementation carries out signals collecting to the magnetic grid scale be pasted onto on band V-notch revolving meber, thus solve the rotational angle monitoring of band V-notch revolving meber, signals collecting accurately and reliably, has very large synergism to the rotational angle of computing machine control cincture V-notch revolving meber.
For achieving the above object, the present invention adopts following technical scheme:
With a signal acquisition method for V-notch revolving meber rotational angle, the V-notch region of setting V-notch revolving meber is called blind area, and the region except blind area is called effective district, and the external diameter girth in described effective district is set as L
1, the external diameter girth of blind area is set as L
2, L
1+ L
2=L, L are the external diameter overall circumferences of V-notch revolving meber, count: L from the center of rotation of V-notch revolving meber
1corresponding fan angle > 180 °, L
2corresponding fan angle < 180 °, turning circle=360 ° corresponding to L, assuming that L
1corresponding fan angle=270 °, then L
2corresponding fan angle=90 °, it is L that the outer diameter side in described effective district is pasted with girth
1magnetic grid scale, magnetic grid scale is marked with scale mark, angle corresponding between adjacent described scale mark is 0.1 °, through 0.1 ° from 0 °, 0.2 ° ... 269.8 °, 269.9 ° to 270 ° only, at the other main steady arm of balanced configuration of magnetic grid scale and auxiliary steady arm, main magnetic induction sensor fixed by main steady arm, auxiliary magnetic induction sensor fixed by auxiliary steady arm, main magnetic induction sensor and auxiliary magnetic induction sensor form 180 ° of balanced configurations, when no matter V-notch revolving meber is in aircraft gate or turning stopping bit around axle center, there are following three kinds of situations in the position of main magnetic induction sensor magnetic grid scale relative to auxiliary magnetic induction sensor:
(1) when described aircraft gate, main magnetic induction sensor and auxiliary magnetic induction sensor correspond to magnetic grid scale simultaneously, and when described turning stopping bit: 1. or main magnetic induction sensor and auxiliary magnetic induction sensor correspond to magnetic grid scale simultaneously, 2. or main magnetic induction sensor correspond to magnetic grid scale and auxiliary magnetic induction sensor and correspond to blind area, 3. or main magnetic induction sensor correspond to blind area and auxiliary magnetic induction sensor corresponds to magnetic grid scale;
(2) when described aircraft gate, main magnetic induction sensor corresponds to magnetic grid scale and auxiliary magnetic induction sensor and corresponds to blind area, and when described turning stopping bit: 1. or main magnetic induction sensor and auxiliary magnetic induction sensor correspond to magnetic grid scale simultaneously, 2. or main magnetic induction sensor correspond to magnetic grid scale and auxiliary magnetic induction sensor and correspond to blind area, 3. or main magnetic induction sensor correspond to blind area and auxiliary magnetic induction sensor corresponds to magnetic grid scale;
(3) when described aircraft gate, main magnetic induction sensor corresponds to blind area and auxiliary magnetic induction sensor and corresponds to magnetic grid scale; and when described turning stopping bit: 1. or main magnetic induction sensor and auxiliary magnetic induction sensor correspond to magnetic grid scale simultaneously; 2. or main magnetic induction sensor correspond to magnetic grid scale and auxiliary magnetic induction sensor and correspond to blind area, 3. or main magnetic induction sensor correspond to blind area and auxiliary magnetic induction sensor corresponds to magnetic grid scale.
Feature of the present invention is:
During for above-mentioned described aircraft gate (1), first main magnetic induction sensor is gathered to the described scale mark detected by magnetic grid scale as the first main signal and inputs in computing machine and store, auxiliary magnetic induction sensor is gathered to the described scale mark detected by magnetic grid scale as the first auxiliary signal and inputs in computing machine simultaneously and store; During for above-mentioned described turning stopping bit (1):
If run into 1., main magnetic induction sensor gathers to the described scale mark detected by magnetic grid scale as the second main signal and inputs in computing machine and stores, and auxiliary magnetic induction sensor is gathered to the described scale mark detected by magnetic grid scale as the second auxiliary signal and inputs in computing machine store, first main signal and the second main signal are carried out contrast computing or the first auxiliary signal and the second auxiliary signal are carried out contrast computing by computing machine, the absolute value difference that first main signal deducts the second main signal is exactly the leading role degree of V-notch revolving meber around axis rotation, the absolute value difference that first auxiliary signal deducts the second auxiliary signal is also the explement degree of V-notch revolving meber around axis rotation.
If run into 2., main magnetic induction sensor gathers to the described scale mark detected by magnetic grid scale as the 3rd main signal and inputs in computing machine and stores, and auxiliary magnetic induction sensor can not collection signal owing to meeting with blind area, first main signal and the 3rd main signal are carried out contrast computing by computing machine, and the absolute value difference that the first main signal deducts the 3rd main signal is exactly the angle of V-notch revolving meber around axis rotation.
If run into 3., because main magnetic induction sensor meets with blind area and can not collection signal, then auxiliary magnetic induction sensor gathers to the described scale mark detected by magnetic grid scale as the 3rd auxiliary signal and inputs in computing machine and stores, first auxiliary signal and the 3rd auxiliary signal are carried out contrast computing by computing machine, and the absolute value difference that the first auxiliary signal deducts the 3rd auxiliary signal is exactly the angle of V-notch revolving meber around axis rotation.
During for above-mentioned described aircraft gate (2), main magnetic induction sensor is gathered to the described scale mark detected by magnetic grid scale as the 4th main signal and inputs in computing machine store; During for above-mentioned described turning stopping bit (2):
1. or 2. if run into, main magnetic induction sensor gathers to the described scale mark detected by magnetic grid scale as the 5th main signal and inputs in computing machine and stores, 4th main signal and the 5th main signal are carried out contrast computing by computing machine, and the absolute value difference that the 4th main signal deducts the 5th main signal is exactly the angle of V-notch revolving meber around axis rotation.
If run into 3., auxiliary magnetic induction sensor is gathered to the described scale mark detected by magnetic grid scale as the 4th auxiliary signal and inputted in computing machine and stores, computing machine is made main difference calculating by the difference of the 4th main signal to blind area and makes auxiliary difference calculating to blind area to the difference of the 4th auxiliary signal, and described main difference+described auxiliary difference is exactly the angle of V-notch revolving meber around axis rotation.
During for above-mentioned described aircraft gate (3), auxiliary magnetic induction sensor is gathered to the described scale mark detected by magnetic grid scale as the 5th auxiliary signal and inputs in computing machine store; During for above-mentioned described turning stopping bit (2):
1. or 3. if run into, auxiliary magnetic induction sensor gathers to the described scale mark detected by magnetic grid scale as the 6th auxiliary signal and inputs in computing machine and stores, 5th auxiliary signal and the 6th auxiliary signal are carried out contrast computing by computing machine, and the absolute value difference that the 5th auxiliary signal deducts the 6th auxiliary signal is exactly the angle of V-notch revolving meber around axis rotation.
If run into 2., main magnetic induction sensor is gathered to the described scale mark detected by magnetic grid scale as the 6th main signal and inputted in computing machine and stores, computing machine is made auxiliary difference calculating by the difference of the 5th auxiliary signal to blind area and makes main difference calculating to blind area to the difference of the 6th main signal, and described auxiliary difference+described main difference is exactly the angle of V-notch revolving meber around axis rotation.
Owing to adopting technical scheme described above, the present invention produces following good effect:
1, on the outer diameter side of band V-notch revolving meber, paste magnetic grid scale, magnetic grid scale is marked with scale mark, the precise signal collection of main magnetic induction sensor and auxiliary magnetic induction sensor can be realized.
2, only just will need can be realized the fine rotational of band V-notch revolving meber by the simple operation of computing machine in the signal collected input computing machine, rotational angle is controllable and measurable.
3, the rotational angle due to band V-notch revolving meber is controllable and measurable, saves manufacturing cost to great revolving meber.
4, the invention solves the rotational angle monitoring of band V-notch revolving meber, signals collecting accurately and reliably, has very large synergism to the rotational angle of computing machine control cincture V-notch revolving meber.
Accompanying drawing explanation
Fig. 1 is mounting arrangement schematic diagram of the present invention.
In Fig. 1: the main magnetic induction sensor of 1-; 2-magnetic grid scale; 3-blind area; The main steady arm of 4-; 5-V v notch v revolving meber; 6-axle center; The auxiliary magnetic induction sensor of 7-; The auxiliary steady arm of 8-.
Embodiment
The present invention is a kind of signal acquisition method with V-notch revolving meber rotational angle, this signal acquisition method is by two balanced configurations and the magnetic induction sensor with complementation carries out signals collecting to the magnetic grid scale be pasted onto on band V-notch revolving meber, thus solve the rotational angle monitoring of band V-notch revolving meber, signals collecting accurately and reliably, to the rotational angle of computing machine control cincture V-notch revolving meber, there is very large synergism, especially for super-huge and need rotational angle to be with V-notch revolving meber accurately, its meaning is more far-reaching.
Can explain the present invention in more detail by the following examples, the present invention is not limited to the following examples, discloses object of the present invention and is intended to protect all changes and improvements in the scope of the invention.
The V-notch region of setting V-notch revolving meber 5 is called blind area 3, and the region except blind area 3 is called effective district, and the external diameter girth in described effective district is set as L
1, the external diameter girth of blind area 3 is set as L
2, L
1+ L
2=L, L are the external diameter overall circumferences of V-notch revolving meber 5, count: L from the center of rotation 6 of V-notch revolving meber 5
1corresponding fan angle > 180 °, L
2corresponding fan angle < 180 °, turning circle=360 ° corresponding to L, composition graphs 1, assuming that L
1corresponding fan angle=270 °, then L
2corresponding fan angle=90 °, it is L that the outer diameter side in described effective district is pasted with girth
1magnetic grid scale 2, magnetic grid scale 2 is marked with scale mark, angle corresponding between adjacent described scale mark is 0.1 °, through 0.1 ° from 0 °, 0.2 ° ... 269.8 °, 269.9 ° to 270 ° only, 0.01 ° can also be sub-divided into the angle of super-huge its correspondence of band V-notch revolving meber, at the main steady arm of the other balanced configuration of magnetic grid scale 24 and auxiliary steady arm 8, main magnetic induction sensor 1 fixed by main steady arm 4, auxiliary magnetic induction sensor 7 fixed by auxiliary steady arm 8, main magnetic induction sensor 1 and auxiliary magnetic induction sensor 7 form 180 ° of balanced configurations, when no matter V-notch revolving meber 5 is in aircraft gate or turning stopping bit around axle center 6, described aircraft gate refers to the original parking spot of V-notch revolving meber, described turning stopping bit refers to the parking spot of V-notch revolving meber after rotating a certain angle, there are following three kinds of situations in the position of main magnetic induction sensor 1 magnetic grid scale 2 relative to auxiliary magnetic induction sensor 8:
(1) when described aircraft gate, main magnetic induction sensor and auxiliary magnetic induction sensor correspond to magnetic grid scale simultaneously, and when described turning stopping bit: 1. or main magnetic induction sensor and auxiliary magnetic induction sensor correspond to magnetic grid scale simultaneously, 2. or main magnetic induction sensor correspond to magnetic grid scale and auxiliary magnetic induction sensor and correspond to blind area, 3. or main magnetic induction sensor correspond to blind area and auxiliary magnetic induction sensor corresponds to magnetic grid scale;
(2) when described aircraft gate, main magnetic induction sensor corresponds to magnetic grid scale and auxiliary magnetic induction sensor and corresponds to blind area, and when described turning stopping bit: 1. or main magnetic induction sensor and auxiliary magnetic induction sensor correspond to magnetic grid scale simultaneously, 2. or main magnetic induction sensor correspond to magnetic grid scale and auxiliary magnetic induction sensor and correspond to blind area, 3. or main magnetic induction sensor correspond to blind area and auxiliary magnetic induction sensor corresponds to magnetic grid scale;
(3) when described aircraft gate, main magnetic induction sensor corresponds to blind area and auxiliary magnetic induction sensor and corresponds to magnetic grid scale, and when described turning stopping bit: 1. or main magnetic induction sensor and auxiliary magnetic induction sensor correspond to magnetic grid scale simultaneously, 2. or main magnetic induction sensor correspond to magnetic grid scale and auxiliary magnetic induction sensor and correspond to blind area, 3. or main magnetic induction sensor correspond to blind area and auxiliary magnetic induction sensor corresponds to magnetic grid scale;
Feature of the present invention is:
During for above-mentioned described aircraft gate (1), first main magnetic induction sensor is gathered to the described scale mark detected by magnetic grid scale as the first main signal and inputs in computing machine and store, auxiliary magnetic induction sensor is gathered to the described scale mark detected by magnetic grid scale as the first auxiliary signal and inputs in computing machine simultaneously and store; During for above-mentioned described turning stopping bit (1):
If run into 1., main magnetic induction sensor gathers to the described scale mark detected by magnetic grid scale as the second main signal and inputs in computing machine and stores, and auxiliary magnetic induction sensor is gathered to the described scale mark detected by magnetic grid scale as the second auxiliary signal and inputs in computing machine store, first main signal and the second main signal are carried out contrast computing or the first auxiliary signal and the second auxiliary signal are carried out contrast computing by computing machine, the absolute value difference that first main signal deducts the second main signal is exactly the leading role degree of V-notch revolving meber around axis rotation, the absolute value difference that first auxiliary signal deducts the second auxiliary signal is also the explement degree of V-notch revolving meber around axis rotation, now described leading role's degree=described explement degree, main magnetic induction sensor exists as main collection signal, auxiliary magnetic induction sensor as a comparison collection signal exists.
If run into 2., main magnetic induction sensor gathers to the described scale mark detected by magnetic grid scale as the 3rd main signal and inputs in computing machine and stores, and auxiliary magnetic induction sensor can not collection signal owing to meeting with blind area, first main signal and the 3rd main signal are carried out contrast computing by computing machine, and the absolute value difference that the first main signal deducts the 3rd main signal is exactly the angle of V-notch revolving meber around axis rotation.
If run into 3., because main magnetic induction sensor meets with blind area and can not collection signal, then auxiliary magnetic induction sensor gathers to the described scale mark detected by magnetic grid scale as the 3rd auxiliary signal and inputs in computing machine and stores, first auxiliary signal and the 3rd auxiliary signal are carried out contrast computing by computing machine, and the absolute value difference that the first auxiliary signal deducts the 3rd auxiliary signal is exactly the angle of V-notch revolving meber around axis rotation.
During for above-mentioned described aircraft gate (2), main magnetic induction sensor is gathered to the described scale mark detected by magnetic grid scale as the 4th main signal and inputs in computing machine store; During for above-mentioned described turning stopping bit (2):
1. or 2. if run into, main magnetic induction sensor gathers to the described scale mark detected by magnetic grid scale as the 5th main signal and inputs in computing machine and stores, 4th main signal and the 5th main signal are carried out contrast computing by computing machine, the absolute value difference that 4th main signal deducts the 5th main signal is exactly the angle of V-notch revolving meber around axis rotation, now only has main magnetic induction sensor to play the effect of independent collection signal.
If run into 3., auxiliary magnetic induction sensor is gathered to the described scale mark detected by magnetic grid scale as the 4th auxiliary signal and inputted in computing machine and stores, computing machine is made main difference calculating by the difference of the 4th main signal to blind area and makes auxiliary difference calculating to blind area to the difference of the 4th auxiliary signal, described main difference+described auxiliary difference is exactly the angle of V-notch revolving meber around axis rotation, and now main magnetic induction sensor and auxiliary magnetic induction sensor will carry out complementation to collection signal.
During for above-mentioned described aircraft gate (3), auxiliary magnetic induction sensor is gathered to the described scale mark detected by magnetic grid scale as the 5th auxiliary signal and inputs in computing machine store; During for above-mentioned described turning stopping bit (2):
1. or 3. if run into, auxiliary magnetic induction sensor gathers to the described scale mark detected by magnetic grid scale as the 6th auxiliary signal and inputs in computing machine and stores, 5th auxiliary signal and the 6th auxiliary signal are carried out contrast computing by computing machine, the absolute value difference that 5th auxiliary signal deducts the 6th auxiliary signal is exactly the angle of V-notch revolving meber around axis rotation, now only has auxiliary magnetic induction sensor to play the effect of independent collection signal.
If run into 2., main magnetic induction sensor is gathered to the described scale mark detected by magnetic grid scale as the 6th main signal and inputted in computing machine and stores, computing machine is made auxiliary difference calculating by the difference of the 5th auxiliary signal to blind area and makes main difference calculating to blind area to the difference of the 6th main signal, described auxiliary difference+described main difference is exactly the angle of V-notch revolving meber around axis rotation, and now main magnetic induction sensor and auxiliary magnetic induction sensor will carry out complementation to collection signal.
Just can be realized the fine rotational of band V-notch revolving meber by the simple operation of computing machine in the above-mentioned various signals input computing machines collected, rotational angle can be accomplished controllable and measurable.
The embodiment selected in this article in order to open object of the present invention, currently thinks to be suitable for, but it is to be understood that the present invention is intended to comprise all changes belonging to the embodiment in this design and the scope of the invention and improvement.
Claims (1)
1. the signal acquisition method with V-notch revolving meber rotational angle, the V-notch region of setting V-notch revolving meber (5) is called blind area (3), region except blind area (3) is called effective district, and the external diameter girth in described effective district is set as L
1, the external diameter girth of blind area is set as L
2, L
1+ L
2=L, L are the external diameter overall circumferences of V-notch revolving meber (5), count: L from the center of rotation (6) of V-notch revolving meber (5)
1corresponding fan angle > 180 °, L
2corresponding fan angle < 180 °, turning circle=360 ° corresponding to L, it is L that the outer diameter side in described effective district is pasted with girth
1magnetic grid scale (2), (2) are marked with scale mark with magnetic grid scale, angle corresponding between adjacent described scale mark is 0.1 °, at the other main steady arm of the balanced configuration (4) of magnetic grid scale (2) and auxiliary steady arm (8), main magnetic induction sensor (1) fixed by main steady arm (4), auxiliary magnetic induction sensor (7) fixed by auxiliary steady arm (8), main magnetic induction sensor (1) and auxiliary magnetic induction sensor (7) form 180 ° of balanced configurations, when no matter V-notch revolving meber (5) is in aircraft gate or turning stopping bit around axle center (6), there are three kinds of situations in the position of main magnetic induction sensor (1) magnetic grid scale (2) relative to auxiliary magnetic induction sensor (7):
A () main magnetic induction sensor and auxiliary magnetic induction sensor when being in described aircraft gate corresponds to magnetic grid scale simultaneously, and when being in described turning stopping bit: 1. or main magnetic induction sensor and auxiliary magnetic induction sensor correspond to magnetic grid scale simultaneously, 2. or main magnetic induction sensor correspond to magnetic grid scale and auxiliary magnetic induction sensor and correspond to blind area, 3. or main magnetic induction sensor correspond to blind area and auxiliary magnetic induction sensor corresponds to magnetic grid scale;
B () main magnetic induction sensor when being in described aircraft gate corresponds to magnetic grid scale and auxiliary magnetic induction sensor corresponds to blind area, and when being in described turning stopping bit: 1. or main magnetic induction sensor and auxiliary magnetic induction sensor correspond to magnetic grid scale simultaneously, 2. or main magnetic induction sensor correspond to magnetic grid scale and auxiliary magnetic induction sensor and correspond to blind area, 3. or main magnetic induction sensor correspond to blind area and auxiliary magnetic induction sensor corresponds to magnetic grid scale;
C () main magnetic induction sensor when being in described aircraft gate corresponds to blind area and auxiliary magnetic induction sensor corresponds to magnetic grid scale, and when being in described turning stopping bit: 1. or main magnetic induction sensor and auxiliary magnetic induction sensor correspond to magnetic grid scale simultaneously, 2. or main magnetic induction sensor correspond to magnetic grid scale and auxiliary magnetic induction sensor and correspond to blind area, 3. or main magnetic induction sensor correspond to blind area and auxiliary magnetic induction sensor corresponds to magnetic grid scale;
It is characterized in that:
During described aircraft gate for above-mentioned situation (a), first main magnetic induction sensor is gathered to the described scale mark detected by magnetic grid scale as the first main signal and inputs in computing machine and store, auxiliary magnetic induction sensor is gathered to the described scale mark detected by magnetic grid scale as the first auxiliary signal and inputs in computing machine simultaneously and store; And when described turning stopping bit for above-mentioned situation (a):
If run into 1., main magnetic induction sensor gathers to the described scale mark detected by magnetic grid scale as the second main signal and inputs in computing machine and stores, and auxiliary magnetic induction sensor is gathered to the described scale mark detected by magnetic grid scale as the second auxiliary signal and inputs in computing machine store, first main signal and the second main signal are carried out contrast computing or the first auxiliary signal and the second auxiliary signal are carried out contrast computing by computing machine, the absolute value difference that first main signal deducts the second main signal is exactly the leading role degree of V-notch revolving meber around axis rotation, the absolute value difference that first auxiliary signal deducts the second auxiliary signal is also the explement degree of V-notch revolving meber around axis rotation,
If run into 2., main magnetic induction sensor gathers to the described scale mark detected by magnetic grid scale as the 3rd main signal and inputs in computing machine and stores, and auxiliary magnetic induction sensor can not collection signal owing to meeting with blind area, first main signal and the 3rd main signal are carried out contrast computing by computing machine, and the absolute value difference that the first main signal deducts the 3rd main signal is exactly the angle of V-notch revolving meber around axis rotation;
If run into 3., because main magnetic induction sensor meets with blind area and can not collection signal, then auxiliary magnetic induction sensor gathers to the described scale mark detected by magnetic grid scale as the 3rd auxiliary signal and inputs in computing machine and stores, first auxiliary signal and the 3rd auxiliary signal are carried out contrast computing by computing machine, and the absolute value difference that the first auxiliary signal deducts the 3rd auxiliary signal is exactly the angle of V-notch revolving meber around axis rotation;
During described aircraft gate for above-mentioned situation (b), main magnetic induction sensor is gathered to the described scale mark detected by magnetic grid scale as the 4th main signal and inputs in computing machine store; And when described turning stopping bit for above-mentioned situation (b):
1. or 2. if run into, main magnetic induction sensor gathers to the described scale mark detected by magnetic grid scale as the 5th main signal and inputs in computing machine and stores, 4th main signal and the 5th main signal are carried out contrast computing by computing machine, and the absolute value difference that the 4th main signal deducts the 5th main signal is exactly the angle of V-notch revolving meber around axis rotation;
If run into 3., auxiliary magnetic induction sensor is gathered to the described scale mark detected by magnetic grid scale as the 4th auxiliary signal and inputted in computing machine and stores, computing machine is made main difference calculating by the difference of the 4th main signal to blind area and makes auxiliary difference calculating to blind area to the difference of the 4th auxiliary signal, and it is exactly the angle of V-notch revolving meber around axis rotation that described main difference adds described auxiliary difference;
During described aircraft gate for above-mentioned situation (c), auxiliary magnetic induction sensor is gathered to the described scale mark detected by magnetic grid scale as the 5th auxiliary signal and inputs in computing machine store; And when described turning stopping bit for above-mentioned situation (c):
1. or 3. if run into, auxiliary magnetic induction sensor gathers to the described scale mark detected by magnetic grid scale as the 6th auxiliary signal and inputs in computing machine and stores, 5th auxiliary signal and the 6th auxiliary signal are carried out contrast computing by computing machine, and the absolute value difference that the 5th auxiliary signal deducts the 6th auxiliary signal is exactly the angle of V-notch revolving meber around axis rotation;
If run into 2., main magnetic induction sensor is gathered to the described scale mark detected by magnetic grid scale as the 6th main signal and inputted in computing machine and stores, computing machine is made auxiliary difference calculating by the difference of the 5th auxiliary signal to blind area and makes main difference calculating to blind area to the difference of the 6th main signal, and it is exactly the angle of V-notch revolving meber around axis rotation that described auxiliary difference adds described main difference.
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