CN104457647A - Fault diagnosing and positioning method for four position sensors of four-phase switch reluctance motor - Google Patents

Fault diagnosing and positioning method for four position sensors of four-phase switch reluctance motor Download PDF

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Publication number
CN104457647A
CN104457647A CN201410749047.8A CN201410749047A CN104457647A CN 104457647 A CN104457647 A CN 104457647A CN 201410749047 A CN201410749047 A CN 201410749047A CN 104457647 A CN104457647 A CN 104457647A
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position transducer
output signal
rising edge
edge pulse
detected
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CN104457647B (en
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陈昊
韩国强
程鹤
王千龙
王青
王星
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China University of Mining and Technology CUMT
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D18/00—Testing or calibrating apparatus or arrangements provided for in groups G01D1/00 - G01D15/00

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Electric Motors In General (AREA)
  • Testing And Monitoring For Control Systems (AREA)

Abstract

The invention discloses a fault diagnosing and positioning method for four position sensors of a four-phase switch reluctance motor. The method is suitable for fault diagnosing and positioning of the four position sensors of the rotating type or linear type switch reluctance motor in four phases or phases of which the number is the multiple of four and of various topological structures. Whether the position sensors break down or not is judged according to the sequence of two adjacent rising edge pulses of output signals of the four position sensors, a fault diagnosis buffering zone is set, incorrect diagnosis is avoided, the faults of the position sensors are positioned by distinguishing the position sensors output signals which the rising edge pulses come from, the fault diagnosing and positioning method can be used for fault diagnosing and positioning of the single position sensor, the two position sensors, the three position sensors and the four position sensors, diagnosing and positioning results are not affected by the speed changes of the constant speed, acceleration, deceleration and the like of the motor, and the diagnosing method is reliable, high in practicability and wide in engineering application value.

Description

Four four, phase switch reluctance motor position transducer fault diagnosis and location methods
Technical field
The present invention relates to a kind of four phase switch reluctance motor position sensor fault diagnosis and location methods, be particularly useful for the fault diagnosis and location of the multiple phase of four and four, various topological structures, rotary or orthoscopic switched reluctance machines four position transducers.
Background technology
In rotary or orthoscopic four phase switch reluctance electric system, conventional two position sensor output signals provide speed to calculate and motor commutation provides foundation, have extremely important effect for rotary or orthoscopic switched reluctance motor system reliability service.But due to the reason such as dust, collision, can there is failure of removal in conventional photo-electric, magneto-electric, electromagnetic position sensor, the loss of position sensor output signal edge pulse after causing trouble.Position transducer breaks down and lost efficacy, and causes switched reluctance machines commutation failure, affects the reliability service of switched reluctance machines, therefore carries out fault diagnosis and location to position transducer of crucial importance.There is provided speed to calculate with four position transducers and motor commutation provides foundation, to the fault freedom of raising four phase switch reluctance electric system and reliability very useful; Traditional method for diagnosing faults based on interval time and be only applicable to switched reluctance machines based on the method for diagnosing faults that edge is caught and travel at the uniform speed state, inapplicable when switched reluctance machines velocity variations is run.How realizing four phase switch reluctance motors at the uniform velocity lower four position transducer fault diagnosis and locations with acceleration and deceleration running status, is the technical matters that current switch reluctance motor system is badly in need of solving.
Summary of the invention
Technical matters: object of the present invention overcomes the weak point in prior art, provides a kind of four phase switch reluctance motor four position transducer fault diagnosis and location methods.
Technical scheme: four phase switch reluctance motor of the present invention, four position transducer fault diagnosis and location methods:
1) phase of output signal of phase of output signal time early than position transducer Q of switch reluctance motor position P is made, phase of output signal time of position transducer Q is early than the phase of output signal of position transducer R, phase of output signal time of position transducer R is early than the phase of output signal of position transducer S, the phase of output signal of position transducer S early than the phase of output signal of position transducer P, adjacent two rising edge pulse P of detector switch reluctance motor position sensor output signal 1with rising edge pulse P 2, rising edge pulse P in time sequencing 1early than rising edge pulse P 2, the spacing of adjacent two rising edge pulse is an interval;
2) if rising edge pulse P 1the output signal of position transducer P detected, rising edge pulse P 2the output signal of position transducer Q detected, or rising edge pulse P 1the output signal of position transducer Q detected, rising edge pulse P 2the output signal of position transducer R detected, or rising edge pulse P 1the output signal of position transducer R detected, rising edge pulse P 2the output signal of position transducer S detected, or rising edge pulse P 1the output signal of position transducer S detected, rising edge pulse P 2the output signal of position transducer P detected, then judge position transducer non-fault;
3) if except step 2) except other situations occur, then judge that position transducer has fault;
4) output signal rising edge to the output signal rising edge of position transducer Q of desired location sensor P be interval 1., the output signal rising edge of position transducer Q fall to the output signal of position transducer R along for interval 2., the output signal of position transducer R is fallen along fall to the output signal of position transducer S along for interval 3., the output signal of position transducer S is fallen along to the output signal rising edge of position transducer P be interval 4.;
5) when position transducer generation low level fault, fault diagnosis cushions an interval; When 4. 2. 1. high level fault occur in interval position transducer, fault diagnosis cushions an interval; When 3. high level fault occurs in interval position transducer, fault diagnosis cushions two intervals;
6) after between failsafe buffer, position sensor fault is positioned:
If rising edge pulse P 1the output signal of position transducer S detected, rising edge pulse P 2the output signal of position transducer Q detected, then judge that position transducer P breaks down; If rising edge pulse P 1the output signal of position transducer P detected, rising edge pulse P 2the output signal of position transducer R detected, then judge that position transducer Q breaks down; If rising edge pulse P 1the output signal of position transducer Q detected, rising edge pulse P 2the output signal of position transducer S detected, then judge that position transducer R breaks down; If rising edge pulse P 1the output signal of position transducer R detected, rising edge pulse P 2the output signal of position transducer P detected, then judge that position transducer S breaks down;
If rising edge pulse P 1the output signal of position transducer S detected, rising edge pulse P 2the output signal of position transducer R detected, then judge that position transducer P and position transducer Q all breaks down; If rising edge pulse P 1the output signal of position transducer P detected, rising edge pulse P 2the output signal of position transducer S detected, then judge that position transducer Q and position transducer R all breaks down; If rising edge pulse P 1the output signal of position transducer Q detected, rising edge pulse P 2the output signal of position transducer P detected, then judge that position transducer R and position transducer S all breaks down; If rising edge pulse P 1the output signal of position transducer R detected, rising edge pulse P 2the output signal of position transducer Q detected, then judge that position transducer S and position transducer P all breaks down;
If rising edge pulse P 1the output signal of position transducer S detected, rising edge pulse P 2the output signal of position transducer Q detected, have again rising edge pulse P 1the output signal of position transducer Q detected, rising edge pulse P 2the output signal of position transducer S detected, then judge that position transducer P and position transducer R all breaks down; If rising edge pulse P 1the output signal of position transducer P detected, rising edge pulse P 2the output signal of position transducer R detected, have again rising edge pulse P 1the output signal of position transducer R detected, rising edge pulse P 2the output signal of position transducer P detected, then judge that position transducer Q and position transducer S all breaks down;
If rising edge pulse P 1the output signal of position transducer S detected, rising edge pulse P 2also the output signal of position transducer S detected, then judge that position transducer P, position transducer Q and position transducer R all break down; If rising edge pulse P 1the output signal of position transducer R detected, rising edge pulse P 2also the output signal of position transducer R detected, then judge that position transducer S, position transducer P and position transducer Q all break down; If rising edge pulse P 1the output signal of position transducer Q detected, rising edge pulse P 2also the output signal of position transducer Q detected, then judge that position transducer R, position transducer S and position transducer P all break down; If rising edge pulse P 1the output signal of position transducer P detected, rising edge pulse P 2also the output signal of position transducer P detected, then judge that position transducer Q, position transducer R and position transducer S all break down;
If can't detect edge pulse all the time, then judge that position transducer P, position transducer Q, position transducer R and position transducer S all break down;
7) adjacent two negative edge pulse P of detector switch reluctance motor position sensor output signal 1with negative edge pulse P 2, repeat above-mentioned steps, diagnose four phase switch reluctance motors, four position transducer faults, and locate the position transducer broken down.
Beneficial effect: owing to have employed technique scheme, the present invention is applicable to the multiple phase of four and four, various topological structures, the fault diagnosis and location of rotary or orthoscopic switched reluctance machines four position transducers, position sensor fault is judged whether by detecting four position sensor output signal rising edge pulse orders, arrange between fault diagnosis buffer zone, avoid the generation of wrong diagnosis, by distinguishing the position sensor output signal that rising edge pulse is originated, position sensor fault is located, be not only applicable to position transducer fault diagnosis and location when four position transducer four phase switch reluctance motors travel at the uniform speed, and be applicable to four position transducer four phase switch reluctance motors and add, position transducer fault diagnosis and location when running slowly, can be used for single position transducer, two position transducers, the fault diagnosis and location of three position transducers and four position transducers, motor at the uniform velocity and accelerate, deceleration uniform velocity change on diagnosis and positioning result without impact, diagnostic method is reliable, practical, there is engineer applied be widely worth.
Accompanying drawing explanation
Fig. 1 is four phase 8/6 structure switch magnetic resistance motor, four position transducer scheme of installations;
Fig. 2 is four phase 8/6 structure switch magnetic resistance motor position transducer fault diagnosis interval division schematic diagram;
Fig. 3 is the fault diagnosis buffering schematic diagram of four phase 8/6 structure switch magnetic resistance motor position transducer generation low level fault;
Fig. 4 is that four phase 8/6 structure switch magnetic resistance motor position transducer high level fault occur in interval fault diagnosis buffering schematic diagram 1.;
Fig. 5 is that four phase 8/6 structure switch magnetic resistance motor position transducer high level fault occur in interval fault diagnosis buffering schematic diagram 2.;
Fig. 6 is that four phase 8/6 structure switch magnetic resistance motor position transducer high level fault occur in interval fault diagnosis buffering schematic diagram 4.;
Fig. 7 is that four phase 8/6 structure switch magnetic resistance motor position transducer high level fault occur in interval fault diagnosis buffering schematic diagram 3.;
Fig. 8 is four phase 8/6 structure switch magnetic resistance motor position transducer P low level fault diagnosis positioning results;
Fig. 9 is four phase 8/6 structure switch magnetic resistance motor position transducer Q low level fault diagnosis positioning results;
Figure 10 is four phase 8/6 structure switch magnetic resistance motor position transducer R low level fault diagnosis positioning results;
Figure 11 is four phase 8/6 structure switch magnetic resistance motor position transducer S low level fault diagnosis positioning results;
Figure 12 is four phase 8/6 structure switch magnetic resistance motor position transducer P and position transducer Q low level fault diagnosis positioning result;
Figure 13 is four phase 8/6 structure switch magnetic resistance motor position transducer Q and position transducer R low level fault diagnosis positioning result;
Figure 14 is four phase 8/6 structure switch magnetic resistance motor position transducer R and position transducer S low level fault diagnosis positioning result;
Figure 15 is four phase 8/6 structure switch magnetic resistance motor position transducer S and position transducer P low level fault diagnosis positioning result;
Figure 16 is four phase 8/6 structure switch magnetic resistance motor position transducer P and position transducer R low level fault diagnosis positioning result;
Figure 17 is four phase 8/6 structure switch magnetic resistance motor position transducer Q and position transducer S low level fault diagnosis positioning result;
Figure 18 is that low level fault diagnosis positioning result all occurs for four phase 8/6 structure switch magnetic resistance motor position transducer P, position transducer Q and position transducer R;
Figure 19 is that low level fault diagnosis positioning result all occurs for four phase 8/6 structure switch magnetic resistance motor position transducer S, position transducer P and position transducer Q;
Figure 20 is that low level fault diagnosis positioning result all occurs for four phase 8/6 structure switch magnetic resistance motor position transducer R, position transducer S and position transducer P;
Figure 21 is that low level fault diagnosis positioning result all occurs for four phase 8/6 structure switch magnetic resistance motor position transducer Q, position transducer R and position transducer S.
Embodiment
Below in conjunction with accompanying drawing, one embodiment of the present of invention are further described:
Figure 1 shows that four phase 8/6 structure switch magnetic resistance motor, four position transducer P, Q, R, S scheme of installation, four position transducer P, Q, R, S setting angle interval angles β is 15 degree, the position sensor output signal produced as shown in Figure 2, early than the phase of output signal of position transducer Q on the phase of output signal time making switch reluctance motor position P, early than the phase of output signal of position transducer R on the phase of output signal time of position transducer Q, early than the phase of output signal of position transducer S on the phase of output signal time of position transducer R, the phase of output signal of position transducer S is early than the phase of output signal of position transducer P, the output signal rising edge of desired location sensor P to the output signal rising edge of position transducer Q be interval 1., the output signal rising edge of position transducer Q fall to the output signal of position transducer R along for interval 2., the output signal of position transducer R is fallen along fall to the output signal of position transducer S along for interval 3., the output signal of position transducer S is fallen along to the output signal rising edge of position transducer P be interval 4..
Adjacent two rising edge pulse P of detector switch reluctance motor position sensor output signal 1with rising edge pulse P 2, rising edge pulse P in time sequencing 1early than rising edge pulse P 2, the spacing of adjacent two rising edge pulse is an interval.
Shown in Fig. 2, if rising edge pulse P 1the output signal of position transducer P detected, rising edge pulse P 2the output signal of position transducer Q detected, or rising edge pulse P 1the output signal of position transducer Q detected, rising edge pulse P 2the output signal of position transducer R detected, or rising edge pulse P 1the output signal of position transducer R detected, rising edge pulse P 2the output signal of position transducer S detected, or rising edge pulse P 1the output signal of position transducer S detected, rising edge pulse P 2the output signal of position transducer P detected, then judge position transducer non-fault; If other situations in addition occur, then judge that position transducer has fault.
When 1., 2., 3., 4. low level fault occurs in interval position transducer P, as shown in Figure 3 a, 3b, 3c, 3d shown in, fault diagnosis cushions an interval; When 4. 2. 1. high level fault occur in interval position transducer P, as shown in Fig. 4, Fig. 5, Fig. 6, fault diagnosis cushions an interval; When 3. high level fault occurs in interval position transducer, as shown in Figure 7, fault diagnosis cushions two intervals.
After between failsafe buffer, position sensor fault is positioned, if rising edge pulse P 1the output signal of position transducer S detected, rising edge pulse P 2the output signal of position transducer Q detected, then judge that low level fault occurs position transducer P, as shown in Figure 8.If rising edge pulse P 1the output signal of position transducer P detected, rising edge pulse P 2the output signal of position transducer R detected, then judge that low level fault occurs position transducer Q, as shown in Figure 9.If rising edge pulse P 1the output signal of position transducer Q detected, rising edge pulse P 2the output signal of position transducer S detected, then judge that low level fault occurs position transducer R, as shown in Figure 10.If rising edge pulse P 1the output signal of position transducer R detected, rising edge pulse P 2the output signal of position transducer P detected, then judge that low level fault occurs position transducer S, as shown in figure 11.
If rising edge pulse P 1the output signal of position transducer S detected, rising edge pulse P 2the output signal of position transducer R detected, then judge that position transducer P and position transducer Q all low level fault occurs, as shown in figure 12.If rising edge pulse P 1the output signal of position transducer P detected, rising edge pulse P 2the output signal of position transducer S detected, then judge that position transducer Q and position transducer R all low level fault occurs, as shown in figure 13.If rising edge pulse P 1the output signal of position transducer Q detected, rising edge pulse P 2the output signal of position transducer P detected, then judge that position transducer R and position transducer S all low level fault occurs, as shown in figure 14.If rising edge pulse P 1the output signal of position transducer R detected, rising edge pulse P 2the output signal of position transducer Q detected, then judge that position transducer S and position transducer P all low level fault occurs, as shown in figure 15.
If rising edge pulse P 1the output signal of position transducer S detected, rising edge pulse P 2the output signal of position transducer Q detected, have again rising edge pulse P 1the output signal of position transducer Q detected, rising edge pulse P 2the output signal of position transducer S detected, then judge that position transducer P and position transducer R all low level fault occurs, as shown in figure 16.If rising edge pulse P 1the output signal of position transducer R detected, rising edge pulse P 2the output signal of position transducer P detected, have again rising edge pulse P 1the output signal of position transducer P detected, rising edge pulse P 2the output signal of position transducer R detected, then judge that position transducer S and the equal low level of position transducer Q break down, as shown in figure 17.
If rising edge pulse P 1the output signal of position transducer S detected, rising edge pulse P 2also the output signal of position transducer S detected, then judge that position transducer P, position transducer Q and position transducer R all low level fault occur, as shown in figure 18.If rising edge pulse P 1the output signal of position transducer R detected, rising edge pulse P 2also the output signal of position transducer R detected, then judge that position transducer S, position transducer P and position transducer Q all low level fault occur, as shown in figure 19.If rising edge pulse P 1the output signal of position transducer Q detected, rising edge pulse P 2also the output signal of position transducer Q detected, then judge that position transducer R, position transducer S and position transducer P all low level fault occur, as shown in figure 20.If rising edge pulse P 1the output signal of position transducer P detected, rising edge pulse P 2also the output signal of position transducer P detected, then judge that position transducer Q, position transducer R and position transducer S all low level fault occur, as shown in figure 21.
If can't detect rising edge pulse all the time, then judge that position transducer P, position transducer Q, position transducer R and position transducer S all low level fault occur.
Adjacent two rising edge pulse P of detector switch reluctance motor position sensor output signal 1with rising edge pulse P 2, repeat above-mentioned steps, diagnose four phase switch reluctance motors, four position transducer generation high level fault, and locate the position transducer broken down.
Adjacent two negative edge pulse P of detector switch reluctance motor position sensor output signal 1with negative edge pulse P 2, repeat above-mentioned steps, diagnose four phase switch reluctance motors, four position transducer generation low level fault or high level fault occurs, and locating the position transducer broken down.
Said method to there being four phase 16/12 structures of four position transducers, the switch reluctance motor position fault diagnosis and location of four phase 32/24 structures is also suitable for.

Claims (1)

1. four phase switch reluctance motors, four position transducer fault diagnosis and location methods, is characterized in that comprising the steps:
1) phase of output signal of phase of output signal time early than position transducer Q of switch reluctance motor position P is made, phase of output signal time of position transducer Q is early than the phase of output signal of position transducer R, phase of output signal time of position transducer R is early than the phase of output signal of position transducer S, the phase of output signal of position transducer S early than the phase of output signal of position transducer P, adjacent two rising edge pulse P of detector switch reluctance motor position sensor output signal 1with rising edge pulse P 2, rising edge pulse P in time sequencing 1early than rising edge pulse P 2, the spacing of adjacent two rising edge pulse is an interval;
2) if rising edge pulse P 1the output signal of position transducer P detected, rising edge pulse P 2the output signal of position transducer Q detected, or rising edge pulse P 1the output signal of position transducer Q detected, rising edge pulse P 2the output signal of position transducer R detected, or rising edge pulse P 1the output signal of position transducer R detected, rising edge pulse P 2the output signal of position transducer S detected, or rising edge pulse P 1the output signal of position transducer S detected, rising edge pulse P 2the output signal of position transducer P detected, then judge position transducer non-fault;
3) if except step 2) except other situations occur, then judge that position transducer has fault;
4) output signal rising edge to the output signal rising edge of position transducer Q of desired location sensor P be interval 1., the output signal rising edge of position transducer Q fall to the output signal of position transducer R along for interval 2., the output signal of position transducer R is fallen along fall to the output signal of position transducer S along for interval 3., the output signal of position transducer S is fallen along to the output signal rising edge of position transducer P be interval 4.;
5) when position transducer generation low level fault, fault diagnosis cushions an interval; When 4. 2. 1. high level fault occur in interval position transducer, fault diagnosis cushions an interval; When 3. high level fault occurs in interval position transducer, fault diagnosis cushions two intervals;
6) after between failsafe buffer, position sensor fault is positioned:
If rising edge pulse P 1the output signal of position transducer S detected, rising edge pulse P 2the output signal of position transducer Q detected, then judge that position transducer P breaks down; If rising edge pulse P 1the output signal of position transducer P detected, rising edge pulse P 2the output signal of position transducer R detected, then judge that position transducer Q breaks down; If rising edge pulse P 1the output signal of position transducer Q detected, rising edge pulse P 2the output signal of position transducer S detected, then judge that position transducer R breaks down; If rising edge pulse P 1the output signal of position transducer R detected, rising edge pulse P 2the output signal of position transducer P detected, then judge that position transducer S breaks down;
If rising edge pulse P 1the output signal of position transducer S detected, rising edge pulse P 2the output signal of position transducer R detected, then judge that position transducer P and position transducer Q all breaks down; If rising edge pulse P 1the output signal of position transducer P detected, rising edge pulse P 2the output signal of position transducer S detected, then judge that position transducer Q and position transducer R all breaks down; If rising edge pulse P 1the output signal of position transducer Q detected, rising edge pulse P 2the output signal of position transducer P detected, then judge that position transducer R and position transducer S all breaks down; If rising edge pulse P 1the output signal of position transducer R detected, rising edge pulse P 2the output signal of position transducer Q detected, then judge that position transducer S and position transducer P all breaks down;
If rising edge pulse P 1the output signal of position transducer S detected, rising edge pulse P 2the output signal of position transducer Q detected, have again rising edge pulse P 1the output signal of position transducer Q detected, rising edge pulse P 2the output signal of position transducer S detected, then judge that position transducer P and position transducer R all breaks down; If rising edge pulse P 1the output signal of position transducer P detected, rising edge pulse P 2the output signal of position transducer R detected, have again rising edge pulse P 1the output signal of position transducer R detected, rising edge pulse P 2the output signal of position transducer P detected, then judge that position transducer Q and position transducer S all breaks down;
If rising edge pulse P 1the output signal of position transducer S detected, rising edge pulse P 2also the output signal of position transducer S detected, then judge that position transducer P, position transducer Q and position transducer R all break down; If rising edge pulse P 1the output signal of position transducer R detected, rising edge pulse P 2also the output signal of position transducer R detected, then judge that position transducer S, position transducer P and position transducer Q all break down; If rising edge pulse P 1the output signal of position transducer Q detected, rising edge pulse P 2also the output signal of position transducer Q detected, then judge that position transducer R, position transducer S and position transducer P all break down; If rising edge pulse P 1the output signal of position transducer P detected, rising edge pulse P 2also the output signal of position transducer P detected, then judge that position transducer Q, position transducer R and position transducer S all break down;
If can't detect edge pulse all the time, then judge that position transducer P, position transducer Q, position transducer R and position transducer S all break down;
7) adjacent two negative edge pulse P of detector switch reluctance motor position sensor output signal 1with negative edge pulse P 2, repeat above-mentioned steps, diagnose four phase switch reluctance motors, four position transducer faults, and locate the position transducer broken down.
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CN201410749047.8A CN104457647B (en) 2014-12-08 2014-12-08 Fault diagnosing and positioning method for four position sensors of four-phase switch reluctance motor
AU2015360193A AU2015360193B2 (en) 2014-12-08 2015-11-30 Trouble-shooting and fault-locating method for four position sensors of four-phase switched reluctance motor
PCT/CN2015/095895 WO2016091092A1 (en) 2014-12-08 2015-11-30 Trouble-shooting and fault-locating method for four position sensors of four-phase switched reluctance motor

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CN106301136A (en) * 2016-09-06 2017-01-04 中国矿业大学 A kind of switched reluctance machines method for reconstructing phase current with fault tolerance
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CN103414408A (en) * 2013-08-12 2013-11-27 太原理工大学 Method for on-line fault diagnosis and fault-tolerant control of position signals of switch reluctance motor
CN103472263A (en) * 2013-09-03 2013-12-25 清华大学 Fault diagnosing method for hall sensor of permanent magnet synchronous motor

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WO2016091092A1 (en) * 2014-12-08 2016-06-16 中国矿业大学 Trouble-shooting and fault-locating method for four position sensors of four-phase switched reluctance motor
CN106338264A (en) * 2016-08-19 2017-01-18 江苏大学 Fault diagnosis method for switch reluctance BSG position sensor used for hybrid power vehicle
CN106338264B (en) * 2016-08-19 2018-08-21 江苏大学 The method for diagnosing faults of hybrid vehicle switching magnetic-resistance BSG position sensors
CN106301136A (en) * 2016-09-06 2017-01-04 中国矿业大学 A kind of switched reluctance machines method for reconstructing phase current with fault tolerance
CN106301136B (en) * 2016-09-06 2019-05-31 中国矿业大学 A kind of switched reluctance machines method for reconstructing phase current with fault tolerance
CN111272104A (en) * 2019-11-21 2020-06-12 中国科学院国家天文台南京天文光学技术研究所 Method suitable for automatically shielding position sensor fault reading head in extreme environment
CN113670342A (en) * 2021-09-22 2021-11-19 成都金智联科科技有限责任公司 Valve opening degree measuring device, measuring method and opening and closing direction judging method

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