WO2016091092A1 - 四相开关磁阻电机四只位置传感器故障诊断与定位方法 - Google Patents

四相开关磁阻电机四只位置传感器故障诊断与定位方法 Download PDF

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WO2016091092A1
WO2016091092A1 PCT/CN2015/095895 CN2015095895W WO2016091092A1 WO 2016091092 A1 WO2016091092 A1 WO 2016091092A1 CN 2015095895 W CN2015095895 W CN 2015095895W WO 2016091092 A1 WO2016091092 A1 WO 2016091092A1
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position sensor
output signal
rising edge
detects
edge pulse
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PCT/CN2015/095895
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English (en)
French (fr)
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陈昊
韩国强
程鹤
王千龙
王青
王星
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中国矿业大学
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Priority to AU2015360193A priority Critical patent/AU2015360193B2/en
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    • 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
    • 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

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  • the invention relates to a fault diagnosis and positioning method for a four-phase switched reluctance motor position sensor, and is particularly suitable for fault diagnosis of four position sensors of four and four multiple phases, multiple topologies, rotary or linear switched reluctance motors. With positioning.
  • Using four position sensors to provide speed calculation and motor commutation provide a basis for improving the fault-tolerant performance and reliability of four-phase switched reluctance motor system; traditional interval-based fault diagnosis method and edge-based capture fault diagnosis method It is only applicable to the constant-speed operation of the switched reluctance motor. It is not applicable when the speed of the switched reluctance motor is running. How to realize the fault diagnosis and positioning of the four position sensors under the uniform speed and acceleration/deceleration operation of the four-phase switched reluctance motor is an urgent technical problem to be solved in the current switched reluctance motor system.
  • the object of the present invention overcomes the deficiencies in the prior art, and provides a method for fault diagnosis and location of four position sensors of a four-phase switched reluctance motor.
  • the output signal phase time of the switched reluctance motor position sensor P is earlier than the output signal phase of the position sensor Q, the output signal phase time of the position sensor Q is earlier than the output signal phase of the position sensor R, and the output signal phase of the position sensor R
  • the time is earlier than the phase of the output signal of the position sensor S, the phase of the output signal of the position sensor S is earlier than the phase of the output signal of the position sensor P, and the adjacent two rising edge pulses P 1 and rising edges of the output signal of the switched reluctance motor position sensor are detected.
  • Pulse P 2 the chronologically rising edge pulse P 1 is earlier than the rising edge pulse P 2 , and the interval between adjacent two rising edge pulses is an interval;
  • the rising edge pulse P 1 detects the output signal of the position sensor P
  • the rising edge pulse P 2 detects the output signal of the position sensor Q
  • the rising edge pulse P 1 detects the output signal of the position sensor Q
  • the rising edge pulse P 2 the output signal of the position sensor output signals R
  • the rising edge of the pulse P 1 or position sensor R detects the rising edge of the pulse P 2 to the output signal of the position detecting sensor S, or the rising edge of the pulse P 1 detected by the position sensor S
  • the output signal, the rising edge pulse P 2 detects the output signal of the position sensor P, and determines that the position sensor has no fault
  • step 2) If other conditions than step 2) occur, it is judged that the position sensor is faulty;
  • the fault diagnosis buffer When the position sensor has a low level fault, the fault diagnosis buffers an interval; when the position sensor has a high level fault in the interval 124, the fault diagnosis buffers an interval; when the position sensor has a high level fault in the interval 3, Fault diagnosis buffers two intervals;
  • the rising edge pulse P 1 detects the output signal of the position sensor S, and the rising edge pulse P 2 detects the output signal of the position sensor Q, it is determined that the position sensor P has failed; if the rising edge pulse P 1 detects the output of the position sensor P The signal, the rising edge pulse P 2 detects the output signal of the position sensor R, and determines that the position sensor Q has failed; if the rising edge pulse P 1 detects the output signal of the position sensor Q, the rising edge pulse P 2 detects the position sensor S.
  • the position sensor R When the signal is output, it is judged that the position sensor R is faulty; if the rising edge pulse P 1 detects the output signal of the position sensor R, and the rising edge pulse P 2 detects the output signal of the position sensor P, it is determined that the position sensor S has failed;
  • the rising edge pulse P 1 detects the output signal of the position sensor S, and the rising edge pulse P 2 detects the output signal of the position sensor R, it is determined that both the position sensor P and the position sensor Q are faulty; if the rising edge pulse P 1 is detected P is the output signal of the position sensor, the rising edge of the pulse P 2 to the output signal of the position detecting sensor S, the position sensor determines the position sensor Q and R it fail; P.
  • the rising edge pulse P 1 detects the output signal of the position sensor S
  • the rising edge pulse P 2 detects the output signal of the position sensor Q
  • the rising edge pulse P 1 detects the output signal of the position sensor Q
  • the rising edge pulse P 2 detects the output signal of the position sensor R
  • the rising edge pulse P 1 detects the output signal of the position sensor R
  • the rising edge pulse P 2 detects the output signal of the position sensor P, and judges that both the position sensor Q and the position sensor S are faulty
  • the rising edge pulse P 1 detects the output signal of the position sensor S, and the rising edge pulse P 2 also detects the output signal of the position sensor S, it is determined that the position sensor P, the position sensor Q and the position sensor R both fail; if the rising edge The pulse P 1 detects the output signal of the position sensor R, and the rising edge pulse P 2 also detects the output signal of the position sensor R, and judges that the position sensor S, the position sensor P and the position sensor Q both fail; if the rising edge pulse P 1 When the output signal of the position sensor Q is detected, and the rising edge pulse P 2 also detects the output signal of the position sensor Q, it is determined that the position sensor R, the position sensor S and the position sensor P both fail; if the rising edge pulse P 1 detects the position When the output signal of the sensor P, the rising edge pulse P 2 also detects the output signal of the position sensor P, it is determined that the position sensor Q, the position sensor R and the position sensor S both fail;
  • the present invention is applicable to fault diagnosis and positioning of four position sensors of four and four multiple phases, multiple topologies, rotary or linear switched reluctance motors, and detects four positions by detecting four positions
  • the rising edge of the sensor output signal determines whether there is a position sensor fault, setting the fault diagnosis buffer to avoid the occurrence of misdiagnosis.
  • the position sensor fault location is applicable not only to the four positions.
  • Sensor four-phase switched reluctance motor position sensor fault diagnosis and positioning at constant speed and is suitable for four position sensor four-phase switched reluctance motor position sensor fault diagnosis and positioning during acceleration and deceleration operation, can be used for single position sensor, two Fault diagnosis and positioning of position sensor, three position sensors and four position sensors, speed change of motor uniform speed and acceleration and deceleration have no effect on diagnosis and positioning results.
  • the diagnosis method is reliable, practical and has extensive engineering application value. .
  • Figure 1 is a schematic view showing the installation of four position sensors of a four-phase 8/6 structure switched reluctance motor
  • FIG. 2 is a schematic diagram of the division of the fault diagnosis interval of the position sensor of the four-phase 8/6 structure switched reluctance motor
  • FIG. 3 is a schematic diagram of a fault diagnosis buffer for a low-level fault of a four-phase 8/6 structure switched reluctance motor position sensor
  • FIG. 4 is a schematic diagram of a fault diagnosis buffer of a four-phase 8/6 structure switched reluctance motor position sensor high level fault occurring in the interval 1;
  • Figure 5 is a four-phase 8/6 structure switch reluctance motor position sensor high level fault occurs in the interval 2 fault diagnosis Buffering diagram
  • FIG. 6 is a schematic diagram of a fault diagnosis buffer of a four-phase 8/6 structure switched reluctance motor position sensor high level fault occurring in the interval 4;
  • FIG. 7 is a schematic diagram of a fault diagnosis buffer of a four-phase 8/6 structure switched reluctance motor position sensor high level fault occurring in the interval 3;
  • 10 is a low-level fault diagnosis and positioning result of a four-phase 8/6 structure switched reluctance motor position sensor R;
  • 11 is a low-level fault diagnosis and positioning result of a four-phase 8/6 structure switched reluctance motor position sensor S;
  • Figure 12 is a four-phase 8/6 structure switched reluctance motor position sensor P and position sensor Q low-level fault diagnosis and positioning results
  • Figure 13 is a four-phase 8/6 structure switched reluctance motor position sensor Q and position sensor R low-level fault diagnosis and positioning results;
  • Figure 15 is a low-level fault diagnosis and positioning result of the four-phase 8/6 structure switched reluctance motor position sensor S and the position sensor P;
  • Figure 16 is a low-level fault diagnosis and positioning result of the four-phase 8/6 structure switched reluctance motor position sensor P and the position sensor R;
  • 17 is a low-level fault diagnosis and positioning result of a four-phase 8/6 structure switched reluctance motor position sensor Q and a position sensor S;
  • 19 is a low-level fault diagnosis and positioning result of the four-phase 8/6 structure switched reluctance motor position sensor S, the position sensor P, and the position sensor Q;
  • 20 is a low-level fault diagnosis and positioning result of the four-phase 8/6 structure switched reluctance motor position sensor R, the position sensor S, and the position sensor P;
  • Figure 21 shows the low-level fault diagnosis and positioning results of the four-phase 8/6 structure switched reluctance motor position sensor Q, position sensor R and position sensor S.
  • Figure 1 shows the four-phase 8/6 structure switched reluctance motor four position sensors P, Q, R, S installation diagram, four position sensors P, Q, R, S installation angle interval angle ⁇ is 15 degrees,
  • the generated position sensor output signal is as shown in FIG. 2, so that the output signal of the switched reluctance motor position sensor P is earlier than the phase of the output signal of the position sensor Q, and the output signal of the position sensor Q is earlier than the position sensor R.
  • the phase of the output signal, the phase of the output signal of the position sensor R is earlier than the phase of the output signal of the position sensor S, the phase of the output signal of the position sensor S is earlier than the phase of the output signal of the position sensor P; the output signal of the position sensor P is set to rise
  • the rising edge of the output signal along the position sensor Q is the interval 1
  • the rising edge of the output signal of the position sensor Q to the output signal of the position sensor R is the interval 2
  • the output signal of the position sensor R is descending to the position sensor S.
  • the falling edge of the output signal is the interval 3
  • the rising edge of the output signal of the position sensor S to the rising edge of the output signal of the position sensor P is the interval 4
  • the chronologically rising edge pulse P 1 is earlier than the rising edge pulse P 2 , and the adjacent two rising edge pulses are The spacing is an interval.
  • the rising edge pulse P 1 detects the output signal of the position sensor P
  • the rising edge pulse P 2 detects the output signal of the position sensor Q
  • the rising edge pulse P 1 detects the output signal of the position sensor Q
  • the rising edge pulse P 1 detects the output signal of the position sensor Q
  • rises The output signal of the position sensor R is detected along the pulse P 2 , or the output signal of the position sensor R is detected by the rising edge pulse P 1
  • the output signal of the position sensor S is detected by the rising edge pulse P 2
  • the rising edge pulse P 1 is detected.
  • the fault diagnosis buffer When the position sensor P has a low level fault in the intervals 1, 2, 3, 4, as shown in Figures 3a, 3b, 3c, 3d, the fault diagnosis buffers an interval; when the position sensor P has a high level fault in the interval 124 When, as shown in FIG. 4, FIG. 5, and FIG. 6, the fault diagnosis buffers one interval; when the position sensor has a high level fault in the interval 3, as shown in FIG. 7, the fault diagnosis buffers two intervals.
  • the position sensor fault After passing through the fault buffer, the position sensor fault is located. If the rising edge pulse P 1 detects the output signal of the position sensor S, and the rising edge pulse P 2 detects the output signal of the position sensor Q, it is determined that the position sensor P is low. Flat fault, as shown in Figure 8. If the rising edge pulse P 1 detects the output signal of the position sensor P and the rising edge pulse P 2 detects the output signal of the position sensor R, it is determined that the position sensor Q has a low level fault, as shown in FIG. If the rising edge pulse P 1 detects the output signal of the position sensor Q and the rising edge pulse P 2 detects the output signal of the position sensor S, it is judged that the position sensor R has a low level fault, as shown in FIG. If the rising edge pulse P 1 detects the output signal of the position sensor R and the rising edge pulse P 2 detects the output signal of the position sensor P, it is judged that the position sensor S has a low level fault, as shown in FIG. If the rising edge pulse P 1 detects the output signal of the
  • the rising edge pulse P 1 detects the output signal of the position sensor S, and the rising edge pulse P 2 detects the output signal of the position sensor R, it is determined that both the position sensor P and the position sensor Q have a low level fault, as shown in FIG. .
  • the rising edge pulse P 1 detects the output signal of the position sensor P
  • the rising edge pulse P 2 detects the output signal of the position sensor S
  • both the position sensor Q and the position sensor R have a low level fault, as shown in FIG.
  • the rising edge pulse P 1 detects the output signal of the position sensor Q and the rising edge pulse P 2 detects the output signal of the position sensor P
  • both the position sensor R and the position sensor S have a low level fault, as shown in FIG.
  • the rising edge pulse P 1 detects the output signal of the position sensor R and the rising edge pulse P 2 detects the output signal of the position sensor Q
  • both the position sensor S and the position sensor P have a low level fault, as shown in FIG. .
  • the rising edge pulse P 1 detects the output signal of the position sensor S
  • the rising edge pulse P 2 detects the output signal of the position sensor Q
  • the rising edge pulse P 1 detects the output signal of the position sensor Q
  • the rising edge pulse P 2 detects the output signal of the position sensor Q
  • the rising edge pulse P 1 detects the output signal of the position sensor R
  • the rising edge pulse P 2 detects the output signal of the position sensor P
  • the rising edge pulse P 1 detects the output signal of the position sensor P
  • the rising edge pulse P 2 detects the output signal of the position sensor P
  • the rising edge pulse P 2 When the output signal of the position sensor R is detected, it is judged that both the position sensor S and the position sensor Q are low level, as shown in FIG.
  • the rising edge pulse P 1 detects the output signal of the position sensor S, and the rising edge pulse P 2 also detects that the output signal of the position sensor S is detected, it is determined that the position sensor P, the position sensor Q and the position sensor R both generate a low level.
  • the fault is as shown in Figure 18. If the rising edge pulse P 1 detects the output signal of the position sensor R, and the rising edge pulse P 2 also detects the output signal of the position sensor R, it is determined that the position sensor S, the position sensor P, and the position sensor Q both have a low level fault. As shown in Figure 19.
  • the rising edge pulse P 1 detects the output signal of the position sensor Q, and the rising edge pulse P 2 also detects the output signal of the position sensor Q, it is determined that the position sensor R, the position sensor S, and the position sensor P both have a low level fault. As shown in Figure 20. If the rising edge pulse P 1 detects the output signal of the position sensor P, and the rising edge pulse P 2 also detects the output signal of the position sensor P, it is determined that the position sensor Q, the position sensor R, and the position sensor S both have a low level fault. As shown in Figure 21.
  • the position sensor P, the position sensor Q, the position sensor R, and the position sensor S both have a low level fault.
  • the above method is also applicable to the fault diagnosis and location of the four-phase 16/12 structure and four-phase 32/24 structure of the switched reluctance motor position sensor with four position sensors.

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Abstract

一种四相开关磁阻电机四只位置传感器故障诊断与定位方法，根据四只位置传感器输出信号相邻两个上升沿脉冲顺序判断是否有位置传感器故障，设置故障诊断缓冲区间，避免误诊断的发生，通过辨别上升沿脉冲来源的位置传感器输出信号，对位置传感器故障定位。适用于四及四的倍数相、多种拓扑结构、旋转式或直线式开关磁阻电机四只位置传感器的故障诊断与定位，电机匀速和加速、减速等速度变化对诊断与定位结果无影响，诊断方法可靠，实用性强，具有广泛的工程应用价值。

Description

四相开关磁阻电机四只位置传感器故障诊断与定位方法 技术领域
本发明涉及一种四相开关磁阻电机位置传感器故障诊断与定位方法，尤其适用于四及四的倍数相、多种拓扑结构、旋转式或直线式开关磁阻电机四只位置传感器的故障诊断与定位。
背景技术
旋转式或直线式四相开关磁阻电机系统中，常用两只位置传感器输出信号提供速度计算和电机换相提供依据，对于旋转式或直线式开关磁阻电机系统可靠运行具有极其重要的作用。但由于灰尘、碰撞等原因，常用的光电式、磁电式、电磁式位置传感器会发生失效故障，导致故障后位置传感器输出信号边沿脉冲的丢失。位置传感器发生故障而失效，导致开关磁阻电机换相失败，影响开关磁阻电机的可靠运行，因此对位置传感器进行故障诊断和定位极其重要。用四只位置传感器提供速度计算和电机换相提供依据，对提高四相开关磁阻电机系统的容错性能和可靠性十分有益；传统的基于区间时间的故障诊断方法和基于边沿捕获的故障诊断方法仅适用于开关磁阻电机匀速运行状态，对于开关磁阻电机速度变化运行时不适用。如何实现四相开关磁阻电机匀速和加减速运行状态下四只位置传感器故障诊断和定位，是当前开关磁阻电机系统急需解决的技术问题。
发明内容
技术问题：本发明的目的克服已有技术中的不足之处，提供一种四相开关磁阻电机四只位置传感器故障诊断与定位方法。
技术方案：本发明的四相开关磁阻电机四只位置传感器故障诊断与定位方法：
1)使开关磁阻电机位置传感器P的输出信号相位时间早于位置传感器Q的输出信号相位，位置传感器Q的输出信号相位时间早于位置传感器R的输出信号相位，位置传感器R的输出信号相位时间早于位置传感器S的输出信号相位，位置传感器S的输出信号相位早于位置传感器P的输出信号相位，检测开关磁阻电机位置传感器输出信号的相邻两个上升沿脉冲P1和上升沿脉冲P2，时间顺序上上升沿脉冲P1早于上升沿脉冲P2，相邻两个上升沿脉冲的间距为一个区间；
2)若上升沿脉冲P1检测到位置传感器P的输出信号，上升沿脉冲P2检测到位置传感器Q的输出信号，或上升沿脉冲P1检测到位置传感器Q的输出信号，上升沿脉冲P2检测到位置传感器R的输出信号，或上升沿脉冲P1检测到位置传感器R的输出信号，上升沿脉冲P2检测到位置传感器S的输出信号，或上升沿脉冲P1检测到位置传感器S的输 出信号，上升沿脉冲P2检测到位置传感器P的输出信号，则判断位置传感器无故障；
3)若除步骤2)之外的其他情况出现，则判断位置传感器有故障；
4)设定位置传感器P的输出信号上升沿至位置传感器Q的输出信号上升沿为区间①，位置传感器Q的输出信号上升沿至位置传感器R的输出信号上降沿为区间②，位置传感器R的输出信号上降沿至位置传感器S的输出信号上降沿为区间③，位置传感器S的输出信号上降沿至位置传感器P的输出信号上升沿为区间④；
5)当位置传感器发生低电平故障时，故障诊断缓冲一个区间；当位置传感器在区间①②④发生高电平故障时，故障诊断缓冲一个区间；当位置传感器在区间③发生高电平故障时，故障诊断缓冲二个区间；
6)经过故障缓冲区间后，对位置传感器故障进行定位：
若上升沿脉冲P1检测到位置传感器S的输出信号，上升沿脉冲P2检测到位置传感器Q的输出信号，则判断位置传感器P发生故障；若上升沿脉冲P1检测到位置传感器P的输出信号，上升沿脉冲P2检测到位置传感器R的输出信号，则判断位置传感器Q发生故障；若上升沿脉冲P1检测到位置传感器Q的输出信号，上升沿脉冲P2检测到位置传感器S的输出信号，则判断位置传感器R发生故障；若上升沿脉冲P1检测到位置传感器R的输出信号，上升沿脉冲P2检测到位置传感器P的输出信号，则判断位置传感器S发生故障；
若上升沿脉冲P1检测到位置传感器S的输出信号，上升沿脉冲P2检测到位置传感器R的输出信号，则判断位置传感器P和位置传感器Q均发生故障；若上升沿脉冲P1检测到位置传感器P的输出信号，上升沿脉冲P2检测到位置传感器S的输出信号，则判断位置传感器Q和位置传感器R均发生故障；若上升沿脉冲P1检测到位置传感器Q的输出信号，上升沿脉冲P2检测到位置传感器P的输出信号，则判断位置传感器R和位置传感器S均发生故障；若上升沿脉冲P1检测到位置传感器R的输出信号，上升沿脉冲P2检测到位置传感器Q的输出信号，则判断位置传感器S和位置传感器P均发生故障；
若上升沿脉冲P1检测到位置传感器S的输出信号，上升沿脉冲P2检测到位置传感器Q的输出信号，又有上升沿脉冲P1检测到位置传感器Q的输出信号，上升沿脉冲P2检测到位置传感器S的输出信号，则判断位置传感器P和位置传感器R均发生故障；若上升沿脉冲P1检测到位置传感器P的输出信号，上升沿脉冲P2检测到位置传感器R的输出信号，又有上升沿脉冲P1检测到位置传感器R的输出信号，上升沿脉冲P2检测到位置传感器P的输出信号，则判断位置传感器Q和位置传感器S均发生故障；
若上升沿脉冲P1检测到位置传感器S的输出信号，上升沿脉冲P2也检测到位置传感器S的输出信号，则判断位置传感器P、位置传感器Q和位置传感器R均发生故障；若上升沿脉冲P1检测到位置传感器R的输出信号，上升沿脉冲P2也检测到位置传感器R的输出信号，则判断位置传感器S、位置传感器P和位置传感器Q均发生故障；若上升沿脉冲P1检测到位置传感器Q的输出信号，上升沿脉冲P2也检测到位置传感器Q的输出信号，则判断位置传感器R、位置传感器S和位置传感器P均发生故障；若上升沿脉冲P1检测到位置传感器P的输出信号，上升沿脉冲P2也检测到位置传感器P的输出信号，则判断位置传感器Q、位置传感器R和位置传感器S均发生故障；
若始终检测不到边沿脉冲，则判断位置传感器P、位置传感器Q、位置传感器R和位置传感器S均发生故障；
7)检测开关磁阻电机位置传感器输出信号的相邻两个下降沿脉冲P1和下降沿脉冲P2，重复上述步骤，诊断四相开关磁阻电机四只位置传感器故障，并定位所发生故障的位置传感器。
有益效果：由于采用了上述技术方案，本发明适用于四及四的倍数相、多种拓扑结构、旋转式或直线式开关磁阻电机四只位置传感器的故障诊断与定位，通过检测四只位置传感器输出信号上升沿脉冲顺序判断是否有位置传感器故障，设置故障诊断缓冲区间，避免误诊断的发生，通过辨别上升沿脉冲来源的位置传感器输出信号，对位置传感器故障定位，不仅适用于四只位置传感器四相开关磁阻电机匀速运行时位置传感器故障诊断与定位，而且适用于四只位置传感器四相开关磁阻电机加、减速运行时位置传感器故障诊断与定位，可用于单只位置传感器、两只位置传感器、三只位置传感器和四只位置传感器的故障诊断与定位，电机匀速和加速、减速等速度变化对诊断与定位结果无影响，诊断方法可靠，实用性强，具有广泛的工程应用价值。
附图说明
图1是四相8/6结构开关磁阻电机四只位置传感器安装示意图；
图2是四相8/6结构开关磁阻电机位置传感器故障诊断区间划分示意图；
图3是四相8/6结构开关磁阻电机位置传感器发生低电平故障的故障诊断缓冲示意图；
图4是四相8/6结构开关磁阻电机位置传感器高电平故障发生在区间①的故障诊断缓冲示意图；
图5是四相8/6结构开关磁阻电机位置传感器高电平故障发生在区间②的故障诊断 缓冲示意图；
图6是四相8/6结构开关磁阻电机位置传感器高电平故障发生在区间④的故障诊断缓冲示意图；
图7是四相8/6结构开关磁阻电机位置传感器高电平故障发生在区间③的故障诊断缓冲示意图；
图8是四相8/6结构开关磁阻电机位置传感器P低电平故障诊断定位结果；
图9是四相8/6结构开关磁阻电机位置传感器Q低电平故障诊断定位结果；
图10是四相8/6结构开关磁阻电机位置传感器R低电平故障诊断定位结果；
图11是四相8/6结构开关磁阻电机位置传感器S低电平故障诊断定位结果；
图12是四相8/6结构开关磁阻电机位置传感器P和位置传感器Q低电平故障诊断定位结果；
图13是四相8/6结构开关磁阻电机位置传感器Q和位置传感器R低电平故障诊断定位结果；
图14是四相8/6结构开关磁阻电机位置传感器R和位置传感器S低电平故障诊断定位结果；
图15是四相8/6结构开关磁阻电机位置传感器S和位置传感器P低电平故障诊断定位结果；
图16是四相8/6结构开关磁阻电机位置传感器P和位置传感器R低电平故障诊断定位结果；
图17是四相8/6结构开关磁阻电机位置传感器Q和位置传感器S低电平故障诊断定位结果；
图18是四相8/6结构开关磁阻电机位置传感器P、位置传感器Q和位置传感器R均发生低电平故障诊断定位结果；
图19是四相8/6结构开关磁阻电机位置传感器S、位置传感器P和位置传感器Q均发生低电平故障诊断定位结果；
图20是四相8/6结构开关磁阻电机位置传感器R、位置传感器S和位置传感器P均发生低电平故障诊断定位结果；
图21是四相8/6结构开关磁阻电机位置传感器Q、位置传感器R和位置传感器S均发生低电平故障诊断定位结果。
具体实施方式
下面结合附图对本发明的一个实施例作进一步的描述：
图1所示为四相8/6结构开关磁阻电机四只位置传感器P、Q、R、S安装示意图，四只位置传感器P、Q、R、S安装角度间隔角度β为15度，所产生的位置传感器输出信号如图2所示，使开关磁阻电机位置传感器P的输出信号相位时间上早于位置传感器Q的输出信号相位，位置传感器Q的输出信号相位时间上早于位置传感器R的输出信号相位，位置传感器R的输出信号相位时间上早于位置传感器S的输出信号相位，位置传感器S的输出信号相位早于位置传感器P的输出信号相位；设定位置传感器P的输出信号上升沿至位置传感器Q的输出信号上升沿为区间①，位置传感器Q的输出信号上升沿至位置传感器R的输出信号上降沿为区间②，位置传感器R的输出信号上降沿至位置传感器S的输出信号上降沿为区间③，位置传感器S的输出信号上降沿至位置传感器P的输出信号上升沿为区间④。
检测开关磁阻电机位置传感器输出信号的相邻两个上升沿脉冲P1和上升沿脉冲P2，时间顺序上上升沿脉冲P1早于上升沿脉冲P2，相邻两个上升沿脉冲的间距为一个区间。
图2所示，若上升沿脉冲P1检测到位置传感器P的输出信号，上升沿脉冲P2检测到位置传感器Q的输出信号，或上升沿脉冲P1检测到位置传感器Q的输出信号，上升沿脉冲P2检测到位置传感器R的输出信号，或上升沿脉冲P1检测到位置传感器R的输出信号，上升沿脉冲P2检测到位置传感器S的输出信号，或上升沿脉冲P1检测到位置传感器S的输出信号，上升沿脉冲P2检测到位置传感器P的输出信号，则判断位置传感器无故障；若除此之外的其他情况出现，则判断位置传感器有故障。
当位置传感器P在区间①、②、③、④发生低电平故障时，如图3a、3b、3c、3d所示，故障诊断缓冲一个区间；当位置传感器P在区间①②④发生高电平故障时，如图4、图5、图6所示，故障诊断缓冲一个区间；当位置传感器在区间③发生高电平故障时，如图7所示，故障诊断缓冲二个区间。
经过故障缓冲区间后，对位置传感器故障进行定位，若上升沿脉冲P1检测到位置传感器S的输出信号，上升沿脉冲P2检测到位置传感器Q的输出信号，则判断位置传感器P发生低电平故障，如图8所示。若上升沿脉冲P1检测到位置传感器P的输出信号，上升沿脉冲P2检测到位置传感器R的输出信号，则判断位置传感器Q发生低电平故障，如图9所示。若上升沿脉冲P1检测到位置传感器Q的输出信号，上升沿脉冲P2检测到位置传感器S的输出信号，则判断位置传感器R发生低电平故障，如图10所示。若上升沿脉冲P1检测到位置传感器R的输出信号，上升沿脉冲P2检测到位置传感器P的输出信 号，则判断位置传感器S发生低电平故障，如图11所示。
若上升沿脉冲P1检测到位置传感器S的输出信号，上升沿脉冲P2检测到位置传感器R的输出信号，则判断位置传感器P和位置传感器Q均发生低电平故障，如图12所示。若上升沿脉冲P1检测到位置传感器P的输出信号，上升沿脉冲P2检测到位置传感器S的输出信号，则判断位置传感器Q和位置传感器R均发生低电平故障，如图13所示。若上升沿脉冲P1检测到位置传感器Q的输出信号，上升沿脉冲P2检测到位置传感器P的输出信号，则判断位置传感器R和位置传感器S均发生低电平故障，如图14所示。若上升沿脉冲P1检测到位置传感器R的输出信号，上升沿脉冲P2检测到位置传感器Q的输出信号，则判断位置传感器S和位置传感器P均发生低电平故障，如图15所示。
若上升沿脉冲P1检测到位置传感器S的输出信号，上升沿脉冲P2检测到位置传感器Q的输出信号，又有上升沿脉冲P1检测到位置传感器Q的输出信号，上升沿脉冲P2检测到位置传感器S的输出信号，则判断位置传感器P和位置传感器R均发生低电平故障，如图16所示。若上升沿脉冲P1检测到位置传感器R的输出信号，上升沿脉冲P2检测到位置传感器P的输出信号，又有上升沿脉冲P1检测到位置传感器P的输出信号，上升沿脉冲P2检测到位置传感器R的输出信号，则判断位置传感器S和位置传感器Q均低电平发生故障，如图17所示。
若上升沿脉冲P1检测到位置传感器S的输出信号，上升沿脉冲P2也检测到检测到位置传感器S的输出信号，则判断位置传感器P、位置传感器Q和位置传感器R均发生低电平故障，如图18所示。若上升沿脉冲P1检测到位置传感器R的输出信号，上升沿脉冲P2也检测到位置传感器R的输出信号，则判断位置传感器S、位置传感器P和位置传感器Q均发生低电平故障，如图19所示。若上升沿脉冲P1检测到位置传感器Q的输出信号，上升沿脉冲P2也检测到位置传感器Q的输出信号，则判断位置传感器R、位置传感器S和位置传感器P均发生低电平故障，如图20所示。若上升沿脉冲P1检测到位置传感器P的输出信号，上升沿脉冲P2也检测到位置传感器P的输出信号，则判断位置传感器Q、位置传感器R和位置传感器S均发生低电平故障，如图21所示。
若始终检测不到上升沿脉冲，则判断位置传感器P、位置传感器Q、位置传感器R和位置传感器S均发生低电平故障。
检测开关磁阻电机位置传感器输出信号的相邻两个上升沿脉冲P1和上升沿脉冲P2，重复上述步骤，诊断四相开关磁阻电机四只位置传感器发生高电平故障，并定位所发生故障的位置传感器。
检测开关磁阻电机位置传感器输出信号的相邻两个下降沿脉冲P1和下降沿脉冲P2，重复上述步骤，诊断四相开关磁阻电机四只位置传感器发生低电平故障或发生高电平故障，并定位所发生故障的位置传感器。
上述方法对有四只位置传感器的四相16/12结构、四相32/24结构的开关磁阻电机位置传感器故障诊断与定位也适用。

Claims (1)

  1. 一种四相开关磁阻电机四只位置传感器故障诊断与定位方法，其特征在于包括如下步骤：
    1)使开关磁阻电机位置传感器P的输出信号相位时间早于位置传感器Q的输出信号相位，位置传感器Q的输出信号相位时间早于位置传感器R的输出信号相位，位置传感器R的输出信号相位时间早于位置传感器S的输出信号相位，位置传感器S的输出信号相位早于位置传感器P的输出信号相位，检测开关磁阻电机位置传感器输出信号的相邻两个上升沿脉冲P1和上升沿脉冲P2，时间顺序上上升沿脉冲P1早于上升沿脉冲P2，相邻两个上升沿脉冲的间距为一个区间；
    2)若上升沿脉冲P1检测到位置传感器P的输出信号，上升沿脉冲P2检测到位置传感器Q的输出信号，或上升沿脉冲P1检测到位置传感器Q的输出信号，上升沿脉冲P2检测到位置传感器R的输出信号，或上升沿脉冲P1检测到位置传感器R的输出信号，上升沿脉冲P2检测到位置传感器S的输出信号，或上升沿脉冲P1检测到位置传感器S的输出信号，上升沿脉冲P2检测到位置传感器P的输出信号，则判断位置传感器无故障；
    3)若除步骤2)之外的其他情况出现，则判断位置传感器有故障；
    4)设定位置传感器P的输出信号上升沿至位置传感器Q的输出信号上升沿为区间①，位置传感器Q的输出信号上升沿至位置传感器R的输出信号上降沿为区间②，位置传感器R的输出信号上降沿至位置传感器S的输出信号上降沿为区间③，位置传感器S的输出信号上降沿至位置传感器P的输出信号上升沿为区间④；
    5)当位置传感器发生低电平故障时，故障诊断缓冲一个区间；当位置传感器在区间①②④发生高电平故障时，故障诊断缓冲一个区间；当位置传感器在区间③发生高电平故障时，故障诊断缓冲二个区间；
    6)经过故障缓冲区间后，对位置传感器故障进行定位：
    若上升沿脉冲P1检测到位置传感器S的输出信号，上升沿脉冲P2检测到位置传感器Q的输出信号，则判断位置传感器P发生故障；若上升沿脉冲P1检测到位置传感器P的输出信号，上升沿脉冲P2检测到位置传感器R的输出信号，则判断位置传感器Q发生故障；若上升沿脉冲P1检测到位置传感器Q的输出信号，上升沿脉冲P2检测到位置传感器S的输出信号，则判断位置传感器R发生故障；若上升沿脉冲P1检测到位置传感器R的输出信号，上升沿脉冲P2检测到位置传感器P的输出信号，则判断位置传感器S发生故障；
    若上升沿脉冲P1检测到位置传感器S的输出信号，上升沿脉冲P2检测到位置传感器R的输出信号，则判断位置传感器P和位置传感器Q均发生故障；若上升沿脉冲P1检测到位置传感器P的输出信号，上升沿脉冲P2检测到位置传感器S的输出信号，则判断位置传感器Q和位置传感器R均发生故障；若上升沿脉冲P1检测到位置传感器Q的输出信号，上升沿脉冲P2检测到位置传感器P的输出信号，则判断位置传感器R和位置传感器S均发生故障；若上升沿脉冲P1检测到位置传感器R的输出信号，上升沿脉冲P2检测到位置传感器Q的输出信号，则判断位置传感器S和位置传感器P均发生故障；
    若上升沿脉冲P1检测到位置传感器S的输出信号，上升沿脉冲P2检测到位置传感器Q的输出信号，又有上升沿脉冲P1检测到位置传感器Q的输出信号，上升沿脉冲P2检测到位置传感器S的输出信号，则判断位置传感器P和位置传感器R均发生故障；若上升沿脉冲P1检测到位置传感器P的输出信号，上升沿脉冲P2检测到位置传感器R的输出信号，又有上升沿脉冲P1检测到位置传感器R的输出信号，上升沿脉冲P2检测到位置传感器P的输出信号，则判断位置传感器Q和位置传感器S均发生故障；
    若上升沿脉冲P1检测到位置传感器S的输出信号，上升沿脉冲P2也检测到位置传感器S的输出信号，则判断位置传感器P、位置传感器Q和位置传感器R均发生故障；若上升沿脉冲P1检测到位置传感器R的输出信号，上升沿脉冲P2也检测到位置传感器R的输出信号，则判断位置传感器S、位置传感器P和位置传感器Q均发生故障；若上升沿脉冲P1检测到位置传感器Q的输出信号，上升沿脉冲P2也检测到位置传感器Q的输出信号，则判断位置传感器R、位置传感器S和位置传感器P均发生故障；若上升沿脉冲P1检测到位置传感器P的输出信号，上升沿脉冲P2也检测到位置传感器P的输出信号，则判断位置传感器Q、位置传感器R和位置传感器S均发生故障；
    若始终检测不到边沿脉冲，则判断位置传感器P、位置传感器Q、位置传感器R和位置传感器S均发生故障；
    7)检测开关磁阻电机位置传感器输出信号的相邻两个下降沿脉冲P1和下降沿脉冲P2，重复上述步骤，诊断四相开关磁阻电机四只位置传感器故障，并定位所发生故障的位置传感器。
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