WO2016091091A1 - 四相开关磁阻电机两只位置传感器故障诊断与定位方法 - Google Patents

四相开关磁阻电机两只位置传感器故障诊断与定位方法 Download PDF

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WO2016091091A1
WO2016091091A1 PCT/CN2015/095894 CN2015095894W WO2016091091A1 WO 2016091091 A1 WO2016091091 A1 WO 2016091091A1 CN 2015095894 W CN2015095894 W CN 2015095894W WO 2016091091 A1 WO2016091091 A1 WO 2016091091A1
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position sensor
output signal
edge
switched reluctance
interval
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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
China University of Mining and Technology Beijing CUMTB
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China University of Mining and Technology CUMT
China University of Mining and Technology Beijing CUMTB
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/34—Testing dynamo-electric machines
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
    • H02P6/12—Monitoring commutation; Providing indication of commutation failure

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  • the invention relates to a fault diagnosis and positioning method for two position sensors of a four-phase switched reluctance motor, in particular to two position sensors of four and four multiple phases, multiple topologies, rotary or linear switched reluctance motors Fault diagnosis and positioning.
  • the position sensor output signal provides a basis for speed calculation and motor commutation, which is extremely important for the reliable operation of rotary or linear switched reluctance motor systems.
  • the commonly used photoelectric, magnetoelectric, and electromagnetic position sensors may fail, resulting in the loss of the edge pulse of the output signal of the position sensor after the failure. If the position sensor fails and fails, the commutation of the switched reluctance motor fails, which affects the reliable operation of the switched reluctance motor. Therefore, it is extremely important to diagnose and locate the position sensor.
  • the traditional interval-based fault diagnosis method and the edge-based fault diagnosis method are only applicable to the constant-speed operation state of the switched reluctance motor, and are not applicable to the operation of the switched reluctance motor speed change. How to realize the fault diagnosis and positioning of two position sensors under the constant 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 is to provide a fault diagnosis and positioning method for two position sensors of a four-phase switched reluctance motor in view of the problems in the prior art.
  • edge pulse P 1 detects the output signal of the position sensor Q
  • edge pulse P 2 detects the output signal of the position sensor P
  • the edge pulse P 1 detects the output signal of the position sensor P
  • the edge pulse P 2 detects the position.
  • the output signal of the sensor Q determines that the position sensor is faultless
  • 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 fault occurs in the interval 13, the fault diagnosis buffers two intervals; when the position sensor fault occurs in the interval 24, the fault diagnosis buffers an interval;
  • edge pulse P 1 detects the output signal of the position sensor Q, and the edge pulse P 2 detects the output signal of the position sensor Q, it determines that the position sensor P has failed; if the edge pulse P 1 detects the output signal of the position sensor P, the edge When the pulse P 2 detects the output signal of the position sensor P, it is determined that the position sensor Q is faulty;
  • the present invention is applicable to fault diagnosis and positioning of two position sensors of four and four multiple phases, multiple topologies, rotary or linear switched reluctance motors, by detecting two position sensors The edge of the output signal is judged whether there is a position sensor fault, and the fault diagnosis buffer is set to avoid the occurrence of misdiagnosis.
  • the position sensor fault location is not only applicable to the switched reluctance motor running at a constant speed.
  • Time position sensor fault diagnosis and positioning and suitable for position sensor fault diagnosis and positioning of switched reluctance motor during acceleration and deceleration operation, can be used for fault diagnosis and positioning of single position sensor, two position sensors, motor uniform speed and acceleration, deceleration
  • the constant velocity change has no effect on the diagnosis and positioning results, the diagnosis method is reliable, the utility is strong, and it has a wide range of engineering application values.
  • Figure 1 is a schematic view showing the installation of two 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 of a four-phase 8/6 structure switched reluctance motor position sensor with a low level fault occurring in the interval 1;
  • FIG. 4 is a schematic diagram of a fault diagnosis buffer of a four-phase 8/6 structure switched reluctance motor position sensor with a low level fault occurring in the interval 3;
  • FIG. 5 is a schematic diagram of a fault diagnosis buffer of a four-phase 8/6 structure switched reluctance motor position sensor with a low level fault occurring in the interval 2;
  • FIG. 6 is a schematic diagram of a fault diagnosis buffer of a four-phase 8/6 structure switched reluctance motor position sensor with a low level fault occurring in the interval 4;
  • FIG. 9 is a schematic diagram showing the correspondence relationship between the high and low level fault sections of the position sensor of the four-phase 8/6 structure switched reluctance motor.
  • Figure 1 shows the installation of two position sensors P and Q of a four-phase 8/6 structure switched reluctance motor.
  • the position angles of the two position sensors P and Q are 75 degrees.
  • the resulting position sensor output signal is shown in Figure 1.
  • the output signal phase of the switched reluctance motor position sensor P is earlier than the phase of the output signal of the position sensor Q;
  • the rising edge of the output signal of the position sensor P to the rising edge of the output signal of the position sensor Q is the interval 1
  • the position The falling edge of the output signal of the sensor Q to the falling edge of the output signal of the position sensor P is the interval 2
  • the falling edge of the output signal of the position sensor P to the falling edge of the output signal of the position sensor Q is the interval 3
  • the falling edge of the output signal of the position sensor Q is
  • the rising edge of the output signal of the position sensor P is the interval 4;
  • the time sequence upper edge pulse P 1 is earlier than the edge pulse P 2 , and the interval between adjacent two edge pulses is one interval;
  • the edge pulse P 1 detects the output signal of the position sensor Q
  • the edge pulse P 2 detects the output signal of the position sensor P
  • the edge pulse P 1 detects the output signal of the position sensor P
  • the edge pulse P 2 When the output signal of the position sensor Q is detected, it is judged that the position sensor has no fault; if other conditions occur, it is judged that the position sensor is faulty.
  • the position sensor fault After passing through the fault buffer, the position sensor fault is located. If the edge pulse P 1 detects the output signal of the position sensor Q, and the edge pulse P 2 detects the output signal of the position sensor Q, it is determined that the position sensor P has a low level fault. , as shown in Figure 7. If the edge pulse P 1 detects the output signal of the position sensor P, and the edge pulse P 2 detects the output signal of the position sensor P, it is determined that the position sensor Q has a low level fault, as shown in FIG. 8;
  • 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 two position sensors.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Electric Motors In General (AREA)

Abstract

一种四相开关磁阻电机两只位置传感器故障诊断与定位方法，适用于四及四的倍数组、多种拓扑结构、旋转式或直线式开关磁阻电机两只位置传感器的故障诊断定位，根据两只位置传感器输出信号相邻两个边沿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，通过辨别边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，可用于单只位置传感器、两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

四相开关磁阻电机两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两只位置传感器故障诊断与定位方法，尤其是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两只位置传感器的故障诊断与定位。
背景技术
旋转式或直线式开关磁阻电机系统中，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。若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。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两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：本发明的目的是针对已有技术中存在问题，提供一种四相开关磁阻电机两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两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上早于位置传感器Q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边沿脉冲P1和边沿脉冲P2，时间顺序上边沿脉冲P1早于边沿脉冲P2，相邻两个边沿脉冲的间距为一个区间；
2)若边沿脉冲P1检测到位置传感器Q的输出信号，边沿脉冲P2检测到位置传感器P的输出信号，或边沿脉冲P1检测到位置传感器P的输出信号，边沿脉冲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P的输出信号下降沿为区间②，位置传感器P的输出信号下降沿至位置传感器Q的输出信号下降沿为区间③，位置传感器Q的输出信号下降沿至位置传感器P的输出信号上升沿为区间④；
5)当位置传感器故障发生在区间①③时，故障诊断缓冲两个区间；当位置传感器故障发生在区间②④时，故障诊断缓冲一个区间；
6)经过故障缓冲区间后，对位置传感器故障进行定位：
若边沿脉冲P1检测到位置传感器Q的输出信号，边沿脉冲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；若边沿脉冲P1检测到位置传感器P的输出信号，边沿脉冲P2检测到位置传感器P的输出信号，则判断位置传感器Q发生故障；
若始终检测不到边沿脉冲，则判断位置传感器P和位置传感器Q均发生故障。
有益效果：由于采用了上述技术方案，本发明对四及四的倍数相、多种拓扑结构、旋转式或直线式开关磁阻电机两只位置传感器故障诊断与定位适用，通过检测两只位置传感器输出信号边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，通过辨别边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结构开关磁阻电机两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低电平故障发生在区间①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低电平故障发生在区间③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低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低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P低电平故障诊断定位结果；
图8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9是四相8/6结构开关磁阻电机位置传感器高低电平故障区间划分对应关系示意图。
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结构开关磁阻电机两只位置传感器P、Q安装示意图，两只位置传感器P、Q安装角度间隔角度β为75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P的输出信号下降沿为区间②，位置传感器P的输出信号下降沿至位置传感器Q的输出信号下降沿为区间③，位置传感器Q的输出信号下降沿至位置传感器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边沿脉冲P1和边沿脉冲P2，时间顺序上边沿脉冲P1早于边沿脉冲P2，相邻两个边沿脉冲的间距为一个区间；
图2所示，若边沿脉冲P1检测到位置传感器Q的输出信号，边沿脉冲P2检测到位置传感器P的输出信号，或边沿脉冲P1检测到位置传感器P的输出信号，边沿脉冲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①③发生低电平故障，如图3图4所示，故障诊断缓冲两个区间；当位置传感器P在区间②④发生低电平故障，如图5图6所示，故障诊断缓冲一个区间；
经过故障缓冲区间后，对位置传感器故障进行定位，若边沿脉冲P1检测到位置传感器Q的输出信号，边沿脉冲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7所示。若边沿脉冲P1检测到位置传感器P的输出信号，边沿脉冲P2检测到位置传感器P的输出信号，则判断位置传感器Q发生低电平故障，如图8所示；
若始终检测不到边沿脉冲，则判断位置传感器P和位置传感器Q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边沿脉冲P1和边沿脉冲P2，重复上述步骤，诊断四相开关磁阻电机两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，对应的区间划分如图9所示。
上述方法对有两只位置传感器的四相16/12结构、四相32/24结构等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两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上早于位置传感器Q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边沿脉冲P1和边沿脉冲P2，时间顺序上边沿脉冲P1早于边沿脉冲P2，相邻两个边沿脉冲的间距为一个区间；
    2)若边沿脉冲P1检测到位置传感器Q的输出信号，边沿脉冲P2检测到位置传感器P的输出信号，或边沿脉冲P1检测到位置传感器P的输出信号，边沿脉冲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P的输出信号下降沿为区间②，位置传感器P的输出信号下降沿至位置传感器Q的输出信号下降沿为区间③，位置传感器Q的输出信号下降沿至位置传感器P的输出信号上升沿为区间④；
    5)当位置传感器故障发生在区间①③时，故障诊断缓冲两个区间；当位置传感器故障发生在区间②④时，故障诊断缓冲一个区间；
    6)经过故障缓冲区间后，对位置传感器故障进行定位：
    若边沿脉冲P1检测到位置传感器Q的输出信号，边沿脉冲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；若边沿脉冲P1检测到位置传感器P的输出信号，边沿脉冲P2检测到位置传感器P的输出信号，则判断位置传感器Q发生故障；
    若始终检测不到边沿脉冲，则判断位置传感器P和位置传感器Q均发生故障。
PCT/CN2015/095894 2014-12-08 2015-11-30 四相开关磁阻电机两只位置传感器故障诊断与定位方法 Ceased WO2016091091A1 (zh)

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