CN105627959A - Calibration system for switch reluctance motor position signal sensor - Google Patents
Calibration system for switch reluctance motor position signal sensor Download PDFInfo
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- CN105627959A CN105627959A CN201610097055.8A CN201610097055A CN105627959A CN 105627959 A CN105627959 A CN 105627959A CN 201610097055 A CN201610097055 A CN 201610097055A CN 105627959 A CN105627959 A CN 105627959A
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- switching tube
- emitting diode
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- position signalling
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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
Abstract
The invention discloses a calibration system for a switch reluctance motor position signal sensor, and the system comprises a CPU, a power converter, a switching power supply, and a position bias discrimination circuit. A pulse width modulation module in the CPU outputs a three-phase PWM drive signal to a grid electrode of a three-phase upper switching tube in the power converter, wherein the drain electrode of the three-phase upper switching tube is connected with the switching power supply, and the source electrode of the three-phase upper switching tube is in series connection with one motor stator winding and then connected with the drain electrode of a lower switching tube. The source electrode of the lower switching tube is grounded, and an input/output module IO in the CPU outputs a three-phase lower tube control signal to the grid electrode of a three-phase lower switching tube in the power converter. The position bias discrimination circuit is disposed at an output end of any one position signal sensor in the three-phase position signal sensors, and comprises a resistor R1 and a light-emitting diode D1. One end of the resistor R1 is connected with the output of the position signal sensor, and the other end of the resistor R1 is connected with the positive electrode of the light-emitting diode D1. The negative electrode of the light-emitting diode D1 is grounded. According to the on/off change of the light-emitting diode D1, the system judges whether the position of the position signal sensor is accurate or not, the offset direction and degree, and carries out manual calibration according to the offset condition.
Description
Technical field
The invention belongs to Motor Control Field, particularly to a kind of control device of switched reluctance motor, the adjustment of switched reluctance machines position signalling sensor can be realized.
The invention belongs to Motor Control Field, particularly to a kind of control device of switched reluctance motor, the calibration of switched reluctance machines position signalling sensor can be realized.
Background technology
Switched reluctance machines simple in construction is firm, reliable operation, efficiency is high, by the Switch reluctance motor driving system that it is constituted compared with tradition AC_DC electric drive system, have many advantages, as: starting torque is big, speed-regulating range width, controls flexibly, can conveniently realize four quadrant running, there is stronger regeneration braking capacity, in broad rotating speed and power bracket, all there is high efficiency, be conducive to saving energy and reduce the cost; It is operable with high rotating speed; Can phase-deficient operation, fault-tolerant ability is strong.
The relative position of switched reluctance machines position signalling and rotor and stator, when stator salient poles is relative with rotor with salient pole, relative position is 0, stator salient poles recessed with rotor extremely relative time, relative position is maximum. Position signalling sensors sense switch reluctance motor stator and the relative position of rotor, be converted into digital signal output, the i.e. position signalling of switched reluctance machines. Controller is by the sampling to position signalling, it is judged that currently respectively whether open mutually. Whether the position of position signalling sensor is accurate, determines the precision that rotor-position is sampled by position signalling sample circuit. Switchette reluctance motor mainly adopts hall sensor signal sensor or optoelectronic position signal transducer, and its essence is identical. The method of traditional detection position signalling generally has two kinds: one to be adopt LCR measuring instrument, measures each phase winding inductance value, stator salient poles and rotor with salient pole relative to time inductance maximum. Due to motor process problem, LCR defined location is not very accurate, in addition it is also necessary to manual adjustments. Near LCR defined location, by comparing switched reluctance machines whether rotate and reverse hourly velocity consistent, it determines whether the position of position signalling sensor has deviation. Based on whether the position that can differentiate position signalling sensor on the theoretical method of LCR has deviation, but for the comparison of the speed subjective visual inspection often through people in Practical Project, it is difficult to ensure that the accuracy that position differentiates, and speed variation is little, it is difficult to improve the precision that position differentiates. Two is adopt rotary transformer. This is a kind of small-sized ac motor measuring angle, it is possible to measure rotating shaft angular travel and the angular velocity of rotating object. Method position signalling based on rotary transformer is accurate, but high cost.
Summary of the invention
For above-mentioned prior art Problems existing and deficiency, it is an object of the invention to provide the calibration system of a kind of switched reluctance machines position signalling sensor, solve the problem that switched reluctance machines position signalling sensing station is inaccurate.
For achieving the above object, the technical solution used in the present invention is: the calibration system of a kind of switched reluctance machines position signalling sensor, position signalling sensor is that three-phase is arranged, it is A phase position signal transducer respectively, B-phase puts signal transducer and C phase position signal transducer, the three-phase position signal information of detection motor, position signalling sensor is by the magnetic field on induction machine magnet ring, detect the relative position of Stators for Switched Reluctance Motors and rotor and be translated into digital signal output, this digital signal is exactly the position signalling of switched reluctance machines, controller is by the sampling to position signalling, judge currently respectively whether to open mutually, it is characterized in that: microprocessor CPU is set, adopt the power inverter of asymmetrical half-bridge structure, Switching Power Supply and position skew judging circuit, microprocessor CPU includes pulse-width modulation PWM module and input/output module IO, pulse-width modulation PWM module output three-phase PWM drives signal to the grid of switching tube on the three-phase in power inverter, in control, switching tube opens and shutoff, the drain electrode of upper switching tube connects Switching Power Supply, the drain electrode of lower switching tube is connected after the source series phase motor stator winding of upper switching tube, the source ground of lower switching tube, input/output module IO exports pipe control signal under three-phase and, to the grid of switching tube under the three-phase in power inverter, controls opening and shutoff of lower switching tube, the outfan of wherein any one phase position signal transducer that position skew judging circuit is arranged in three-phase position signal sensor, position skew judging circuit includes resistance R1 and light emitting diode D1, the output of one end link position signal transducer of resistance R1, the positive pole of the other end connecting luminous diode D1 of resistance R1, the minus earth of light emitting diode D1, the change that flickers according to light emitting diode D1, whether the position of differentiation position signalling sensor is accurate and to which side offsets and degrees of offset, carries out manual calibration according to drift condition, during calibration, manual rotation position signalling sensor, direction is position signalling sensor offset side, then rejudges whether position sensor is calibrated, if the deviation of still having, the manual calibration before repetition, if zero deflection, then calibrates complete.
For A phase, described position skew judging circuit is arranged at the outfan of A phase position signal transducer, A phase pulse width modulated drive signal is always high level, namely the A phase of switched reluctance machines is in the conduction state all the time, according to magnetic resistance minimum principle, the rotor of switched reluctance machines by locked near A phase stator is relative with the salient pole of rotor, B phase, C phase pulse width modulated drive signal is square wave, and amplitude is contrary, when B phase signals is high level, C phase signals is low level, when B phase signals is low level, C phase signals is high level, B, C two turns on separately, rotor swings at A phase locking position, if the position of position signalling sensor does not have deviation, then light emitting diode D1 brightens equal with the dimmed time, namely dutycycle is 50%, if B phase side is partial in the position of position signalling sensor, then the light emitting diode D1 time of brightening is longer than the dimmed time, and namely dutycycle is more than 50%, and position signalling sensor position offset is more big, and the time that light emitting diode D1 brightens is more long, and dutycycle is more big, if C phase side is partial in the position of position signalling sensor, then the light emitting diode D1 dimmed time is longer than the time of brightening, and namely dutycycle is less than 50%, and position signalling sensor position offset is more big, and the time dimmed for light emitting diode D1 is more long, and dutycycle is more little.
Advantages of the present invention and beneficial effect: the present invention can interpolate that whether switched reluctance machines position signalling sensor current location is accurate, and the position signalling sensor size to which side skew and skew can be shown, positional information accurately is provided for switched reluctance machines speed-adjusting and control system, principle and circuit are simple, it is easily achieved, precision is high, and with low cost.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of switched reluctance machines position signalling sensor calibrating system;
Fig. 2 is the cut-away view of switched reluctance machines position signalling sensor calibrating system;
Fig. 3 is the three-phase pulse width modulated drive signal waveform schematic diagram of switched reluctance machines position signalling sensor calibrating system, and in figure, A, B, C represent the A phase of switched reluctance machines, B phase and C phase;
Fig. 4 is the asymmetrical half-bridge structure that switched reluctance machines position signalling sensor calibrating system power inverter adopts.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, it is further elucidated with the present invention, it should be understood that these embodiments are merely to illustrate the present invention rather than restriction the scope of the present invention, after having read the present invention, the amendment of the various equivalent form of values of the present invention is all fallen within the application claims limited range by those skilled in the art.
As shown in Figure 1, under microprocessor output three-phase PWM driving signal, three-phase, pipe control signal is to power inverter, control upper switching tube, the opening and shutoff of lower switching tube respectively, thus controlling opening and shutoff of switched reluctance machines three-phase, simultaneously, the magnetic field outgoing position signal on position signalling sensor sensing magnet ring on motor, position skew judging circuit differentiates that whether position signalling sensing station is accurate, to which side offsets and degrees of offset, thus realizing the adjustment to switch reluctance motor position position.
As shown in Figure 2, microprocessor (CPU) 1 includes pulse width modulation module (PWM) 11 and input/output module (IO) 12, wherein, input/output module (IO) 12 exports switch controlled signal under three-phase to power inverter 3, control opening and shutoff of lower switching tube, pulse width modulation module (PWM) 11 exports three-phase pulse width modulated to power inverter 3 and drives signal, and in control, switching tube opens and shutoff. Position skew judging circuit 2 includes resistance R1 and light emitting diode D1, for A phase in figure, resistance R1 one end is connected with A phase position signal transducer, the other end is connected with the anode of light emitting diode D1, the negativing ending grounding (GND) of light emitting diode D1, the change that flickers according to light emitting diode D1 can differentiate that whether position signalling sensing station is accurate, to which side offset and degrees of offset, thus realizing the adjustment to switch reluctance motor position position.
As shown in Figure 4, the power inverter of switched reluctance machines position signalling sensor calibrating system adopts known asymmetrical half-bridge structure, including switching tube on three-phase and switching tube under three-phase, the grid of upper switching tube accesses the three-phase pulse width modulated exported by microprocessor and drives signal, and the grid of lower switching tube accesses switch controlled signal under the three-phase exported by microprocessor; The drain electrode of upper switching tube connects Switching Power Supply, connects the drain electrode of lower switching tube after source series phase motor stator winding; The source ground GND of lower switching tube.
Specific embodiment of the invention application scheme is described below.
Position signalling sensor of the present invention adopts MT4601 hall signal sensor, Switching Power Supply provides 20V direct-current working volts to power inverter, thering is provided 5V direct-current working volts to hall signal sensor, light emitting diode D1 adopts common light emitting diode, and resistance R1 resistance is 10 ohm.
Being illustrated in figure 3 the pulse width modulated drive signal waveform diagram of switched reluctance machines position signalling sensor calibrating system, in figure, A, B, C represent the A phase of switched reluctance machines, B phase, C phase. For A phase, in figure, position skew judging circuit is arranged at the outfan of A phase position signal transducer, A phase pulse width modulated drive signal is always high level, namely the A phase of switched reluctance machines is in the conduction state all the time, due to magnetic resistance minimum principle, the rotor of switched reluctance machines by locked near A phase stator is relative with the salient pole of rotor. B phase, C phase pulse width modulated drive signal are square wave, and frequency is 1Hz, and dutycycle is 10%, and amplitude is contrary, when B phase signals is high level, C phase signals is low level, when B phase signals is low level, C phase signals is high level, and B, C two turns on separately, and rotor swings at A phase locking position. If the position of position signalling sensor does not have deviation, then the first light emitting diode brightens equal with the dimmed time, and namely dutycycle is 50%; If B phase side is partial in the position of position signalling sensor, then the first light emitting diode time of brightening was longer than the dimmed time, and namely dutycycle is more than 50%, and position signalling sensor position offset is more big, the time that first light emitting diode brightens is more long, and dutycycle is more big; If C phase side is partial in the position of position signalling sensor, then the first light emitting diode dimmed time was longer than the time of brightening, and namely dutycycle is less than 50%, and position signalling sensor position offset is more big, first light emitting diode dimmed time is more long, and dutycycle is more little. B, C phase pulse width modulated drive signal pulse is more short, it is judged that precision is more high.
The present invention is a kind of switched reluctance machines position signalling sensor calibrating system, after the position judging switched reluctance machines position signalling sensor exists deviation, need to carry out manual calibration. Calibration steps is as follows: the first step, it is determined that position signalling sensor to which side offsets; Second step, manual rotation position signalling sensor, direction is position signalling sensor offset side; 3rd step, rejudges whether position sensor is calibrated. If the deviation of still having, step before repetition; If zero deflection, then calibrating complete, switched reluctance machines position signalling sensing station is accurate.
Claims (2)
1. the calibration system of a switched reluctance machines position signalling sensor, position signalling sensor is that three-phase is arranged, it is A phase position signal transducer respectively, B-phase puts signal transducer and C phase position signal transducer, the three-phase position signal information of detection motor, position signalling sensor is by the magnetic field on induction machine magnet ring, detect the relative position of Stators for Switched Reluctance Motors and rotor and be translated into digital signal output, this digital signal is exactly the position signalling of switched reluctance machines, controller is by the sampling to position signalling, judge currently respectively whether to open mutually, it is characterized in that: microprocessor CPU is set, adopt the power inverter of asymmetrical half-bridge structure, Switching Power Supply and position skew judging circuit, microprocessor CPU includes pulse-width modulation PWM module and input/output module IO, pulse-width modulation PWM module output three-phase PWM drives signal to the grid of switching tube on the three-phase in power inverter, in control, switching tube opens and shutoff, the drain electrode of upper switching tube connects Switching Power Supply, the drain electrode of lower switching tube is connected after the source series phase motor stator winding of upper switching tube, the source ground of lower switching tube, input/output module IO exports pipe control signal under three-phase and, to the grid of switching tube under the three-phase in power inverter, controls opening and shutoff of lower switching tube, the outfan of wherein any one phase position signal transducer that position skew judging circuit is arranged in three-phase position signal sensor, position skew judging circuit includes resistance R1 and light emitting diode D1, the output of one end link position signal transducer of resistance R1, the positive pole of the other end connecting luminous diode D1 of resistance R1, the minus earth of light emitting diode D1, the change that flickers according to light emitting diode D1, whether the position of differentiation position signalling sensor is accurate and to which side offsets and degrees of offset, carries out manual calibration according to drift condition, during calibration, manual rotation position signalling sensor, direction is position signalling sensor offset side, then rejudges whether position sensor is calibrated, if the deviation of still having, the manual calibration before repetition, if zero deflection, then calibrates complete.
2. the calibration system of switched reluctance machines position signalling sensor according to claim 1, it is characterized in that: position skew judging circuit is arranged at the outfan of A phase position signal transducer, A phase pulse width modulated drive signal is always high level, namely the A phase of switched reluctance machines is in the conduction state all the time, according to magnetic resistance minimum principle, the rotor of switched reluctance machines by locked near A phase stator is relative with the salient pole of rotor, B phase, C phase pulse width modulated drive signal is square wave, and amplitude is contrary, when B phase signals is high level, C phase signals is low level, when B phase signals is low level, C phase signals is high level, B, C two turns on separately, rotor swings at A phase locking position, if the position of position signalling sensor does not have deviation, then light emitting diode D1 brightens equal with the dimmed time, namely dutycycle is 50%, if B phase side is partial in the position of position signalling sensor, then the light emitting diode D1 time of brightening is longer than the dimmed time, and namely dutycycle is more than 50%, and position signalling sensor position offset is more big, and the time that light emitting diode D1 brightens is more long, and dutycycle is more big, if C phase side is partial in the position of position signalling sensor, then the light emitting diode D1 dimmed time is longer than the time of brightening, and namely dutycycle is less than 50%, and position signalling sensor position offset is more big, and the time dimmed for light emitting diode D1 is more long, and dutycycle is more little.
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| CN201610097055.8A CN105627959B (en) | 2016-02-23 | 2016-02-23 | A kind of calibration system of switched reluctance machines position signalling sensor |
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| CN201610097055.8A CN105627959B (en) | 2016-02-23 | 2016-02-23 | A kind of calibration system of switched reluctance machines position signalling sensor |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10146092A (en) * | 1996-11-01 | 1998-05-29 | Samsung Electron Co Ltd | Motor driver |
| CN1412937A (en) * | 2001-10-12 | 2003-04-23 | 乐金电子(天津)电器有限公司 | Method for detecting position signal of switch reluctance machine |
| CN1877980A (en) * | 2005-06-10 | 2006-12-13 | 国际整流器公司 | Hall sensor alignment for BLDC motor |
| CN1937394A (en) * | 2005-09-19 | 2007-03-28 | 乐金电子(天津)电器有限公司 | Brushless direct-current machine counter electromotive position detecting circuit |
| DE102006032491A1 (en) * | 2006-07-13 | 2008-01-17 | Siemens Ag | Method and device for determining the rotor position in a brushless and sensorless electric motor |
| CN103178768A (en) * | 2011-12-26 | 2013-06-26 | 上海大郡动力控制技术有限公司 | Device for detecting initial position of rotor of permanent-magnetic synchronous motor and using method thereof |
-
2016
- 2016-02-23 CN CN201610097055.8A patent/CN105627959B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10146092A (en) * | 1996-11-01 | 1998-05-29 | Samsung Electron Co Ltd | Motor driver |
| CN1412937A (en) * | 2001-10-12 | 2003-04-23 | 乐金电子(天津)电器有限公司 | Method for detecting position signal of switch reluctance machine |
| CN1877980A (en) * | 2005-06-10 | 2006-12-13 | 国际整流器公司 | Hall sensor alignment for BLDC motor |
| CN1937394A (en) * | 2005-09-19 | 2007-03-28 | 乐金电子(天津)电器有限公司 | Brushless direct-current machine counter electromotive position detecting circuit |
| DE102006032491A1 (en) * | 2006-07-13 | 2008-01-17 | Siemens Ag | Method and device for determining the rotor position in a brushless and sensorless electric motor |
| CN103178768A (en) * | 2011-12-26 | 2013-06-26 | 上海大郡动力控制技术有限公司 | Device for detecting initial position of rotor of permanent-magnetic synchronous motor and using method thereof |
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| CN105627959B (en) | 2018-03-20 |
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Application publication date: 20160601 Assignee: Changzhou Fulling Motor Co., Ltd. Assignor: Southeast University Contract record no.: 2019320000053 Denomination of invention: Calibration system for switch reluctance motor position signal sensor Granted publication date: 20180320 License type: Exclusive License Record date: 20190321 |