CN104229578A - Coder anomaly detection device and elevator device employing coder anomaly detection device - Google Patents
Coder anomaly detection device and elevator device employing coder anomaly detection device Download PDFInfo
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- CN104229578A CN104229578A CN201410244459.6A CN201410244459A CN104229578A CN 104229578 A CN104229578 A CN 104229578A CN 201410244459 A CN201410244459 A CN 201410244459A CN 104229578 A CN104229578 A CN 104229578A
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Abstract
The invention provides a coder anomaly detection device which can detect noise practically and an elevator device employing the coder anomaly detection device. The coder anomaly detection device is a coder anomaly detection device detecting anomaly of a sine wave coder 4. The sine wave coder 4 outputs a two-phase signal of a sine wave and a cosine wave along rotation of a rotating body. The sine wave and the cosine wave have two voltage polarities of a positive electrode and a negative electrode or with certain deviation, and the phase difference is 90 degrees. The coder anomaly detection device comprises a conversion part and a comparison part. The conversion part marks the sine wave outputted by the sine wave coder 4 as a vector on the x axis, and marks the cosine wave as a vector on the y axis. The comparison part judges tha anomaly happens when the vector deviates the threshold value in the radial direction or vector deviates the threshold value in the circumferential direction.
Description
Technical field
The present invention relates to a kind of coder abnormal detector detecting coder exception and the lift facility using coder abnormal detector.
Background technology
In the prior art, abnormal detector for the exception detecting the sinusoidal coder used when controlling position and the speed of electrical motor etc. has coder, A/D converting unit and arithmetic element, this coder is for generating as the first signal of the sinusoidal waveform of the output from abnormality detection object and having the secondary signal of the output of the object of the phase difference of pi/2 as from this first signal, this A/D converting unit is converted to digital signal by from the first signal of this coder and secondary signal, this arithmetic element the first digital signal value of this A/D converting unit and the second digital signal value are carried out square and calculate this square value and, arithmetic element operation result beyond close to the various precision because of coder and A/D converting unit of positive integer 1 and the scope of the error produced time, coder is detected as and there occurs abnormal (with reference to patent documentation 1)
At first technical literature
Patent documentation
Patent documentation 1: the flat 1-80817 publication of Japanese Patent Laid-Open
Coder is such as applied to lift facility, and it arranges the rotative speed that object is the electrical motor in order to detection and control winch.That is, detect actual speed by coder, the difference between this speed and current-order is converted into the torque instruction exported by the electrical motor of winch, comes outgoing current and the output voltage of control inverter thus., in the above-mentioned coder arranged together with inverter, because being subject to the impact of the noise (noise) of inverter, often having noise and being superimposed upon on its output voltage.When on the output voltage that noise is superimposed upon coder, control also can produce adverse influence to the equipment carried out according to the output signal of coder, therefore preferably correctly can detect noise., in the above prior art, two signals according to the sinusoidal waveform of coder output detect exception, but it cannot judge whether these two signals are in the state of noise overlap.
That is, such as be superimposed upon the occasion on sinusoidal waveform and cosine wave at noise with θ a, when computing is superimposed with the sum of squares of the signal value of these noises, only otherwise exceed the scope close with positive integer 1, such as can be regarded as the value in θ n, and cannot noise be detected.
Summary of the invention
The present invention makes in view of the actual conditions of above-mentioned prior art, the object of the present invention is to provide a kind of coder abnormal detector that can detect noise overlap effectively and the lift facility using coder abnormal detector.
To achieve these goals, the invention provides a kind of coder abnormal detector, it is the coder abnormal detector of the exception detecting sinusoidal coder, this sinusoidal coder exports along with the rotation of swivel to be had positive pole and these two polarity of voltages of negative pole or has certain deviation, and phase difference is each other the sinusoidal waveform of 90 degree and the biphase signaling of cosine wave, the feature of described coder abnormal detector is, there is conversion portion and rating unit, the described sinusoidal waveform exported by described sinusoidal coder is marked and drawed in x-axis as vector value by described conversion portion, described cosine wave is marked and drawed in y-axis as vector value, deviate from the occasion of threshold value and described vector value diametrically at described vector value and deviate from least one occasion in the occasion of threshold value in the circumferential, described rating unit is judged as there occurs exception.
According to said structure, can detect that the noise be superimposed upon on the output signal of sinusoidal coder is overlapping, thus reliability and the safety of equipment can be improved.
In addition, the present invention also provides a kind of lift facility using coder abnormal detector, and it has, inverter, this inverter is connected with power supply, is made up of multiple on-off element, the electrical motor of the winch be connected with this inverter, sinusoidal coder, this sinusoidal coder exports along with the rotation of this electrical motor to be had positive pole and these two polarity of voltages of negative pole or has certain deviation, and phase difference is each other the sinusoidal waveform of 90 degree and the biphase signaling of cosine wave, control setup, this control setup is connected with described inverter and described sinusoidal coder, by winch described in described inverter control, and is configured with the coder abnormal detector of the exception detecting described sinusoidal coder, lift car and counterbalanced weight, this lift car and counterbalanced weight are elevated by the hoist cable on the rope sheave of the described winch of described direct motor drive by being wound on, and brake equipment, this brake equipment is braked described rope sheave, the feature of described lift facility is, the described coder abnormal detector be formed in described control setup has conversion portion and rating unit, the described sinusoidal waveform exported by described sinusoidal coder is marked and drawed in x-axis as vector value by described conversion portion, described cosine wave is marked and drawed in y-axis as vector value, deviate from the occasion of threshold value and described vector value diametrically at described vector value and deviate from least one occasion in the occasion of threshold value in the circumferential, described rating unit is judged as there occurs exception.
According to said structure, can detect that the noise be superimposed upon on the output signal of sinusoidal coder is overlapping effectively by the coder abnormal detector be arranged in the control setup for controlling winch, thus reliability and the safety of equipment can be improved.
Feature of the present invention is also, on the basis of said structure, described control setup carries out investigation current lead-through to described inverter under the operating state of described brake equipment, judges that described sinusoidal coder is abnormal with or without generation, and carries out elevator starter compensatory control.
In general, the STCP starting compensatory of elevator controls to carry out according to the load detecting value of the load detecting sensor being arranged on lift car bottom.Load detecting sensor is according to the deflection output load detected value corresponding to carrying capacity of the vibration-proof rubber below lift car, when the deflection of vibration-proof rubber there occurs change because of the difference of environment for use, be difficult to carry out correct load detection, thus the STCP starting compensatory being difficult to carry out definitely lift facility controls.On the other hand, according to said structure, do not adopt load detecting sensor, but the STCP starting compensatory control of elevator is carried out according to the output signal of sinusoidal coder, so can detect that the noise be superimposed upon on the output signal of sinusoidal coder is overlapping definitely, while the reliability improving equipment and safety, accurate STCP starting compensatory can be realized.
Feature of the present invention is also, on the basis of said structure, described control setup carries out investigation current lead-through to described inverter under the operating state of described brake equipment, judge that described sinusoidal coder is abnormal with or without generation, and investigation current-order and motor current detected value are compared, judge described electrical motor and described inverter with or without generation extremely, and carry out elevator starter compensatory control.
According to said structure, when the investigation current lead-through making Weak current circulate to inverter, the state of sinusoidal coder can not only be confirmed, but also can synthetically confirm the state of electrical motor and inverter, can rate-determining steps be reduced, thus the good lift facility of responsibility can be realized.
Invention effect
According to coder abnormal detector of the present invention, can detect that the noise be superimposed upon on the output signal of sinusoidal coder is overlapping definitely, thus reliability and the safety of equipment can be improved.
According to the lift facility with coder abnormal detector of the present invention, can detect that the noise be superimposed upon on the output signal of sinusoidal coder is overlapping effectively by the coder abnormal detector be arranged in the control setup for controlling winch, thus reliability and the safety of lift facility can be improved.
Accompanying drawing explanation
Fig. 1 is the structural representation of the lift facility representing coder abnormal detector involved by one embodiment of the present invention and use this coder abnormal detector.
Fig. 2 is the signal waveforms of the output signal representing the sinusoidal coder shown in Fig. 1.
The output signal of the normal sinusoidal coder shown in Fig. 2 is marked and drawed the coordinate diagram obtained in x-axis and y-axis by Fig. 3.
Fig. 4 be the sinusoidal coder shown in Fig. 1 output signal on signal waveforms when being superimposed with noise.
The output signal being superimposed with the sinusoidal coder of noise shown in Fig. 4 is marked and drawed the coordinate diagram obtained in x-axis and y-axis by Fig. 5.
Fig. 6 is the diagram of circuit of the treatment step of the lift facility representing the coder abnormal detector shown in Fig. 1 and use coder abnormal detector.
Nomenclature
1 power supply
2 inverters
3 winchs
3a electrical motor
4 sinusoidal coder
5 current probes
6 control substrate
7 hoist cables
8 lift cars
9 counterbalanceds weight
Detailed description of the invention
Referring to accompanying drawing, embodiments of the present invention are described.
Fig. 1 is the structural representation of the lift facility representing coder abnormal detector involved by one embodiment of the present invention and use this coder abnormal detector.
Lift facility has: power supply 1; Inverter 2, this inverter 2 is connected with power supply 1, and is made up of multiple on-off element 2a; The electrical motor 3a of the winch 3 be connected with inverter 2; Sinusoidal coder 4, this sinusoidal coder 4 is arranged on electrical motor 3a, for the rotative speed of detection and control electrical motor 3a; Control substrate 6, this control substrate 6 is equipped with microcomputer, is connected with inverter 2 and sinusoidal coder 4, and be provided with current probe 5 in its input line; The rope sheave 3b of the winch 3 driven by electrical motor 3a; And lift car 8 and counterbalanced weight 9, this lift car 8 and counterbalanced weight 9 are elevated by the hoist cable 7 be wound on rope sheave 3b.
In lift facility, control substrate 6 while detecting actual speed by sinusoidal coder 4, obtain the output signal of current probe 5, detection speed and instruction speed is compared, both difference are scaled the torque instruction exported by the electrical motor 3a of winch 3 and current-order, and the comparative result according to the output signal of this current-order and current probe 5 carries out on/off control to the outgoing current of inverter 2 and output voltage (namely on-off element 2a).
Sinusoidal coder 4 as shown in Figure 2, have positive pole and these two polarity of voltages of negative pole, and phase difference is each other the sinusoidal waveform (i.e. A phase signals) of 90 degree and the biphase signaling of cosine wave (i.e. B phase signals) for exporting.In addition, sinusoidal coder 4 is coders that coder often revolves roughly output 2048C/T output of turning around, the output wave shape of voltage is sinusoidal wave shape change, the change of this sinusoidal waveform is obtained according to the bit accuracy (10 powers of 2) of the A/D converter of signal acquisition circuit substrate, can obtain the 10 powers accuracy of detection doubly of 2 of 2048C/T thus, its accuracy of detection is higher than pulsed coder.This lift appliance uses above-mentioned sinusoidal coder 4 to carry out STCP starting compensatory.That is, when elevator starter, detected the angle of rotation of electrical motor 3a by sinusoidal coder 4 accurately, carry out the direct torque of electrical motor 3a according to this detected value, the out-of-balance force of lift car 8 and counterbalanced weight 9 is compensated, to reduce starting vibration when drg just discharges.
In order to detect the exception of sinusoidal coder 4 effectively, also take following measure.Specifically, conversion portion and rating unit is formed by above-mentioned control substrate 6.The A phase signals exported by sinusoidal coder 4 is marked and drawed in x-axis as vector value by this conversion portion, B phase signals is marked and drawed in y-axis as vector value, this rating unit deviate from the occasion of threshold value and vector value diametrically at vector value and deviate from least one occasion in the occasion of threshold value in the circumferential, is judged as there occurs exception.That is, in the normal occasion of the action of sinusoidal coder 4, the waveform of A phase signals and B phase signals is the waveform shown in Fig. 2, when being marked and drawed in x-axis and y-axis as vector value by these waveforms, obtains the circular trace shown in Fig. 3.When detected vector value radial direction deviate from normal trace add error and the threshold value obtained time, be judged as there occurs exception.In addition, when sinusoidal coder 4 is normal, the vector value detected under specified states can not depart from threshold value in the circumferential, when this vector value deviate from the circumferential normal trace add error and the threshold value obtained time, when namely variation in the circumferential deviate from threshold value, be judged as there occurs exception.
Referring to the diagram of circuit shown in Fig. 6, coder abnormal detector for judging sinusoidal coder 4 exception is described and uses the treatment step of lift facility of coder abnormal detector.
As shown in step S1, even if in drg action during lift facility is remained on readiness for action, control substrate 6 also all the time the output signal of offset of sinusoidal ripple coder 4 carry out monitoring (step S2).That is, A phase signals sinusoidal coder 4 exported is marked and drawed in x-axis as vector value, and B phase signals is marked and drawed in y-axis as vector value, judge whether vector value deviate from threshold value diametrically with this, and judge whether vector value deviate from threshold value in the circumferential.Readiness for action is at lift facility, and when inverter 2 is in halted state, if control substrate 6 to detect that the output signal of sinusoidal coder 4 there occurs variation, be then judged as that encoder circuit there occurs fault in step s 12, or it is abnormal to there occurs connection.Elevator is made to stop in step s 13.
On the other hand, be in operating state at drg, and the output signal of sinusoidal coder 4 in allowed band time, control substrate 6 in step s3 phase angles data θ x is stored.After this, judge whether to drive by the calling of the side in car call and hall call in step s 4 which, when being judged as driving, in step s 5, under brakeage state, to the investigation that inverter 2 makes Weak current circulate, namely carry out investigation current lead-through inverter control.
The reason of as above method is adopted to be that inverter easily noise occurs, so be now suitable for investigating inverter 2 near zero current controls.In addition, because Weak current is set to make electrical motor Driving Torque, " value of braking torque, so electrical motor can not rotate substantially when carrying out investigation current lead-through.Further, control the output signal that substrate 6 monitors sinusoidal coder 4 in step s 6, judge that it is abnormal with or without generation.Such as, when sinusoidal coder 4 is normal, the waveform of A phase signals and B phase signals is the waveform shown in Fig. 2, and A phase signals during phase angle θ using A, A of Fig. 2 ' shown is marked and drawed in x-axis as vector value, B phase signals is marked and drawed in y-axis, obtains the waveform shown in arrow a of Fig. 3.Vector value size is diametrically according to x1
2+ y1
2obtaining, is x1 in the occasion of arrow a
2+ y1
2=I
2, its threshold value s adding error with normal trace and obtain is consistent.
On the other hand, B, B of such as Fig. 4 ' shown in, when at phase angle being θ 1, A phase signals is superimposed with the noise of x2, B phase signals is superimposed with the noise of y2, A phase signals under this state is marked and drawed in x-axis as vector value, and when the B phase signals under this state being marked and drawed in y-axis as vector value, obtains the waveform shown in arrow b of Fig. 5.Vector value size is diametrically according to x2
2+ y2
2obtaining, is x2 in the occasion of arrow b
2+ y2
2" I2, (be greater than) normal trace added error and the threshold value s obtained, so be judged as there occurs exception because vector value departs from diametrically.In addition, be x2 at the vector value detected
2+ y2
2" I
2occasion, namely vector value departs from diametrically and (has been less than) normal trace and adds error and the occasion of the threshold value s obtained, and is judged as equally there occurs exception.The shown noise of the B of Fig. 4, B ' also can detect in above-mentioned published prior art.
; as Fig. 4 C, C ' shown in; when at phase angle being θ 2; the A phase signals being in sinusoidal coder 4 is superimposed with the noise of x3; and in B phase signals, be superimposed with the occasion of the state of the noise of y3, if adopt above-mentioned published prior art, then when the sum of squares of the signal value calculated does not exceed the scope close to positive integer 1; such as by the value process of the θ 3 as Fig. 4, thus noise cannot be detected., the A phase signals of this state is being marked and drawed in x-axis as vector value, and when the B phase signals of this state being marked and drawed in y-axis as vector value, obtaining arrow c and the waveform shown in arrow d of Fig. 5.Now, detect phase angles data θ y during investigation current lead-through, the phase angles data θ x stored in step s3 and this phase angles data θ y is compared.That is, relative to the phase angles data θ 2 stored under brakeage state in step s3, when being θ 3 according to the phase angles data that detects of investigation current lead-through, calculate the difference of θ x (θ 3)-θ y (θ 2), and judge by this difference shown in the arrow e of Fig. 5 whether in allowed band.That is, when the threshold value that vector value obtains beyond normal trace adds error in the circumferential, be judged as the exception having occurred inverter noise overlap.
And, in step s 6, when the investigation current lead-through making Weak current circulate to inverter 2 under brakeage state, investigation current-order and motor current detected value are compared, and the driving condition of electrical motor and inverter is confirmed.When the comparative result investigating current-order and motor current detected value represents that both are inconsistent, likely such as cause excess current because of the short trouble of on-off element, or undercurrent is caused because of clear failure, or cause excess current, undercurrent because the mistake of inverter control circuit exports, or cause excess current etc., so be now judged as there occurs exception because of the earth fault of electrical motor.When being judged as in step s 6 there occurs abnormal, entering step S10, while investigation current lead-through inverter control is carried out in stopping, carrying out the incremental count investigating tentative number of times.
Then, judge tentative number of times in step s 11 whether within specified value, its reason is, having in the remarkable action of the overlapping and inverter 2 of the noise on code device signal is much momentary exception.When being judged as that tentative number of times does not also reach specified value in step s 11, again repeatedly perform above-mentioned steps, the state of offset of sinusoidal ripple coder 4, inverter 2 and electrical motor 3a judges.6 times/10 minutes or 12 times/10 minutes according to abnormality detection level, such as, can be set as threshold value by described tentative number of times.Thereby, it is possible to while detecting severely subnormal effectively, the result of abnormality detection represent abnormal not serious time, do not make elevator stop at once, but repeated multiple timesly to investigate, preferentially passenger can be moved to the destination floor of expectation thus.
On the other hand, when being judged as not having exception in step s 6, enter step S7, the current lead-through that winds up a probe inverter control, carries out elevator starter control in step s 8, namely carries out STCP starting compensatory control.In this STCP starting compensatory controls, gone out the angle of rotation of electrical motor 3a by sinusoidal coder 4 high precision test, carry out the direct torque of electrical motor 3a according to this detected value, thus the out-of-balance force of lift car 8 and counterbalanced weight 9 is compensated.After this, discharge drg in step s 9 and make elevator start to travel, number of times zero will be tried simultaneously, and store the data of maximum tentative number of times.The object storing the data of maximum tentative number of times is the situation in order to confirm noise overlap when safeguarding.
As mentioned above, coder abnormal detector of the present invention is the coder abnormal detector of the exception detecting sinusoidal coder, this sinusoidal coder exports along with the rotation of swivel to be had positive pole and these two polarity of voltages of negative pole or has certain deviation, and phase difference is each other the sinusoidal waveform of 90 degree and the biphase signaling of cosine wave, the feature of described coder abnormal detector is, there is conversion portion and rating unit, the described sinusoidal waveform exported by described sinusoidal coder is marked and drawed in x-axis as vector value by described conversion portion, and described cosine wave is marked and drawed in y-axis as vector value, described rating unit deviate from the occasion of threshold value and described vector value diametrically at described vector value and deviate from least one occasion in the occasion of threshold value in the circumferential, be judged as there occurs exception.
According to said structure, can detect that the noise on the output signal being superimposed upon sinusoidal coder 4 is overlapping effectively, thus reliability and the safety of lift facility can be improved.
In addition, lift facility of the present invention has; Inverter 2, this inverter 2 is connected with power supply 1, is made up of multiple on-off element 2a; The electrical motor 3 of the winch 3 be connected with this inverter 2; Sinusoidal coder 4, this sinusoidal coder 4 exports along with the rotation of this electrical motor 3a to be had positive pole and these two polarity of voltages of negative pole or has certain deviation, and phase difference is each other the sinusoidal waveform of 90 degree and the biphase signaling of cosine wave; Control setup, this control setup is connected with inverter 2 and sinusoidal coder 4, controls winch 3 by inverter 2, and is configured with the coder abnormal detector of the exception detecting sinusoidal coder 4; Lift car 8 and counterbalanced weight 9, this lift car 8 and counterbalanced weight 9 are elevated by the hoist cable 7 be wound on the rope sheave 3b of the winch 3 driven by electrical motor 3a; And brake equipment, this brake equipment is braked rope sheave 3b, the feature of this lift facility is, the described coder abnormal detector be formed in control setup has conversion portion and rating unit, the sinusoidal waveform exported by sinusoidal coder is marked and drawed in x-axis as vector value by this conversion portion, and cosine wave is marked and drawed in y-axis as vector value, deviate from the occasion of threshold value and vector value diametrically at vector value and deviate from least one occasion in the occasion of threshold value in the circumferential, rating unit is judged as there occurs exception.
According to said structure, the noise that can be detected effectively on the output signal being superimposed upon sinusoidal coder 4 by the coder abnormal detector be arranged in the control setup for controlling winch 3 is overlapping, thus can improve reliability and the safety of lift facility.
Feature of the present invention is also, on the basis of said structure, control setup carries out investigation current lead-through to inverter 2 under the operating state of brake equipment, judges that sinusoidal coder 4 is abnormal with or without generation, and carries out elevator starter compensatory control.
In general, the STCP starting compensatory of elevator controls to carry out according to the load detecting value of the load detecting sensor being arranged on lift car bottom.Load detecting sensor is according to the deflection output load detected value corresponding to carrying capacity of the vibration-proof rubber below lift car, when the deflection of vibration-proof rubber there occurs change because of the difference of environment for use, be difficult to carry out correct load detection, thus the STCP starting compensatory being difficult to carry out definitely lift facility controls.On the other hand, according to said structure, do not adopt load detecting sensor, but the STCP starting compensatory control of elevator is carried out according to the output signal of sinusoidal coder 4, so can detect that the noise on the output signal being superimposed upon sinusoidal coder 4 is overlapping definitely, while the reliability improving equipment and safety, accurate STCP starting compensatory can be realized thus.
Feature of the present invention is also, on the basis of said structure, control setup carries out investigation current lead-through to inverter 2 under the operating state of brake equipment, judge that sinusoidal coder 4 is abnormal with or without generation, and investigation current-order and motor current detected value are compared, judge electrical motor 3a and inverter 2 with or without generation extremely, and carry out elevator starter compensatory control.
According to said structure, when the investigation current lead-through making Weak current circulate to inverter 2, the state of sinusoidal coder 4 can not only be confirmed, but also can synthetically confirm the state of electrical motor 3a and inverter 2, can rate-determining steps be reduced, thus the good lift facility of responsibility can be realized.
Claims (4)
1. a coder abnormal detector, it is the coder abnormal detector of the exception detecting sinusoidal coder, this sinusoidal coder exports along with the rotation of swivel to be had positive pole and these two polarity of voltages of negative pole or has certain deviation, and phase difference is each other the sinusoidal waveform of 90 degree and the biphase signaling of cosine wave, the feature of described coder abnormal detector is
There is conversion portion and rating unit, the described sinusoidal waveform exported by described sinusoidal coder is marked and drawed in x-axis as vector value by described conversion portion, described cosine wave is marked and drawed in y-axis as vector value, deviate from the occasion of threshold value and described vector value diametrically at described vector value and deviate from least one occasion in the occasion of threshold value in the circumferential, described rating unit is judged as there occurs exception.
2. use a lift facility for coder abnormal detector, it has; Inverter, this inverter is connected with power supply, is made up of multiple on-off element; The electrical motor of the winch be connected with this inverter; Sinusoidal coder, this sinusoidal coder exports along with the rotation of this electrical motor to be had positive pole and these two polarity of voltages of negative pole or has certain deviation, and phase difference is each other the sinusoidal waveform of 90 degree and the biphase signaling of cosine wave; Control setup, this control setup is connected with described inverter and described sinusoidal coder, by winch described in described inverter control, and is configured with the coder abnormal detector of the exception detecting described sinusoidal coder; Lift car and counterbalanced weight, this lift car and counterbalanced weight are elevated by the hoist cable on the rope sheave of the described winch of described direct motor drive by being wound on; And brake equipment, this brake equipment is braked described rope sheave, and the feature of described lift facility is,
The described coder abnormal detector be formed in described control setup has conversion portion and rating unit, the described sinusoidal waveform exported by described sinusoidal coder is marked and drawed in x-axis as vector value by described conversion portion, described cosine wave is marked and drawed in y-axis as vector value, deviate from the occasion of threshold value and described vector value diametrically at described vector value and deviate from least one occasion in the occasion of threshold value in the circumferential, described rating unit is judged as there occurs exception.
3. the lift facility using coder abnormal detector as claimed in claim 2, is characterized in that,
Described control setup carries out investigation current lead-through to described inverter under the operating state of described brake equipment, judges that described sinusoidal coder is abnormal with or without generation, and carries out elevator starter compensatory control.
4. the lift facility using coder abnormal detector as claimed in claim 2, is characterized in that,
Described control setup carries out investigation current lead-through to described inverter under the operating state of described brake equipment, judge that described sinusoidal coder is abnormal with or without generation, and investigation current-order and motor current detected value are compared, judge described electrical motor and described inverter with or without generation extremely, and carry out elevator starter compensatory control.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013124050A JP6193000B2 (en) | 2013-06-12 | 2013-06-12 | Encoder abnormality detection device and elevator apparatus using encoder abnormality detection device |
| JP2013-124050 | 2013-06-12 |
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| Publication Number | Publication Date |
|---|---|
| CN104229578A true CN104229578A (en) | 2014-12-24 |
| CN104229578B CN104229578B (en) | 2016-12-07 |
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| CN201410244459.6A Active CN104229578B (en) | 2013-06-12 | 2014-06-04 | Encoder abnormal detector and the lift facility of use encoder abnormal detector |
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| CN108204830A (en) * | 2017-11-28 | 2018-06-26 | 珠海格力节能环保制冷技术研究中心有限公司 | The compensation method of phase deviation and device |
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Also Published As
| Publication number | Publication date |
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| CN104229578B (en) | 2016-12-07 |
| JP2014240817A (en) | 2014-12-25 |
| JP6193000B2 (en) | 2017-09-06 |
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