JPS60200792A - Controller of elevator - Google Patents

Abstract

PURPOSE:To continuously operate an elevator even when a pulse width modulation signal generator becomes defective by providing a signal malfunction detector for detecting the output malfunction of the signal generator. CONSTITUTION:A signal malfunction detector 17 for detecting the output malfunction of a pulse width modulation signal generator 15, a relay 18 energized when the detector 17 does not detect the output malfunction and deenergized when detecting the output malfunction, and a normally open contact 18a of the relay are inserted between a pulse width modulation signal generator 13 and a pulse width modulator 16. Thus, when the output malfunction is detected, the pulse width modulation signal generator is separated to convert from a triangular wave comparison to an instantaneous value comparison to continuously operate an elevator even when the pulse width modulation signal generator becomes defective.

Description

[Detailed description of the invention] [Kuyu's technique and 1a distribution] Akira Motomoto used 17 barter to install a guide rug for car side IIIJ on the 11f wholesale device of the elevator.
- to mow.

[Conventional magic]

This German conventional device is shown in Figure 1, in addition to the third and first father (1), the third father is the converter (2).
The capacitor (3-) is connected to the direct current, wiped, and the inverter (4) is connected to the inverter (4) with the capacitor (3-). Pulse width Omachi circuit (16a), (16b eight (16C) pace driver 1)
When Bu 1 Lugo hit the sword 1, was it another style of Machi Henke Otsuji Hen Shu He Kakeru? d special unit movement rule (strengthens to 6n. Trout guiding force (
6], Q1 Speed Mata Shosemu (6) and Sheep (7) are in the wind, and in addition, Rono (8) is wound on Sheave (υ), and Kato (9) is on one end of B5. , and the other end of the fishing platform 2 (tQI) are added together.In addition, the phase current of the i-sensing current (5) is the current of the fishing platform (At-Kota-ki (11)
a), (11bJ.

(Added by 11.)

On the other hand, an angular velocity command ω1 as a speed reference signal corresponding to the running pattern of the elevator, an actual angular velocity signal ω proportional to the actual car speed of the speed detector (6), and a stray flilJ control calculation circuit ((2) is provided.

In addition to this, the deviation between the angular velocity concealment command ωr2 and the actual angular velocity signal will become smaller.') Torque? The current command value lUHi v + 1□ to be generated in the visiting electric rock (5) is fully calculated.

Next, these DC command values 'IJ" t l v"
, I W* are attenuators (13a), (13b), (1
3, the flow detector (11a), (11b), (1
1 deba, i.e. g 4' electric 1 blow (5) 1
Next, we can compare each phase with the μ current 1゜ + lv + 1□, and the traveling part is the amplifier (14a),
(14b).

(by 14
6a,).

(16b), (16 ri ni 7JLl eranru. na 2, m
g mountain 1” 11141 m N-circuit (I21, reduced $
4-6i (13a), (13bL (13s2.J:
and amplifiers (14aL (14b,), (14SVC, J:
The instantaneous value ratio is 4! ! It consists of two parts.

Here, pulse 11@f 1.11 circuit (16a),
(16bL (16c) is a triangular wave-like pulse width modulation No. 18 PwM of a constant frequency output from the pulse width modulation signal generation circuit (to) and the above amplifiers (14a) to (14b).
+ (Compare the output of 14 and perform pulse width modulation,
The pulse signal is used as the base drive N of the inverter (4).
The pulse width modulation 1st signal light generation circuit 051'J
? The detailed configuration and operation of the pulse width modulation circuit (16) and pulse width modulation circuit (16) will be explained below.

Figure 2 is a connection diagram of the pulse width modulation signal generation circuit (4), which outputs a triangular wave-like pulse width modulation signal vP7□.
5c), (a comparator (15a) that compares the voltage divided by 15 dJ with the ground 'Ia, constant), and a current limiting resistor (15bQ) that compares the positive and negative law sum output voltage of the comparator (15a,). Zener voltage of Zener diode (15g) and diode (15e) and (15j,) or diode (1
A limiter circuit that generates one positive and negative voltage determined by the intraocular pressure of (5f) and (15h), and a resistor (15k) 2 and a capacitor (15k) to integrate the one positive and negative voltage of the limiter circuit. The operator jW with the constant of integration determined by
It consists of an integrator using a width transducer (15n).

Here, when the comparator (15a) outputs the full positive saturation voltage, this saturation voltage is clipped to a certain positive market voltage by the limiter circuit, and divided by 0 by the next stage integrator. The input to this integrator is the inverting input 01l of the operational amplifier (15n).
Since the integrator output is applied to the input and the inverse inertia ll'
In the case of a positive input, a constant negative slope voltage is generated. When the integrator output of this shell overlaps with the Hf foot, the resistance (
15c), (15d) and applied to the non-inverting input of the comparator (15a) becomes lower than the surface potential, so that the output of the comparator (15a) becomes positive. The output is inverted from the saturation voltage to the negative saturation voltage. As a result, the human input to the integrator instantaneously reverses to a constant negative voltage, and the integrator output, which had been changing at a negative one-step slope, completely reverses and begins to change at a positive one-step slope. After that, by repeating the same action, a constant frequency pulse width Kocho Gogo■
A7□ is generated, and the pulse +@i m circuit (16a)
, (16b), (16c).

FIG. 5 is a wiring diagram of the 841-minute pulse width modulation circuit (16a), in which the ■ phase component (16b) and the W phase component (16c) are omitted because they have exactly the same configuration. It generates a base drive signal for the U-phase transistor of one inverter in response to the c-shaped pulse width modulation signal ■ and the output WM of the amplifier (14a), and the pulse width modulation signal ■
A comparator (16d) that completely compares P□ with the output of the aforementioned amplifier (14a), and the ratio I? of C? ! A face voltage level conversion circuit (16e) converts the output of No. 2 (16d) to the logic circuit level.
) and t output by this voltage level conversion circuit (16e).
Rising all-out resistance from rLJ to "H" of i6 burial board (
161f input capacitor (161g) or resistor (i
A delay circuit (16f) that delays freezing by a predetermined time with a 62f capacitor (162g) 'J? Yobi (16g)
The outputs of these delay circuits are connected to an inverter (marked 4J).
'Amplifier to amplify power (16h)'J=-
Yobi (16j) To'T: M1m long.

Here, as shown in FIG. 4, the amplifier (14a) 7
) output ■, 4 and the pulse width modulation 1g signal ■PwM are applied to the comparator (16eL), a positive 'voltage between ■, 4a>■PWM is output, and this is the voltage level conversion circuit (16eL). ) is set to logic 1g, so that the level conversion circuit (16e) outputs a nox signal 169 shown in FIG. 4 (g)). Next, when this pulse signal 169 is applied to the delay circuit (16f), a signal of the opposite logic via the NOT gate (161d), that is, a high sign shown in tc+ in FIG. 16g) VC added. Delay circuit (16f
) and (16g) delay the rise time of the capacitor input signal from ILJ to "H" by 21 hours.
, 6h is increased) The pulse No. 1 shown in FIG. are output respectively.

These pulses 1 are caused to trace V'C, etc. to transistors (not shown) connected in series, which sub-arm the arms of the 6H2, 6H2, and TRI inverters (4).

2, pulse duck modulation circuit ■ phase (161)) 2 and W phase (16 is upper He 'J't1 width gffl (1
Instead of the output of 4a), the phase is shifted by 1200 degrees.
The outputs of the 1ζ amplifiers (14b) and (14C) are output.

In this way, a father current with a specified amplitude and frequency is supplied to the conductive motor (5), and this induction motor (5) generates a torque proportional to the current to move the elevator up and down.

Generally, when pulse width modulation is performed, harmonic current flows through the induction motor, which tends to generate noise.

Therefore, in this case, by performing pulse width modulation in comparison with a triangular wave carrier, the frequency band in which noise occurs is kept approximately constant, and noise reduction processing is performed.7. ``This method is being adopted.

In such a conventional elevator control device, the pulse width may change due to the failure of the pulse width modulated signal light generation N path. A triangular wave signal is marked on circuit A) If a situation occurs where there is no JOzen,
The pressure of the comparator (16d) becomes positive and saturates to a constant pressure of the shell, and the inverter (4) becomes unable to operate. ! Excessive blood flow current may flow in the machine (5), or the sufficient torque may not be obtained.

As in C, the safety circuit operates when the electric rock is overcurrent or insufficient torque causes the elevator to come to an emergency stop. , a so-called "ganume" situation occurs in which the visitor is trapped in the VC car.

[Placement of invention]

This invention was made for the purpose of eliminating the above-mentioned defects,
A No. 13 abnormality detection circuit detects whether the pulse width variation A1 signal generation circuit is generating all the required signals, and this information signal abnormality detection circuit detects an output abnormality of the pulse width change A1 signal generation circuit. When this happens, a switching device is added to switch the pulse width modulation signal generation circuit from the pulse width modulation circuit and switch from the full triangular wave to the instantaneous value comparison. This paper proposes an elevator system that can maintain operation even if the pulse width modulation No. 1g generation circuit fails.

[Examples of the invention]

, 85 is a block circuit diagram showing the 41 circuit structure of one embodiment of Maki G Ming, and is the same as the element illustrated in Figure 1.
For c, the symbol ``-'' is added, and the continuation of ``7'' is omitted.

And here, pulse width modulation 1g generation circuit (15)
A signal abnormality circuit (17) detects a pressure abnormality in the signal abnormality circuit (17), and this signal abnormality detection circuit (17) is energized when an abnormality in the output of the pulse width generating circuit (15) is not detected. A new relay (18) is added as a switching device that is deenergized when detecting n.
kA (18a) is the pulse width adjustment signal generation circuit (with the phrase)
The point inserted between the pulse width modulation circuit (16th line) is the first point.
It is different from the illustration.

Figure 6 is a circuit diagram showing the failure of the Tokugakusen regular detection circuit (u7), the emitter is grounded and the collector is a resistor (17).
f) When the base is resistive (17e), the base is
7b) A transistor (17g) connected to the negative power supply (17g) through the base of this transistor (17g).
A switching circuit consisting of a diode (17d) for reverse voltage protection with 7L of VC continuity between emitters and a resistor (17a,) that inputs a pulse width of No. 16 to the base of the transistor (17g), and a resistor ( 17j) k-benjite shojima gen
2, (17h) I/(: connection, this resistance (17j)
forms a time constant circuit with a capacitor (17k),
When a trigger pulse is applied to the terminal A, the time corresponding to this time constant T is held at the terminal Q.
An oscillation circuit consisting of a laser beam (171) and an emitter are grounded,
The base is a resistor (17p) and the upper d pin timer (17p)
1) Transistor (17s) connected to output terminal Q
It consists of a relay drive circuit.

Hereinafter, the operation of this embodiment will be explained with reference to FIG. 1 with all new elements added.

First, pulse width modulation No. 16 ■PwM is greater than the required foot pressure.
The transistor (17g) performs a switching operation, and a trigger pulse having a cycle corresponding to the helix cycle of the triangular wave described above is applied to the terminal A of the transistor (171). When determined by the time constant of the timer (1;/1, 1, resistor (17j, lj, -) and capacitor (17k), the output p-child Q is held at "H" by one river T. In this case, If the time Ti triangle is made slightly larger than the period of return of the gland,
Pulse duck modulation old name optical generation circuit μs predetermined triangular wave 16
The output of 171, 1 is kept at [nJ, and the transistor (17B) is kept in the on state 7'L. Then, this transistor (17S)
is held in the on state, the relay μs] is energized and the pulse width modulated signal is transmitted via the normally open contact (181).
PWM is applied to the pulse width modulation circuit (167).

On the other hand, if the pulse width modulation code generation circuit (15) stops generating a triangular wave signal due to a failure etc., the switching (B) path will not operate and no trigger pulse will be generated.Therefore, the output of the timer (171) will be rJ. becomes a transistor (
17e) is turned off and deenergizes the relay (]8). As a result, the pulse width modulation circuit (18aJ) is applied a number of times to the pulse width modulation signal generation (b) path (5).
16).

In this way, the pulse width modulation circuit (Ut), which has conventionally performed pulse width modulation by comparison with the triangular wave No. 1d, can perform pulse width modulation by softening the IN time value ratio with the error signal. Key 1d Thoughts: Is there an elevator even in the JM machine where the circuit is broken? It is possible to continue rolling.

13. Due to the issue of women's affairs, the basket is brought into the Pure Land once, and then the place where Tangihun is brought up @vc up hα relay punishment contact point ・16 is put in the elevator control device 10,000, this contact point A sequence may be created in advance such that the elevator neck embedding tray that receives the signal generates all 1 non-electric stop signals, and further generates 1 non-electronic stop signal after stopping.

〔Effect of the invention〕

As is clear from the above explanation, the present invention includes a signal abnormality detection circuit that detects an output abnormality of a pulse width modulation signal generation circuit, and a signal abnormality detection circuit that detects an output abnormality of a pulse width modulation signal generation circuit, and a signal abnormality detection circuit that detects an output abnormality of a pulse width modulation signal generation circuit. Fault in pulse width modulation 1g generation circuit (since it is equipped with a switching device that can be disconnected and switched from triangular wave comparison to instantaneous value comparison)
Elevator for C? Able to drive continuously.

[Brief explanation of the drawing]

Fig. 1 is a block circuit diagram showing the overall structure of the conventional device, and Fig. 2 shows the detailed configuration of the main elements of the device. Circuit diagram, time chart for the continued operation of the same device in the East 41st Ward, Fig. 5 A block circuit diagram showing the overall sub-generation of one embodiment of the main brother Akira, Fig. 6 Q. FIG. 2 is a detailed circuit diagram of an example Wangan element. (4): Inverter (6) = 2'%' ton excitation (9)
:Kato (Ki: Speed control calculation circuit (13aL (13b)
, (13c): Subtractor ga): Pulse width modulation signal generation circuit (16a), (16b), (16C): Pulse width modulation circuit α7): Information signal abnormality detection circuit (18): Relay as a switching device Note that the same symbols in the percentage figures indicate the same or different parts. Agent Person Iwa Tsutsumi Figure 2 Figure 3 Figure 4 -n-! i Figure 6 Procedural Amendment (Voluntary) 11. O [1 Kamo, 4,23゜Mr. Commissioner of the Japan Patent Office 1, Indication of the case, Patent Application No. 59-57885, V. 2,
Name of the invention Elevator control device η 3, Part 1 of the person making the amendment, Representative Hitoshi Katayama, Agent 5, Supplementary J.T. Subject specification, Detailed explanation of the invention of 14. 6. Details of correction i, page 33, line 6, “Angular velocity command ω,
" is corrected to [angular velocity command ωr*J. Below

Claims (1)

[Claims] The inverter that supplies the inverter during the father flow to the induction '1 cap surface for the cage, ~ 4 motions, and the inverter that supplies the wire to the front of the cage, and the horse cage's J Ne Tomoki Haya 2 and speed delivery 1: lj III! i'c shows that the current command 1m1t of the current command 1m1t of the trough phase due to the induction of the U force and the current command 11Ii2 and the 1@difference of the Japanese-style room style flow is the instant 1 time domain ratio part and , the triangular drum-shaped pulse 1 the same ko-tone gokokinbensei ding-pulse 1 the shabu-like 1 divination teacher's mouth path, and this pulse] By comparing the Mtl gt < inverter with the pulse 1 inversion circuit which modulates the pulse radiation 111 IJ 11 I 4 I, the elevator circuit 11 i'm device Kai 2 and rm
M Pipulus 1 Yotsucho Fukufang 46 The power of the raw circuit is the same, the information that is used in the law is abnormal Binden circuit, and this thing's name is different' Hatakesen circulation 1
)・6 causes an output abnormality of the 1j IJ pulse 1 commercial preparation No. 16 generation cycle, this pulse width
ih total 14tl ij1 In addition to separating it from the pulse width conversion θω circuit, this pulse modulation circuit is also equipped with a switching device that switches from triangular shielding ratio to instantaneous value comparison. Equipped with all features of toll elevator tniJ control device.