CN101132980A - Electromagnetic brake control device - Google Patents

Electromagnetic brake control device Download PDF

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Publication number
CN101132980A
CN101132980A CNA2006800017985A CN200680001798A CN101132980A CN 101132980 A CN101132980 A CN 101132980A CN A2006800017985 A CNA2006800017985 A CN A2006800017985A CN 200680001798 A CN200680001798 A CN 200680001798A CN 101132980 A CN101132980 A CN 101132980A
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CN
China
Prior art keywords
mentioned
brake coil
release movement
control
value
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CNA2006800017985A
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Chinese (zh)
Inventor
木川弘
上田隆美
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to CNA2006800017985A priority Critical patent/CN101132980A/en
Priority claimed from CN201410181259.0A external-priority patent/CN103922238B/en
Publication of CN101132980A publication Critical patent/CN101132980A/en
Pending legal-status Critical Current

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Abstract

An electromagnetic brake control device where a control device body releases an electromagnetic brake device by exciting a brake coil to cause it to attract an armature. The control device body can detect the start of release operation of the armature by the attraction by the brake coil. When the start of the release operation is detected, the brake device body reduces the attraction force occurring in the brake coil to a level less than that occurs before the start of the release operation.

Description

Electromagnetic brake control device
Technical field
The present invention relates to electromagnetic brake control device that the excited state of the brake coil of the electromagnetic braking apparatuses such as brake gear of for example elevator is controlled.
Background technology
In electromagnetic braking apparatus in the past, use makes the excitation current instruction of brake coil be increased to the excitation current instruction unit of predefined value gradually, and armature impacts electromagnet magnetic field and the impact sound (for example with reference to patent documentation 1) that produces when being reduced in drg thus and discharging.
Patent documentation 1 Japanese kokai publication hei 9-267982 communique
But, in above-mentioned electromagnetic braking apparatus in the past, owing to merely the exciting current of brake coil is increased gradually, so during the electromagnet that constant is bigger in use, the release movement time is quite long.And, do not wait over time owing to consider the deviation of deviation, electromagnet characteristic of spring force of deviation, retarding spring in gap between electromagnet and the armature and they, so can not stablize the effect that obtains to reduce impact sound.
Summary of the invention
The present invention proposes in order to address the above problem, and its purpose is, a kind of long-timeization that can suppress the drg release movement is provided, and the electromagnetic brake control device of the impact sound when stably reducing drg and discharging.
Electromagnetic brake control device of the present invention has the control setup main body, this control setup main body excitation brake coil makes brake coil attract armature, thereby the electromagnetic braking apparatus is discharged, the control setup main body can detect the beginning of the release movement of the armature that the attraction by brake coil produces, when detecting release movement and begin, compare before release movement begins, reduce the attractive force that results from brake coil.
In addition, electromagnetic brake control device of the present invention has the control setup main body, its excitation brake coil makes brake coil attract armature, thereby the electromagnetic braking apparatus is discharged, time after the excitation of control setup main body instrumentation brake coil begins, after beginning, the excitation of brake coil during through predefined time, increases the attractive force of brake coil.
Description of drawings
Fig. 1 is the constructional drawing of overview of the lift appliance of expression embodiment of the present invention 1.
Fig. 2 is the block scheme of the structure of the control setup main body in the presentation graphs 1.
Fig. 3 is the diagram of circuit of the action of control setup main body when drg discharges in the presentation graphs 1.
Fig. 4 is the diagram of curves of variation of variation and the electric current that flows through brake coil of the current-order of the control setup main body in the presentation graphs 1.
Fig. 5 is the action when drg discharges of armature in the presentation graphs 1 and the diagram of curves of the variation of the voltage instruction of drg when discharging.
Fig. 6 is the block scheme of control setup main body of the lift appliance of expression embodiment of the present invention 2.
Fig. 7 is the diagram of circuit of the action of control setup main body when drg discharges in the presentation graphs 6.
Fig. 8 is the action time opening of the gap/pressing force compensation section in the presentation graphs 6 and the diagram of curves of the relation between the control command value.
Fig. 9 is the block scheme of control setup main body of the lift appliance of expression embodiment of the present invention 3.
Figure 10 is the diagram of circuit of the action of control setup main body when drg discharges in the presentation graphs 9.
Figure 11 is the block scheme of control setup main body of the lift appliance of expression embodiment of the present invention 4.
Figure 12 is the diagram of circuit of the action of control setup main body when drg discharges among expression Figure 11.
Figure 13 is the block scheme of control setup main body of the lift appliance of expression embodiment of the present invention 5.
Figure 14 is the diagram of circuit of the action of control setup main body when drg discharges among expression Figure 13.
The specific embodiment
Below, with reference to description of drawings preferred implementation of the present invention.
Embodiment 1
Fig. 1 is the constructional drawing of overview of the lift appliance of expression embodiment of the present invention 1.In the drawings, car 1 and counterweight 2 are suspended in the hoistway by main rope 3, by propulsive effort lifting in hoistway of winch 4.
Winch 4 has: the drive pulley 5 of the main rope 3 of reeling; Make the electrical motor 6 of drive pulley 5 rotations; Follow advancing of car 1, with the brake wheel 7 as the drg swivel of drive pulley 5 rotations; And the electromagnetic braking apparatus 8 that the rotation of drive pulley 5 is braked.
Electromagnetic braking apparatus 8 has: the brake shoe 9 that contacts/leave with brake wheel 7; With brake shoe 9 bonded assembly armatures 10; With brake shoe 9 by the retarding spring 11 that is pressed on the brake wheel 7; With the electromagnet 11 that armature 10 disposes in opposite directions, its generation makes brake shoe 9 overcome the spring force of retarding spring 11 and leaves the electromagnetic attraction of brake wheel 7; And detection armature 10 is displaced to the release detector switch 12 of the situation of full releasing position.In electromagnet 11, be provided with brake coil 13.
Come the excited state of control brake device coil 13 by control setup main body 14.Be transfused to control setup main body 14 from the detection signal that is used to detect to the current probe 15 of the current value of brake coil 13 energisings.
Fig. 2 is the block scheme of the structure of the control setup main body 14 in the presentation graphs 1.In the drawings, current-order generating unit 16 releases order according to drg, produces the current-order that makes current direction brake coil 13.Be transfused to current control division 17 from the current-order of current-order generating unit 16 with from the detection signal of current probe 15.It is voltage instruction that current control division 17 produces the instruction relevant with the magnitude of voltage that imposes on brake coil 13, so that the actual current value of brake coil 13 is consistent with the value of current-order.
From the voltage instruction of current control division 17 via current limiter 18 input brake coils 13.And, carry out differential from the value of the voltage instruction of current control division 17 in differential portion 19, import release movement test section 20 then.Release movement test section 20 compares the output and the pre-set threshold of differential portion 19, detects the beginning of the release movement (displacement) of armature 10 thus.That is, release movement test section 20 changes the release movement that detects armature 10 according to the time of the value of voltage instruction.
When detecting the release movement of armature 10, this information is from release movement test section 20 received currents instruction adjusting portion 21 and period test section 22.Current-order adjusting portion 21 changes the value of current-order and sends to current control division 17 according to the information from release movement test section 20.Specifically, current-order adjusting portion 21 begins to reduce before the attractive force that results from brake coil 13 than release movement when the beginning that detects release movement.
The time (period) that the release movement of 22 pairs of armatures 10 of period test section rises when beginning is carried out timing.And timer 23 releases order according to drg, and the time of rising when the excitation of brake coil 13 is begun is carried out timing.
When rising through predefined time T end when the excitation of brake coil 13 begins, control setup main body 14 stops the current-order of current-order adjusting portion 21 regulates the attractive force that brake coil 13 is produced before reducing.And when rising through predefined time T cend when the release movement of armature 10 begins, control setup main body 14 stops the current-order of current-order adjusting portion 21 regulates the attractive force that brake coil 13 is produced before reducing.
Control setup main body 14 is located in the elevator control gear of the running of controlling car 1.Elevator control gear has possess arithmetic processing section (CPU), storage part (ROM, RAM and hard disk etc.), and the control panel (not shown) of signal input and output portion.The function of control setup main body 14 realizes by this control panel.Therefore, in the storage part of control panel, store the program that is used to realize above-mentioned functions.
Below, action is described.Fig. 3 is the diagram of circuit of the action of control setup main body 14 when drg discharges in the presentation graphs 1.After the preparation closed, that begin lifting of door at car 1 finished, control setup main body 14 was transfused to drg and releases order.Thus, from current-order generating unit 16 output initial current command value I *P is as the value I of current-order *(step S1).And meanwhile, timer 23 is reset, and begins the timing (step S2) of the time T when excitation begins.
Then, produce voltage instruction u by current control division 17, so that the value I of the actual current value I of brake coil 13 and current-order *Consistent (step S3).At this moment, when the differential gain is made as Kd, when proportional gain is made as Ki, voltage instruction for example can obtain according to following formula.
u=[{(Ki+Kd)/Kd}I *-I]Kd……(1)
Wherein, for protective circuit, the voltage instruction that inputs to brake coil 13 is restricted to higher limit u ' less than current limiter 18 (u<u ').
Behind voltage instruction input brake coil 13, coil actual current I is with constant increase sometime, and voltage instruction u then reduces gradually according to formula (1).
When the time T that rises surpasses predefined time T 1 (step S4), begin the output (step S5) to the differential value of release movement test section 20 from differential portion 19 when excitation begins.Herein, the time T 1 that begins by the end of the output of differential value is set to the value less than the time T p that begins from excitation to begin to the release movement of normal armature 10.
Then, increase at the coil actual current, the attractive force that results from brake coil 13 is during greater than the spring force of retarding spring 11, and the release movement of armature 10 begins.At this moment, produce induced electric motive force in the direction that hinders flux change (direction that descend for current value this moment), and the value of voltage instruction increases, so that reduce part by current control division 17 compensating currents.Therefore, when the release movement of armature 10 began, the differential value of exporting from differential portion 19 just became from negative.
The differential value a that utilizes differential portion 19 to obtain compares (step S6) by release movement test section 20 with pre-set threshold a ' (>0).And, when differential value a surpasses threshold value a ', from the beginning detection signal of release movement test section 20 output release movement.Thus, period test section 22 is reset, the timing (step S7) of the time T c that the release movement of beginning armature 10 rises when beginning.And, by current-order adjusting portion 21, the value I of the current-order of received current control part 17 *By from initial current command value I *P switches to control command value I *C (I *C<I *P) (step S8).
Value I at current-order *Be switched to control command value I *Behind the c, revise voltage instruction u (step S9) by current control division 17.Herein, control command value I *C is set to the needed MIN value of release movement of armature 10.That is, after the release movement of armature 10 begins, be reduced to necessary Min. by making current value, thus impulsive force and impact sound when reducing armature 10 and impacting electromagnet 11.To this, before armature 10 beginning release movement, flow through the electric current of the performance boundary of power supply and brake coil 13, become minimum thereby make by the end of the time that release movement begins.
And, behind reduction correction voltage instruction, monitor whether time T when excitation begins has reached Tend (step S10) and whether the time T c when release movement begins has reached Tcend (step S11) according to current instruction value.And, irrelevant when arbitrary condition is set up in T>Tend and Tc>Tcend with the state of release movement, the value I of current-order *Return initial current command value I *P (step S12).
Then, monitor whether discharge detector switch 12 is switched on (step S13).When release detector switch 12 was switched on, armature 10 was displaced to the releasing position, finishes and be judged as release movement, and the value of current-order is switched to holding current command value I *H (step S14).
In addition, Fig. 4 is the diagram of curves of variation of variation and the electric current that flows through brake coil 13 of the current-order of the control setup main body 14 in the presentation graphs 1, and Fig. 5 is the action when drg discharges of armature 10 in the presentation graphs 1 and the diagram of curves of the variation of the voltage instruction during drg release.As shown in Figure 4 and Figure 5, begin in the actual release movement of armature 10, when the differential value of voltage instruction surpasses threshold value a ', the value of current-order is switched to control current value I *C, the value that flows through the electric current of brake coil 13 also is reduced to Ic.
In this electromagnetic brake control device, can detect the beginning of the release movement of the armature 10 that the attraction by brake coil 13 produces, when detecting release movement and begin, begin to reduce before the attractive force that results from brake coil 13 than release movement, so can suppress long-timeization of drg release movement, and impact sound can stably reduce drg and discharge for all electromagnetic braking apparatuses the time.
And control setup main body 14 has: current-order generating unit 16, and it is according to the drg generation current-order that releases order; Current control division 17, it produces voltage instruction, so that the actual current value of brake coil 13 is consistent with the value of current-order; And release movement test section 20, it detects the release movement of armature 10, so can detect the beginning of the release movement of armature 10 more reliably according to the variation of the value of voltage instruction.In addition, but the detection of the release movement of armature 10 also can utilize the sensor of the action (displacement) of continuous detecting armature 10 to carry out.
In addition, when the excitation from brake coil 13 begins during through predefined time T end, the attractive force that control setup main body 14 produces before reducing brake coil 13, even so in the control that reduces attractive force, produce when unusual, also can carry out release movement more reliably, can improve reliability.
In addition, during through predefined time T cend, the attractive force that control setup main body 14 produces before reducing brake coil 13 can be carried out release movement thus more reliably, can improve reliability when the release movement from armature 10 begins.
Embodiment 2
Below, Fig. 6 is the block scheme of control setup main body of the lift appliance of expression embodiment of the present invention 2.Control setup main body 14 also has action time opening test section 24 and gap/pressing force compensation section 25 on the architecture basics of embodiment 1.Time till action time opening test section 24 detects and begins to begin to the release movement of armature 10 from the excitation of brake coil 13 is promptly moved time opening Tp, and its result is sent to gap/pressing force compensation section 25.
Gap/pressing force compensation section 25 changes control command value according to the action time opening Tp that obtains by action time opening test section 24.Specifically, gap/pressing force compensation section 25 is obtained the control current value, when making the pressing force of gap between electromagnet 11 and armature 10 and retarding spring 11 change, the current value of brake coil 13 also can become makes the needed MIN value of armature 10 actions.
Fig. 7 is the diagram of circuit of the action of control setup main body 14 when drg discharges in the presentation graphs 6.When from the beginning detection signal of the release movement of release movement test section 20 output armatures 10, the instrumentation of action time opening Tp Tp ' as a result is sent to gap/pressing force compensation section 25, begins the timing (step S15) of the time T c when the release movement of armature 10 begins simultaneously.
(Icr<Ip) is transfused to gap/pressing force compensation section 25 to predefined control command reference value I cr.When input action time opening Tp ', gap/pressing force compensation section 25 is used coefficient of correction Ka, according to the following described control command value I that obtains *C (step S16).
I *c=Tp’·Ka+Icr……(2)
Wherein, I *Cmin<I *C<I *Cmax
I *Cmin: the lower limit of control command value
I *Cmax: the higher limit of control command value
At this, Fig. 8 is the action time opening of the gap/pressing force compensation section 25 in the presentation graphs 6 and the diagram of curves of the relation between the control command value.Other structures and action are identical with embodiment 1.
In this electromagnetic brake control device, according to the time till beginning from excitation to begin to release movement, change control command value, so the current value adjustment of the brake coil 13 after release movement can being begun is MIN essential value, and irrelevant with the difference of gap and pressing force.
Embodiment 3
Below, Fig. 9 is the block scheme of control setup main body of the lift appliance of expression embodiment of the present invention 3.Control setup main body 14 also has time constant test section 26 and coil resistance compensation section 27 on the architecture basics of embodiment 2.Time constant test section 26 detects excitation from brake coil 13, reaches predefined value I to the actual current value I of brake coil 13 1Till time T r, its result is sent to coil resistance compensation section 27.In addition, setting value I 1Be set to the value of release movement less than armature 10 current value when beginning.
Coil resistance compensation section 27 is according to the instrumentation that comes corrective action time opening test section 24 from the information of time constant test section 26 Tp as a result, and sends to gap/pressing force compensation section 25.Specifically, 27 corrective action time opening of coil resistance compensation section Tp follows the temperature traverse of brake coil 13 when the release movement time opening of armature 10 Tp and the variable quantity of the time constant that produces with compensation.
Figure 10 is the diagram of circuit of the action of control setup main body 14 when drg discharges in the presentation graphs 9.Before the release movement of armature 10 begins, utilize time constant test section 26 to monitor whether the current value of brake coil 13 has surpassed setting value I 1(step S17), instrumentation reach setting value I 1Till time T r (step S18).The instrumentation of time T r Tr ' as a result is sent to coil resistance compensation section 27.
When from the beginning detection signal of the release movement of release movement test section 20 output armatures 10, the instrumentation of action time opening Tp Tp ' as a result is sent to coil resistance compensation section 27, and begins the timing (step S15) of the time T c when the release movement of armature 10 begins.
When input time Tr ' and action during time opening Tp ', coil resistance compensation section 27 is used coefficient of correction Kr and predefined a reference value Trr, according to the following described compensation value Tp that obtains action time opening Tp " (step S19).
Tp”=Tp’-Kr·Tr’/Trr……(3)
As input action time opening Tp " time, gap/pressing force compensation section 25 is used coefficient of correction Ka, according to the following described control command value I that obtains *C (step S20).
I *c=Tp”·Ka+Icr……(4)
Wherein, I *Cmin<I *C<I *Cmax
Other structures are identical with embodiment 1 with action.
In this electromagnetic brake control device, the variation of the action time opening Tp that compensation produces because of the resistance variations of brake coil 13, so the current value adjustment of the brake coil 13 after release movement can being begun is MIN essential value, and irrelevant with the temperature traverse of brake coil 13.
Embodiment 4
Below, Figure 11 is the block scheme of control setup main body of the lift appliance of expression embodiment of the present invention 4.In embodiment 1~3, produce the attractive force that current-order comes control brake device coil 13, but in embodiment 4, produce the attractive force that voltage instruction comes control brake device coil 13.
In the drawings, voltage instruction generating unit 31 releases order according to drg, produces the voltage instruction that is used for brake coil 13 is applied voltage.Voltage instruction is via voltage instruction adjusting portion 34 and current limiter 18 input brake coils 13.After carrying out differential, differential portion 32 imports release movement test section 33 by current probe 15 detected coil actual current value.Release movement test section 33 compares the output and the pre-set threshold of differential portion 32, detects the beginning of the release movement of armature 10.That is, release movement test section 33 changes the release movement that detects armature 10 according to the time of coil actual current value.
When detecting the release movement of armature 10, this information is from release movement test section 33 input voltages instruction adjusting portion 34 and period test section 22.Voltage instruction adjusting portion 34 changes the value of voltage instruction and sends to current limiter 18 according to the information from release movement test section 33.Specifically, when detecting the beginning of release movement, voltage instruction adjusting portion 34 reduces the attractive force that results from brake coil 13 before beginning than release movement.
Time (period) when 22 pairs of release movement from armature 10 of period test section begin is carried out timing.And the time that 3 pairs of brake coils 13 of timer 2 rise when releasing order the beginning excitation according to drg is carried out timing.
During through predefined time T end, control setup main body 14 stops the voltage instruction of voltage instruction adjusting portion 34 regulates the attractive force that brake coil 13 is produced before reducing when the excitation from brake coil 13 begins.And during through predefined time T cend, control setup main body 14 stops the voltage instruction of voltage instruction adjusting portion 34 regulates the attractive force that brake coil 13 is produced before reducing when the release movement from armature 10 begins.
In addition, the overall structure of lift appliance is identical with embodiment 1 (Fig. 1).
Below, action is described.Figure 12 is the diagram of circuit of the action of control setup main body 14 when drg discharges among expression Figure 11.After the preparation closed, that begin lifting of door at car 1 finished, drg released order and is transfused to control setup main body 14.Thus, from voltage instruction generating unit 31 output initial voltage command value u *P is as voltage instruction value u *(step S31).And meanwhile, timer 23 is reset, and begins the timing (step S32) of the time T when excitation begins.
For protective circuit, the voltage instruction of input brake coil 13 is restricted to less than the higher limit u ' of current limiter 18 (u<u ') (step S33).When the time T when excitation begins surpasses predefined time T 1 (step S34), begin the output (step S35) to the differential value of release movement test section 33 from differential portion 32.Herein, the time T 1 till beginning to the output of differential value is set to the value less than the time T p that begins from excitation to begin to the release movement of normal armature 10.
Then, when the coil actual current increases, the attractive force that results from brake coil 13 is during greater than the spring force of retarding spring 11, and the release movement of armature 10 begins.At this moment, produce induced electric motive force in the direction that hinders flux change (direction that descend for current value this moment).Therefore, when the release movement of armature 10 begins, negative from just becoming from the differential value of differential portion 32 outputs.
The differential value a that obtains in differential portion 32 compares (step S36) by release movement test section 33 with pre-set threshold a ' (<0).And, at differential value a during less than threshold value a ', from the beginning detection signal of release movement test section 33 output release movement.Thus, period test section 22 is reset, and begins the timing (step S37) of the time T c when the release movement of armature 10 begins.And, by voltage instruction adjusting portion 34, with the voltage instruction value u of input current limiter 18 *From initial voltage command value u *P switches to control command value u *C (u *C<u *P) (step S38).
That is, after the release movement of armature 10 begins, be reduced to minimum necessary limit by making voltage, thus impulsive force and impact sound when reducing armature 10 and impacting electromagnet 11.To this, before armature 10 beginning release movement, the voltage of the performance boundary by applying power supply and brake coil 13, the time till release movement is begun becomes minimum.
And, voltage instruction value is being switched to control command value u *Behind the c, monitor whether time T when excitation begins has reached Tend (step S39) and whether the time T c when release movement begins has reached Tcend (step S40).And, when arbitrary condition is set up in T>Tend and Tc>Tcend, the value u of voltage instruction *Return initial voltage command value u *P, and with the state of release movement irrelevant (step S41).
Then, monitor whether discharge detector switch 12 is switched on (step S42).When release detector switch 12 was switched on, armature 10 was displaced to the releasing position, is judged as release movement and finishes, and the value of voltage instruction is switched to sustaining voltage command value u *H (step S42).
In this electromagnetic brake control device, can detect the beginning of the release movement of the armature 10 that the attraction by brake coil 13 produces, when detecting release movement and begin, before beginning than release movement, reduce the attractive force that results from brake coil 13, so can suppress long-timeization of drg release movement, and impact sound can stably reduce drg and discharge for all electromagnetic braking apparatuses the time.
And control setup main body 14 has: releasing order according to drg produces the voltage instruction generating unit 31 of voltage instruction; With variation, detect the release movement test section 33 of the release movement of armature 10, so, also can detect the beginning of the release movement of armature 10 more reliably by voltage control according to the actual current value of brake coil 13.
Embodiment 5
Below, Figure 13 is the block scheme of control setup main body of the lift appliance of expression embodiment of the present invention 5.In the drawings, instruction generating unit 41 releases order according to drg, produces to be used to make brake coil 13 to produce the excitation instruction (current-order or voltage instruction) of electromagnetic attractions.The excitation instruction is by instruction adjusting portion 42 input brake coils 13.
The time that timer 23 rises when releasing order to brake coil 13 beginning excitations according to drg is carried out timing.When the excitation from brake coil 13 begins when the schedule time T1, instruction adjusting portion 42 with the excitation command value of input brake coil 13 switch to from instructing the different value of excitation command value of generating unit 41.
Specifically, when reaching time T 1, instruction adjusting portion 42 switched energization command value result from the attractive force of brake coil 13 with reduction.Time T 1 plays the time weak point till armature 10 impacts electromagnet 11 when being set than brake coil 13 beginning excitations.
When the excitation from brake coil 13 begins during through predefined time T end, the adjusting of the excitation instruction of control setup main body 14 halt instruction adjusting portions 42, the attractive force that brake coil 13 is produced before reducing.
In addition, the overall structure of lift appliance is identical with embodiment 1 (Fig. 1).
Below, action is described.Figure 14 is the diagram of circuit of the action of control setup main body 14 when drg discharges among expression Figure 13.After the preparation closed, that begin lifting of door at car 1 finished, drg released order and is transfused to control setup main body 14.Thus, timer 23 is reset, and begins the timing (step S51) of the time T when excitation begins.And, from instruction generating unit 41 output initial current command value I *P or initial voltage command value u *P is as the value (step S52) of initial excitation instruction.
After producing initial excitation instruction, monitor whether the time when excitation begins has reached T1 (step S53).If do not arrive T1, then the excitation command value is still initial excitation command value.When the time when excitation begins reaches T1,, the value of the excitation instruction of input brake coil 13 is switched to control command value (step S54) from initial excitation command value by instruction adjusting portion 42.Control command value is control current command value I *C (I *C<I *P) or control voltage instruction value u *C (u *C<u *P).
That is, when the excitation from armature 10 begins through behind the schedule time T1, by reducing attractive force, impulsive force and impact sound when reducing armature 10 and impacting electromagnet 11.To this, after beginning, the excitation of armature 10 produces the attractive force of the performance boundary of power supply and brake coil 13 immediately, thus the time till when shortening to release movement and beginning.
And, after the excitation command value is switched to control command value, monitor whether the time T when excitation begins has arrived Tend (step S55).And when the time T when excitation begins arrived Tend, the value of excitation instruction was returned initial excitation command value I *P or u *P, and with the state of release movement irrelevant (step S56).
Then, after release detector switch 12 was switched on, armature 10 was displaced to the releasing position, was judged as release movement and finished, and the value of excitation instruction is switched to and keeps the excitation command value.
In this electromagnetic brake control device, when beginning, the excitation from brake coil 13 during elapsed time Tend, improves the attractive force of brake coil 13, so can carry out release movement more reliably, can improve reliability.
And, after the excitation of brake coil 13 begins, make brake coil 13 produce initial attractive force immediately, then when elapsed time T1, reduce the attractive force of brake coil 13, when the excitation from brake coil begins during elapsed time Tend, make the attractive force of brake coil 13 return initial attractive force, so can suppress long-timeization of drg release movement, and the impact sound can stably reduce drg and discharge the time, and can improve reliability.
In addition, in embodiment 5, when elapsed time T1 when excitation begins, reduce the attractive force of brake coil 13, but the condition of switching attractive force is not limited to the time when excitation begins, and for example also can be the action of armature 10, the position of armature 10, the magnitude of voltage of brake coil 13 or the current value of brake coil 13 etc.
And, in embodiment 5, when elapsed time Tend when excitation begins, make the attractive force of brake coil 13 return initial attractive force, but may not necessarily return initial attractive force, for example also can become attractive force, or be slightly less than the attractive force of initial attractive force greater than initial attractive force.
In addition, in embodiment 5, when elapsed time T1 when excitation begins, reduce the attractive force of brake coil 13, but brake coil 13 is produced attract armature 10 needed MIN attractive forces, in time of advent during Tend, switch to attractive force to greatest extent.
In addition, in embodiment 1~5, the electromagnetic brake control device of lift appliance has been described, but the present invention also can be applied to be located at the electromagnetic brake control device on other equipment.
And, figure 1 illustrates the electromagnetic braking apparatus of brake shoe 9, but also can be by the type on the inner peripheral surface that is pressed in brake wheel with brake shoe by the type on the outer circumference surface that is pressed in brake wheel 7.
In addition, the drg swivel also can be a brake disc.That is, the present invention also can be applied to plate disc brake.
In addition, the drg swivel also can form as one with drive pulley.

Claims (11)

1. electromagnetic brake control device, it has the control setup main body, and this control setup main body excitation brake coil makes above-mentioned brake coil attract armature, thereby the electromagnetic braking apparatus is discharged, wherein,
Above-mentioned control setup main body can detect the beginning of the release movement of the above-mentioned armature that the attraction because of above-mentioned brake coil produces, when the beginning that detects release movement, before beginning than release movement, reduce the attractive force that results from above-mentioned brake coil.
2. electromagnetic brake control device according to claim 1, wherein,
Above-mentioned control setup main body has:
The current-order generating unit, it releases order according to drg, produces to be used to make electric current to flow through the current-order of above-mentioned brake coil;
Current control division, it produces the voltage instruction as the instruction relevant with the magnitude of voltage that imposes on above-mentioned brake coil, so that the actual current value of above-mentioned brake coil is consistent with the value of above-mentioned current-order;
The release movement test section, it detects the release movement of above-mentioned armature according to the variation of the value of above-mentioned voltage instruction; And
The current-order adjusting portion, it changes the value of current-order according to the information from above-mentioned release movement test section.
3. electromagnetic brake control device according to claim 2, wherein,
Above-mentioned control setup main body also has differential portion, and this differential portion carries out differential to the value of above-mentioned voltage instruction and sends to above-mentioned release movement test section,
Above-mentioned release movement test section compares the output and the pre-set threshold of above-mentioned differential portion, thereby detects the beginning of release movement.
4. electromagnetic brake control device according to claim 1, wherein,
Above-mentioned control setup main body has:
The voltage instruction generating unit, it releases order according to drg, produces the voltage instruction that is used for applying to above-mentioned brake coil voltage;
The release movement test section, it detects the release movement of above-mentioned armature according to the variation of the actual current value of above-mentioned brake coil; And
The voltage instruction adjusting portion, it changes the value of voltage instruction according to the information from above-mentioned release movement test section.
5. electromagnetic brake control device according to claim 4, wherein,
Above-mentioned control setup main body also has differential portion, and this differential portion carries out differential to the actual current value of above-mentioned brake coil and sends to above-mentioned release movement test section,
Above-mentioned release movement test section compares the output and the pre-set threshold of above-mentioned differential portion, thereby detects the beginning of release movement.
6. electromagnetic brake control device according to claim 1, wherein,
When the excitation from above-mentioned brake coil begins during through predefined time, above-mentioned control setup main body makes above-mentioned brake coil produce attractive force before reducing.
7. electromagnetic brake control device according to claim 1, wherein,
When the release movement from above-mentioned armature begins during through predefined time, above-mentioned control setup main body makes above-mentioned brake coil produce attractive force before reducing.
8. electromagnetic brake control device according to claim 1, wherein,
Above-mentioned control setup main body was regulated above-mentioned brake coil and is begun the attractive force that the back produces in release movement according to the action time opening of the time till beginning as the release movement that plays above-mentioned armature when the excitation of above-mentioned brake coil begins.
9. electromagnetic brake control device according to claim 8, wherein,
Above-mentioned control setup main body is before the release movement of above-mentioned armature begins, and the time the when current value of the above-mentioned brake coil of instrumentation reaches predefined value is according to instrumentation corrective action time opening as a result.
10. electromagnetic brake control device, it has the control setup main body, and this control setup main body excitation brake coil makes above-mentioned brake coil attract armature, thereby the electromagnetic braking apparatus is discharged, wherein,
The time of above-mentioned control setup main body instrumentation when the excitation of above-mentioned brake coil begins, when beginning, the excitation from above-mentioned brake coil during through predefined time, improves the attractive force of above-mentioned brake coil.
11. electromagnetic brake control device according to claim 10, wherein,
Above-mentioned control setup main body makes above-mentioned brake coil produce predetermined initial attractive force after the excitation of above-mentioned brake coil begins immediately, reduce the attractive force of above-mentioned brake coil then according to predetermined conditions, when beginning, the excitation from above-mentioned brake coil during through predefined time, make the attractive force of above-mentioned brake coil get back to initial attractive force.
CNA2006800017985A 2006-03-14 2006-03-14 Electromagnetic brake control device Pending CN101132980A (en)

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CN201410181259.0A CN103922238B (en) 2006-03-14 2006-03-14 Electromagnetic brake control device

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Cited By (9)

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CN102190222A (en) * 2010-03-19 2011-09-21 东芝电梯株式会社 Brake control device for elevator
CN102325712A (en) * 2009-02-20 2012-01-18 三菱电机株式会社 Brake device for elevator
CN102762481A (en) * 2010-02-19 2012-10-31 三菱电机株式会社 Elevator device
CN102963786A (en) * 2011-08-31 2013-03-13 东芝电梯株式会社 Brake-maintenance torque-adjustment apparatus and adjustment method thereof for tractor
CN105060037A (en) * 2015-08-10 2015-11-18 上海新时达电气股份有限公司 Brake control method and system
CN105083252A (en) * 2014-05-21 2015-11-25 哈米尔顿森德斯特兰德公司 Brake controller
CN108203033A (en) * 2016-12-19 2018-06-26 日立电梯(中国)有限公司 A kind of intelligent elevator braking control system
CN108290706A (en) * 2015-12-02 2018-07-17 因温特奥股份公司 Method for the brake apparatus for controlling lift facility
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CN102325712A (en) * 2009-02-20 2012-01-18 三菱电机株式会社 Brake device for elevator
CN102325712B (en) * 2009-02-20 2014-11-05 三菱电机株式会社 Brake device for elevator
CN102762481A (en) * 2010-02-19 2012-10-31 三菱电机株式会社 Elevator device
CN102762481B (en) * 2010-02-19 2014-11-05 三菱电机株式会社 Elevator device
CN102190222A (en) * 2010-03-19 2011-09-21 东芝电梯株式会社 Brake control device for elevator
CN102963786B (en) * 2011-08-31 2014-12-17 东芝电梯株式会社 Brake-maintenance torque-adjustment apparatus and adjustment method thereof for tractor
CN102963786A (en) * 2011-08-31 2013-03-13 东芝电梯株式会社 Brake-maintenance torque-adjustment apparatus and adjustment method thereof for tractor
CN105083252B (en) * 2014-05-21 2019-05-10 哈米尔顿森德斯特兰德公司 Brake controller
CN105083252A (en) * 2014-05-21 2015-11-25 哈米尔顿森德斯特兰德公司 Brake controller
CN105060037A (en) * 2015-08-10 2015-11-18 上海新时达电气股份有限公司 Brake control method and system
CN108290706A (en) * 2015-12-02 2018-07-17 因温特奥股份公司 Method for the brake apparatus for controlling lift facility
CN108290706B (en) * 2015-12-02 2020-06-09 因温特奥股份公司 Method for controlling a braking device of an elevator installation
US10723586B2 (en) 2015-12-02 2020-07-28 Inventio Ag Method for driving a brake device of an elevator system
CN108203033A (en) * 2016-12-19 2018-06-26 日立电梯(中国)有限公司 A kind of intelligent elevator braking control system
CN109782656A (en) * 2018-12-26 2019-05-21 航天信息股份有限公司 A kind of electromagnetic brake control device and method

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