CN104192536B - Speed control method of material conveying equipment in sampling and sample preparing system - Google Patents
Speed control method of material conveying equipment in sampling and sample preparing system Download PDFInfo
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- CN104192536B CN104192536B CN201410354794.1A CN201410354794A CN104192536B CN 104192536 B CN104192536 B CN 104192536B CN 201410354794 A CN201410354794 A CN 201410354794A CN 104192536 B CN104192536 B CN 104192536B
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- disintegrating machine
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- preparing system
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Abstract
The invention discloses a speed control method of material conveying equipment in a sampling and sample preparing system. The method comprises the steps that (1) the working state of crushing equipment in the sampling and sample preparing system is detected in real time, and a compensation speed delta V is obtained by the combination with a crushing machine state function KF; (2) the real time feeding speed V is obtained by the superposition of the compensation speed delta V and a conventional speed V0 of a belt conveyor; (3) speed control of the material conveying equipment in the sampling and sample preparing system is performed by utilizing the real-time feeding speed V obtained in the step (2). The method has the advantages of being simple in principle, convenient to control, good in reliability and the like.
Description
Technical field
Present invention relates generally to gathering and processing sample technical field, refer in particular to one kind conveying equipment conveying be applied to sampling and preparing system
The control method of speed.
Background technology
In the fields such as metallurgy, electric power, the coal charge being used is generally required to carry out gathering and processing sample operation, so as to coal charge
Characteristic be analyzed.At present, usually adopt belt sampling prototype, the mobile stream of conveying on belt is sampled.Logical
Normal arrangement is installation sampler in the conveyer frame in belt conveyor gallery, and the material taken is transported to stack by flow tube
Under bridge, the interior sample-preparing system of sample preparation carries out crushing division.Complete equipment is mainly by sampler（Middle part, head）, feeding belt
Machine, crushing system, division system, sample divider, rejected material processing system, computer control system etc. form.
But, there is problems with use in said mechanism：Due to the characteristic of of coal charge itself, belt can be caused
The stream of upper conveying is in uneven state, also brings tremendous influence for crushing division operation afterwards, easily occurs broken
Broken division is in non-security working condition at short notice, causes the damage of crushing division equipment.Or, to belt conveyor
It is configured to affect.
Content of the invention
The technical problem to be solved in the present invention is that：The technical problem existing for prior art, the present invention provides one
Kind principle is simple, easy to control, the good reliability control method gathering and processing sample delivery rate.
For solving above-mentioned technical problem, the present invention employs the following technical solutions：
In a kind of sampling and preparing system, the method for control speed of conveying equipment is it is characterised in that step is：
（1）The working condition of disintegrating apparatus in real-time detection sampling and preparing system, draws benefit in conjunction with disintegrating machine function of state KF
Repay speed △ V；
（2）Real-time rate of feeding V is drawn with belt feeder conventional speeds V0 after compensation speed △ V is superimposed；
（3）Using step（2）The real-time rate of feeding V obtaining carries out speeds control to conveying equipment in sampling and preparing system.
As a further improvement on the present invention：Described disintegrating machine function of state KF is made up of two functions：Disintegrating machine state
Function KF=disintegrating machine curent change kf1+ disintegrating machine rotation speed change kf2.
As a further improvement on the present invention：Described compensation speed △ V=disintegrating machine curent change kf1/V0+ disintegrating machine turns
Speed change kf2/V0=disintegrating machine curent change kf1 (I0-Ii)/V0+ disintegrating machine rotation speed change kf2 (γ i- γ 0)/V0；
Wherein, I0 is disintegrating machine nominal load current, and γ 0 is disintegrating machine nominal load rotating speed, and Ii is disintegrating machine dynamic current, and γ i is
Disintegrating machine Dynamic Speed.
As a further improvement on the present invention：The two or more speed stage that described conveying equipment is contoured to correspond to, often
Individual speed stage corresponds to a velocity interval.
Compared with prior art, it is an advantage of the current invention that：The present invention is by carrying out monitor in real time to disintegrating apparatus, by
The rotating speed of disintegrating apparatus and current status judge to obtain velocity compensated value, then show that belt feeder is corresponding using velocity compensated value
Rate of feeding, is finally controlled to the speed of conveying equipment, so that actual feeding capacity is always adaptable at disintegrating machine in real time
Reason amount, allows disintegrating machine to be in all the time under safe working condition, reaches the purpose avoiding disintegrating machine stall or burning.
Brief description
Fig. 1 is the principle schematic of the present invention.
Fig. 2 is rate of feeding and electric current, rotation speed relation schematic diagram.
Specific embodiment
Below with reference to Figure of description and specific embodiment, the present invention is described in further details.
As shown in figure 1, in a kind of sampling and preparing system of the present invention conveying equipment method for control speed, its step is：
（1）The working condition of disintegrating apparatus in real-time detection sampling and preparing system, draws benefit in conjunction with disintegrating machine function of state KF
Repay speed △ V；
（2）Real-time rate of feeding V is drawn with belt feeder conventional speeds V0 after compensation speed △ V is superimposed；
（3）Using step（2）The real-time rate of feeding V obtaining carries out speeds control to conveying equipment in sampling and preparing system.
The present invention is to draw compensation speed by disintegrating machine function of state, and be added to belt feeder normal speed, draws brokenly
The real-time rate of feeding of broken machine, thus reach the purpose controlling rate of feeding to avoid disintegrating machine stall.
In the present embodiment, disintegrating machine function of state KF is made up of two functions：Disintegrating machine function of state KF=disintegrating machine
Curent change kf1+ disintegrating machine rotation speed change kf2.Disintegrating machine curent change kf1 carries out real-time monitoring by current sensor, crushes
Machine rotation speed change kf2 is monitored by speed probe.
In the present embodiment, compensation speed △ V=disintegrating machine curent change kf1/V0+ disintegrating machine rotation speed change kf2/V0
=disintegrating machine curent change kf1 (I0-Ii)/V0+ disintegrating machine rotation speed change kf2 (γ i- γ 0)/V0；Wherein, I0 is broken
Machine nominal load current, γ 0 is disintegrating machine nominal load rotating speed, and Ii is disintegrating machine dynamic current, and γ i dynamically turns for disintegrating machine
Speed.
Concrete application example：At a time, disintegrating machine dynamic current Ii=20A, disintegrating machine Dynamic Speed γ i=are monitored
800rpm is it was known that disintegrating machine nominal load current I0=15A, disintegrating machine nominal load rotating speed γ 0=900 rpm, V0=0.1m/s；
△ V=kf1 (curent change)/V0+kf2 (rotation speed change)/V0
=kf1(I0-Ii) /V0+kf2(γi-γ0) /V0
= kf1(15-20) /0.01+ kf2(800-900) /0.01
= kf1(-5) /0.01+ kf2(-100) /0.01
=（-0.04）+（-0.33）=-0.073(m/s)
Then now belt feeder rate of feeding V=V0+ △ V=0.1-0.073=0.027 (m/s)
Velocity amplitude input control module, carries out real-time adjustment to belt motor speed it is ensured that disintegrating machine is in normal work shape
State.
In above process, rate of feeding is as shown in Figure 2 with electric current, rotation speed relation：Electric current increases, and rotating speed reduces, feeding
Speed should slow down；Jogging speed is 0, that is, stop feeding.Electric current reduces, and rotating speed increases, and rate of feeding can tune up, and maximal rate is
V0, i.e. speed back to normal, now disintegrating machine is Light Condition.
In concrete application example, further according to the method for the present invention, conveying equipment can also be contoured to correspond to
Two or more speed stage, in rational velocity interval, is adjusted to required actual-gear.
The above is only the preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-described embodiment,
All technical schemes belonging under thinking of the present invention belong to protection scope of the present invention.It should be pointed out that for the art
For those of ordinary skill, some improvements and modifications without departing from the principles of the present invention, should be regarded as the protection of the present invention
Scope.
Claims (2)
1. in a kind of sampling and preparing system the method for control speed of conveying equipment it is characterised in that step is：
（1）The working condition of disintegrating apparatus in real-time detection sampling and preparing system, draws compensation speed in conjunction with disintegrating machine function of state KF
Degree △ V；
（2）Real-time rate of feeding V is drawn with belt feeder conventional speeds V0 after compensation speed △ V is superimposed；
（3）Using step（2）The real-time rate of feeding V obtaining carries out speeds control to conveying equipment in sampling and preparing system；
Described disintegrating machine function of state KF is made up of two functions：Disintegrating machine function of state KF=disintegrating machine curent change kf1+
Disintegrating machine rotation speed change kf2；
Described compensation speed △ V=kf1 (curent change)/V0+kf2 (rotation speed change)/V0=kf1 (I0-Ii)/V0+kf2 (γ
i-γ0) /V0；Wherein, I0 is disintegrating machine nominal load current, and γ 0 is disintegrating machine nominal load rotating speed, and Ii is that disintegrating machine is dynamic
Electric current, γ i is disintegrating machine Dynamic Speed.
2. in sampling and preparing system according to claim 1 the method for control speed of conveying equipment it is characterised in that will be described
The two or more speed stage that conveying equipment is contoured to correspond to, each speed stage corresponds to a velocity interval.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410354794.1A CN104192536B (en) | 2014-07-24 | 2014-07-24 | Speed control method of material conveying equipment in sampling and sample preparing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410354794.1A CN104192536B (en) | 2014-07-24 | 2014-07-24 | Speed control method of material conveying equipment in sampling and sample preparing system |
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| Publication Number | Publication Date |
|---|---|
| CN104192536A CN104192536A (en) | 2014-12-10 |
| CN104192536B true CN104192536B (en) | 2017-02-15 |
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| CN201410354794.1A Active CN104192536B (en) | 2014-07-24 | 2014-07-24 | Speed control method of material conveying equipment in sampling and sample preparing system |
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Families Citing this family (1)
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| CN113237507A (en) * | 2021-04-20 | 2021-08-10 | 煤炭科学技术研究院有限公司 | Mobile coal flow sampling and sample preparation full-process material sensing system |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60112521A (en) * | 1983-11-21 | 1985-06-19 | Tsubakimoto Chain Co | Speed control type shifting device |
| JP4800861B2 (en) * | 2006-06-21 | 2011-10-26 | 三菱電機株式会社 | AC rotating machine control device |
| CN101751044B (en) * | 2008-12-16 | 2011-11-09 | 鸿富锦精密工业（深圳）有限公司 | Speed controller |
| DE112011101775B4 (en) * | 2010-05-26 | 2016-12-29 | Mitsubishi Electric Corp. | Motor controller |
| CN102942039B (en) * | 2012-11-27 | 2014-10-22 | 山西三元煤业股份有限公司 | Belt conveyor control system and method capable of adjusting belt speeds automatically according to material flows or material levels |
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