CN103350024B - Ore feeding speed control method for semi-autogenous grinding machine - Google Patents
Ore feeding speed control method for semi-autogenous grinding machine Download PDFInfo
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- CN103350024B CN103350024B CN201310257651.4A CN201310257651A CN103350024B CN 103350024 B CN103350024 B CN 103350024B CN 201310257651 A CN201310257651 A CN 201310257651A CN 103350024 B CN103350024 B CN 103350024B
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Abstract
The invention discloses a kind of semi-autogenous mill mine-supplying quantity control methods, comprising the following steps: provides semi-autogenous mill mine-supplying quantity setting value SP, handles to obtain mine-supplying quantity measured value PV through glide filter, mine-supplying quantity measured value PV subtracts each other with setting value SP, obtains mine-supplying quantity deviation
; According to greatest measurement PVmax, deviation maximum value is obtained
; Section
Ten subintervals M1, N1, M2, N2, M3, N3, M4, N4, M5, N5, deviation are in turn divided into since left end 0
Greater than 0, needs the running frequency of blanking frequency converter to reduce several Hz, that is, reduce the revolving speed of blanking frequency converter, so that mine-supplying quantity be made to reduce; Deviation
Less than 0, needs the running frequency of blanking frequency converter to increase several Hz, that is, increase the revolving speed of blanking frequency converter, so that mine-supplying quantity be made to increase. The present invention solve the problems, such as conventional method semi-autogenous mill mine-supplying quantity control when caused by between mine-supplying quantity and manufacturing technique requirent value deviation fluctuation it is larger, cannot stablize in the range of permissions, ensure that semi-autogenous mill safety in production.
Description
Technical field
The present invention relates to a kind of control method, especially relate to a kind of semi-autogenous mill mine-supplying quantity control method for metallurgical mine ore dressing link.
Background technology
Metallurgical mine ore dressing link semi-autogenous mill is when producing, and whether the deviation of its mine-supplying quantity and setting value is stabilized in a scope allowed, and has a significant impact the safety in production of semi-autogenous mill.
The control of current semi-autogenous mill mine-supplying quantity is generally taked manually and automatic two kinds of control modes.The mine-supplying quantity situation of change that manual mode shows in real time with manual observation computer operator station is entirely to operate the rotating speed of feed frequency converter, thus change blanking velocity, to scheme to make mine-supplying quantity meet the value of production requirement, due to artificial arbitrarily and delayed, often cause actual mine-supplying quantity to depart from the value of production requirement very large.Automated manner, according to the mine-supplying quantity value that scene records, adopts PID to control the rotating speed of blanking frequency converter.Owing to having certain distance between on-the-spot mine-supplying quantity test point and blanking point, cause measurement delay, such PID control effects is also bad, the deviation of mine-supplying quantity and setting value is fluctuated comparatively large, can not be stabilized in the scope of production technology permission.
It is comparatively large that result that is manual and control mine-supplying quantity automatically all causes the deviation between the mine-supplying quantity of semi-autogenous mill and manufacturing technique requirent value to fluctuate, and can not be stabilized in a scope allowed, thus make a big impact to the safety in production of semi-autogenous mill.
Summary of the invention
Technical problem to be solved by this invention is: provide a kind of semi-autogenous mill mine-supplying quantity control method, solve when having certain distance, measurement delay at the scene between mine-supplying quantity test point and blanking point, deviation between the mine-supplying quantity that conventional method causes when the mine-supplying quantity of semi-autogenous mill controls and manufacturing technique requirent value fluctuates comparatively greatly, the problem that can not be stabilized in a scope allowed, thus ensure that semi-autogenous mill is kept the safety in production.
For solving the problems of the technologies described above, technical scheme of the present invention is: a kind of semi-autogenous mill mine-supplying quantity control method, comprise the following steps: provide semi-autogenous mill mine-supplying quantity setting value SP, mine-supplying quantity measured value PV is obtained through glide filter process, mine-supplying quantity measured value PV and setting value SP subtracts each other, and obtains mine-supplying quantity deviation
according to greatest measurement PV
max, obtain deviation maximum
interval
m1, N1, M2, N2, M3, N3, M4, N4, M5, N5 ten subintervals are divided into successively, wherein between N1, N2, N3, N4, N5 five subinterval name regulatory regions from left end 0; Between name Accreditation Waiting Area, M1, M2, M3, M4, M5 five subintervals; It is 0 that every two adjacent intervals are occured simultaneously; All interval unions are
if the length between M1, M2, M3, M4, M5 five Accreditation Waiting Areas is equal, the length between single regulatory region is greater than the length between Accreditation Waiting Area; Interval approach axis, i.e. mine-supplying quantity deviation
entered the direction in another interval by an interval, be called forward from left to right and enter, deviation
enter interval N2 by interval M2 to be called
forward enters N2, otherwise, be called and oppositely enter; Because measured value is continuous print, deviation
adjacent interval can only be entered by an interval, and can not adjacent interval be striden across and directly enter other interval; Deviation
be greater than 0, when namely mine-supplying quantity measured value is greater than setting value, need the running frequency of blanking frequency converter to reduce some Hz, namely reduce the rotating speed of blanking frequency converter, thus mine-supplying quantity is reduced; Deviation
be less than 0, when namely mine-supplying quantity measured value is less than setting value, need the running frequency of blanking frequency converter to increase some Hz, namely increase the rotating speed of blanking frequency converter, thus mine-supplying quantity is increased.
Further, operating procedure comprises:
(1) semi-autogenous mill mine-supplying quantity operation interface START button, is clicked;
(2), in mine-supplying quantity setting value frame, input mine-supplying quantity setting value SP (t/h);
(3), by acquisition system sampling actual measurement mine-supplying quantity signal (t/h);
(4), computer system according to actual measurement mine-supplying quantity signal, automatically carry out glide filter, calculate mine-supplying quantity measured value PV (t/h);
(5) the mine-supplying quantity measured value PV, after glide filter and setting value SP subtracts each other, and obtains mine-supplying quantity deviation
judge mine-supplying quantity deviation
whether be greater than 0, if mine-supplying quantity deviation
be greater than 0, then perform following (i); Otherwise, judge mine-supplying quantity deviation
whether be less than 0, if mine-supplying quantity deviation
be less than 0, then perform following (ii); Otherwise blanking frequency converter rotating speed keeps original size, does not change;
I () judges mine-supplying quantity deviation
whether enter M1 between Accreditation Waiting Area, if enter M1 between Accreditation Waiting Area, then wait for, namely blanking frequency converter rotating speed keeps original size, does not change; Otherwise, judge mine-supplying quantity deviation
whether forward enters N1 between regulatory region, if mine-supplying quantity deviation
forward enters N1 between regulatory region, then the running frequency of blanking frequency converter reduces a
1hz; Otherwise, judge mine-supplying quantity deviation
whether enter M2 between Accreditation Waiting Area, if enter M2 between Accreditation Waiting Area, then wait for, namely blanking frequency converter rotating speed keeps original size, does not change; Otherwise, judge mine-supplying quantity deviation
whether forward enters N2 between regulatory region, if mine-supplying quantity deviation
forward enters N2 between regulatory region, then the running frequency of blanking frequency converter reduces a
2hz; Otherwise, judge mine-supplying quantity deviation
whether enter M3 between Accreditation Waiting Area, if enter M3 between Accreditation Waiting Area, then wait for, namely blanking frequency converter rotating speed keeps original size, does not change; Otherwise, judge mine-supplying quantity deviation
whether forward enters N3 between regulatory region, if mine-supplying quantity deviation
forward enters N3 between regulatory region, then the running frequency of blanking frequency converter reduces a
3hz; Otherwise, judge
do you enter M4 between Accreditation Waiting Area? if enter M4 between Accreditation Waiting Area, then wait for, namely blanking frequency converter rotating speed keeps original size, does not change; Otherwise, judge mine-supplying quantity deviation
whether oppositely enter N3 between regulatory region, if mine-supplying quantity deviation
oppositely enter N3 between regulatory region, then the running frequency of blanking frequency converter increases a
31hz (this be in order to avoid
after entering N4 by M4, blanking frequency converter rotating speed becomes suddenly less, causes mine-supplying quantity to diminish rapidly, causes mine-supplying quantity to fluctuate the generation of large situation, so-called controls in advance in the other direction); Otherwise, judge mine-supplying quantity deviation
whether forward enters N4 between regulatory region, if mine-supplying quantity deviation
forward enters N4 between regulatory region, then the running frequency of blanking frequency converter reduces a
4hz; Otherwise, judge mine-supplying quantity deviation
whether enter M5 between Accreditation Waiting Area, if enter M5 between Accreditation Waiting Area, then wait for, namely blanking frequency converter rotating speed keeps original size, does not change; Otherwise, judge mine-supplying quantity deviation
whether oppositely enter N4 between regulatory region, if mine-supplying quantity deviation
oppositely enter N4 between regulatory region, then the running frequency of blanking frequency converter increases a
41hz (so-called controls in advance in the other direction); Otherwise, judge mine-supplying quantity deviation
whether forward enters N5 between regulatory region, if mine-supplying quantity deviation
forward enters N5 between regulatory region, then the running frequency of blanking frequency converter reduces a
5hz.
(ii) mine-supplying quantity deviation
take absolute value, judge mine-supplying quantity deviation
whether enter M1 between Accreditation Waiting Area, if enter M1 between Accreditation Waiting Area, then wait for, namely blanking frequency converter rotating speed keeps original size, does not change; Otherwise, judge mine-supplying quantity deviation
whether forward enters N1 between regulatory region, if mine-supplying quantity deviation
forward enters N1 between regulatory region, then the running frequency of cloth blanking frequency converter increases a
1hz; Otherwise, judge mine-supplying quantity deviation
whether enter M2 between Accreditation Waiting Area, if enter M2 between Accreditation Waiting Area, then wait for, namely blanking frequency converter rotating speed keeps original size, does not change; Otherwise, judge mine-supplying quantity deviation
whether forward enters N2 between regulatory region, if mine-supplying quantity deviation
forward enters N2 between regulatory region, then the running frequency of blanking frequency converter increases a
2hz; Otherwise, judge mine-supplying quantity deviation
whether enter M3 between Accreditation Waiting Area, if enter M3 between Accreditation Waiting Area, then wait for, namely blanking frequency converter rotating speed keeps original size, does not change; Otherwise, judge mine-supplying quantity deviation
whether forward enters N3 between regulatory region, if mine-supplying quantity deviation
forward enters N3 between regulatory region, then the running frequency of blanking frequency converter increases a
3hz; Otherwise, judge mine-supplying quantity deviation
whether enter M4 between Accreditation Waiting Area, if enter M4 between Accreditation Waiting Area, then wait for, namely blanking frequency converter rotating speed keeps original size, does not change; Otherwise, judge mine-supplying quantity deviation
whether oppositely enter N3 between regulatory region, if mine-supplying quantity deviation
oppositely enter N3 between regulatory region, then the running frequency of blanking frequency converter reduces a
31hz (this be in order to avoid
after entering N4 by M4, blanking frequency converter rotating speed becomes suddenly comparatively large, causes mine-supplying quantity to become rapidly large, causes mine-supplying quantity to fluctuate the generation of large situation, so-called controls in advance in the other direction); Otherwise, judge mine-supplying quantity deviation
whether forward enters N4 between regulatory region, if mine-supplying quantity deviation
forward enters N4 between regulatory region, then the running frequency of blanking frequency converter increases a
4hz; Otherwise, judge mine-supplying quantity deviation
whether enter M5 between Accreditation Waiting Area, if enter M5 between Accreditation Waiting Area, then wait for, namely blanking frequency converter rotating speed keeps original size, does not change; Otherwise, judge mine-supplying quantity deviation
whether oppositely enter N4 between regulatory region, if mine-supplying quantity deviation
oppositely enter N4 between regulatory region, then the running frequency of blanking frequency converter reduces a
41hz (so-called controls in advance in the other direction); Otherwise, judge mine-supplying quantity deviation
whether forward enters N5 between regulatory region, if mine-supplying quantity deviation
forward enters N5 between regulatory region, then the running frequency of blanking frequency converter increases a
5hz.
Preferably, described a
1< a
2< a
3< a
4< a
5.
Preferably, described a
1be 0.3, described a
2be 0.7, described a
3be 1.0, described a
4be 1.4, described a
5be 1.8, described a
31be 1.2, described a
41be 1.3.
Have employed technique scheme, beneficial effect of the present invention is: the inventive method is the deviation range of mine-supplying quantity measured value and setting value, and be divided between Accreditation Waiting Area and between regulatory region, deviation drops between Accreditation Waiting Area, then blanking frequency converter rotating speed remains unchanged; Deviation drops between regulatory region, then blanking frequency converter rotating speed regulates accordingly, makes the measured value moment level off to setting value, thus guarantees that semi-autogenous mill is kept the safety in production.The advantage of the inventive method is clear thinking, reliability is high, control is flexible, and has more perfect intelligent logical arbitration functions, has certain controls in advance function simultaneously.The mine-supplying quantity that the inventive method can be applicable to metallurgical mine ore dressing link semi-autogenous mill controls.
The invention solves that the deviation of conventional method when the mine-supplying quantity of semi-autogenous mill controls between the mine-supplying quantity that causes and manufacturing technique requirent value fluctuate comparatively greatly, the problem that can not be stabilized in a scope allowed, thus ensure that semi-autogenous mill is kept the safety in production.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment of the present invention control system;
Fig. 2 is the flow chart of embodiment of the present invention control method;
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is further described.
A kind of semi-autogenous mill mine-supplying quantity control method, comprises the following steps:
1, providing semi-autogenous mill mine-supplying quantity setting value SP is (800t/h), and it is (830t/h) that mine-supplying quantity measured value obtains PV through glide filter process, and measured value PV and setting value SP subtracts each other, and obtains mine-supplying quantity deviation
(30t/h).
2, according to greatest measurement PV
maxbe (850t/h), obtain deviation maximum
interval
m1, N1, M2, N2, M3, N3, M4, N4, M5, N5 ten subintervals are divided into successively from left end 0.Wherein between N1, N2, N3, N4, N5 five subinterval name regulatory regions; Between name Accreditation Waiting Area, 5 subintervals such as M1, M2, M3, M4, M5.
Interval relation:
It is 0 that every two adjacent intervals are occured simultaneously, i.e. M1 ∩ N1=N1 ∩ M2=M2 ∩ N2=N2 ∩ M3=M3 ∩ N3=N3 ∩ M4=M4 ∩ N4=N4 ∩ M5=M5 ∩ N5=0.
All interval unions are
i.e. M1 U N1 U M2 U N2 U M3 U N3 U M4 U N4 UM5 U
Generally, the length between M1, M2, M3, M4, M5 five Accreditation Waiting Areas can be established equal, and the length between single regulatory region is greater than the length between Accreditation Waiting Area.
3, blanking frequency converter rotational speed operation principle is formulated:
Mine-supplying quantity deviation
be greater than 0, when namely mine-supplying quantity measured value is greater than setting value, need the running frequency of blanking frequency converter to reduce (such as reducing 0.7Hz), namely reduce blanking frequency converter rotating speed, thus reduce mine-supplying quantity.
Mine-supplying quantity deviation
be less than 0, when namely mine-supplying quantity measured value is less than setting value, need the running frequency of blanking frequency converter to increase (such as increasing 0.7Hz), namely increase blanking frequency converter rotating speed, thus increase mine-supplying quantity.
4, in mine-supplying quantity deviation
when being greater than 0 (namely mine-supplying quantity measured value PV is greater than setting value SP), judge mine-supplying quantity deviation
drop between Accreditation Waiting Area still between regulatory region, if drop between Accreditation Waiting Area, then blanking frequency converter rotating speed keeps original size, does not change; If drop between regulatory region, then judge again to drop between which regulatory region, and reduce the rotating speed of frequency converter according to the running frequency controlled quentity controlled variable of corresponding blanking frequency converter.It should be noted, when mine-supplying quantity deviation
when oppositely entering N3 between adjacent regulatory region by M4 between Accreditation Waiting Area or when oppositely entering N4 between adjacent regulatory region by M5 between Accreditation Waiting Area, carry out opposite direction controls in advance, namely the rotating speed of blanking frequency converter is suitably increased, to avoid blanking frequency converter rotating speed to become suddenly less, mine-supplying quantity is caused to fluctuate the generation of large situation.
5, in mine-supplying quantity deviation
when being less than 0 (namely mine-supplying quantity measured value PV is less than setting value SP), judgment bias
drop between Accreditation Waiting Area still between regulatory region, if drop between Accreditation Waiting Area, then blanking frequency converter rotating speed keeps original size, does not change; If drop between regulatory region, then judge again to drop between which regulatory region, and increase the rotating speed of frequency converter according to the running frequency controlled quentity controlled variable of corresponding blanking frequency converter.It should be noted, work as deviation
when oppositely entering N3 between adjacent regulatory region by M4 between Accreditation Waiting Area or when oppositely entering N4 between adjacent regulatory region by M5 between Accreditation Waiting Area, carry out opposite direction controls in advance, namely the rotating speed of blanking frequency converter is suitably reduced, to avoid blanking frequency converter rotating speed to become suddenly comparatively large, mine-supplying quantity is caused to fluctuate the generation of large situation.
As shown in Figure 1, mine-supplying quantity instrumentation records actual mine-supplying quantity signal PV, and subtract each other with mine-supplying quantity setting value SP, obtain difference, this difference, according to logic control algorithm of the present invention, exports control signal, controls the rotating speed of frequency converter, thus change the discharge quantity of blanking belt, namely change the mine-supplying quantity of semi-autogenous mill.This closed-loop system structure chart, guarantees that actual mine-supplying quantity PV follows the tracks of mine-supplying quantity setting value SP, namely guarantees within the scope that the difference of actual mine-supplying quantity PV and mine-supplying quantity setting value SP allows in production technology.
As shown in Figure 2, according to greatest measurement PV
max, obtain deviation maximum
interval
10 subintervals such as M1, N1, M2, N2, M3, N3, M4, N4, M5, N5 are divided into successively from left end 0.It is 0 that every two adjacent intervals are occured simultaneously.All interval unions are
wherein between name Accreditation Waiting Area, 5 subintervals such as M1, M2, M3, M4, M5; Between 5 subinterval name regulatory regions such as N1, N2, N3, N4, N5.Deviation drops between Accreditation Waiting Area, then frequency converter frequency remains unchanged; Deviation drops between regulatory region, then frequency converter frequency regulates accordingly.It should be noted, work as deviation
when oppositely entering N3 between adjacent regulatory region by M4 between Accreditation Waiting Area or when oppositely entering N4 between adjacent regulatory region by M5 between Accreditation Waiting Area, reciprocal controls in advance be carried out, fluctuate the generation of large situation to avoid mine-supplying quantity.
Operating procedure of the present invention comprises:
1, semi-autogenous mill mine-supplying quantity operation interface START button is clicked;
2, in mine-supplying quantity setting value frame, input mine-supplying quantity setting value SP (t/h);
3, by acquisition system sampling actual measurement mine-supplying quantity signal (t/h);
4, computer system is according to actual measurement mine-supplying quantity signal, automatically carries out glide filter, calculates mine-supplying quantity measured value PV (t/h);
5, the mine-supplying quantity measured value PV after glide filter and setting value SP subtracts each other, and obtains mine-supplying quantity deviation
judge mine-supplying quantity deviation
whether be greater than 0, if mine-supplying quantity deviation
be greater than 0, then perform following (i); Otherwise, judge mine-supplying quantity deviation
whether be less than 0, if mine-supplying quantity deviation
be less than 0, then perform following (ii); Otherwise blanking frequency converter rotating speed keeps original size, does not change.
I () judges mine-supplying quantity deviation
whether enter M1 between Accreditation Waiting Area, if enter M1 between Accreditation Waiting Area, then wait for, namely blanking frequency converter rotating speed keeps original size, does not change; Otherwise, judge mine-supplying quantity deviation
whether forward enters N1 between regulatory region, if mine-supplying quantity deviation
forward enters N1 between regulatory region, then the running frequency of blanking frequency converter reduces a
1hz; Otherwise, judge mine-supplying quantity deviation
whether enter M2 between Accreditation Waiting Area, if enter M2 between Accreditation Waiting Area, then wait for, namely blanking frequency converter rotating speed keeps original size, does not change; Otherwise, judge mine-supplying quantity deviation
whether forward enters N2 between regulatory region, if mine-supplying quantity deviation
forward enters N2 between regulatory region, then the running frequency of blanking frequency converter reduces a
2hz; Otherwise, judge mine-supplying quantity deviation
whether enter M3 between Accreditation Waiting Area, if enter M3 between Accreditation Waiting Area, then wait for, namely blanking frequency converter rotating speed keeps original size, does not change; Otherwise, judge mine-supplying quantity deviation
whether forward enters N3 between regulatory region, if mine-supplying quantity deviation
forward enters N3 between regulatory region, then the running frequency of blanking frequency converter reduces a
3hz; Otherwise, judge
do you enter M4 between Accreditation Waiting Area? if enter M4 between Accreditation Waiting Area, then wait for, namely blanking frequency converter rotating speed keeps original size, does not change; Otherwise, judge mine-supplying quantity deviation
whether oppositely enter N3 between regulatory region, if mine-supplying quantity deviation
oppositely enter N3 between regulatory region, then the running frequency of blanking frequency converter increases a
31hz (this be in order to avoid
after entering N4 by M4, blanking frequency converter rotating speed becomes suddenly less, causes mine-supplying quantity to diminish rapidly, causes mine-supplying quantity to fluctuate the generation of large situation, so-called controls in advance in the other direction); Otherwise, judge mine-supplying quantity deviation
whether forward enters N4 between regulatory region, if mine-supplying quantity deviation
forward enters N4 between regulatory region, then the running frequency of blanking frequency converter reduces a
4hz; Otherwise, judge mine-supplying quantity deviation
whether enter M5 between Accreditation Waiting Area, if enter M5 between Accreditation Waiting Area, then wait for, namely blanking frequency converter rotating speed keeps original size, does not change; Otherwise, judge mine-supplying quantity deviation
whether oppositely enter N4 between regulatory region, if mine-supplying quantity deviation
oppositely enter N4 between regulatory region, then the running frequency of blanking frequency converter increases a
41hz (so-called controls in advance in the other direction); Otherwise, judge mine-supplying quantity deviation
whether forward enters N5 between regulatory region, if mine-supplying quantity deviation
forward enters N5 between regulatory region, then the running frequency of blanking frequency converter reduces a
5hz.
(ii) mine-supplying quantity deviation
take absolute value, namely
(be intended to interval-
be mirrored to interval
make the normalization of problem sameization), judge mine-supplying quantity deviation
whether enter M1 between Accreditation Waiting Area, if enter M1 between Accreditation Waiting Area, then wait for, namely blanking frequency converter rotating speed keeps original size, does not change; Otherwise, judge mine-supplying quantity deviation
whether forward enters N1 between regulatory region, if mine-supplying quantity deviation
forward enters N1 between regulatory region, then the running frequency of cloth blanking frequency converter increases a
1hz; Otherwise, judge mine-supplying quantity deviation
whether enter M2 between Accreditation Waiting Area, if enter M2 between Accreditation Waiting Area, then wait for, namely blanking frequency converter rotating speed keeps original size, does not change; Otherwise, judge mine-supplying quantity deviation
whether forward enters N2 between regulatory region, if mine-supplying quantity deviation
forward enters N2 between regulatory region, then the running frequency of blanking frequency converter increases a
2hz; Otherwise, judge mine-supplying quantity deviation
whether enter M3 between Accreditation Waiting Area, if enter M3 between Accreditation Waiting Area, then wait for, namely blanking frequency converter rotating speed keeps original size, does not change; Otherwise, judge mine-supplying quantity deviation
whether forward enters N3 between regulatory region, if mine-supplying quantity deviation
forward enters N3 between regulatory region, then the running frequency of blanking frequency converter increases a
3hz; Otherwise, judge mine-supplying quantity deviation
whether enter M4 between Accreditation Waiting Area, if enter M4 between Accreditation Waiting Area, then wait for, namely blanking frequency converter rotating speed keeps original size, does not change; Otherwise, judge mine-supplying quantity deviation
whether oppositely enter N3 between regulatory region, if mine-supplying quantity deviation
oppositely enter N3 between regulatory region, then the running frequency of blanking frequency converter reduces a
31hz (this be in order to avoid
after entering N4 by M4, blanking frequency converter rotating speed becomes suddenly comparatively large, causes mine-supplying quantity to become rapidly large, causes mine-supplying quantity to fluctuate the generation of large situation, so-called controls in advance in the other direction); Otherwise, judge mine-supplying quantity deviation
whether forward enters N4 between regulatory region, if mine-supplying quantity deviation
forward enters N4 between regulatory region, then the running frequency of blanking frequency converter increases a
4hz; Otherwise, judge mine-supplying quantity deviation
whether enter M5 between Accreditation Waiting Area, if enter M5 between Accreditation Waiting Area, then wait for, namely blanking frequency converter rotating speed keeps original size, does not change; Otherwise, judge mine-supplying quantity deviation
whether oppositely enter N4 between regulatory region, if mine-supplying quantity deviation
oppositely enter N4 between regulatory region, then the running frequency of blanking frequency converter reduces a
41hz (so-called controls in advance in the other direction); Otherwise, judge mine-supplying quantity deviation
whether forward enters N5 between regulatory region, if mine-supplying quantity deviation
forward enters N5 between regulatory region, then the running frequency of blanking frequency converter increases a
5hz.
In order to make mine-supplying quantity measured value depart from setting value far away time, the running frequency movement range of blanking frequency converter is larger, thus makes mine-supplying quantity measured value rapid advance in setting value, above-mentioned a
1< a
2< a
3< a
4< a
5.In the present embodiment, a
10.3, a
20.7, a
31.0, a
41.4, a
51.8, a
311.2, a
411.3.
The invention solves that the deviation of conventional method when the mine-supplying quantity of semi-autogenous mill controls between the mine-supplying quantity that causes and manufacturing technique requirent value fluctuate comparatively greatly, the problem that can not be stabilized in a scope allowed, thus ensure that semi-autogenous mill is kept the safety in production, the mine-supplying quantity that can be applicable to metallurgical mine ore dressing link semi-autogenous mill controls.
The present invention is not limited to above-mentioned concrete embodiment, and those of ordinary skill in the art is from above-mentioned design, and without performing creative labour, done all conversion, all drop within protection scope of the present invention.
Claims (4)
1. a semi-autogenous mill mine-supplying quantity control method, is characterized in that, comprises the following steps: provide semi-autogenous mill mine-supplying quantity setting value SP, and obtain mine-supplying quantity measured value PV through glide filter process, mine-supplying quantity measured value PV and setting value SP subtracts each other, and obtains mine-supplying quantity deviation
according to greatest measurement PV
max, obtain deviation maximum
interval
m1, N1, M2, N2, M3, N3, M4, N4, M5, N5 ten subintervals are divided into successively, wherein between N1, N2, N3, N4, N5 five subinterval name regulatory regions from left end 0; Between name Accreditation Waiting Area, M1, M2, M3, M4, M5 five subintervals; It is 0 that every two adjacent intervals are occured simultaneously; All interval unions are
if the length between M1, M2, M3, M4, M5 five Accreditation Waiting Areas is equal, the length between single regulatory region is greater than the length between Accreditation Waiting Area; Interval approach axis, i.e. mine-supplying quantity deviation
entered the direction in another interval by an interval, be called forward from left to right and enter, deviation
enter interval N2 by interval M2 to be called
forward enters N2, otherwise, be called and oppositely enter; Because measured value is continuous print, deviation
adjacent interval can only be entered by an interval, and can not adjacent interval be striden across and directly enter other interval; Deviation
be greater than 0, when namely mine-supplying quantity measured value is greater than setting value, need the running frequency of blanking frequency converter to reduce some Hz, namely reduce the rotating speed of blanking frequency converter, thus mine-supplying quantity is reduced; Deviation
be less than 0, when namely mine-supplying quantity measured value is less than setting value, need the running frequency of blanking frequency converter to increase some Hz, namely increase the rotating speed of blanking frequency converter, thus mine-supplying quantity is increased.
2. a kind of semi-autogenous mill mine-supplying quantity control method as claimed in claim 1, it is characterized in that, operating procedure comprises:
(1) semi-autogenous mill mine-supplying quantity operation interface START button, is clicked;
(2), in mine-supplying quantity setting value frame, input mine-supplying quantity setting value SP;
(3), by acquisition system sampling actual measurement mine-supplying quantity signal;
(4), computer system according to actual measurement mine-supplying quantity signal, automatically carry out glide filter, calculate mine-supplying quantity measured value PV;
(5) the mine-supplying quantity measured value PV, after glide filter and setting value SP subtracts each other, and obtains mine-supplying quantity deviation
judge mine-supplying quantity deviation
whether be greater than 0, if mine-supplying quantity deviation
be greater than 0, then perform following (i); Otherwise, judge mine-supplying quantity deviation
whether be less than 0, if mine-supplying quantity deviation
be less than 0, then perform following (ii); Otherwise blanking frequency converter rotating speed keeps original size, does not change;
I () judges mine-supplying quantity deviation
whether enter M1 between Accreditation Waiting Area, if enter M1 between Accreditation Waiting Area, then wait for, namely blanking frequency converter rotating speed keeps original size, does not change; Otherwise, judge mine-supplying quantity deviation
whether forward enters N1 between regulatory region, if mine-supplying quantity deviation
forward enters N1 between regulatory region, then the running frequency of blanking frequency converter reduces a
1hz; Otherwise, judge mine-supplying quantity deviation
whether enter M2 between Accreditation Waiting Area, if enter M2 between Accreditation Waiting Area, then wait for, namely blanking frequency converter rotating speed keeps original size, does not change; Otherwise, judge mine-supplying quantity deviation
whether forward enters N2 between regulatory region, if mine-supplying quantity deviation
forward enters N2 between regulatory region, then the running frequency of blanking frequency converter reduces a
2hz; Otherwise, judge mine-supplying quantity deviation
whether enter M3 between Accreditation Waiting Area, if enter M3 between Accreditation Waiting Area, then wait for, namely blanking frequency converter rotating speed keeps original size, does not change; Otherwise, judge mine-supplying quantity deviation
whether forward enters N3 between regulatory region, if mine-supplying quantity deviation
forward enters N3 between regulatory region, then the running frequency of blanking frequency converter reduces a
3hz; Otherwise, judge
whether enter M4 between Accreditation Waiting Area, if enter M4 between Accreditation Waiting Area, then wait for, namely blanking frequency converter rotating speed keeps original size, does not change; Otherwise, judge mine-supplying quantity deviation
whether oppositely enter N3 between regulatory region, if mine-supplying quantity deviation
oppositely enter N3 between regulatory region, then in order to avoid
after entering N4 by M4, blanking frequency converter rotating speed becomes suddenly less, causes mine-supplying quantity to diminish rapidly, and cause mine-supplying quantity to fluctuate the generation of large situation, in the other direction controls in advance, the running frequency of blanking frequency converter increases a
31hz; Otherwise, judge mine-supplying quantity deviation
whether forward enters N4 between regulatory region, if mine-supplying quantity deviation
forward enters N4 between regulatory region, then the running frequency of blanking frequency converter reduces a
4hz; Otherwise, judge mine-supplying quantity deviation
whether enter M5 between Accreditation Waiting Area, if enter M5 between Accreditation Waiting Area, then wait for, namely blanking frequency converter rotating speed keeps original size, does not change; Otherwise, judge mine-supplying quantity deviation
whether oppositely enter N4 between regulatory region, if mine-supplying quantity deviation
oppositely enter N4 between regulatory region, then carry out opposite direction controls in advance, the running frequency of blanking frequency converter increases a
41hz; Otherwise, judge mine-supplying quantity deviation
whether forward enters N5 between regulatory region, if mine-supplying quantity deviation
forward enters N5 between regulatory region, then the running frequency of blanking frequency converter reduces a
5hz;
(ii) mine-supplying quantity deviation
take absolute value, judge mine-supplying quantity deviation
whether enter M1 between Accreditation Waiting Area, if enter M1 between Accreditation Waiting Area, then wait for, namely blanking frequency converter rotating speed keeps original size, does not change; Otherwise, judge mine-supplying quantity deviation
whether forward enters N1 between regulatory region, if mine-supplying quantity deviation
forward enters N1 between regulatory region, then the running frequency of blanking frequency converter increases a
1hz; Otherwise, judge mine-supplying quantity deviation
whether enter M2 between Accreditation Waiting Area, if enter M2 between Accreditation Waiting Area, then wait for, namely blanking frequency converter rotating speed keeps original size, does not change; Otherwise, judge mine-supplying quantity deviation
whether forward enters N2 between regulatory region, if mine-supplying quantity deviation
forward enters N2 between regulatory region, then the running frequency of blanking frequency converter increases a
2hz; Otherwise, judge mine-supplying quantity deviation
whether enter M3 between Accreditation Waiting Area, if enter M3 between Accreditation Waiting Area, then wait for, namely blanking frequency converter rotating speed keeps original size, does not change; Otherwise, judge mine-supplying quantity deviation
whether forward enters N3 between regulatory region, if mine-supplying quantity deviation
forward enters N3 between regulatory region, then the running frequency of blanking frequency converter increases a
3hz; Otherwise, judge mine-supplying quantity deviation
whether enter M4 between Accreditation Waiting Area, if enter M4 between Accreditation Waiting Area, then wait for, namely blanking frequency converter rotating speed keeps original size, does not change; Otherwise, judge mine-supplying quantity deviation
whether oppositely enter N3 between regulatory region, if mine-supplying quantity deviation
oppositely enter N3 between regulatory region, then in order to avoid
after entering N4 by M4, blanking frequency converter rotating speed becomes suddenly comparatively large, causes mine-supplying quantity to become rapidly large, causes mine-supplying quantity to fluctuate the generation of large situation, carries out opposite direction controls in advance, the running frequency reduction a of blanking frequency converter
31hz; Otherwise, judge mine-supplying quantity deviation
whether forward enters N4 between regulatory region, if mine-supplying quantity deviation
forward enters N4 between regulatory region, then the running frequency of blanking frequency converter increases a
4hz; Otherwise, judge mine-supplying quantity deviation
whether enter M5 between Accreditation Waiting Area, if enter M5 between Accreditation Waiting Area, then wait for, namely blanking frequency converter rotating speed keeps original size, does not change; Otherwise, judge mine-supplying quantity deviation
whether oppositely enter N4 between regulatory region, if mine-supplying quantity deviation
oppositely enter N4 between regulatory region, then carry out opposite direction controls in advance, the running frequency of blanking frequency converter reduces a
41hz; Otherwise, judge mine-supplying quantity deviation
whether forward enters N5 between regulatory region, if mine-supplying quantity deviation
forward enters N5 between regulatory region, then the running frequency of blanking frequency converter increases a
5hz.
3. a kind of semi-autogenous mill mine-supplying quantity control method as claimed in claim 2, is characterized in that, described a
1, a
2, a
3, a
4, a
5meet a
1< a
2< a
3< a
4< a
5.
4. a kind of semi-autogenous mill mine-supplying quantity control method as claimed in claim 3, is characterized in that, described a
1be 0.3, described a
2be 0.7, described a
3be 1.0, described a
4be 1.4, described a
5be 1.8, described a
31be 1.2, described a
41be 1.3.
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| CN201310257651.4A CN103350024B (en) | 2013-06-18 | 2013-06-18 | Ore feeding speed control method for semi-autogenous grinding machine |
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| CN103350024B true CN103350024B (en) | 2015-05-20 |
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| CN103599839B (en) * | 2013-11-25 | 2015-10-21 | 中冶长天国际工程有限责任公司 | A kind of method and apparatus obtaining the best mine-supplying quantity of ore mill |
| CN104624355B (en) * | 2015-01-09 | 2017-02-22 | 山西太钢不锈钢股份有限公司 | Raw ore storage yard blanking control method |
| CN109201213A (en) * | 2017-06-30 | 2019-01-15 | 北新集团建材股份有限公司 | A kind of crusher feeding control method and system |
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|---|---|---|---|---|
| US6182914B1 (en) * | 1998-04-30 | 2001-02-06 | Carle & Montanari S.P.A | Method and device for pre-milling a confectionery material |
| US6259222B1 (en) * | 1999-02-26 | 2001-07-10 | Alan K. Kira | Device and method for regulating maximum loading on an electric motor in an aggregate feed replenishing system |
| CN1836785A (en) * | 2006-04-24 | 2006-09-27 | 西安交通大学 | Powder-making system automatic control method for heat engine plant steel ball coal grinding mill |
| CN101244403A (en) * | 2008-03-17 | 2008-08-20 | 西安艾贝尔科技发展有限公司 | Optimization control method for grind grading process |
| CN101428246A (en) * | 2008-11-28 | 2009-05-13 | 东北大学 | Middle-storage low speed coal mill load switch control method |
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2013
- 2013-06-18 CN CN201310257651.4A patent/CN103350024B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6182914B1 (en) * | 1998-04-30 | 2001-02-06 | Carle & Montanari S.P.A | Method and device for pre-milling a confectionery material |
| US6259222B1 (en) * | 1999-02-26 | 2001-07-10 | Alan K. Kira | Device and method for regulating maximum loading on an electric motor in an aggregate feed replenishing system |
| CN1836785A (en) * | 2006-04-24 | 2006-09-27 | 西安交通大学 | Powder-making system automatic control method for heat engine plant steel ball coal grinding mill |
| CN101244403A (en) * | 2008-03-17 | 2008-08-20 | 西安艾贝尔科技发展有限公司 | Optimization control method for grind grading process |
| CN101428246A (en) * | 2008-11-28 | 2009-05-13 | 东北大学 | Middle-storage low speed coal mill load switch control method |
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