CN105306013B - One kind is used for temperature controlled high accuracy and is segmented pulse generating method - Google Patents
One kind is used for temperature controlled high accuracy and is segmented pulse generating method Download PDFInfo
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- CN105306013B CN105306013B CN201510595795.XA CN201510595795A CN105306013B CN 105306013 B CN105306013 B CN 105306013B CN 201510595795 A CN201510595795 A CN 201510595795A CN 105306013 B CN105306013 B CN 105306013B
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Abstract
It is used for temperature controlled high accuracy the present invention relates to one kind and is segmented pulse generating method.By the way that binary system PWM long pulses are decomposed into multiple short pulses, to reach the purpose of heat stepwise, the heat time can be avoided excessively to concentrate, cause temperature fluctuation to change greatly, damage heating plate, as shown in Figure 1.Because the pulse after segmentation is shorter, compared to decomposition prepulse, temperature control precision can decline, in order to solve this problem, multiple short pulses are counted and carry out closed loop feedback by the present invention, low level phase information after decomposition is uniformly added in each short pulse, realizes that circuit occurs for a kind of high accuracy, uniform heating pulse.
Description
Technical field
The present invention relates to the technical field of heating of magnetic resonance gyroscope instrument, particularly one kind to be used for temperature controlled high accuracy
It is segmented pulse generating method.
Background technology
Miniature magnetic resonance gyroscope has the characteristics such as small size, low-power consumption, high-performance, Larger Dynamic scope, it has also become new
The research emphasis and focus of inertia device.The performance of magnetic resonance gyroscope is influenceed by nuclear spin macroscopic moment, and directly
It is related to alkali metal atom density.To improve gyro signal to noise ratio, it is necessary to accurately be controlled the temperature of atomic air chamber, to reduce
Its fluctuation.
In order to improve control accuracy, existing temprature control method can use the longer binary number of bit wide to carry out PWM controls,
This control mode heat time compares concentration, and heating plate temperature oscillation scope can be caused larger, be unfavorable for the steady of final temperature
It is fixed.When long pulse heats, due to heating pulse Relatively centralized, the heating of heating plate temperature can be caused too fast, rather than heating pulse
During generation, temperature can drastically decline again, cause heating plate overheat or even damage, while also temperature control difficulty is brought higher
Difficulty.But if PWM control methods are carried out into Discrete control, bit wide can reduce, under conditions of no closed loop feedback, essence
Degree does not reach precision during high-bit width, and larger fluctuation equally occurs in temperature control.
The content of the invention
It is an object of the invention to overcome the above-mentioned deficiency of prior art, there is provided one kind is used for temperature controlled high accuracy
Pulse generating method is segmented, replaces concentrating using heat stepwise and heats, and can by the formation closed-loop control of disassembly in the binary system algorithm
Precision is not lost after ensureing segmentation.
One kind is used for temperature controlled high accuracy segmentation pulse generating method and comprised the following steps：
It is B [N-1 that step (1), which produces an effective heating pulse number,:0] original binary rapid pulse punching, wherein, it is former
The total length of beginning binary number pulse is 2N- 1, effective heating pulse is logic 1 in binary number pulse, and its after pulse is logic
0；
Effective heating pulse during step (2) rushes original binary rapid pulse is decomposed according to equation below, is decomposed into
2MGroup subpulse and 1 group of phase impulse：
B[N-1:0]=B [N-1:M]×2M+B[M-1:0]
Wherein, B [N-1:M] it is expressed as effective heating pulse length of subpulse, B [M-1:0] it is expressed as phase impulse
Effective heating pulse length；
The phase impulse is decomposed, and obtains B [M-1:0] individual 1 and 2M-B[M-1:0] -1 0, and be designated as phase impulse
Array [1,1,1 ... 1,0,0,0 ... 0]；
Wherein, every group of subpulse total length is 2N-M- 1 pulse, phase impulse total length are 2M- 1 pulse；
I+1 numerical value in phase impulse array [1,1,1 ... 1,0,0,0 ... 0] is added to 2 by step (3)MThe sub- arteries and veins of group
In effective heating pulse length in punching in i+1 group subpulse, effective heating pulse length B'(i of subpulse is obtained) be
B'(i)=B [N-1:M]+w(i)
Wherein, i=0,1,2,3 ... 2M- 1, initial value 0, w (i) is adjustment factor,
Step (4), to produce effective heating pulse length using pwm pulse generator be B'(i) pulse；
Step (5), i=i+1 is made, step (3) to step (4) is until i=2 againM-1。
It is used for temperature controlled high accuracy in above-mentioned one kind and is segmented pulse generating method, it is characterised in that：Described N=
19th, M=13.
The present invention has the advantages that compared with prior art：
(1) present invention realizes point of n cross-talk pulses by the way that long heating pulse is decomposed into the pulse of n cross-talks and phase impulse
Duan Jiare, while phase impulse is integrated into subpulse, effective heating pulse sum is constant after segmentation, and control accuracy is constant,
Solve the problems, such as segmentation after control accuracy decline, in addition, fusion after adjacent subpulse effective heating pulse length difference 1 or
0, adjacent heating subpulse length difference is away from smaller, achievable homogenous segmentations heating after segmentation；
(2) present invention is by the way of closed loop feedback, and by counting the current subpulse number occurred, adjustment is next will
The length of the subpulse of generation, phase impulse is integrated into each subpulse, improves the control accuracy of heat stepwise；
(3) present invention is heated using subpulse, and the heating pulse of concentration is divided into more parts, every part of heating pulse and non-heated
Pulse forms one group of subpulse, and compared with prior art due to heating pulse relative discrete, therefore heating plate temperature slowly raises,
Will not acute variation, can be very good to protect heating plate, while reduce the big ups and downs of temperature, improve the stability of temperature.
Brief description of the drawings
Fig. 1 is segmented pulse generating method principle flow chart for the present invention is a kind of for temperature controlled high accuracy；
Fig. 2 is segmented structural representation in pulse generating method for the present invention is a kind of for temperature controlled high accuracy；
Fig. 3 is the timing chart that pwm pulse generator generates in the inventive method；
Fig. 4 is the comparison diagram that effectively heating pulse heat stepwise and long pulse heat in the inventive method.
Embodiment
The present invention proposes that one kind is used for temperature controlled high accuracy and is segmented pulse generating method, and collection is replaced using heat stepwise
Middle heating, and precision after closed-loop control can ensure segmentation is formed by disassembly in the binary system algorithm and not lost, enter below in conjunction with the accompanying drawings
Row describes in detail.As shown in Figure 1 and Figure 2, the course of work of the invention includes：
It is B [N-1 that step (1), PID controller, which export an effective heating pulse number,:0] original binary rapid pulse
Rush in into disassembly in the binary system device, wherein, the total length of original binary rapid pulse punching is 2N- 1, effectively heated in binary number pulse
Pulse is logic 1, and its after pulse is logical zero；Effective heating pulse is used to realize temperature control；
Step (2), disassembly in the binary system device are by effective heating pulse during original binary rapid pulse is rushed according to equation below
Decomposed, be decomposed into 2MGroup subpulse and 1 group of phase impulse：
B[N-1:0]=B [N-1:M]×2M+B[M-1:0]
Wherein, B [N-1:M] it is expressed as effective heating pulse length of subpulse, B [M-1:0] it is expressed as phase impulse
Effective heating pulse length；
Because phase impulse length is less than subpulse group number, therefore phase impulse can be decomposed again,
The phase impulse is decomposed, and obtains B [M-1:0] individual 1 and 2M-B[M-1:0] -1 0, and be designated as phase impulse
Array [1,1,1 ... 1,0,0,0 ... 0]；Wherein, every group of subpulse total length is 2N-M- 1 pulse, wherein, every group of subpulse is total
Length is drawn according to below equation：
Wherein, 2n- 1 is the total length of original binary rapid pulse punching；2m- 1 is phase impulse total length；2mFor subpulse group
Number.Phase impulse total length is 2M- 1 pulse, and increasing on every group of subpulse in order.Every group of subpulse after decomposition
Effective heated length increase by 1 or 0, total length increase by 1.The total amount that n groups subpulse increases by 1 effective heating pulse is equal to phase arteries and veins
Effective heating pulse length in punching, realizes that phase impulse is integrated into subpulse, therefore only need to generate the sub- arteries and veins of n groups after decomposing
Punching, it is not necessary to phase impulse is additionally generated, while ensures that the heating pulse number that total heating pulse number and PID controller export is identical,
Temperature control precision is identical.
Effective heated length of subpulse after decomposition is passed to phase accumulator, phase by step (3), disassembly in the binary system device
Bit accumulator adds 1 or 0 realization that phase data is added to n group subpulses by adjusting effective heated length of every group of subpulse
On；I+1 numerical value in phase impulse array [1,1,1 ... 1,0,0,0 ... 0] is added to i+1 group in 2M group subpulses
In effective heating pulse length in pulse, effective heating pulse length B'(i of subpulse is obtained) be
B'(i)=B [N-1:M]+w(i) (2)
Wherein, i=0,1,2,3 ... 2M- 1, initial value 0, w (i) is adjustment factor,
Effective heated length of group subpulse after adjustment is passed into pwm pulse generator.
Step (4), to produce effective heating pulse length using pwm pulse generator be B'(i) pulse, pwm pulse hair
Subpulse occurs raw device successively, reaches subsection efect.One group of subpulse is often produced, the output of phase counter adds 1, and will
The subpulse group number occurred is sent to phase comparator.After n groups subpulse occurs, phase counter is reset.
Step (5), make i=i+1, repeat step (three) to step (4), until i=2M- 1, if phase counter
Output is more than phase impulse data, then effective heated length that subpulse occurs is added 1 by current group, otherwise adds 0, realizes closed loop control
System.
Wherein, step (2), (three) are decomposed into n groups subpulse and 1 group of phase impulse to binary add thermal pulse, pass through by
Phase impulse is integrated into n group subpulses, and pwm pulse generator need not additionally generate phase impulse, only need to generate length phase
Same n cross-talk pulses, realize the effect of segmentation PULSE HEATING.
Specific embodiment is described in further detail to the inventive method below：
Step (1), a bit wide are the binary number heating pulse B [18 that 19bit is exported by PID controller:0] enter
Disassembly in the binary system device；
Step (2) disassembly in the binary system device is by binary add thermal pulse B [18:0] be decomposed into 6bit subpulses data and
13bit phase impulse data：
B[18:0]=B [18:13]×213+B[12:0] (3)
Wherein：B[18:0] it is original binary number heating pulse data；B[18:13] it is high 6 seat of original binary number
PULSE HEATING pulse data；B[12:0] it is low 13 phase impulses heating pulse data.
After this step is decomposed, original long pulse can be decomposed into 213Group subpulse and one group of phase impulse, every group of subpulse
Total length is 63 pulses, effective heated length B [18:13]；Phase impulse total length is 213- 1 pulse, effective heated length
For B [12:0].
Because phase impulse length is less than subpulse group number, therefore phase impulse can be decomposed, phase arteries and veins after decomposition
Punching is by B [12:0] individual 1 and 213-B[12:0] individual 0 composition, 0 and 1 sum is 2 after decomposition13It is individual.
Phase impulse after decomposition can uniformly be increased to 2 by step (3), phase accumulator by way of closed loop feedback13
On group subpulse, effective heating pulse number increase by 1 or 0 of every group of subpulse, total length increase by 1.
Wherein B ' (i) be adjustment after subpulse effective heating pulse length, B [18:13] it is subpulse after original decomposition
Effective heated length, w (i) be phase accumulator output adjustment factor, i.e., the value in phase impulse array, i are phase
The output of counter, B [12:0] it is phase impulse information.
Step (4), by 2 after adjustment13Group subpulse is segmented by pwm pulse generator and generated, because phase information increases
It is added in every group of subpulse, therefore subpulse total length brings up to 64 by 63, pwm pulse generator need to only fix the maximum arteries and veins of generation
Rush the pulse signal that number is 64, it is not necessary to additionally generate 213Individual long phase impulse information.
After the generation of every group of subpulse of step (5), phase counter calculates the current subpulse group number i generated, and by i
Feed back to phase comparator.
The phase impulse data B [12 that phase comparator generates step (1):0] exported with step (5) phase counter
I be compared, according to comparative result using formula (2) control phase accumulator 1 or 0 are added to subpulse effective length, realize
Closed-loop control.If current phase count device output i is less than phase information B [12:0], then phase comparator output w (i)=1 is controlled
Phase accumulator processed adds 1 to subpulse effective length, and total length adds 1；Opposite then export 0, subpulse effective length adds 0, overall length
Degree plus 1.Often generation finishes the subpulse that one group of long degree is 64, phase counter i outputs increase by 1.When whole 213Group subpulse life
After, phase counter is reset, and waits the pulse generation of a new round.
The timing chart of pwm pulse generator generation is illustrated in figure 3, as seen from the figure, a complete waveform occurs
Cycle includes 2 altogether13Subpulse 4 after group adjustment.Every group of subpulse sequentially generates effective heating pulse 1, the phase impulse 2 of fusion
And non-heated pulse 3.One group of non-heated pulse between two adjacent groups heating pulse be present, prevent heating pulse from excessively concentrating damage
Bad heating plate.
Subpulse heat stepwise and the comparison diagram of long pulse heating are illustrated in figure 4, when long pulse heats as seen from the figure, by
In heating pulse Relatively centralized, the heating of heating plate temperature can be caused too fast, rather than when heating pulse occurs, temperature again can drastically under
Drop, cause heating plate overheat or even damage, while higher difficulty is also brought to temperature control difficulty.Using subpulse plus
Heat, can be by the heating pulse of concentration into 213Part, every part of heating pulse and non-heated pulse form one group of subpulse.Using this side
Formula heat, due to heating pulse relative discrete, therefore heating plate temperature slowly raises, will not acute variation, can be very good to protect
Heating plate is protected, while reduces the fluctuation of temperature.
The content not being described in detail in description of the invention belongs to the known technology of those skilled in the art.
Claims (2)
1. one kind, which is used for temperature controlled high accuracy, is segmented pulse generating method, it is characterised in that comprises the following steps：
It is B [N-1 that step (1), which produces an effective heating pulse number,:0] original binary rapid pulse punching, wherein, original two
The total length of system rapid pulse punching is 2N- 1, effective heating pulse is logic 1 in binary number pulse, and its after pulse is logical zero；
Effective heating pulse during step (2) rushes original binary rapid pulse is decomposed according to equation below, is decomposed into 2MGroup
Subpulse and 1 group of phase impulse：
B[N-1:0]=B [N-1:M]×2M+B[M-1:0]
Wherein, B [N-1:M] it is expressed as effective heating pulse length of subpulse, B [M-1:0] it is expressed as the effective of phase impulse
Heating pulse length；
The phase impulse is decomposed, and obtains B [M-1:0] individual 1 and 2M-B[M-1:0] -1 0, and it is designated as phase impulse array
[1,1,1…1,0,0,0…0]；
Wherein, every group of subpulse total length is 2N-M- 1 pulse, phase impulse total length are 2M- 1 pulse；
I+1 numerical value in phase impulse array [1,1,1 ... 1,0,0,0 ... 0] is added to 2 by step (3)MThe in group subpulse
In effective heating pulse length in i+1 group subpulses, effective heating pulse length B'(i of subpulse is obtained) be
B'(i)=B [N-1:M]+w(i)
Wherein, i=0,1,2,3 ... 2M- 1, initial value 0, w (i) is adjustment factor,
Step (4), to produce effective heating pulse length using pwm pulse generator be B'(i) pulse；
Step (5), i=i+1 is made, step (3) to step (4) is until i=2 againM-1。
It is 2. according to claim 1 a kind of for temperature controlled high accuracy segmentation pulse generating method, it is characterised in that：
Described N=19, M=13.
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| CN113815317B (en) * | 2020-11-30 | 2022-06-03 | 山东华菱电子股份有限公司 | Printing head heating control device and method based on segmented multipoint resistance measurement and printing head |
| CN112644183B (en) * | 2020-11-30 | 2021-09-14 | 山东华菱电子股份有限公司 | Multi-pulse heating control method based on segmented multipoint resistance measurement and printing head |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6393894B1 (en) * | 1999-07-27 | 2002-05-28 | Honeywell International Inc. | Gas sensor with phased heaters for increased sensitivity |
| CN102683582A (en) * | 2011-03-11 | 2012-09-19 | 曲炳郡 | Method for manufacturing high sensitivity magnetic sensor chip |
| CN104406860A (en) * | 2014-09-19 | 2015-03-11 | 燕山大学 | Physical analogue device for bimetallic laminated composite plate heterothermic current reinforcement composite technology |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6393894B1 (en) * | 1999-07-27 | 2002-05-28 | Honeywell International Inc. | Gas sensor with phased heaters for increased sensitivity |
| CN102683582A (en) * | 2011-03-11 | 2012-09-19 | 曲炳郡 | Method for manufacturing high sensitivity magnetic sensor chip |
| CN104406860A (en) * | 2014-09-19 | 2015-03-11 | 燕山大学 | Physical analogue device for bimetallic laminated composite plate heterothermic current reinforcement composite technology |
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