CN105334883B - A kind of Intelligent Feed-forward signal analysis method in vibration control system - Google Patents
A kind of Intelligent Feed-forward signal analysis method in vibration control system Download PDFInfo
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- CN105334883B CN105334883B CN201510686263.7A CN201510686263A CN105334883B CN 105334883 B CN105334883 B CN 105334883B CN 201510686263 A CN201510686263 A CN 201510686263A CN 105334883 B CN105334883 B CN 105334883B
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Abstract
Intelligent Feed-forward signal analysis method in a kind of vibration control system disclosed by the invention, it is the efficiency for vibration active control system, based on intelligent optimization algorithm, using it is long when ambient vibration input and output sampled data, by mathematical analysis, analysis contrast is surveyed and calculated to the frequency domain control signal after simplification, complete computation analysis module is formed, effective feedforward control interference signal is finally obtained, by the control of vibratory response value in permissible range.
Description
Technical field
Present invention relates particularly to the Intelligent Feed-forward signal analysis method in a kind of vibration control system.
Background technology
The general analysis method using feedback signal in current vibration control system, that is, pass through continual detection, root
Apply control load according to the test signal redesign fed back and vibration control is carried out to target, such method belongs to passive
Vibration control method, due to must constantly test, so its efficiency is not also high.
The content of the invention
The present invention is intended to provide a kind of efficient Active Vibration Control analysis method.
In order to solve the above problems, the invention provides the Intelligent Feed-forward signal analysis side in a kind of vibration control system
Method, comprises the following steps：
Step one：By it is long when ambient vibration input/output test and data acquisition, obtain ambient vibration input load and draw
The characteristic of force-responsive is started, and carries out obtaining dynamic response R caused by input load after effective FFT and contrastinpWith when
Between functional relation between t, as shown in following formula one：
Wherein, i and N is natural number；AiFor input load amplitude；ωiFor input load crest frequency；For input load
Phase variant parameter；
Step 2：It is assumed that the amplitude and crest frequency that apply control load match with input load, then apply control lotus
Dynamic response F caused by carryingctrlIt needs to be determined that actuator control load phase variant is joined in functional relation between time t
NumberAs shown in following formula two：
Wherein, i and N is natural number；For actuator control load phase variant parameter；
Step 3：According to formula one and the design fitness function of formula two, shown in following array function formula formula three：
Wherein, i and N is natural number；RoptFor fitness function；RctrlFor actuator control load phase variant parameter letter
Number；
Step 4：Fitness function convergence state condition is set up, equivalency transform turns into optimization problem：
Design variable:
Constraints：
Optimization aim：Ropt≤[Rgoal] formula six
Wherein, R in formula sixgoalFor optimization aim fitness function value；
Step 5：The solution and determination that introduce intelligent algorithm solution optimization problem meet the i values of formula six.
Intelligent Feed-forward signal analysis method in a kind of above-mentioned vibration control system, in addition to according to being determined in step 5
I values determine its corresponding actuator control load phase variant parameterAnd return it in step 2, it is determined that applying
Dynamic response F caused by control loadctrlWith the functional relation between time t.
Intelligent Feed-forward signal analysis method in a kind of above-mentioned vibration control system, in addition to the application of determination is controlled into lotus
Dynamic response F caused by carryingctrlFunctional relation between time t is carried in actuator as active control feed-forward information
On, inspection is controlled to vibrational system.
Intelligent Feed-forward signal analysis method in a kind of above-mentioned vibration control system, step 5 includes：
Step 1：The corresponding first generation fitness function of particle is calculated according to following population functional expression formula sevenValue；
Wherein, i and N is natural number；
For first generation fitness function；
Design variable in respectively described step 4Corresponding is first generation fitness function value；
Step 2：Whether the corresponding first generation fitness function value of each particle that evaluation above-mentioned steps 1 are calculated meets institute
The requirement of the formula six in step 4 is stated, ifMeet, it is determined that i value.
In Intelligent Feed-forward signal analysis method in a kind of above-mentioned vibration control system, the step 2If be all discontented with
The requirement of formula six in the foot step 4, according to the rule in the step 4, using the variation in intelligent algorithm, intersection,
Selection function circulation is determined more for particle variable, as shown in following formula eight：
Wherein,For the i-th generation particle variable of design variable；
According to the corresponding i-th generation fitness function of the following cycle calculations particle of population functional expression formula nineValue；
Wherein, i and N is natural number；
For the i-th generation fitness function；
I-th generation particle of the design variable respectively in formula eight becomes
AmountCorresponding is the i-th generation fitness function value；
Whether the corresponding i-th generation fitness function value of each particle that the above-mentioned every generation calculated is evaluated in circulation meets institute
The requirement of the formula six in step 4 is stated, ifMeet, it is determined that i value.
Beneficial effect
Intelligent Feed-forward signal analysis method in a kind of vibration control system disclosed by the invention, is actively controlled for vibration
The efficiency of system processed, based on intelligent optimization algorithm, using it is long when ambient vibration input and output sampled data, by mathematical analysis,
To the frequency domain control signal actual measurement after simplification and calculating analysis contrast, complete computation analysis module is formed, final acquisition is effective
Feedforward control interference signal, by vibratory response value control in permissible range.
Embodiment
The present invention is described in further detail with reference to specific embodiment, but it is not as a limitation of the invention.
Specifically, the Intelligent Feed-forward signal analysis method in a kind of vibration control system that the present invention is provided, including with
Lower step：
Step one：By it is long when ambient vibration input/output test and data acquisition, obtain ambient vibration input load and draw
The characteristic of force-responsive is started, and carries out obtaining dynamic response R caused by input load after effective FFT and contrastinpWith when
Between functional relation between t, as shown in following formula one：
Wherein, i and N is natural number；AiFor input load amplitude；ωiFor input load crest frequency；For input load
Phase variant parameter；
Step 2：It is assumed that the amplitude and crest frequency that apply control load match with input load, then apply control lotus
Dynamic response F caused by carryingctrlIt needs to be determined that actuator control load phase variant is joined in functional relation between time t
NumberAs shown in following formula two：
Wherein, i and N is natural number；For actuator control load phase variant parameter；
Step 3：According to formula one and the design fitness function of formula two, shown in following array function formula formula three：
Wherein, i and N is natural number；RoptFor fitness function；RctrlFor actuator control load phase variant parameter letter
Number；
Step 4：Fitness function convergence state condition is set up, equivalency transform turns into optimization problem：
Design variable:
Constraints：
Optimization aim：Ropt≤[Rgoal] formula six
Wherein, R in formula sixgoalFor optimization aim fitness function value；
Step 5：The solution and determination that introduce intelligent algorithm solution optimization problem meet the i values of formula six；
Step 6：Its corresponding actuator control load phase variant parameter is determined according to the i values determined in step 5And return it in step 2, it is determined that applying dynamic response F caused by control loadctrlWith the function between time t
Relational expression.
Step 7：By dynamic response F caused by the application control load of determinationctrlWith the functional relation between time t
It is carried in as active control feed-forward information in actuator, inspection is controlled to vibrational system.
The step of Intelligent Feed-forward signal analysis method in a kind of above-mentioned vibration control system five, includes：
Step 1：The corresponding first generation fitness function of particle is calculated according to following population functional expression formula sevenValue；
Wherein, i and N is natural number；
For first generation fitness function；
Design variable in respectively described step 4Corresponding is first generation fitness function value；
Step 2：Whether the corresponding first generation fitness function value of each particle that evaluation above-mentioned steps 1 are calculated meets institute
The requirement of the formula six in step 4 is stated, ifMeet, it is determined that i value.
IfThe requirement for the formula six being all unsatisfactory in the step 4, according to the rule in the step 4, utilizes intelligence
Variation, intersection, selection function circulation in energy algorithm are determined more for particle variable, as shown in following formula eight：
Wherein,For the i-th generation particle variable of design variable；
According to the corresponding i-th generation fitness function of the following cycle calculations particle of population functional expression formula nineValue；
Wherein, i and N is natural number；
For the i-th generation fitness function；
I-th generation particle of the design variable respectively in formula eight becomes
AmountCorresponding is the i-th generation fitness function value；
Whether the corresponding i-th generation fitness function value of each particle that the above-mentioned every generation calculated is evaluated in circulation meets institute
The requirement of the formula six in step 4 is stated, ifMeet, it is determined that i value.
It is described above, only it is the present invention preferably embodiment, not does any formal to technical scheme
Limitation.Every technical spirit according to the present invention makes any simple modification, form change and modification to above example, falls
Enter protection scope of the present invention.
Claims (5)
1. the Intelligent Feed-forward signal analysis method in a kind of vibration control system, it is characterised in that：Methods described includes following step
Suddenly：
Step one：By it is long when ambient vibration input/output test and data acquisition, obtain ambient vibration input load and cause dynamic
The characteristic of force-responsive, and carry out obtaining dynamic response R caused by input load after effective FFT and contrastinpWith time t
Between functional relation, as shown in following formula one：
Wherein, i and N is natural number；AiFor input load amplitude；ωiFor input load crest frequency；For input load phase
Variable parameter；
Step 2：It is assumed that the amplitude and crest frequency of actuator control load match with input load, then apply control load
Caused dynamic response FctrlIt needs to be determined that actuator control load phase variant parameter in functional relation between time tAs shown in following formula two：
Wherein, i and N is natural number；For actuator control load phase variant parameter；
Step 3：According to formula one and the design fitness function of formula two, shown in following array function formula formula three：
Wherein, i and N is natural number；RoptFor fitness function；RctrlFor actuator control load phase variant parametric function；
Step 4：Fitness function convergence state condition is set up, equivalency transform turns into optimization problem：
Design variable:
Constraints：
Optimization aim：Ropt≤[Rgoal] formula six
Wherein, R in formula sixgoalFor optimization aim fitness function value；
Step 5：The solution and determination that introduce intelligent algorithm solution optimization problem meet the i values of formula six.
2. the Intelligent Feed-forward signal analysis method in a kind of vibration control system according to claim 1, it is characterised in that：
Methods described also includes：
Its corresponding actuator control load phase variant parameter is determined according to the i values determined in step 5And returned
It is back in step 2, it is determined that applying dynamic response F caused by control loadctrlWith the functional relation between time t.
3. the Intelligent Feed-forward signal analysis method in a kind of vibration control system according to claim 2, it is characterised in that：
Methods described also includes：
By dynamic response F caused by the application control load of determinationctrlFunctional relation between time t is used as active control
Feed-forward information is carried in actuator, and inspection is controlled to vibrational system.
4. the Intelligent Feed-forward signal analysis method in a kind of vibration control system according to claim 1, it is characterised in that：
The step 5 includes：
Step 1：The corresponding first generation fitness function of particle is calculated according to following population functional expression formula sevenValue；
Wherein, i and N is natural number；
For first generation fitness function；
Design variable respectively in claim 1 in step 4Corresponding is first generation fitness function value；
Step 2：Whether the corresponding first generation fitness function value of each particle that evaluation above-mentioned steps 1 are calculated meets right will
The requirement of the formula six in 1 in step 4 is asked, ifMeet, it is determined that i value.
5. the Intelligent Feed-forward signal analysis method in a kind of vibration control system according to claim 4, it is characterised in that：
In the step 2If the requirement for the formula six being all unsatisfactory in claim 1 in step 4, according to step in claim 1
Rule in four, is determined many for particle variable, such as following formula eight using the variation in intelligent algorithm, intersection, selection function circulation
It is shown：
Wherein,For the i-th generation particle variable of design variable；
According to the corresponding i-th generation fitness function of the following cycle calculations particle of population functional expression formula nineValue；
Wherein, i and N is natural number；
For the i-th generation fitness function；
I-th generation particle variable of the design variable respectively in formula eightCorresponding is the i-th generation fitness function value；
Whether the corresponding i-th generation fitness function value of each particle of the above-mentioned every generation calculated of circulation evaluation meets right will
The requirement of the formula six in 1 in step 4 is asked, ifMeet, it is determined that i value.
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Address after: 100840 No. 27, Haidian District, Beijing, Wanshou Road Patentee after: CHINA ELECTRONICS ENGINEERING DESIGN INSTITUTE Co.,Ltd. Address before: 100840 No. 27, Haidian District, Beijing, Wanshou Road Patentee before: CHINA ELECTRONICS ENGINEERING DESIGN INSTITUTE |