CN103994859A - High-precision on-line dynamic balance detection control system and method - Google Patents
High-precision on-line dynamic balance detection control system and method Download PDFInfo
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Abstract
The invention discloses a high-precision on-line dynamic balance detection control system and method. The high-precision on-line dynamic balance detection control system comprises a rotating machine, a vibration sensor, a rotation speed sensor, an imbalance adjusting device, a binuclear embedded type control module and an upper computer. The method includes the first operating step of the first layer of network dynamic balance control, wherein a DSP core of the binuclear embedded type control module collects data of the vibration sensor and the rotation speed sensor in real time, calculates an output control signal and controls the motion of the imbalance adjusting device; the second operating step of the second layer of network dynamic balance control, wherein an ARM core of the binuclear embedded type control module is in communication with the upper computer through a wireless transmitting and receiving module, accurate modeling is carried out on a control model of the rotating machine in the upper computer, and a correction control signal is output periodically to accurately correct the motion of the imbalance adjusting device. By the adoption of the system and method, the advantages of the binuclear embedded type control module and the upper computer can be utilized fully, and the dynamic balance situation of the rotating machine is accurately detected and controlled on line.
Description
Technical field
The present invention relates to a kind of high precision on-line dynamic balancing and detect control system and method, be specially adapted to the accurate on-line dynamic balancing control of high-speed rotating machine.
Technical background
The unbalance vibration causing due to rotor quality skewness is to affect one of rotating machinery operational effect and safe major influence factors; on-line dynamic balancing technology can be carried out to the equilibrium state of rotor the detection control of real-time online; eliminate the imbalance of rotating machinery generation in service; can effectively protect rotating machinery and operating personnel around; extend the serviceable life of rotating machinery, therefore significant.There is certain defect in current existing method: only uses embedded type control module or only use host computer to carry out algorithm process and control to amount of unbalance.Embedded type control module and host computer respectively have superiority, and wherein flush bonding module real-time is good, but arithmetic capability is limited, cannot in the situation that requirement of real-time is high, use complicated accurate algorithm; Host computer arithmetic capability is stronger, but real-time is poor, cannot system be responded fast and be controlled.
At present, for on-line dynamic balancing technology, Chinese Patent Application No. " 200710063642.6 " discloses " a kind of high accuracy number online dynamic balance based on FPGA detects " one by one; Chinese Patent Application No. " 201210363937.6 " discloses " a kind of online initiatively transient equilibrium measure and control device and investigating method " one by one; Chinese Patent Application No. " 200910235439.1 " discloses " dynamic balance test method and device " one by one; Chinese Patent Application No. " 200910235439.1 " discloses " dynamic balance test method and device " one by one; Chinese Patent Application No. " 201210442081.1 " discloses " a kind of dynamic balancing measurement method of rotating machinery " one by one.In published invention or document, do not mention the example that improves on-line dynamic balancing detection control accuracy with embedded type control module and host computer formation double-layer network.
Summary of the invention
The defect existing for prior art, the object of this invention is to provide a kind of high precision on-line dynamic balancing and detect control system and method, can make full use of the advantage of double-core embedded type control module and host computer, the online accurate transient equilibrium situation of controlling rotating machinery that detects, eliminate the control Problem of Failure in rotating machinery long-play situation, thereby in the serviceable life of prolonged mechanical, increase the security of system.
For achieving the above object, the present invention has adopted following technical scheme:
A kind of high precision on-line dynamic balancing detects control system, it comprises rotating machinery, vibration transducer, speed probe, uneven adjusting gear, double-core embedded type control module and host computer, it is characterized in that: the input end of vibration transducer and speed probe is connected with rotating machinery, the output terminal of vibration transducer and speed probe is connected with double-core embedded type control module, uneven adjusting gear connects respectively rotating machinery and double-core embedded type control module, and host computer is connected with double-core embedded type control module by wireless network.Described double-core embedded type control module includes DSP core and ARM core, be responsible for detecting in real time rotating machinery vibrating and the tach signal of vibration transducer and speed probe conversion, carrying out signal processing and transient equilibrium algorithm calculates, and send to host computer to carry out the control model of rotating machinery to carry out Accurate Model related data, produce periodic correcting controlling signal, the final motion of controlling uneven adjusting gear, realizes transient equilibrium and detects control.
A kind of high precision on-line dynamic balancing detects control method, comprises the following steps:
(1) ground floor network transient equilibrium control: the DSP core of described double-core embedded type control module Real-time Collection under the triggering of described speed probe is interrupted is arranged on the described vibration transducer data on described rotating machinery, the data that gather are through zero phase-shift iir filter filtering interference signals, then go out amplitude and the phase place of amount of unbalance by FFT transformation calculations, then by sample incomplete vibration signal and eliminate the numerical fluctuations that Different sampling period brings of many queues filtering technique filtering, finally calculate output control signal by factor of influence method, control the motion of described uneven adjusting gear, and then realize the transient equilibrium control effect of ground floor network,
(2) second layer network transient equilibrium control: in ground floor network transient equilibrium control, in ground floor network, the filtered data of many queues are issued ARM core by the double-core communication of described double-core embedded type control module, and send and accept module and described host computer communicates by ARM core wireless, in described host computer, utilize its powerful computing power to use group's algorithm to carry out Accurate Model to the control model of described rotating machinery, and the periodically accurate motion of proofreading and correct described uneven adjusting gear of output calibration control signal, and then realize the transient equilibrium control effect of second layer network.
Above-mentioned high precision on-line dynamic balancing detects in control method, allows the vibration transducer data that collect through the processing of zero phase-shift iir filter, has both ensured the rapidity of filtering, the skew that does not produce again phase place.
Above-mentioned high precision on-line dynamic balancing detects in control method, described many queues filtering technique refers to: adopt many group First Input First Outputs taking sampling number as foundation, amplitude and phase place to FFT transformation calculations amount of unbalance are out stored respectively, in the time that the data total amount of a certain queue stores meets the queue length of setting, assert that the sampling number of this queue is for normal, calculate the mean value of data in this queue as output, remove after the data of other queue stores, carry out the filtering of a new round.
The present invention compared with prior art, has following outstanding substantive distinguishing features and significant progressive:
(1) the employing two-tier network of novelty of the present invention carries out high precision detection control to on-line dynamic balancing, can utilize the fast-response of double-core embedded type module to control in real time transient equilibrium, the advantage such as powerful calculating ability and large storage that can make full use of again host computer is carried out complicated Accurate Model, and then transient equilibrium is proofreaied and correct, be of value to and ensureing, under the prerequisite of real-time, to improve dynamically balanced control accuracy.
(2) the present invention adopts effectively sample incomplete vibration signal and eliminate the numerical fluctuations brought of Different sampling period of filtering of many queues filtering technique, make to detect control system and method has stronger robustness to the noise of practical work environment, versatility is enhanced.
(3) the present invention adopts ARM+DSP double-core embedded type control module, makes full use of the network communication advantage of ARM core and the computing advantage of DSP core, can improve largely on-line dynamic balancing and detect real-time and the reliability controlled.
brief description of the drawings:
Fig. 1 is the overall construction drawing that a kind of high precision on-line dynamic balancing of the present invention detects control system.
Fig. 2 is the process flow diagram that a kind of high precision on-line dynamic balancing involved in the present invention detects control method.
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment, the present invention is described in further detail.
Embodiment mono-:
As shown in Figure 1, this high precision on-line dynamic balancing detects control system, it comprises that rotating machinery (1.1) is biological culture cradle vibrate platform, vibration transducer (1.2) for range be the acceleration transducer of five acceleration of gravity, speed probe (1.3) is high speed optoelectronic switch, uneven adjusting gear (1.4) is automatically to control removable quality slide block, the OMAPL138 double-core module that double-core embedded type control module (1.5) is TIX, host computer (1.6), it is characterized in that: the input end of vibration transducer (1.2) and speed probe (1.3) is connected with rotating machinery (1.1), the output terminal of vibration transducer (1.2) and speed probe (1.3) is connected with double-core embedded type control module (1.5), uneven adjusting gear (1.4) connects respectively rotating machinery (1.1) and double-core embedded type control module (1.5), host computer (1.6) is connected with double-core embedded type control module (1.5) by wireless network, described double-core embedded type control module (1.5) includes DSP core and ARM core, be responsible for detecting in real time rotating machinery (1.1) vibration and the tach signal of vibration transducer (1.2) and speed probe (1.3) conversion, carrying out signal processing and transient equilibrium algorithm calculates, and send to host computer (1.6) to carry out the control model of rotating machinery (1.1) to carry out Accurate Model related data, produce periodic correcting controlling signal, the final motion of controlling uneven adjusting gear (1.4), realizes transient equilibrium and detects control.
Embodiment bis-:
As shown in Figure 2, this high precision on-line dynamic balancing detects control method, adopt said system to carry out balance control, can detect accurately online the transient equilibrium situation of controlling rotating machinery, eliminate the control Problem of Failure in rotating machinery long-play situation, thereby in the serviceable life of prolonged mechanical, increase the security of system.Concrete operation step is as follows:
(1) ground floor network transient equilibrium control: the DSP core of double-core embedded type control module (1.5) Real-time Collection under the triggering of speed probe (1.3) is interrupted is arranged on vibration transducer (1.2) data on rotating machinery (1.1), the data that gather are through zero phase-shift iir filter filtering interference signals, then go out amplitude and the phase place of amount of unbalance by FFT transformation calculations, then by sample incomplete vibration signal and eliminate the numerical fluctuations that Different sampling period brings of many queues filtering technique filtering, finally calculate output control signal by factor of influence method, control the motion of uneven adjusting gear (1.4), and then realize the transient equilibrium control effect of ground floor network.
(2) second layer network transient equilibrium control: in ground floor network transient equilibrium control, in ground floor network, the filtered data of many queues are issued ARM core by the double-core communication of double-core embedded type control module (1.5), and send and accept module and host computer (1.6) communicates by ARM core wireless, in host computer (1.6), utilize its powerful computing power to use group's algorithm to carry out Accurate Model to the control model of rotating machinery (1.1), and the periodically motion of the accurate imbalance correction adjusting gear of output calibration control signal (1.4), and then realize the transient equilibrium control effect of second layer network.
Embodiment tri-:
The present embodiment and embodiment bis-are basic identical, and special feature is as follows:
(1) ground floor network transient equilibrium control:
1) tach signal (2.3) that speed probe (1.3) generates triggers interruption (2.5) by shaping pulse (2.4) to the DSP core of double-core embedded type control module (1.5);
2) the DSP core of double-core embedded type control module (1.5) is triggering under the effect of interrupting (2.5), and Real-time Collection is arranged on vibration transducer (1.2) vibration signal (2.1) that produce and that process through A/D conversion (2.2) on rotating machinery (1.1);
3) the DSP core of double-core embedded type control module (1.5) is by the vibration signal data that collect through zero phase-shift IIR filtering (2.6) filtering interference signals, and not only filtering speed is fast, and there is no phase shift phenomenon;
4) the DSP core of double-core embedded type control module (1.5) is processed the result of step 3) through FFT conversion (2.7), then after amount of unbalance amplitude is calculated (2.8) and amount of unbalance phase calculation (2.9), calculates respectively amplitude and the phase place of amount of unbalance;
5) amplitude of the amount of unbalance that the DSP core of double-core embedded type control module (1.5) obtains step 4) and phase place be through too much queue filtering (2.10), sample incomplete vibration signal and eliminate the numerical fluctuations that Different sampling period brings of filtering;
6) after the filtering that the DSP core of double-core embedded type control module (1.5) obtains step 5), data are calculated output control signal (2.11) by factor of influence method;
7) uneven adjusting gear (1.4) receiving step 6) output control signal, carry out amount of unbalance adjustment (2.23), realize the transient equilibrium control effect of ground floor network;
(2) second layer network transient equilibrium control:
1) the DSP core of double-core embedded type control module (1.5) is issued the data that obtain after too much queue filtering (2.10) the ARM core of double-core embedded type control module (1.5) by the double-core communication (2.12) of double-core embedded type control module (1.5), then sends to host computer (1.6) by wireless transmission data (2.13);
2) host computer (1.6) is by wireless receiving signal (2.15), if host computer is found the data fluctuations receiving and is exceeded threshold value, or the model that now neither one is built up, the Renewal model (2.16) of satisfying the demand, then will the data that collect be carried out to modeling by group's algorithm modeling (2.17), if host computer is found the data fluctuations receiving and is not exceeded threshold value, and now there is a model of building up, the Renewal model (2.16) of not satisfying the demand, by the data input model (2.20) receiving;
3) step 2) a certain amount of Data support of middle group's algorithm modeling (2.17) needs, in the time not meeting modeling and complete (2.18), host computer (1.6) will continue to wait for new data (2.19), complete (2.18) otherwise meet modeling, the model of building up is given to input model (2.20);
4) step 2) in after data are through input models (2.20), model will be exported periodically correcting controlling signal (2.21), and sends to the ARM core of double-core embedded type control module (1.5) by wireless transmission signal (2.22);
5) the ARM core wireless of double-core embedded type control module (1.5) receives data (2.14), the control signal receiving is exported to uneven adjusting gear (1.4), carry out amount of unbalance adjustment (2.23), realize the transient equilibrium control effect of second layer network.
Claims (4)
1. a high precision on-line dynamic balancing detects control system, comprise rotating machinery (1.1), vibration transducer (1.2), speed probe (1.3), uneven adjusting gear (1.4), double-core embedded type control module (1.5), host computer (1.6), it is characterized in that: the input end of vibration transducer (1.2) and speed probe (1.3) is connected with rotating machinery (1.1), the output terminal of vibration transducer (1.2) and speed probe (1.3) is connected with double-core embedded type control module (1.5), uneven adjusting gear (1.4) connects respectively rotating machinery (1.1) and double-core embedded type control module (1.5), host computer (1.6) is connected with double-core embedded type control module (1.5) by wireless network, described double-core embedded type control module (1.5) includes DSP core and ARM core, be responsible for detecting in real time rotating machinery (1.1) vibration and the tach signal of vibration transducer (1.2) and speed probe (1.3) conversion, carrying out signal processing and transient equilibrium algorithm calculates, and send to host computer (1.6) to carry out the control model of rotating machinery (1.1) to carry out Accurate Model related data, produce periodic correcting controlling signal, the final motion of controlling uneven adjusting gear (1.4), realizes transient equilibrium and detects control.
2. high precision on-line dynamic balancing detects a control method, adopts a kind of high precision on-line dynamic balancing according to claim 1 to detect control system and controls, and it is characterized in that concrete operation step is as follows:
(1) ground floor network transient equilibrium control: the DSP core of double-core embedded type control module (1.5) Real-time Collection under the triggering of speed probe (1.3) is interrupted is arranged on vibration transducer (1.2) data on rotating machinery (1.1), the data that gather are through zero phase-shift iir filter filtering interference signals, then go out amplitude and the phase place of amount of unbalance by FFT transformation calculations, then by sample incomplete vibration signal and eliminate the numerical fluctuations that Different sampling period brings of many queues filtering technique filtering, finally calculate output control signal by factor of influence method, control the motion of uneven adjusting gear (1.4), and then realize the transient equilibrium control effect of ground floor network,
(2) second layer network transient equilibrium control: in ground floor network transient equilibrium control, in ground floor network, the filtered data of many queues are issued ARM core by the double-core communication of double-core embedded type control module (1.5), and send and accept module and host computer (1.6) communicates by ARM core wireless, in host computer (1.6), utilize its powerful computing power to use group's algorithm to carry out Accurate Model to the control model of rotating machinery (1.1), and the periodically motion of the accurate imbalance correction adjusting gear of output calibration control signal (1.4), and then realize the transient equilibrium control effect of second layer network.
3. a kind of high precision on-line dynamic balancing according to claim 2 detects control method, it is characterized in that the concrete operation step of described step (1) ground floor network transient equilibrium control is as follows:
1) tach signal (2.3) that speed probe (1.3) generates triggers interruption (2.5) by shaping pulse (2.4) to the DSP core of double-core embedded type control module (1.5);
2) the DSP core of double-core embedded type control module (1.5) is triggering under the effect of interrupting (2.5), and Real-time Collection is arranged on vibration transducer (1.2) vibration signal (2.1) that produce and that process through A/D conversion (2.2) on rotating machinery (1.1);
3) the DSP core of double-core embedded type control module (1.5) is by the vibration signal data that collect through zero phase-shift IIR filtering (2.6) filtering interference signals, and not only filtering speed is fast, and there is no phase shift phenomenon;
4) the DSP core of double-core embedded type control module (1.5) is processed the result of step 3) through FFT conversion (2.7), then after amount of unbalance amplitude is calculated (2.8) and amount of unbalance phase calculation (2.9), calculates respectively amplitude and the phase place of amount of unbalance;
5) amplitude of the amount of unbalance that the DSP core of double-core embedded type control module (1.5) obtains step 4) and phase place be through too much queue filtering (2.10), sample incomplete vibration signal and eliminate the numerical fluctuations that Different sampling period brings of filtering;
6) after the filtering that the DSP core of double-core embedded type control module (1.5) obtains step 5), data are calculated output control signal (2.11) by factor of influence method;
7) uneven adjusting gear (1.4) receiving step 6) output control signal, carry out amount of unbalance adjustment (2.23), realize the transient equilibrium control effect of ground floor network.
4. a kind of high precision on-line dynamic balancing according to claim 2 detects control method, it is characterized in that the concrete operation step of described step (2) second layer network transient equilibrium control is as follows:
1) the DSP core of double-core embedded type control module (1.5) is issued the data that obtain after too much queue filtering (2.10) the ARM core of double-core embedded type control module (1.5) by the double-core communication (2.12) of double-core embedded type control module (1.5), then sends to host computer (1.6) by wireless transmission data (2.13);
2) host computer (1.6) is by wireless receiving signal (2.15), if host computer is found the data fluctuations receiving and is exceeded threshold value, or the model that now neither one is built up, the Renewal model (2.16) of satisfying the demand, then will the data that collect be carried out to modeling by group's algorithm modeling (2.17), if host computer is found the data fluctuations receiving and is not exceeded threshold value, and now there is a model of building up, the Renewal model (2.16) of not satisfying the demand, by the data input model (2.20) receiving;
3) step 2) a certain amount of Data support of middle group's algorithm modeling (2.17) needs, in the time not meeting modeling and complete (2.18), host computer (1.6) will continue to wait for new data (2.19), complete (2.18) otherwise meet modeling, the model of building up is given to input model (2.20);
4) step 2) in after data are through input models (2.20), model will be exported periodically correcting controlling signal (2.21), and sends to the ARM core of double-core embedded type control module (1.5) by wireless transmission signal (2.22);
5) the ARM core wireless of double-core embedded type control module (1.5) receives data (2.14), the control signal receiving is exported to uneven adjusting gear (1.4), carry out amount of unbalance adjustment (2.23), realize the transient equilibrium control effect of second layer network.
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| CN108414147A (en) * | 2018-02-27 | 2018-08-17 | 西安科技大学 | A kind of unbalanced electro spindle online adaptive active balancing method of consideration air gap |
| CN109186860A (en) * | 2018-08-31 | 2019-01-11 | 大唐东北电力试验研究院有限公司 | A kind of power station air-introduced machine intelligence dynamic balancing instrument based on internet big data |
| CN111691963A (en) * | 2020-06-09 | 2020-09-22 | 安徽江淮汽车集团股份有限公司 | Method and device for detecting dynamic balance of automobile fan |
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