CN115237196A - Bidirectional electromechanical static pressure control device - Google Patents
Bidirectional electromechanical static pressure control device Download PDFInfo
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Abstract
The invention belongs to the technical field of bidirectional electromechanical static pressure control, and discloses a bidirectional electromechanical static pressure control device, which comprises: the device comprises a noise detection module, a vibration detection module, a main control module, a static pressure measurement module, a static pressure value adjusting module, a noise reduction module, a vibration reduction module and a display module; the main control module is connected with the noise detection module, the vibration detection module, the static pressure measurement module, the static pressure value adjustment module, the noise reduction module, the vibration reduction module and the display module. Extracting actual vibration data of the bidirectional electromechanical static pressure control device to be detected according to the characteristic image sequence through a vibration detection module; determining the stability of the bidirectional electromechanical static pressure control device to be tested according to the actual vibration data, and improving the accuracy of vibration data extraction; meanwhile, the static pressure value of the bidirectional electromechanical static pressure control device can be accurately adjusted through the static pressure value adjusting module, and noise or excessive vibration is prevented.
Description
Technical Field
The invention belongs to the technical field of bidirectional electromechanical static pressure control, and particularly relates to a bidirectional electromechanical static pressure control device.
Background
The actuator is a key part for implementing vibration active control, is an important link of an active control system, and is used for applying control force to a control object according to a determined control rule. With the development of active vibration control technology, the requirements for actuators are becoming higher and higher. In recent years, on the basis of conventional fluid actuators, gas actuators, and electric actuators, various intelligent actuators, such as piezoelectric ceramic actuators, piezoelectric thin film actuators, electrostrictive actuators, magnetostrictive actuators, shape memory alloy actuators, servo actuators, and electrorheological fluid actuators, have been developed. The presence of these actuators provides a prerequisite for achieving high precision active control of vibrations. When the existing actuator is used, the static pressure control device is required to control the existing actuator, however, the existing bidirectional electromechanical static pressure control device has low vibration detection efficiency and inaccurate detection result; meanwhile, the static pressure value cannot be accurately adjusted, resulting in excessive noise or vibration.
Through the above analysis, the problems and defects of the prior art are as follows:
(1) The existing bidirectional electromechanical static pressure control device has low vibration detection efficiency and inaccurate detection result.
(2) The static pressure value cannot be accurately adjusted, resulting in excessive noise or vibration.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a bidirectional electromechanical static pressure control device.
The invention is realized in this way, a bidirectional electromechanical static pressure control device includes:
the device comprises a noise detection module, a vibration detection module, a main control module, a static pressure measurement module, a static pressure value adjusting module, a noise reduction module, a vibration reduction module and a display module;
the noise detection module is connected with the main control module and used for detecting noise data of the bidirectional electromechanical static pressure control device through the sound sensor, the vibration sheet sound sensor is adopted, the vibration value is increased along with the increase of noise based on the vibration value of the metal vibration sheet, the vibration value is changed along with the increase of noise, the vibration sheet sound sensor is made of copper materials, and the noise data are calculated through the measured vibration value;
the vibration detection module is connected with the main control module and used for detecting vibration data of the bidirectional electromechanical static pressure control device, firstly, a vibration signal of an output quantity of the bidirectional electromechanical static pressure control device is fed back to an input end in a positive feedback mode and is compared with an error signal to form a vibration feedback signal, the vibration feedback signal is transmitted to the main control module, a server in the main control module analyzes the feedback signal, when the signal is in a set vibration range, the main control module does not send an instruction, once the signal exceeds the set vibration range, the main control module immediately sends a vibration reduction instruction, the vibration control server receives the instruction and converts the instruction into an electric signal to be transmitted to an electric chip of the bidirectional electromechanical static pressure control device, and the vibration control of the bidirectional electromechanical static pressure control device is achieved;
the main control module is connected with the noise detection module, the vibration detection module, the static pressure measurement module, the static pressure value adjustment module, the noise reduction module, the vibration reduction module and the display module, is used for controlling the normal work of each module and controlling the normal work of each module, acquires an external signal, outputs the external signal to an output channel after analysis and processing, and converts the external signal into a standard electric signal through a D/A converter for output when analog quantity is required to be output;
the static pressure measuring module is connected with the main control module and used for measuring a bidirectional electromechanical static pressure value, the bidirectional electromechanical static pressure value is measured by using the static pressure sensor, the larger the bidirectional electromechanical static pressure value is, the larger the stimulation to the static pressure sensor is, the relative quantity of charges generated in the static pressure sensor can be stimulated, and the charges are transmitted in a transmission line in the form of electric signals, converted into digital signals through the A/D converter and transmitted to the main control module;
the static pressure value adjusting module is connected with the main control module and used for adjusting the static pressure value of the bidirectional electromechanical machine, the static pressure value of the bidirectional electromechanical machine is controlled through the pressure adjusting machine, the static pressure value of the output quantity is fed back to the input end in a negative feedback mode and is compared with the error signal to form a static pressure value feedback signal, the static pressure value feedback signal is transmitted to the main control module, a server in the main control module analyzes the feedback signal, when the signal is in a set static pressure value range, the main control module does not send an instruction, once the signal exceeds the set static pressure value range, the controller immediately sends a pressure reduction instruction, the static pressure value adjusting module receives the instruction, the signal is converted into an electric signal and is transmitted to an electric chip of the bidirectional electromechanical machine, and the static pressure value control of the bidirectional electromechanical machine is achieved;
the noise reduction mechanism is connected with the main control module and used for transmitting electromagnetic waves for neutralizing noise according to the current noise level and reducing noise waves by neutralizing the electromagnetic waves and the noise waves;
the vibration damping module is connected with the main control module and used for damping vibration of the bidirectional electromechanical static pressure control device through the vibration damping mechanism, when vibration damping is needed, the main control module sends a vibration damping instruction to the vibration damping module, the vibration damping module analyzes the instruction, electrical signals in the instruction are extracted and transmitted to an electrical chip of the vibration damping mechanism, and the vibration damping mechanism is started to damp vibration;
the display module is connected with the main control module and used for displaying the noise detection result, the vibration detection result and the static pressure measurement result through the displayer, the main control module transmits information to the display module in a digital signal mode, and the display module transmits the digital signal to the display screen through the DVI interface for displaying.
Further, the detection method of the vibration detection module is as follows:
(1) Shooting an image of a bidirectional electromechanical static pressure control device to be tested, and carrying out enhancement processing on the shot image through an image enhancement program to obtain a first video and a second video of the bidirectional electromechanical static pressure control device to be tested, wherein the first video and the second video are different videos shot by the bidirectional electromechanical static pressure control device to be tested in the same time;
(2) Acquiring a first image corresponding to the first video and a second image corresponding to the second video; overlapping the first image and the second image, removing pixel points where the first image and the second image cannot be overlapped, obtaining a vibration video of a bidirectional electromechanical static pressure control device of the bidirectional electromechanical static pressure control device to be detected, and selecting a first RGB image according to the vibration video of the bidirectional electromechanical static pressure control device to be detected;
(3) Linearly converting the first RGB image from an RGB color space to a YIQ color space to obtain a first YIQ image; processing the Y-channel image in the first YIQ image through a video amplification algorithm to obtain a characteristic image sequence;
(4) Extracting actual vibration data of the bidirectional electromechanical static pressure control device to be detected according to the characteristic image sequence; and determining the stability of the bidirectional electromechanical static pressure control device to be tested according to the vibration part of the bidirectional electromechanical static pressure control device to be tested and the actual vibration data.
Further, the extracting the actual vibration data of the bidirectional electromechanical static pressure control device to be tested according to the characteristic image sequence comprises:
calculating the cross power spectrum of the characteristic image sequence according to a phase correlation formula; extracting vibration information of pixels in the characteristic image sequence according to the cross power spectrum; determining actual vibration data of the bidirectional electromechanical static pressure control device to be tested according to the vibration information; and determining the vibration part of the bidirectional electromechanical static pressure control device to be tested according to the actual vibration data.
Further, the processing the Y-channel image in the first YIQ image through a video amplification algorithm to obtain a characteristic image sequence includes:
performing Fourier transform on a Y-channel image in the first YIQ image;
carrying out image pyramid decomposition on the Y-channel image after Fourier transform;
carrying out normalization, space-time filtering and linear amplification processing on the Y-channel image subjected to image pyramid decomposition;
and synthesizing the processed Y-channel image with an I-channel image and a Q-channel image in the YIQ image, and forming a characteristic image sequence.
Further, the extracting vibration information of pixels in the feature image sequence according to the cross interaction power spectrum includes:
selecting an adaptive filter according to the peak position of the cross-power spectrum;
filtering the cross power spectrum according to the adaptive filter;
performing inverse Fourier transform on the filtered cross power spectrum;
and extracting vibration information of pixels in the characteristic image sequence according to the cross power spectrum after the inverse Fourier transform.
Further, the determining the stability of the bidirectional electromechanical static pressure control device to be tested according to the vibration part of the bidirectional electromechanical static pressure control device to be tested and the actual vibration data comprises:
acquiring N sections of vibration videos of a fastener of the bidirectional electromechanical static pressure control device or a joint of the bidirectional electromechanical static pressure control device to be detected;
counting the average vibration frequency, the average amplitude and the average vibration period of the N sections of vibration videos;
and comparing the average vibration frequency, the average amplitude and the average vibration period with the actual vibration data, and determining the stability of the bidirectional electromechanical static pressure control device to be tested according to the comparison result.
Further, the static pressure value adjusting module adjusts the method as follows:
1) Acquiring an actual static pressure value of a unit of the bidirectional electromechanical static pressure control device; obtaining change data according to the actual static pressure value and a preset static pressure value;
2) And adjusting the stress force of the bidirectional electromechanical static pressure control device according to the change data so as to enable the actual static pressure value of the unit of the bidirectional electromechanical static pressure control device to be equal to the preset static pressure value.
Further, the change data includes a static pressure change ratio; the static pressure self-adjusting control method comprises the following steps:
calculating the static pressure change proportion according to the actual static pressure value and the preset static pressure value;
and adjusting the stress of the bidirectional electromechanical static pressure control device according to the static pressure change proportion.
Further, the step of calculating the static pressure change ratio according to the actual static pressure value and the preset static pressure value includes:
the static pressure change ratio is calculated by the following formula:
ΔP＝(P0-P1)/P0；
wherein Δ P represents the static pressure change ratio, P0 represents the preset static pressure value, and P1 represents the actual static pressure value.
Further, the step of adjusting the stress of the bidirectional electromechanical static pressure control device according to the static pressure change proportion comprises the following steps:
and if the static pressure change proportion is larger than or equal to the preset static pressure change proportion, controlling and increasing the stress of the bidirectional electromechanical static pressure control device.
In combination with the technical solutions and the technical problems to be solved, please analyze the advantages and positive effects of the technical solutions to be protected in the present invention from the following aspects:
first, aiming at the technical problems existing in the prior art and the difficulty in solving the problems, the technical problems to be solved by the technical scheme of the present invention are closely combined with results, data and the like in the research and development process, and some creative technical effects are brought after the problems are solved. The specific description is as follows:
the method comprises the steps of obtaining a vibration video of a bidirectional electromechanical static pressure control device to be detected through a vibration detection module, and selecting a first RGB image according to the vibration video of the bidirectional electromechanical static pressure control device to be detected; linearly converting the first RGB image from an RGB color space to a YIQ color space to obtain a first YIQ image; processing the Y-channel image in the first YIQ image through a video amplification algorithm to obtain a characteristic image sequence; extracting actual vibration data of the bidirectional electromechanical static pressure control device to be detected according to the characteristic image sequence; determining the stability of the bidirectional electromechanical static pressure control device to be tested according to the actual vibration data, and improving the accuracy of vibration data extraction; meanwhile, the static pressure value of the bidirectional electromechanical static pressure control device can be accurately adjusted through the static pressure value adjusting module, and the noise or the vibration is prevented from being overlarge.
Secondly, considering the technical scheme as a whole or from the perspective of products, the technical effect and advantages of the technical scheme to be protected by the invention are specifically described as follows:
the method comprises the steps of obtaining a vibration video of a bidirectional electromechanical static pressure control device to be detected through a vibration detection module, and selecting a first RGB image according to the vibration video of the bidirectional electromechanical static pressure control device to be detected; linearly converting the first RGB image from an RGB color space to a YIQ color space to obtain a first YIQ image; processing the Y-channel image in the first YIQ image through a video amplification algorithm to obtain a characteristic image sequence; extracting actual vibration data of the bidirectional electromechanical static pressure control device to be detected according to the characteristic image sequence; determining the stability of the bidirectional electromechanical static pressure control device to be tested according to the actual vibration data, and improving the accuracy of vibration data extraction; meanwhile, the static pressure value of the bidirectional electromechanical static pressure control device can be accurately adjusted through the static pressure value adjusting module, and the noise or the vibration is prevented from being overlarge.
Drawings
Fig. 1 is a block diagram of a bidirectional electro-mechanical static pressure control device according to an embodiment of the present invention.
Fig. 2 is a flowchart of a vibration detection module detection method according to an embodiment of the present invention.
FIG. 3 is a flow chart of a static pressure value adjusting module adjusting method according to an embodiment of the invention.
In fig. 1: 1. a noise detection module; 2. a vibration detection module; 3. a main control module; 4. a static pressure measurement module; 5. a static pressure value adjusting module; 6. a noise reduction module; 7. a vibration reduction module; 8. and a display module.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
1. Illustrative embodiments are explained. This section is an illustrative example developed to explain the claims in order to enable those skilled in the art to fully understand how to implement the present invention.
As shown in fig. 1, a bidirectional electromechanical static pressure control apparatus according to an embodiment of the present invention includes:
the device comprises a noise detection module 1, a vibration detection module 2, a main control module 3, a static pressure measurement module 4, a static pressure value adjusting module 5, a noise reduction module 6, a vibration reduction module 7 and a display module 8.
The noise detection module 1 is connected with the main control module 3 and used for detecting noise data of the bidirectional electromechanical static pressure control device through a sound sensor, a vibrating piece sound sensor is adopted, the vibration value is changed along with the rise of noise based on the increase of the vibration value of a metal vibrating piece along with the increase of the noise, the vibrating piece sound sensor is made of a copper material, and the noise data is calculated through the measured vibration value;
the vibration detection module 2 is connected with the main control module 3 and used for detecting vibration data of the bidirectional electromechanical static pressure control device, firstly, a vibration signal of an output quantity of the bidirectional electromechanical static pressure control device is fed back to an input end in a positive feedback mode and is compared with an error signal to form a vibration feedback signal, the vibration feedback signal is transmitted to the main control module, a server in the main control module analyzes the feedback signal, when the signal is in a set vibration range, the main control module does not issue an instruction, once the signal exceeds the set vibration range, the main control module immediately issues a vibration reduction instruction, the vibration control server receives the instruction, the signal is converted into an electric signal and is transmitted to an electric chip of the bidirectional electromechanical static pressure control device, and vibration control of the bidirectional electromechanical static pressure control device is achieved;
the main control module 3 is connected with the noise detection module 1, the vibration detection module 2, the static pressure measurement module 4, the static pressure value adjustment module 5, the noise reduction module 6, the vibration reduction module 7 and the display module 8, is used for controlling the normal work of each module and controlling the normal work of each module, acquires external signals, outputs the external signals to an output channel after analysis and processing, and converts the external signals into standard electric signals through a D/A converter for output when analog quantity is required to be output;
the static pressure measuring module 4 is connected with the main control module 3 and used for measuring a bidirectional electromechanical static pressure value, the static pressure sensor is used for measuring the bidirectional electromechanical static pressure value, the larger the bidirectional electromechanical static pressure value is, the larger the stimulation to the static pressure sensor is, the charges with relative quantity can be generated in the static pressure sensor in a stimulation manner, and the charges are transmitted in a transmission line in an electric signal manner, converted into digital signals through the A/D converter and transmitted to the main control module;
the static pressure value adjusting module 5 is connected with the main control module 3 and used for adjusting the static pressure value of the bidirectional electromechanical machine, the static pressure value of the bidirectional electromechanical machine is controlled through the pressure adjusting machine, firstly, the static pressure value of the output quantity is fed back to the input end in a negative feedback mode and is compared with the error signal to form a static pressure value feedback signal, the static pressure value feedback signal is transmitted to the main control module, a server in the main control module analyzes the feedback signal, when the signal is in a set static pressure value range, the main control module does not send an instruction, once the signal exceeds the set static pressure value range, the controller immediately sends a pressure reduction instruction, the static pressure value adjusting module receives the instruction, the signal is converted into an electric signal and is transmitted to an electric chip of the bidirectional electromechanical machine, and the control on the static pressure value of the bidirectional electromechanical machine is achieved;
the noise reduction module 6 is connected with the main control module 3 and is used for reducing noise of the bidirectional electromechanical static pressure control device through the noise reduction mechanism, when the noise reduction is required, the main control module sends a command for requesting the noise reduction to the noise reduction module, and the noise reduction mechanism emits electromagnetic waves for neutralizing noise according to the current noise level, and the electromagnetic waves are neutralized with the noise waves to reduce the noise waves;
the vibration damping module 7 is connected with the main control module 3 and used for damping vibration of the bidirectional electromechanical static pressure control device through the vibration damping mechanism, when vibration damping is needed, the main control module sends a vibration damping instruction to the vibration damping module, the vibration damping module analyzes the instruction, electrical signals in the instruction are extracted and transmitted to an electrical chip of the vibration damping mechanism, and the vibration damping mechanism is started to damp vibration;
and the display module 8 is connected with the main control module 3 and used for displaying a noise detection result, a vibration detection result and a static pressure measurement result through a display, the main control module transmits information to the display module in a digital signal form, and the display module transmits the digital signal to a display screen through a DVI (digital visual interface) for displaying.
As shown in fig. 2, the detection method of the vibration detection module 2 provided by the present invention is as follows:
s101, shooting an image of a to-be-detected bidirectional electromechanical static pressure control device, performing enhancement processing on the shot image through an image enhancement program, and obtaining a first video and a second video of the to-be-detected bidirectional electromechanical static pressure control device, wherein the first video and the second video are different videos shot by the to-be-detected bidirectional electromechanical static pressure control device in the same time;
s102, acquiring a first image corresponding to the first video and a second image corresponding to the second video; overlapping the first image and the second image, removing pixel points where the first image and the second image cannot be overlapped, obtaining a vibration video of a bidirectional electromechanical static pressure control device of the bidirectional electromechanical static pressure control device to be detected, and selecting a first RGB image according to the vibration video of the bidirectional electromechanical static pressure control device to be detected;
s103, linearly converting the first RGB image from an RGB color space to a YIQ color space to obtain a first YIQ image; processing the Y-channel image in the first YIQ image through a video amplification algorithm to obtain a characteristic image sequence;
s104, extracting actual vibration data of the bidirectional electromechanical static pressure control device to be tested according to the characteristic image sequence; and determining the stability of the bidirectional electromechanical static pressure control device to be tested according to the vibration part of the bidirectional electromechanical static pressure control device to be tested and the actual vibration data.
The invention provides a method for extracting actual vibration data of a bidirectional electromechanical static pressure control device to be tested according to a characteristic image sequence, which comprises the following steps:
calculating the cross power spectrum of the characteristic image sequence according to a phase correlation formula; extracting vibration information of pixels in the characteristic image sequence according to the cross power spectrum; determining actual vibration data of the bidirectional electromechanical static pressure control device to be tested according to the vibration information; and determining the vibration part of the bidirectional electromechanical static pressure control device to be tested according to the actual vibration data.
The invention provides a method for processing a Y-channel image in a first YIQ image through a video amplification algorithm to obtain a characteristic image sequence, which comprises the following steps:
performing Fourier transform on a Y-channel image in the first YIQ image;
carrying out image pyramid decomposition on the Y-channel image after Fourier transform;
carrying out normalization, space-time filtering and linear amplification processing on the Y-channel image subjected to image pyramid decomposition;
and synthesizing the processed Y-channel image with an I-channel image and a Q-channel image in the YIQ image, and forming a characteristic image sequence.
The invention provides a method for extracting vibration information of pixels in a characteristic image sequence according to a cross interaction power spectrum, which comprises the following steps:
selecting an adaptive filter according to the peak position of the cross-power spectrum;
filtering the cross power spectrum according to the adaptive filter;
performing inverse Fourier transform on the filtered cross power spectrum;
and extracting vibration information of pixels in the characteristic image sequence according to the cross power spectrum after the inverse Fourier transform.
The invention provides a method for determining the stability of a bidirectional electromechanical static pressure control device to be tested according to the vibration part of the bidirectional electromechanical static pressure control device to be tested and the actual vibration data, which comprises the following steps:
acquiring N sections of vibration videos of a fastener of the bidirectional electromechanical static pressure control device or a joint of the bidirectional electromechanical static pressure control device to be detected;
counting the average vibration frequency, the average amplitude and the average vibration period of the N sections of vibration videos;
and comparing the average vibration frequency, the average amplitude and the average vibration period with the actual vibration data, and determining the stability of the bidirectional electromechanical static pressure control device to be tested according to the comparison result.
As shown in fig. 3, the static pressure value adjusting module 5 provided by the present invention adjusts the method as follows:
s201, acquiring an actual static pressure value of a unit of the bidirectional electromechanical static pressure control device; obtaining change data according to the actual static pressure value and a preset static pressure value;
s202, adjusting the stress of the bidirectional electromechanical static pressure control device according to the change data so as to enable the actual static pressure value of the unit of the bidirectional electromechanical static pressure control device to be equal to the preset static pressure value.
The change data provided by the invention comprises a static pressure change proportion; the static pressure self-adjusting control method comprises the following steps:
calculating the static pressure change proportion according to the actual static pressure value and the preset static pressure value;
and adjusting the stress of the bidirectional electromechanical static pressure control device according to the static pressure change proportion.
The step of calculating the static pressure change ratio according to the actual static pressure value and the preset static pressure value comprises the following steps:
the static pressure change ratio is calculated by the following formula:
ΔP＝(P0-P1)/P0；
wherein Δ P represents the static pressure change ratio, P0 represents the preset static pressure value, and P1 represents the actual static pressure value.
The step of adjusting the stress of the bidirectional electromechanical static pressure control device according to the static pressure change proportion comprises the following steps:
and if the static pressure change proportion is larger than or equal to the preset static pressure change proportion, controlling and increasing the stress of the bidirectional electromechanical static pressure control device.
2. Application examples. In order to prove the creativity and the technical value of the technical scheme of the invention, the part is the application example of the technical scheme of the claims on specific products or related technologies.
When the bidirectional electromechanical static pressure control device works, firstly, the noise detection module 1 detects the noise data of the bidirectional electromechanical static pressure control device by using the sound sensor; detecting vibration data of the bidirectional electromechanical static pressure control device through a vibration detection module 2; secondly, the main control module 3 measures a bidirectional electromechanical static pressure value through the static pressure measuring module 4; the static pressure value adjusting module 5 is used for adjusting the static pressure value of the bidirectional electromechanical machine; then, the noise reduction module 6 is used for reducing noise of the bidirectional electromechanical static pressure control device by using a noise reduction mechanism; the vibration damping module 7 is used for damping vibration of the bidirectional electromechanical static pressure control device by using a vibration damping mechanism; and finally, displaying the noise detection result, the vibration detection result and the static pressure measurement result by using a display through a display module 8.
It should be noted that embodiments of the present invention can be realized in hardware, software, or a combination of software and hardware. The hardware portions may be implemented using dedicated logic; the software portions may be stored in a memory and executed by a suitable instruction execution system, such as a microprocessor or specially designed hardware. It will be appreciated by those skilled in the art that the apparatus and methods described above may be implemented using computer executable instructions and/or embodied in processor control code, for example such code provided on a carrier medium such as a diskette, CD-or DVD-ROM, a programmable memory such as read-only memory (firmware) or a data carrier such as an optical or electronic signal carrier. The apparatus and its modules of the present invention may be implemented by hardware circuits such as very large scale integrated circuits or gate arrays, semiconductors such as logic chips, transistors, or programmable hardware devices such as field programmable gate arrays, programmable logic devices, etc., or by software executed by various types of processors, or by a combination of hardware circuits and software, e.g., firmware.
3. Evidence of the relevant effects of the examples. The embodiment of the invention achieves some positive effects in the process of research and development or use, and has great advantages compared with the prior art, and the following contents are described by combining data, diagrams and the like in the test process.
The method comprises the steps of obtaining a vibration video of a bidirectional electromechanical static pressure control device to be detected through a vibration detection module, and selecting a first RGB image according to the vibration video of the bidirectional electromechanical static pressure control device to be detected; linearly converting the first RGB image from an RGB color space to a YIQ color space to obtain a first YIQ image; processing the Y-channel image in the first YIQ image through a video amplification algorithm to obtain a characteristic image sequence; extracting actual vibration data of the bidirectional electromechanical static pressure control device to be detected according to the characteristic image sequence; determining the stability of the bidirectional electromechanical static pressure control device to be tested according to the actual vibration data, and improving the accuracy of vibration data extraction; meanwhile, the static pressure value of the bidirectional electromechanical static pressure control device can be accurately adjusted through the static pressure value adjusting module, and noise or excessive vibration is prevented.
The above description is only for the purpose of illustrating the present invention and the appended claims are not to be construed as limiting the scope of the invention, which is intended to cover all modifications, equivalents and improvements that are within the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A bi-directional electro-mechanical hydrostatic control device, comprising:
the device comprises a noise detection module, a vibration detection module, a main control module, a static pressure measurement module, a static pressure value adjusting module, a noise reduction module, a vibration reduction module and a display module;
the noise detection module is connected with the main control module and used for detecting noise data of the bidirectional electromechanical static pressure control device through the sound sensor, the vibration sheet sound sensor is adopted, the vibration value is increased along with the increase of noise based on the vibration value of the metal vibration sheet, the vibration value is changed along with the increase of noise, the vibration sheet sound sensor is made of copper materials, and the noise data are calculated through the measured vibration value;
the vibration detection module is connected with the main control module and used for detecting vibration data of the bidirectional electromechanical static pressure control device, firstly, a vibration signal of an output quantity of the bidirectional electromechanical static pressure control device is fed back to an input end in a positive feedback mode and is compared with an error signal to form a vibration feedback signal, the vibration feedback signal is transmitted to the main control module, a server in the main control module analyzes the feedback signal, when the signal is in a set vibration range, the main control module does not send an instruction, once the signal exceeds the set vibration range, the main control module immediately sends a vibration reduction instruction, the vibration control server receives the instruction and converts the instruction into an electric signal to be transmitted to an electric chip of the bidirectional electromechanical static pressure control device, and the vibration control of the bidirectional electromechanical static pressure control device is achieved;
the main control module is connected with the noise detection module, the vibration detection module, the static pressure measurement module, the static pressure value adjustment module, the noise reduction module, the vibration reduction module and the display module, is used for controlling the normal work of each module and controlling the normal work of each module, acquires an external signal, outputs the external signal to an output channel after analysis and processing, and converts the external signal into a standard electric signal through a D/A converter for output when analog quantity is required to be output;
the static pressure measuring module is connected with the main control module and used for measuring a bidirectional electromechanical static pressure value, the bidirectional electromechanical static pressure value is measured by using the static pressure sensor, the larger the bidirectional electromechanical static pressure value is, the larger the stimulation to the static pressure sensor is, the charges with relative quantity can be generated in the static pressure sensor in a stimulation manner, and the charges are transmitted in a transmission line in an electric signal manner, converted into digital signals through the A/D converter and transmitted to the main control module;
the static pressure value adjusting module is connected with the main control module and used for adjusting the static pressure value of the bidirectional electromechanical machine, the static pressure value of the bidirectional electromechanical machine is controlled through the pressure adjusting machine, the static pressure value of the output quantity is fed back to the input end in a negative feedback mode and is compared with the error signal to form a static pressure value feedback signal, the static pressure value feedback signal is transmitted to the main control module, a server in the main control module analyzes the feedback signal, when the signal is in a set static pressure value range, the main control module does not send an instruction, once the signal exceeds the set static pressure value range, the controller immediately sends a pressure reduction instruction, the static pressure value adjusting module receives the instruction, the signal is converted into an electric signal and is transmitted to an electric chip of the bidirectional electromechanical machine, and the static pressure value control of the bidirectional electromechanical machine is achieved;
the noise reduction mechanism is connected with the main control module and used for transmitting electromagnetic waves for neutralizing noise according to the current noise level and reducing the noise waves;
the vibration damping module is connected with the main control module and used for damping vibration of the bidirectional electromechanical static pressure control device through the vibration damping mechanism, when vibration damping is needed, the main control module sends a vibration damping instruction to the vibration damping module, the vibration damping module analyzes the instruction, electrical signals in the instruction are extracted and transmitted to an electrical chip of the vibration damping mechanism, and the vibration damping mechanism is started to damp vibration;
the display module is connected with the main control module and used for displaying the noise detection result, the vibration detection result and the static pressure measurement result through the displayer, the main control module transmits information to the display module in a digital signal mode, and the display module transmits the digital signal to the display screen through the DVI interface for displaying.
2. The bi-directional electro-mechanical static pressure control device of claim 1, wherein the vibration detection module detects the vibration by:
(1) Shooting an image of a bidirectional electromechanical static pressure control device to be tested, and carrying out enhancement processing on the shot image through an image enhancement program to obtain a first video and a second video of the bidirectional electromechanical static pressure control device to be tested, wherein the first video and the second video are different videos shot by the bidirectional electromechanical static pressure control device to be tested in the same time;
(2) Acquiring a first image corresponding to the first video and a second image corresponding to the second video; overlapping the first image and the second image, removing pixel points where the first image and the second image cannot be overlapped, obtaining a vibration video of a bidirectional electromechanical static pressure control device of the bidirectional electromechanical static pressure control device to be detected, and selecting a first RGB image according to the vibration video of the bidirectional electromechanical static pressure control device to be detected;
(3) Linearly converting the first RGB image from an RGB color space to a YIQ color space to obtain a first YIQ image; processing the Y-channel image in the first YIQ image through a video amplification algorithm to obtain a characteristic image sequence;
(4) Extracting actual vibration data of the bidirectional electromechanical static pressure control device to be detected according to the characteristic image sequence; and determining the stability of the bidirectional electromechanical static pressure control device to be tested according to the vibration part of the bidirectional electromechanical static pressure control device to be tested and the actual vibration data.
3. The bi-directional electro-mechanical hydrostatic control device of claim 2, wherein the extracting actual vibration data of the bi-directional electro-mechanical hydrostatic control device under test from the sequence of characteristic images comprises:
calculating cross power spectra of the characteristic image sequence according to a phase correlation formula; extracting vibration information of pixels in the characteristic image sequence according to the cross power spectrum; determining actual vibration data of the bidirectional electromechanical static pressure control device to be tested according to the vibration information; and determining the vibration part of the bidirectional electromechanical static pressure control device to be tested according to the actual vibration data.
4. The bi-directional electro-mechanical static pressure control device of claim 2, wherein said processing the Y-channel image in the first YIQ image by a video amplification algorithm to obtain a sequence of characteristic images comprises:
performing Fourier transform on a Y-channel image in the first YIQ image;
performing image pyramid decomposition on the Y-channel image subjected to Fourier transform;
carrying out normalization, space-time filtering and linear amplification processing on the Y-channel image subjected to image pyramid decomposition;
and synthesizing the processed Y-channel image with an I-channel image and a Q-channel image in the YIQ image, and forming a characteristic image sequence.
5. The bi-directional electro-mechanical static pressure control device of claim 2, wherein said extracting vibration information of pixels in said sequence of feature images from said cross-interaction power spectrum comprises:
selecting an adaptive filter according to the peak position of the cross-power spectrum;
filtering the cross power spectrum according to the adaptive filter;
performing inverse Fourier transform on the filtered cross power spectrum;
and extracting vibration information of pixels in the characteristic image sequence according to the cross power spectrum after the inverse Fourier transform.
6. The bi-directional electromechanical static pressure control device of claim 2, wherein the determining the stability of the bi-directional electromechanical static pressure control device under test based on the vibration location of the bi-directional electromechanical static pressure control device under test and the actual vibration data comprises:
acquiring N sections of vibration videos of a fastener of the bidirectional electromechanical static pressure control device or a joint of the bidirectional electromechanical static pressure control device to be detected;
counting the average vibration frequency, the average amplitude and the average vibration period of the N sections of vibration videos;
and comparing the average vibration frequency, the average amplitude and the average vibration period with the actual vibration data, and determining the stability of the bidirectional electromechanical static pressure control device to be tested according to the comparison result.
7. The bi-directional electro-mechanical hydrostatic control of claim 1, wherein the hydrostatic value adjustment module adjusts as follows:
1) Acquiring an actual static pressure value of a unit of the bidirectional electromechanical static pressure control device; obtaining change data according to the actual static pressure value and a preset static pressure value;
2) And adjusting the stress force of the bidirectional electromechanical static pressure control device according to the change data so as to enable the actual static pressure value of the unit of the bidirectional electromechanical static pressure control device to be equal to the preset static pressure value.
8. The bi-directional electro-mechanical static pressure control device of claim 7, wherein said change data comprises a proportion of static pressure change; the static pressure self-adjusting control method comprises the following steps:
calculating the static pressure change proportion according to the actual static pressure value and the preset static pressure value;
and adjusting the stress of the bidirectional electromechanical static pressure control device according to the static pressure change proportion.
9. The bi-directional electro-mechanical static pressure control device of claim 8, wherein said step of calculating said static pressure change ratio based on said actual static pressure value and said preset static pressure value comprises:
the static pressure change ratio is calculated by the following formula:
ΔP＝(P0-P1)/P0；
wherein Δ P represents the static pressure change ratio, P0 represents the preset static pressure value, and P1 represents the actual static pressure value.
10. The bi-directional electro-mechanical hydrostatic control of claim 8, wherein said step of adjusting the force applied to said bi-directional electro-mechanical hydrostatic control based on said ratio of said hydrostatic pressure change comprises:
and if the static pressure change proportion is larger than or equal to the preset static pressure change proportion, controlling to increase the stress of the bidirectional electromechanical static pressure control device.
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