CN109084882B - Rotary disc vibration detection control device and method - Google Patents
Rotary disc vibration detection control device and method Download PDFInfo
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- CN109084882B CN109084882B CN201811158462.0A CN201811158462A CN109084882B CN 109084882 B CN109084882 B CN 109084882B CN 201811158462 A CN201811158462 A CN 201811158462A CN 109084882 B CN109084882 B CN 109084882B
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- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
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Abstract
The invention discloses a rotary disc vibration detection control device and a method, wherein the device comprises a disc, a rotary driving mechanism, a vibration excitation mechanism, a vibration control mechanism, a vibration detection mechanism and a control assembly, wherein the disc is vertical to a horizontal plane, and the rotary driving mechanism is connected with the disc and is used for driving the disc to rotate; the vibration excitation mechanism is used for exciting the disc to generate transverse vibration; the vibration control mechanism is used for inhibiting the transverse vibration of the disc; the vibration detection mechanism comprises a laser displacement sensor and a wireless acceleration sensor, the measuring head of the laser displacement sensor is opposite to the surface of the disc, and the wireless acceleration sensor is arranged on the surface of the disc and is connected with the wireless gateway; the control component is respectively connected with the vibration control mechanism, the laser displacement sensor and the wireless gateway. The invention can realize the rapid and stable detection and active control of the transverse vibration of the rotating disc.
Description
Technical Field
The invention relates to a vibration detection control device, in particular to a rotary disc vibration detection control device and method, and belongs to the field of vibration detection and control of flexible rotary structures.
Background
With the wide application of high-speed rotary machines in the industrial field, faults caused by the transverse vibration of the rotary machine itself are endlessly formed. The rotating disc belongs to a basic rotating mechanical structure in industrial application, such as a turbine, a circular saw, a gyroscope, a computer storage device and the like, and the transverse vibration caused by the eccentricity of an installation shaft or external disturbance can influence or limit the service performance of the machine and even destroy the structure along with the thickness reduction and the rotation speed increase of the rotating disc. Thus, the requirements for vibration control and stability of rotating disc-like structures are becoming more and more stringent, requiring the addition of actuators to exert active control. However, for rotating structures, the installation of wired sensors or actuators is a difficult problem, and the implementation of non-contact measurement and actuation are key links to vibration control thereof.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides a rotary disc vibration detection control device which can realize rapid and stable detection and active control of transverse vibration of a rotary disc.
Another object of the present invention is to provide a method for detecting and controlling vibration of a rotating disk.
The aim of the invention can be achieved by adopting the following technical scheme:
the rotary disc vibration detection control device comprises a disc, a rotary driving mechanism, a vibration excitation mechanism, a vibration control mechanism, a vibration detection mechanism and a control assembly, wherein the disc is perpendicular to a horizontal plane, and the rotary driving mechanism is connected with the disc and is used for driving the disc to rotate; the vibration excitation mechanism is used for exciting the disc to generate transverse vibration; the vibration control mechanism is used for inhibiting the transverse vibration of the disc; the vibration detection mechanism comprises a laser displacement sensor and a wireless acceleration sensor, the measuring head of the laser displacement sensor is opposite to the surface of the disc, and the wireless acceleration sensor is arranged on the surface of the disc and is connected with the wireless gateway; the control component is respectively connected with the vibration control mechanism, the laser displacement sensor and the wireless gateway.
Further, the rotary driving mechanism comprises a servo motor, a speed reducer, a coupler, a flange piece and a motor control box, wherein the servo motor is provided with a photoelectric encoder, an output shaft of the servo motor is connected with an input shaft of the speed reducer, an output shaft of the speed reducer is connected with a connecting shaft of the flange piece through the coupler, the flange piece is fixedly connected with the disc, and the motor control box is connected with the servo motor.
Further, the device also comprises a supporting platform, and the servo motor is fixed on the supporting platform.
Further, the vibration excitation mechanism comprises an eddy current actuator, a first conversion circuit and a signal generator, wherein two ends of an iron core of the eddy current actuator are symmetrical with respect to a disc, and the signal generator is connected with the eddy current actuator through the first conversion circuit.
Further, the vibration control mechanism comprises an eddy current damper and a second conversion circuit, two ends of an iron core of the eddy current damper are symmetrical with respect to the disc, and the control assembly is connected with the eddy current damper through the second conversion circuit.
Further, the control component comprises an industrial personal computer, an A/D acquisition card, a conditioning circuit and a D/A conversion card;
the industrial personal computer is connected with the conditioning circuit through the A/D acquisition card, the wireless gateway through the USB interface and the vibration control mechanism through the D/A conversion card, and the conditioning circuit is connected with the laser displacement sensor.
Further, the device also comprises a working platform, and the measuring head of the laser displacement sensor is arranged on the working platform.
Further, the measuring head of the laser displacement sensor is fixed on an end face connecting plate, and the end face connecting plate is in sliding connection with the vertical supporting rod of the working platform.
Further, the wireless acceleration sensor is adsorbed on the surface of the disc, and a sensing module, a power module, an acquisition processing module and a wireless transceiver module are arranged in the wireless acceleration sensor.
The other object of the invention can be achieved by adopting the following technical scheme:
a rotating disk vibration detection control method, the method comprising:
in the rotary driving mechanism, a motor control box controls a servo motor to drive a disc to stably rotate;
in the vibration excitation mechanism, a signal generator generates an excitation signal, the excitation signal is converted into a current signal in a coil of an eddy current actuator through a first conversion circuit, the magnetic field in the area near the surface of the disc is changed, and eddy current generated in the disc acts on the magnetic field to generate electromagnetic excitation force so as to excite the transverse vibration of the rotating disc;
the laser displacement sensor detects vibration signals, filters and amplifies the vibration signals through the conditioning circuit, and then collects the vibration signals through the A/D collection card and transmits the vibration signals to the industrial personal computer;
the wireless acceleration sensor detects vibration information of the disc at the adsorption position, and transmits the vibration information to the wireless gateway through a BeeNet network protocol, and the wireless gateway transmits the vibration information to the industrial personal computer;
after comparing and weighting analysis is carried out on the detection signals, the industrial personal computer runs a control algorithm, outputs corresponding control quantity, converts the control quantity into analog quantity through a D/A conversion card, changes coil current of the electric vortex damper through a second conversion circuit, and generates damping force to restrain vibration of the rotary disc.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention sets the measuring head of the laser displacement sensor opposite to the surface of the disc, and the wireless acceleration sensor on the surface of the disc, adopts the laser displacement sensor to carry out non-contact measurement, combines the wireless sensor to contact and measure long-distance wireless transmission, combines a plurality of detection modes avoiding winding, mutually verifies and improves the reliability, the multipoint detection and the precision.
2. According to the invention, after the rotary driving mechanism drives the disc to rotate, the electric vortex actuator can be adopted to excite the rotary disc to generate transverse vibration, the electric vortex damper can be adopted to inhibit the transverse vibration of the rotary disc, the force is applied in a non-contact mode, the winding problem is avoided, the mechanical friction is avoided, the driving force is large, and the active control on the transverse vibration of the rotary disc is realized.
3. The invention adopts the servo motor and the speed reducer to drive rotation, the encoder and the motor control box realize closed-loop control of rotary motion, stable rotating speed is provided, and control performance is optimized; meanwhile, the influence of the change of the rotating speed on the control effect can be studied by changing the reduction ratio of the speed reducer.
Drawings
Fig. 1 is a schematic diagram showing the overall structure of a rotary disk vibration detection control apparatus according to embodiment 1 of the present invention.
Fig. 2 is a left side view of a rotary disk vibration detection control apparatus according to embodiment 1 of the present invention.
Fig. 3 is a plan view of a rotary disk vibration detection control apparatus according to embodiment 1 of the present invention.
Fig. 4 is a schematic diagram of the connection of the disc and the rotary driving mechanism according to embodiment 1 of the present invention.
Fig. 5 is a schematic diagram of the measuring points, the actuating points and the damping points of the rotary disc vibration detection control device according to embodiment 1 of the present invention.
The device comprises a 1-disc, a 2-servo motor, a 3-speed reducer, a 4-coupler, a 5-flange piece, a 6-motor control box, a 7-bearing, an 8-photoelectric encoder, a 9-supporting platform, a 901-first vertical supporting rod, a 902-transverse supporting rod, a 903-first layer board, a 904-second layer board, a 10-first base, a 11-second base, a 12-eddy current actuator, a 13-first conversion circuit, a 14-signal generator, a 15-eddy current damper, a 16-second conversion circuit, a 17-third base, a 18-fourth base, a 19-laser displacement sensor, a 20-wireless acceleration sensor, a 21-working platform, a 2101-second vertical supporting rod, a 2102-third layer board, a 2103-fourth layer board, a 22-end face connecting board, a 23-wireless gateway, a 24-working point, a 25-damping point, a 26-first laser detection point, a 27-second laser detection point, a 28-third acceleration detection point, a 29-fourth laser detection point, a 30-first detection node, a 31-second detection card, a 32-second detection card, a 33-A/D and a 35-D conversion card.
Detailed Description
The present invention will be described in further detail with reference to examples and drawings, but embodiments of the present invention are not limited thereto.
Example 1:
non-contact vibration detection typically employs a laser displacement sensor, a wireless acceleration sensor, a vision sensor, or the like. The laser displacement sensor realizes vibration quantity detection by receiving the laser time change reflected by the surface of the measured object, and has fast response and high measurement reliability; the wireless acceleration sensor is characterized in that a sensing node is arranged on the surface of a detected object, data is packaged and sent to a wireless gateway through an internal wireless transceiver module according to a network protocol after vibration information is detected, and the wireless gateway transmits the vibration data to a computer through a USB interface, so that the power consumption is low, digital signal transmission is adopted, the transmission rate is high, and circuit noise interference is avoided; the visual sensor adopts two industrial cameras to collect images and processes to obtain three-dimensional coordinate changes of the mark points on the rotating disc so as to detect vibration, the information quantity is large, the precision is high, but the processing time is long, and the subsequent real-time control is difficult. Therefore, the present embodiment realizes noncontact vibration detection using a laser displacement sensor and a wireless acceleration sensor.
Further, conventional actuators capable of performing vibration control by damping a rotary structure mainly include: extruding an oil film damper, a shape memory alloy actuator and an eddy current actuator. The extrusion oil film damper can well inhibit the transverse vibration of the rotating disc caused by the eccentric installation of the bearing, but when the design is improper, the nonlinear characteristic of the oil film counter force is greatly increased, so that the control effect is poor, and the reliability is low. The shape memory alloy can control the expansion and contraction to form damping force through temperature change, has simple structure and light weight, is greatly influenced by external temperature change, and has poor stability; the eddy current actuator performs vibration control on the rotating disc by means of electromagnetic force, and has the advantages of non-contact, no mechanical friction and abrasion, no need of lubrication and controllable damping. Thus, the present embodiment employs an eddy current actuator to control the rotating disk.
As shown in fig. 1 to 3, the present embodiment provides a rotary disk vibration detection control apparatus including a disk 1, a rotary drive mechanism, a vibration excitation mechanism, a vibration control mechanism, a vibration detection mechanism, and a control unit, the disk 1 being perpendicular to a horizontal plane, broken lines in fig. 1 indicating a connection relationship between respective devices, directional arrows indicating a transmission direction of a detection signal flow, and broken lines in fig. 2 and 3 indicating a measuring head direction of a laser displacement sensor.
As shown in fig. 1 to 4, the rotary driving mechanism comprises a servo motor 2, a speed reducer 3, a coupler 4, a flange member 5 and a motor control box 6, wherein an output shaft of the servo motor 2 is connected with an input shaft of the speed reducer 3, an output shaft of the speed reducer 3 is connected with a connecting shaft of the flange member 5 through the coupler 4, the flange member 5 clamps a disc through an end cover and is fixedly connected with the disc through a bolt, and the motor control box 6 is connected with the servo motor 2; in order to make the rotary drive mechanism more stable, the rotary drive mechanism further comprises a bearing 7, and the output shaft of the speed reducer 3 is supported by the bearing 7; in addition, the servo motor 2 is provided with a photoelectric encoder 8, and the rotating speed of the servo motor 2 can be read and fed back to the motor control box 6 to form position closed loop or speed closed loop control.
In the driving process, the power of an output shaft of the servo motor 2 is reduced by a speed reducer 3 at a certain reduction ratio, and then is transmitted to a connecting shaft of a flange piece 5 through a coupler 4 to drive a clamped disc 1 to rotate, a bearing 7 provides a supporting function, a photoelectric encoder 8 measures the rotating speed of the servo motor 2 and feeds back the rotating speed to a motor control box 6, and the motor control box 6 adjusts the output voltage to form closed-loop control.
Preferably, in order to better support the rotation driving mechanism and the disc 1, the rotation disc vibration detection control device of the present embodiment further includes a support platform 9, the support platform 9 includes six first vertical support rods 901, eight lateral support rods 902, and two plates, the two plates are a first plate 903 and a second plate 904 from top to bottom, two of the six first vertical support rods 901 are long rods, four of the six first vertical support rods 901 are short rods, the two long rods and two of the two short rods are connected to the first plate 903 by four of the four lateral support rods 902, respectively, and the two short rods are fixed to the second plate 904, the second plate 904 is longer than the first plate 903, and the disc 1 is located right above a portion of the second plate 904 longer than the first plate 903, and the two long rods and the other two short rods are connected to the second plate 904 by the other four lateral support rods 902, respectively; the servo motor 2 is fixed on the upper surface of the first layer plate 903, specifically, the servo motor 2 is installed on the first base 10, the first base 10 is fixed on the upper surface of the first layer plate 903 through bolts, the bearing 7 is provided with a second base 11, the second base 11 is also installed on the upper surface of the first layer plate 903, the disc 1 is located at the lateral position of the first layer plate 903, the flange member 5 extends out of the first layer plate 903 for a certain distance, the disc 1 can vibrate freely and transversely, the inner boundary of the disc 1 is a clamping end, and the outer boundary is a free end.
In the embodiment, the disc 1 is made of low carbon steel, the outer diameter is 600mm, the inner diameter is 150mm, the thickness is 2mm, the conductivity delta=1.7 mu omega cm, the elastic modulus E=200 GPa, the density rho=7850 Kg/m3, and the Poisson ratio v=0.3; the servo motor 2 is a three-phase alternating current servo motor with the model SGMAV-08ADA61 of the Anchuan motor limited company, the power is 0.75KW, the rated rotation speed is 3000r/min, and the servo motor is matched with a 20-bit high-resolution serial photoelectric encoder 8, and is incremental; the speed reducer 3 is a planetary speed reducer produced by Xinbao corporation, the model is VRB-090-7-K3-19HB16, and the speed reduction ratio is 1:7; the coupler 4 is an MCSLCWK50 high-torque clamping type diaphragm coupler manufactured by Mitsmi company; the motor control box 6 is mainly a servo driver with the model number SGDV-5R5A11A of an Anchuan company, and a voltage stabilizing module is arranged in the motor control box; the bearing 7 is a deep groove ball bearing with the model 6205ZZ of Mitsmi company and is provided with a second base 11 formed by aluminum alloy; the supporting platform 9 is constructed by 60mm multiplied by 60mm profiles with different lengths and two layers of stainless steel plates.
The vibration excitation mechanism is used for exciting the disc 1 to generate transverse vibration, and comprises an eddy current actuator 12, a first conversion circuit 13 and a signal generator 14, wherein the eddy current actuator 12 is an eddy current actuator based on electromagnetic force, the change of eddy current on the surface of the disc 1 caused by changing current excites the transverse vibration of the disc 1, two ends of an iron core of the eddy current actuator 12 are symmetrical relative to the disc 1 and are close to the right edge of the disc 1, the signal generator 14 is connected with the eddy current actuator 12 through the first conversion circuit 15, specifically, the signal generator 14 is connected with the first conversion circuit 15, the first conversion circuit 15 is connected with a coil of the eddy current actuator 12, and after the signal generator 14 sends out pulse excitation signals, the pulse excitation signals are converted into coil pulse currents of the eddy current actuator 12 through the first conversion circuit 15, so that the disc 1 is driven to vibrate.
The vibration control mechanism is used for inhibiting transverse vibration of the disc 1 and comprises an eddy current damper 15 and a second conversion circuit 16, the eddy current damper 15 is an eddy current damper based on electromagnetic force, two ends of an iron core of the eddy current damper 15 are symmetrical relative to the disc 1 and are close to the left edge of the disc 1, the control component is connected with the eddy current damper 15 through the second conversion circuit 16, specifically, the control component is connected with the second conversion circuit 16, the second conversion circuit 16 is connected with a coil of the eddy current damper 15, the control component changes the coil current of the eddy current damper 15 through the second conversion circuit 16, and damping force for inhibiting vibration of the disc 1 is generated.
Further, the eddy current actuator 12 is fixed to a portion of the upper surface of the second layer plate 904 of the support platform 9 longer than the first layer plate 903 by the third base 17, the eddy current damper 15 is fixed to a portion of the upper surface of the second layer plate 904 of the support platform 9 longer than the first layer plate 903 by the fourth base 18, and the eddy current actuator 12 is opposed to the eddy current damper 15.
Specifically, the electric eddy current actuator 12 and the electric eddy current damper 15 are composed of a silicon steel sheet iron core and a coil, wherein the silicon steel sheet iron core is formed by stacking a plurality of E-shaped silicon steel sheets, and the coil is wound; the iron core of the electric vortex actuator 12 is clamped by a third base 17, the iron core of the electric vortex damper 15 is clamped by a fourth base 18, the clamping height is adjusted by an adjusting knob, and the third base 17 and the fourth base 18 are fixed on the upper surface of the second layer plate 904 of the supporting platform 9 by bolts.
In the present embodiment, the eddy current actuator 12 and the eddy current damper 15 use a stack of high permeability silicon steel sheets as an iron core, wrapping a copper wire with a wire diameter of 0.59 mm; the signal generator 14 is a multi-function signal generator manufactured by Ulide UNI-T company and with model number UTG9002C, which can generate sine wave or pulse wave of 0.2 Hz-2 MHz, the frequency error is less than or equal to 1%, and the maximum amplitude is 20V; the first conversion circuit 15 and the second conversion circuit 16 have functions of voltage conversion and signal amplification.
The vibration detection mechanism includes a laser displacement sensor 19 and a wireless acceleration sensor 20.
The number of the laser displacement sensors 19 is four, each laser displacement sensor 19 comprises a measuring head and a controller, and the matched controller is not shown, so that the measuring heads 19 in the figure can be considered to be measuring heads, the measuring heads are symmetrically arranged and opposite to the surface of the disc 1, the initial spacing is reserved, and the laser displacement sensors 19 detect vibration information of the disc 1 and then transmit the vibration information to a control assembly.
In order to facilitate adjustment of the measurement intervals of the measuring heads, the rotary disc vibration detection control device of the embodiment further comprises a working platform 21, the working platform 21 comprises four second vertical support rods 2101 and two layers of plates, the two layers of plates are a third layer plate 2102 and a fourth layer plate 2103 from top to bottom, the upper ends of the four second vertical support rods 2101 are respectively and fixedly connected with the four corners of the first layer plate 2102, the lower parts of the four second vertical support rods 2101 are respectively and fixedly connected with the four corners of the second layer plate 2103, the measuring heads of the laser displacement sensor 19 are arranged on the second vertical support rods 2101, two of which are nearer to the disc 1, of the two measuring heads are arranged on the second vertical support rods 2101, the left of which is nearer to the disc 1, the other two measuring heads are arranged on the second vertical support rods 2101, the right of which is nearer to the disc 1, and the measurement intervals of the measuring heads can be adjusted by moving the working platform 21; the measuring head of the laser displacement sensor 19 is fixed on the end face connecting plate 22, the end face connecting plate 22 is slidably connected with the second vertical supporting rod 2101, and the vertical position of the measuring head can be adjusted by moving the position of the end face connecting plate 22 on the second vertical supporting rod 2101.
The two wireless acceleration sensors 20 are arranged, the wireless acceleration sensors 20 are adsorbed on the surface of the disc 1, the wireless acceleration sensors 20 are specifically adsorbed on the surface of the disc 1 through sticking magnetic seats, the transverse vibration directions of the measuring main shaft and the disc 1 are consistent, the initial positions of the two wireless acceleration sensors 20 are symmetrically distributed about a horizontal middle line up and down, the wireless acceleration sensors 20 are connected with a wireless gateway 23, and the wireless gateway 23 is connected with a control component.
Further, the wireless acceleration sensor 20 is a sensor node in the wireless acceleration sensor measurement system, and is provided with a built-in sensing module, a power module, an acquisition processing module and a wireless transceiver module, and after the transverse vibration information of the disc 1 is detected, the transverse vibration information is transmitted to the wireless gateway 23 through a BeeNet network protocol, and the wireless gateway 23 is transmitted to the control component.
The detection of the two sensors, namely the laser displacement sensor 19 and the wireless acceleration sensor 20, can be independently carried out, when the measurement installation space is limited, the detection of the wireless acceleration sensor 20 can be independently adopted, and when the dynamic characteristic of the disc 1 needs to be studied, the detection of the laser displacement sensor 19 can be independently adopted in order to avoid the structural characteristic change caused by the mass load.
In the embodiment, the measuring head of the laser displacement sensor 19 selects LK-500 produced by Japanese Crohn's company, the laser wavelength is 670nm, the maximum power is 0.95mW, and the matched LK-2500 controller is selected for laser beam adjustment; the wireless acceleration sensor 20 adopts an A101 single-axis wireless acceleration sensor of Bo Long Jiaxing company, the measuring range is + -10 g, the transmission rate is 250K BPS, the communication distance can reach 100m, the weight is 85 g, and the wireless acceleration sensor is matched with the wireless gateway 23 with a USB interface.
As shown in fig. 5, the actuating point 24 of the eddy current actuator 12 is at the right edge of the puck 1, and the damping point 25 of the eddy current damper 15 is at the left edge of the puck 1, and there are four laser detection points, respectively, a first laser detection point 26, a second laser detection point 27, a third laser detection point 28, and a fourth laser detection point 29, on the surface of the puck 1 due to the provision of four laser displacement sensors 19, and there are two acceleration detection nodes, respectively, a first acceleration detection node 30 and a second acceleration detection node 31, on the surface of the puck 1 due to the provision of two wireless acceleration sensors 20.
The control assembly comprises an industrial personal computer 32, an A/D acquisition card 33, a conditioning circuit 34 and a D/A conversion card 35, wherein the industrial personal computer 32 is connected with the conditioning circuit 34 through the A/D acquisition card 33, is connected with the wireless gateway 23 through a USB interface, is connected with the second conversion circuit 16 through the D/A conversion card 35, and the conditioning circuit 34 is connected with the laser displacement sensor 19.
As described above, after the signal generator 14 sends out the pulse excitation signal, the pulse excitation signal is converted into the coil pulse current of the eddy current actuator 12 by the first conversion circuit 13, so as to drive the disc 1 to vibrate; after the laser displacement sensor 19 detects vibration information of the disc 1, the signal is processed through the conditioning circuit 34, the signal is collected by the A/D acquisition card 33 and transmitted to the industrial personal computer 32, after the wireless acceleration sensor 20 detects the vibration information, the vibration information is transmitted to the wireless gateway 23 through a BeeNet network protocol, and the industrial personal computer 32 reads data through a USB interface, so that the two information are compared and analyzed, wherein the update rates of the two sensors are kept consistent, and the information comparison of the industrial personal computer 32 is ensured; the industrial personal computer 32 outputs control quantity by running a control algorithm, converts signals into analog quantity through the D/A conversion card 35, and changes coil current of the eddy current damper 15 through the second conversion circuit 16 to generate damping force for inhibiting vibration of the disc 1.
In the embodiment, the A/D acquisition card 33 is a Guanhua PCL-813B12 bit 32-channel acquisition card, and the sampling rate is 25kS/s; the D/A conversion card 35 adopts a D/A conversion card of the model PCL-727, and is internally provided with a 12-bit resolution double-buffer D/A conversion circuit, so that the instant conversion from the digital output to the analog output of the industrial personal computer can be realized.
As shown in fig. 1 to 5, the present embodiment further provides a method for detecting and controlling vibration of a rotating disc, which is implemented based on the above device, and includes the following steps:
step one, initializing parameters of each part, and setting parameters of a motor control box 6, so that the motor control box 6 controls the servo motor 2 to drive the disc 1 to stably rotate.
Step two, the signal generator 14 generates an excitation signal, and the excitation signal is converted into a current signal in a coil of the eddy current actuator 12 through the first conversion circuit 13, so that the magnetic field in the area near the surface of the disc 1 is changed, the eddy current generated in the disc 1 acts on the magnetic field to generate electromagnetic exciting force, and the transverse vibration of the rotating disc 1 is excited.
And thirdly, detecting vibration signals by the laser displacement sensor 19, filtering and amplifying the vibration signals by the conditioning circuit 34, and acquiring the vibration signals by the A/D acquisition card 33 and transmitting the vibration signals to the industrial personal computer.
And step four, the wireless acceleration sensor 20 detects vibration information of the disc 1 at the adsorption position, and transmits the vibration information to the wireless gateway 23 through a BeeNet network protocol, and the wireless gateway 23 transmits the vibration information to the industrial personal computer 32.
And fifthly, after comparing and weighting analysis is carried out on the detection signals, the industrial personal computer 32 runs a control algorithm, outputs corresponding control quantity, converts the control quantity into analog quantity through the D/A conversion card 35, changes the coil current of the eddy current damper 15 through the second conversion circuit 16, and generates damping force to restrain vibration of the rotary disc 1.
It will be appreciated that the above steps three and four may be performed simultaneously.
In summary, the invention sets the measuring head of the laser displacement sensor opposite to the surface of the disc, and the wireless acceleration sensor on the surface of the disc, and adopts the laser displacement sensor to perform non-contact measurement, combines the wireless sensor to perform contact measurement with long-distance wireless transmission, combines various detection modes for avoiding winding, mutually verifies and improves reliability, multi-point detection and improves precision.
The above-mentioned embodiments are only preferred embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can make equivalent substitutions or modifications according to the technical solution and the inventive concept of the present invention within the scope of the present invention disclosed in the present invention patent, and all those skilled in the art belong to the protection scope of the present invention.
Claims (8)
1. Rotatory disc vibration detection controlling means, its characterized in that: the vibration detection device comprises a disc, a rotary driving mechanism, a vibration excitation mechanism, a vibration control mechanism, a vibration detection mechanism and a control assembly, wherein the disc is perpendicular to a horizontal plane, and the rotary driving mechanism is connected with the disc and used for driving the disc to rotate; the vibration excitation mechanism is used for exciting the disc to generate transverse vibration; the vibration control mechanism is used for inhibiting the transverse vibration of the disc; the vibration detection mechanism comprises a laser displacement sensor and a wireless acceleration sensor, the measuring head of the laser displacement sensor is opposite to the surface of the disc, and the wireless acceleration sensor is arranged on the surface of the disc and is connected with the wireless gateway; the control component is respectively connected with the vibration control mechanism, the laser displacement sensor and the wireless gateway;
the vibration excitation mechanism comprises an eddy current actuator, a first conversion circuit and a signal generator, wherein the eddy current actuator is an eddy current actuator based on electromagnetic force, the change of eddy current on the surface of the disc is caused by changing current to excite the transverse vibration of the disc, two ends of an iron core of the eddy current actuator are symmetrical relative to the disc and are close to the right edge of the disc, the signal generator is connected with the eddy current actuator through the first conversion circuit and is connected with a coil of the eddy current actuator, and after the signal generator sends out a pulse excitation signal, the pulse excitation signal is converted into coil pulse current of the eddy current actuator through the first conversion circuit so as to drive the disc to vibrate;
the vibration control mechanism comprises an eddy current damper and a second conversion circuit, wherein the eddy current damper is an eddy current damper based on electromagnetic force, two ends of an iron core of the eddy current damper are symmetrical with respect to the disc and are close to the left edge of the disc, the control assembly is connected with the eddy current damper through the second conversion circuit and connected with the second conversion circuit, the second conversion circuit is connected with a coil of the eddy current damper, and the control assembly changes the coil current of the eddy current damper through the second conversion circuit to generate damping force for inhibiting vibration of the disc.
2. The rotary disk vibration detection control apparatus according to claim 1, wherein: the rotary driving mechanism comprises a servo motor, a speed reducer, a coupler, a flange piece and a motor control box, wherein the servo motor is provided with a photoelectric encoder, an output shaft of the servo motor is connected with an input shaft of the speed reducer, an output shaft of the speed reducer is connected with a connecting shaft of the flange piece through the coupler, the flange piece is fixedly connected with a disc, and the motor control box is connected with the servo motor.
3. The rotary disk vibration detection control apparatus according to claim 2, characterized in that: the device also comprises a supporting platform, and the servo motor is fixed on the supporting platform.
4. A rotary disk vibration detection control apparatus according to any one of claims 1 to 3, wherein: the control component comprises an industrial personal computer, an A/D acquisition card, a conditioning circuit and a D/A conversion card;
the industrial personal computer is connected with the conditioning circuit through the A/D acquisition card, the wireless gateway through the USB interface and the vibration control mechanism through the D/A conversion card, and the conditioning circuit is connected with the laser displacement sensor.
5. A rotary disk vibration detection control apparatus according to any one of claims 1 to 3, wherein: the device also comprises a working platform, and the measuring head of the laser displacement sensor is arranged on the working platform.
6. The rotary disk vibration detection control apparatus according to claim 5, wherein: the measuring head of the laser displacement sensor is fixed on an end face connecting plate which is in sliding connection with the vertical supporting rod of the working platform.
7. A rotary disk vibration detection control apparatus according to any one of claims 1 to 3, wherein: the wireless acceleration sensor is adsorbed on the surface of the disc, and is internally provided with a sensing module, a power module, an acquisition processing module and a wireless transceiver module.
8. A rotary disc vibration detection control method, implemented based on the rotary disc vibration detection control device according to any one of claims 1 to 7, characterized in that: the method comprises the following steps:
in the rotary driving mechanism, a motor control box controls a servo motor to drive a disc to stably rotate;
in the vibration excitation mechanism, a signal generator generates an excitation signal, the excitation signal is converted into a current signal in a coil of an eddy current actuator through a first conversion circuit, the magnetic field in the area near the surface of the disc is changed, and eddy current generated in the disc acts on the magnetic field to generate electromagnetic excitation force so as to excite the transverse vibration of the rotating disc;
the laser displacement sensor detects vibration signals, filters and amplifies the vibration signals through the conditioning circuit, and then collects the vibration signals through the A/D collection card and transmits the vibration signals to the industrial personal computer;
the wireless acceleration sensor detects vibration information of the disc at the adsorption position, and transmits the vibration information to the wireless gateway through a BeeNet network protocol, and the wireless gateway transmits the vibration information to the industrial personal computer;
after comparing and weighting analysis is carried out on the detection signals, the industrial personal computer runs a control algorithm, outputs corresponding control quantity, converts the control quantity into analog quantity through a D/A conversion card, changes coil current of the electric vortex damper through a second conversion circuit, and generates damping force to restrain vibration of the rotary disc.
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| CN110108787B (en) * | 2019-05-07 | 2021-01-05 | 电子科技大学 | Rotatory metal component electromagnetism nondestructive test device based on motional vortex |
| JP7212785B2 (en) * | 2019-07-30 | 2023-01-25 | 京セラ株式会社 | Vibrometer and vibration detection method |
| CN111323112A (en) * | 2020-04-03 | 2020-06-23 | 宜春学院 | Wireless monitoring device for rotary mechanical vibration |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56137222A (en) * | 1980-03-31 | 1981-10-27 | Hitachi Ltd | Axial vibration monitoring method for rotating machine |
| CN1734248A (en) * | 2005-06-30 | 2006-02-15 | 上海汽轮机有限公司 | Apparatus for simulating airflow exciting-vibration in high-speed rotating machine and testing vibration |
| CN103323195A (en) * | 2013-07-06 | 2013-09-25 | 北京航空航天大学 | Whirling vibration excitation and dynamic measurement device |
| CN103821875A (en) * | 2014-03-03 | 2014-05-28 | 北京化工大学 | Vibration targeting control device for multi-span rotor shaft of rotary machine |
| WO2015139404A1 (en) * | 2014-03-21 | 2015-09-24 | 陈政清 | Axial eddy-current damping device based on helical transmission mode |
| CN105258886A (en) * | 2015-10-22 | 2016-01-20 | 西安热工研究院有限公司 | Electromagnetic harmonic wave exciting device for high-speed rotating impeller |
| CN105928676A (en) * | 2016-04-12 | 2016-09-07 | 西安交通大学 | Vibration testing device of damping mistuning blade-turbine disk with damping block structure |
| CN106568565A (en) * | 2016-10-28 | 2017-04-19 | 山东大学 | Rotating machine vibration on-line monitoring device and rotating machine vibration on-line monitoring method |
| CN107024332A (en) * | 2017-03-31 | 2017-08-08 | 西安交通大学 | A kind of experimental provision for simulating the pseudo- vibration fault of rotating machinery |
| CN107132049A (en) * | 2017-06-24 | 2017-09-05 | 东北大学 | Aero-engine blisk rotating vibration test platform and application based on laser vibration measurer |
| CN107389287A (en) * | 2017-07-18 | 2017-11-24 | 华南理工大学 | Vibrating flexible beam measurement and control device and method based on laser displacement sensor |
| CN206876293U (en) * | 2017-06-01 | 2018-01-12 | 深圳钰湖电力有限公司 | The contactless vibration measuring system of vibratory equipment |
| CN208860465U (en) * | 2018-09-30 | 2019-05-14 | 华南理工大学 | Rotating Disk Vibration detection control apparatus |
-
2018
- 2018-09-30 CN CN201811158462.0A patent/CN109084882B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56137222A (en) * | 1980-03-31 | 1981-10-27 | Hitachi Ltd | Axial vibration monitoring method for rotating machine |
| CN1734248A (en) * | 2005-06-30 | 2006-02-15 | 上海汽轮机有限公司 | Apparatus for simulating airflow exciting-vibration in high-speed rotating machine and testing vibration |
| CN103323195A (en) * | 2013-07-06 | 2013-09-25 | 北京航空航天大学 | Whirling vibration excitation and dynamic measurement device |
| CN103821875A (en) * | 2014-03-03 | 2014-05-28 | 北京化工大学 | Vibration targeting control device for multi-span rotor shaft of rotary machine |
| WO2015139404A1 (en) * | 2014-03-21 | 2015-09-24 | 陈政清 | Axial eddy-current damping device based on helical transmission mode |
| CN105258886A (en) * | 2015-10-22 | 2016-01-20 | 西安热工研究院有限公司 | Electromagnetic harmonic wave exciting device for high-speed rotating impeller |
| CN105928676A (en) * | 2016-04-12 | 2016-09-07 | 西安交通大学 | Vibration testing device of damping mistuning blade-turbine disk with damping block structure |
| CN106568565A (en) * | 2016-10-28 | 2017-04-19 | 山东大学 | Rotating machine vibration on-line monitoring device and rotating machine vibration on-line monitoring method |
| CN107024332A (en) * | 2017-03-31 | 2017-08-08 | 西安交通大学 | A kind of experimental provision for simulating the pseudo- vibration fault of rotating machinery |
| CN206876293U (en) * | 2017-06-01 | 2018-01-12 | 深圳钰湖电力有限公司 | The contactless vibration measuring system of vibratory equipment |
| CN107132049A (en) * | 2017-06-24 | 2017-09-05 | 东北大学 | Aero-engine blisk rotating vibration test platform and application based on laser vibration measurer |
| CN107389287A (en) * | 2017-07-18 | 2017-11-24 | 华南理工大学 | Vibrating flexible beam measurement and control device and method based on laser displacement sensor |
| CN208860465U (en) * | 2018-09-30 | 2019-05-14 | 华南理工大学 | Rotating Disk Vibration detection control apparatus |
Non-Patent Citations (6)
| Title |
|---|
| Hierarchical Fuzzy Vibration Control of Rotating Double Flexible Piezoelectric Beams;Qiu Zhi-chen;Journal of South China University of Technology (Natural Science Edition);全文 * |
| 圆盘振动的主动控制;邱金波, 丁汉;华中科技大学学报(自然科学版)(04);全文 * |
| 旋转圆盘振动主动控制理论及实验研究的发展;邱金波, 丁汉;机电工程技术(02);全文 * |
| 旋转柔性梁系统振动频响特性分析及振动抑制;邱志成;振动与冲击;全文 * |
| 邱志成 ; .旋转柔性梁系统振动频响特性分析及振动抑制.振动与冲击.2008,(06),全文. * |
| 高速旋转圆盘片振动特性与失稳抑制研究;李稳作;硕士电子期刊出版工程科技Ⅱ辑;全文 * |
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