CN104750064B - A kind of control system of crystal oscillator vibration damping active damping mechanism - Google Patents
A kind of control system of crystal oscillator vibration damping active damping mechanism Download PDFInfo
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- CN104750064B CN104750064B CN201510061236.0A CN201510061236A CN104750064B CN 104750064 B CN104750064 B CN 104750064B CN 201510061236 A CN201510061236 A CN 201510061236A CN 104750064 B CN104750064 B CN 104750064B
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- 238000013016 damping Methods 0.000 title claims abstract description 56
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Abstract
The invention discloses a kind of control system of crystal oscillator vibration damping active damping mechanism, it includes FPGA micro controller modules, sampling module, motor drive module, data memory module, input/output module, LCD display module and Upper machine communication module；The output end of the sampling module is electrically connected with FPGA micro controller modules, the FPGA micro controller modules are electrically connected with motor drive module and LCD display module, the FPGA micro controller modules are electrically connected with data memory module, to electrically connect between FPGA micro controller modules and input/output module, and the alternating transmission of data can be realized.Programmable system on chip (SOPC) of the platform based on FPGA realizes active damping controls, enhances system flexibility feature；And on the basis of passive vibration damping, using 3DOF active damping mechanism, further increase control accuracy.Its good damping result, frequency source stability, accuracy are high.
Description
Technical field
The present invention relates to crystal oscillator vibration damping and multi-axis motion controller technical field, and in particular to a kind of towards frequency source crystal oscillator
The 3DOF active damping mechanism dedicated control system of vibration damping.
Background technology
Frequency source is one of core of military electronic systems, is the electronic equipment for providing various signals, frequency source
Quality directly affects the performance indications of radar, navigation, communication, space electronic equipment and instrument and meter etc., is likely to result in loop not
Surely, the serious problems such as synchronous difficulty of corrupt data, code.Frequency source is often operated in temperature change and greatly, especially vibrated strongly
In adverse circumstances, therefore the Vibration Absorption Designing of frequency source is also particularly important.With the extensive use of frequency source, to its frequency
The technical indicators such as stability, accuracy, frequency range are it is also proposed that higher and higher requirement.
And for the frequency source Vibration Absorption Designing under vibration environment, it is domestic at present mostly to use passive vibration damping mode, passively subtract
Shake also known as passive vibration damping, amplitude is reduced to certain amplitude usually through by target away from vibration source or by damper system,
Application No. CN201310218199.0 patent document is disclosed a kind of crystal oscillator damping device, as shown in figure 1, the device is used for
Reduce the vibrations of crystal oscillator, the device includes box body 2；Pressing plate 3, it is arranged on the top of box body 2；8 are made only with silicon rubber
Beam 4, it is corresponded at 4 base angles of crystal oscillator 1 and 4 drift angles respectively；Described beam 4 and crystal oscillator 1 is arranged on
In the cavity that box body 2 is formed with pressing plate 3；Described crystal oscillator 1 realizes soft contact by beam 4 with the inwall of box body 2；Flexible circuit conductor
5, it is connected with the pin of the crystal oscillator 1, and described flexible circuit conductor 5 passes through pressing plate 3 and is welded on the circuit board of surrounding, the box
Connecting bolt 6 is provided between body 2 and pressing plate 3.
Above-mentioned oscillation damping method belongs to passive vibration damping mode using setting mechanical device to reduce the method for oscillating of crystal oscillator, its
It is difficult to reach desired effectiveness in vibration suppression, has the shortcomings that limited, the open weak, flexibility of vibration damping precision is low.
The content of the invention
In order to solve the above-mentioned problems in the prior art, the invention provides a kind of achievable active damping, control
Precision is high, control method is opened, the control system of crystal oscillator vibration damping active damping mechanism flexible, with preferable effectiveness in vibration suppression.
To achieve these goals, the technical solution adopted by the present invention is：A kind of control of crystal oscillator vibration damping active damping mechanism
System processed, it is included with lower module：It is FPGA micro controller modules, sampling module, motor drive module, data memory module, defeated
Enter output module, LCD display module and Upper machine communication module；The output end of the sampling module and the FPGA microcontrollers
Module is electrically connected, and the FPGA micro controller modules are electrically connected with the motor drive module and LCD display module, the FPGA
Micro controller module is electrically connected with data memory module, to electrically connect between FPGA micro controller modules and input/output module,
And the alternating transmission of data can be realized.
It is preferred that technical scheme, the FPGA micro controller modules pass through the input/output module, sampling module, upper
Machine communication module and data memory module complete the acquisition and processing of data, and processing information is carried out by the LCD display module
Visualization show, and pass through the motor drive module complete voice coil motor driver control；The sampling module includes
Analog-to-digital conversion module, the analog-to-digital conversion module is used for the digital information for obtaining three axis accelerometer analog signal；The electricity
A kind of interface unit that machine drive module is connected as FPGA microcontrollers with voice coil motor driver, passes through signal wire and voice coil loudspeaker voice coil
Motor driver is connected, and is driven for realizing with the motor of the FPGA micro controller modules and 3 voice coil motor driver compositions
The information exchange of dynamic network；The data memory module is used for the Partial key data for preserving control system；The input and output
Module is used for the digital output modul for realizing external device；The LCD display module is shown for information visuallization；It is described upper
Machine communication module is used for the FPGA microcontrollers and carries out information exchange with host computer.
Further preferred technical scheme, the sampling module also includes three axis accelerometer analog signal processing module,
The three axis accelerometer analog signal processing module is for the steady amplitude limit to 3-axis acceleration analog signal, filtering process.
Technical scheme still further preferably, the data memory module uses I2C communication modes complete the interaction of data.
The motor drive module completes the interaction of data and the driving of voice coil motor using SPI communication modes.
The Upper machine communication module realizes the number of the FPGA micro controller modules and host computer using USB communication modes
According to information exchange.
I described in claim 42USB described in SPI communication functions described in C communication functions, claim 5 and claim 6 leads to
Communication function, is completed by FPGA micro controller modules.
The FPGA micro controller modules turn displacement unit and active damping controls including 3DOF mechanism vibrations acceleration
Algorithm unit, the 3DOF mechanism vibrations acceleration turn displacement unit be used for realize suppress vibrate control input, the master
Dynamic vibration damping control algolithm unit is used to provide a kind of effective control strategy, and realizes that suppression is shaken by the voice coil motor driver
Dynamic control output.
The FPGA micro controller modules also include test cell, and the test cell is used to realize to weight in motion process
Want the control and monitoring in real time of state.
As a result of above technical scheme, make the beneficial effects of the present invention are：
A kind of control system of crystal oscillator vibration damping active damping mechanism of the present invention uses the programmable system on chip based on FPGA
(SOPC) active damping controls are realized, system flexibility feature is enhanced；The present invention is subtracted on the basis of passive vibration damping using active
Shake mechanism controls, improve control accuracy；It is integrated with active damping controls algorithm in the controller simultaneously, algorithm is opened, flexibly,
Autonomous Design it can change as needed.
Brief description of the drawings
Fig. 1 is a kind of structural scheme of mechanism of crystal oscillator damping device of prior art；
Fig. 2 is a kind of controller function module diagram of the control system of crystal oscillator vibration damping active damping mechanism of the invention；
Fig. 3 is a kind of nonshared control unit FPGA microcontrollers of the control system of crystal oscillator vibration damping active damping mechanism of the invention
Functions of modules schematic diagram；
Fig. 4 is constituted for a kind of nonshared control unit hardware capability of control system of crystal oscillator vibration damping active damping mechanism of the invention
Schematic diagram.
Embodiment
To make the object, technical solutions and advantages of the present invention of greater clarity, with reference to instantiation and with reference to attached
Figure, the present invention is described in more detail.It should be understood that these descriptions are merely illustrative, and it is not intended to limit the present invention's
Scope.In addition, in the following description, the description to known features and technology is eliminated, to avoid unnecessarily obscuring the present invention
Concept.
A kind of control system of crystal oscillator vibration damping active damping mechanism of the present invention is made up of multiple hardware and control module, such as
Shown in Fig. 2, a kind of control system of crystal oscillator vibration damping active damping mechanism include FPGA micro controller modules, sampling module,
Motor drive module, data memory module, input/output module, LCD display module and Upper machine communication module.The sampling mould
The output end of block is electrically connected with the FPGA micro controller modules, the FPGA micro controller modules and the motor drive module
With LCD display module electrical connection, the FPGA micro controller modules are electrically connected with data memory module, FPGA micro controller modules
To electrically connect between input/output module, and the alternating transmission of data can be realized.
The FPGA micro controller modules turn displacement unit, active damping controls including 3DOF mechanism vibrations acceleration
Algorithm unit and test cell, the 3DOF mechanism vibrations acceleration turn displacement unit be used for realize suppress vibrate control
Input, the active damping controls algorithm unit is used to provide a kind of effective control strategy, and driven by the voice coil motor
Device realizes the control output for suppressing vibration, and the test cell is used to realize to the control of important state in motion process and in real time
Monitoring.The FPGA micro controller modules are deposited by the input/output module, sampling module, Upper machine communication module and data
Acquisition and processing that module completes data are stored up, the visualization for carrying out processing information by the LCD display module is shown, and is passed through
The motor drive module completes the control of voice coil motor driver.The sampling module includes analog-to-digital conversion module and three axles add
Speedometer analog signal processing module, the analog-to-digital conversion module is used for the digital quantity letter for obtaining three axis accelerometer analog signal
Breath, the three axis accelerometer analog signal processing module is used for the steady amplitude limit to 3-axis acceleration analog signal, at filtering
Reason.A kind of interface unit that the motor drive module is connected as FPGA microcontrollers with voice coil motor driver, passes through letter
Number line is connected with voice coil motor driver, uses SPI communication modes to realize with the FPGA micro controller modules and 3 voice coil loudspeaker voice coil electricity
The motor of machine driver composition drives the information exchange of network.Close the part that the data memory module is used to preserve control system
Key data, using I2C communication modes complete the interaction of data.The input/output module is used for the switching value for realizing external device
Control；The LCD display module is shown for information visuallization.The Upper machine communication module is real using USB communication modes
Existing FPGA microcontrollers carry out information exchange with host computer.
I described above2C communication functions, SPI communication functions and USB communication functions, have come by FPGA micro controller modules
Into.
In the present invention, sampling module includes AD AD conversion units, and external devices three axis accelerometer is believed for realizing
Number sampling, and complete the function switching signal in hardware circuit.
In the present invention, motor drive module includes DA D/A conversion units, for realizing to 3 motor driver control numbers
Word amount signal it is simulated, and complete enable driving function.
In the present invention, data memory module is used for the access to key parameter in control system or program code.Pass through I2C
Communication modes, the read-write operation of external spread F lash storage chips is completed by FPGA microcontrollers.
Input/output module is used for the I/O mouths control of FPGA microcontrollers, including the control of test indicator lamp, survey in the present invention
Examination enables control etc. by key control and segment chip.
In the present invention, LCD display module is used for the real-time refreshing visualization display of key parameter and key message.
In the present invention, the information exchange that Upper machine communication module is used between host computer and FPGA microcontrollers.Host computer
Communication module is the bridge for connecting control system and user interface, and host computer sends control parameter and gives FPGA microcontrollers, FPGA
After microcontroller is by parsing and data processing, application control parameter adjusts control strategy, drive mechanism motion.FPGA micro-controls
The state of control system and related necessary data are returned to host computer by device processed, are easy to checking, analyzing for user.It is logical in host computer
Module section is interrogated using predefined communication and verification agreement, the reliability of data transfer can be effectively ensured.Upper machine communication mould
Block is communicated using USB modes, including UART communication units, USB conversion chips and respective external in FPGA microcontrollers
Interface is constituted.
As shown in Figure 3 and Figure 4：
In the present invention, FPGA micro controller modules refer to FPGA minimum systems, by FPGA control chip, external clock circuit,
The external circuits such as reset circuit, power module are constituted.The function to be realized of FPGA micro controller modules includes test cell, data
Processing and resolution unit, control order realize that unit, active damping algorithm unit, acceleration turn displacement unit and various I/
O controls driving interface unit.
The test cell that FPGA micro controller modules are included be used for master control fpga chip debug, outside key state signal
Monitoring, protection.
Data processing and resolution unit that FPGA micro controller modules are included, for UART, SPI, I2Tri- kinds of modes of C are received
Parsing, processing to data.For every kind of interface, on the basis of PHY, define application layer protocol to ensure number
According to correctness, pass through analysis program processing obtain actual transmissions useful data.
The control order that FPGA micro controller modules are included realizes that unit is used to realize to motion according to host computer order
The drive control of mechanism.Control order realizes that unit is related to the function or data of above-mentioned all units, by different
A variety of data that the corresponding functional unit of command calls and outside various interfaces are obtained；By respective handling, then by voice coil loudspeaker voice coil electricity
Machine driving completes mechanism kinematic control.
Acceleration, which turns displacement unit, to be used to the vibration acceleration signal of three axis accelerometer being converted into vibration control displacement
Signal.
The active damping algorithm unit that FPGA micro controller modules are included is for completing the reading of vibration displacement data simultaneously
Provide the active control effect under corresponding vibration.
The I/O control driving interface units that FPGA micro controller modules are included are used to realize above-mentioned and FPGA micro-controls
The bottom layer driving of the associated all modules of device processed.FPGA microcontrollers will obtain related data and supply other units and use, and
It will be sent by the generation of other units.
The nonshared control unit hardware platform of the present invention, the Stratix II FPGA control chips used are using TSMC's
The low K insulating processes technology productions of 90nm, equivalent logic unit (LE) is up to 180K, and in-line memory reaches 9Mbits, work
Frequency can reach 550MHz, with high performance and density.The bulk velocity described above for drastically increasing system,
The real-time response of quick realization and system for the various algorithms inside controller provides solid physics foundation.
It should be appreciated that the above-mentioned embodiment of the present invention is used only for exemplary illustration or explains the present invention's
Principle, without being construed as limiting the invention.Therefore, that is done in the case of the thought and scope without departing from the present invention is any
Modification, equivalent substitution, improvement etc., should be included in the scope of the protection.In addition, appended claims purport of the present invention
Covering the whole changes fallen into scope and border or this scope and the equivalents on border and repairing
Change.
Claims (1)
1. a kind of control system of crystal oscillator vibration damping active damping mechanism, it is characterised in that it is included with lower module：FPGA microcontrollers
Device module, sampling module, motor drive module, data memory module, input/output module, LCD display module and host computer are logical
Interrogate module；The output end of the sampling module is electrically connected with the FPGA micro controller modules, the FPGA micro controller modules
Electrically connected with the motor drive module and LCD display module, the FPGA micro controller modules are electrically connected with data memory module
Connect, FPGA micro controller modules are to electrically connect with input/output module, and can realize the alternating transmission of data；The FPGA micro-controls
Device module processed completes data by the input/output module, sampling module, Upper machine communication module and data memory module
Obtain and handle, the visualization for carrying out processing information by the LCD display module is shown, and passes through the motor drive module
Complete the control of voice coil motor driver；The sampling module includes analog-to-digital conversion module, and the analog-to-digital conversion module is used to obtain
Take the digital information of three axis accelerometer analog signal；The motor drive module is used as FPGA microcontrollers and voice coil motor
A kind of interface unit of driver connection, is connected by signal wire with voice coil motor driver, micro- with the FPGA for realizing
The motor of controller module and 3 voice coil motor driver compositions drives the information exchange of network；The data memory module is used
In the Partial key data for preserving control system；The input/output module is used for the digital output modul for realizing external device；Institute
LCD display module is stated to show for information visuallization；The Upper machine communication module be used for the FPGA microcontrollers with
Position machine carries out information exchange；The sampling module also includes three axis accelerometer analog signal processing module, and three axle accelerates
Degree meter analog signal processing module is for the steady amplitude limit to 3-axis acceleration analog signal, filtering process；The data storage
Module uses I2C communication modes complete the interaction of data；The motor drive module completes the friendship of data using SPI communication modes
The driving of mutual and voice coil motor；The Upper machine communication module realizes the FPGA micro controller modules using USB communication modes
Interacted with the data message of host computer；The I2C communication functions, the SPI communication functions and USB communication functions are stated, by
FPGA micro controller modules are completed；The FPGA micro controller modules include the indexing of 3DOF mechanism vibrations acceleration and move single
Member and active damping controls algorithm unit, the 3DOF mechanism vibrations acceleration turn displacement unit be used for realize suppress vibrate
Control input, the active damping controls algorithm unit is used to provide a kind of effective control strategy, and by voice coil loudspeaker voice coil electricity
Machine driver realizes the control output for suppressing vibration；The FPGA micro controller modules also include test cell, the test list
Member is used to realize the control and monitoring in real time to important state in motion process；
The control system of the crystal oscillator vibration damping active damping mechanism, is realized using the programmable system on chip SOPC based on FPGA and led
Dynamic vibration damping control, strengthening system flexible characteristic；Active damping mechanism controls are used on the basis of passive vibration damping, control essence is improved
Degree；Integrated active damping controls algorithm in the controller simultaneously.
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| CN201510061236.0A CN104750064B (en) | 2015-02-05 | 2015-02-05 | A kind of control system of crystal oscillator vibration damping active damping mechanism |
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| CN201510061236.0A CN104750064B (en) | 2015-02-05 | 2015-02-05 | A kind of control system of crystal oscillator vibration damping active damping mechanism |
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Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008039038A (en) * | 2006-08-04 | 2008-02-21 | Honda Motor Co Ltd | Vibration reducing device |
| US7580217B2 (en) * | 2007-01-02 | 2009-08-25 | Hitachi Global Storage Technologies Netherlands B.V. | Disk drive with hybrid analog-digital acceleration feedforward control system and method for rejecting rotational vibration |
| CN101609341B (en) * | 2008-06-18 | 2011-02-09 | 中国科学院自动化研究所 | Active vibration isolation control platform |
| CN101609305B (en) * | 2008-06-18 | 2011-11-30 | 中国科学院自动化研究所 | Active vibration isolation control method based on voice coil motor |
| CN102705434A (en) * | 2012-06-25 | 2012-10-03 | 江西连胜科技有限公司 | Ultralow frequency active vibration isolation device and control method thereof |
| CN102981522B (en) * | 2012-11-29 | 2015-03-25 | 中国科学院武汉物理与数学研究所 | Small active vibration control system based on piezoelectric ceramic and piezoelectric accelerometer |
| CN103338020A (en) * | 2013-06-04 | 2013-10-02 | 上海无线电设备研究所 | A crystal oscillator damping device |
| CN104196952B (en) * | 2014-07-14 | 2016-01-13 | 西安电子科技大学 | The miniature flexible hinge vibration reduction platform of two-freedom and oscillation damping method |
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