CN106227136A - A kind of tunable superconductor resonator control system based on PLC and touch screen and method - Google Patents
A kind of tunable superconductor resonator control system based on PLC and touch screen and method Download PDFInfo
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- CN106227136A CN106227136A CN201610546229.4A CN201610546229A CN106227136A CN 106227136 A CN106227136 A CN 106227136A CN 201610546229 A CN201610546229 A CN 201610546229A CN 106227136 A CN106227136 A CN 106227136A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
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- G05B2219/25268—PLD programmable logic device
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Abstract
The invention discloses a kind of tunable superconductor resonator control system based on PLC and touch screen and method.Native system includes a PLC substrate, and this PLC substrate is provided with PLC power module, CPU module, position control module, the first analog input module, the second analog input module, analog output module, TTL input module；The radiofrequency signal exit being coupled out in the incident power radiofrequency signal exit of superconductor cavity and superconductor cavity is connected with two inputs of a phase discriminator respectively, this phase detector output and the first analog input module, TTL input module input connect, second analog input module is connected with displacement transducer outfan and piezoelectric ceramic high-voltage power source analog voltage input, position control module is connected with stepper motor driver pulse input end, analog output module is connected with piezoelectric ceramic high-voltage power source analog input end, and this CPU module is connected with a touch screen unit.The present invention is capable of automatically searching for catch lock superconductor cavity frequency.
Description
Technical field
The present invention relates to a kind of tunable superconductor resonator control system based on PLC and touch screen and method, belong to particle and accelerate
Device, low-temperature superconducting technical field.
Background technology
In order to enable the line through superconductor cavity persistently to accelerate, need the resonant frequency of superconductor cavity is locked in work frequency
In rate, then it is necessary for each chamber and is equipped with tuner and tuning control system, the guarantee of a set of continuously adjustable chamber frequency
RF power feed in superconductor cavity is used for accelerated current.Wherein, tuning control system be mainly used for compensate or damping superconductor cavity
During operation, the superconductor cavity caused by the factors such as helium pressure fluctuation, beam current distribution, Lorentz off resonance and mike effect is frequently
Rate changes, and makes superconductor cavity be in resonant condition all the time by feedback control.
Tuning control system regulates superconductor cavity frequency using tuner as actuator, in the last few years, both at home and abroad
Tuning manner does not has theoretic innovation, typically uses the frame for movement of motor+piezoelectric ceramics (optional), by changing
Cavity axial length regulates the frequency of superconductor cavity.The analog electronics of tuning control system many employings in early days is built, 20th century
The nineties, some big laboratorys start based on digital signal processor DSP (Digital Signal Processor), scene
Programmable gate array FPGA (Field Programmable Gate Array) realizes tuning control system, also do not carry out based on
The tuning control system research of PLC and touch screen.
Tuner is typically made up of mechanical tuner and piezoelectric ceramics two parts, in the world high energy acclerator seminar of Japan
Knit the tuning control system principle of (KEK) as it is shown in figure 1, tuning control system is the radiofrequency signal according to superconductor cavity incident power
(Pin) phase contrast and between the radiofrequency signal (Pt) that is coupled out in superconductor cavity of antenna is to carry out frequency regulation.Wherein Pin
Incident power size and coupled power size is characterized respectively with the amplitude of Pt.
According to phase place extent control zone can be divided into 4 parts:
(1) piezoelectric ceramics control zone: when phase contrast is less than ± 1 °, it is big that piezoelectric ceramic actuator generation is proportional to phase contrast
Little high pressure, the high pressure being added in piezoelectric ceramics two ends can make it extend or shorten, thus change cavity frequency, now stepping electricity
Machine is in halted state；
(2) overlay region: piezoelectric ceramics and motor all can produce driving signal change cavity frequency；
(3) motor speed-change area: only controllor for step-by-step motor produces pulse signal and drives electric machine rotation, electric machine rotation
Speed (unit: Hz) is proportional with the size of phase contrast absolute value, and now piezoelectric ceramics two ends only have certain bias high voltage, nothing
The ability of regulation cavity frequency；
(4) motor constant speed district: when phase contrast exceedes certain scope, the impulse speed being sent to motor is perseverance
Definite value, unrelated with phase contrast size.
The shortcoming of prior art
International tuning control program is typically all designed based on this principle (see Fig. 1), and developer can basis
Different control accuracies and demand are correspondingly improved, and the most domestic tuning control program is mainly based upon simulation electronic skill
Art, DSP and FPGA technology realize, and mainly have the disadvantage that and not enough:
1. Analog Electronics Technique shortcoming
(1) for complicated analog circuit, if once design completion of processing, if would having change device or increasing function
Demand, be required for re-working, the longest and relatively costly；
(2) analog device distribution is complicated, is not easy to debugging, needs abundant commissioning experience and longer debugging time；
(3) analog device cannot perform more complicated algorithm, and control accuracy is low；
(4) poor anti jamming capability, is easily subject to the interference of noise.
2.DSP and FPGA technology shortcoming
(1) relatively costly, for same set of tuning control system, cost is several times of PLC；
(2) in order to save the construction cycle, there are a basic board in general each DSP and fpga chip company, but the input of board
Output port is less, is not suitable for the control of multiple tuner.
(3) feature of tuning control system is to need multiaxis step motor control and multiple digital to analog converter DAC
(Digital to Analog Converter) controls for piezoelectric ceramics, needs the single and same interface of resource to need quantity
More, and DSP and FPGA board necessary resources are enriched, but negligible amounts, the wasting of resources can be caused.
In addition, analog electronics, DSP with FPGA board need to use bus to set with communicating of user interface
Count with more complicated IOC IOC (Input/Output Controller) just it is achieved that the complexity that communicates, and
Poor anti jamming capability.
Summary of the invention
For technical problem present in prior art, it is an object of the invention to provide a kind of based on PLC and touch screen
Tunable superconductor resonator control system and method.
The technical scheme is that
A kind of tunable superconductor resonator control system based on PLC and touch screen, it is characterised in that include a PLC substrate, should
PLC substrate is provided with PLC power module, CPU module, position control module, the first analog input module, the second simulation input mould
Block, analog output module, TTL input module；It is coupled out in the incident power radiofrequency signal exit of superconductor cavity and superconductor cavity
Radiofrequency signal exit is connected with two inputs of a phase discriminator respectively, an outfan of this phase discriminator through a low pass filter with
First analog input module connects, and another outfan of this phase discriminator is connected with this TTL input module input, and the second simulation is defeated
Entering module to be connected with tunable superconductor resonator displacement transducer outfan and piezoelectric ceramic high-voltage power source analog voltage input, position is controlled
Molding block is connected with the stepper motor driver pulse input end of tunable superconductor resonator device, analog output module and piezoelectric ceramics high pressure
Power supply analog input end connects, and this CPU module is connected with a touch screen unit；Wherein,
CPU module, is processed for the signal collecting each input module and the parameter inputted by touch screen,
Generate control signal and be sent to respective modules；
First analog input module, for gathering phase signal and the superconductor cavity chamber pressure of the phase discriminator output of superconductor cavity
Signal is sent to CPU module, and CPU module generates different pulse frequencies respectively according to phase signal, superconductor cavity chamber pressure signal
Instruction is sent to position control module；
Second analog input module, for gather the voltage signal of step motor position sensor in tunable superconductor resonator device,
In tunable superconductor resonator device, the input signal of piezoelectric ceramic high-voltage power source is sent to CPU module, CPU module according to this voltage signal,
In tunable superconductor resonator device, the input signal of piezoelectric ceramic high-voltage power source generates instruction and is sent to analog output module；
Position control module, generates pulse signal for the instruction sent according to CPU module, controls in tunable superconductor resonator device
Motor rotational frequency, rotation direction；
Analog output module, the instruction for sending according to CPU module exports analog voltage signal to piezoelectric ceramics high pressure
Power supply, controls piezoelectric ceramics elongation or the length shortened；
TTL input module, for gathering whether phase discriminator generates more than setting value according to the chamber pressure amplitude degree of superconductor cavity
Signal is also sent to CPU module, and CPU module generates instruction according to this signal and is sent to position control module.
Further, analog input module is provided with a low pass filter, for the filter to superconductor cavity mechanical oscillation signal
Ripple.
Further, phase signal is sent out after a pi controller and low pass filter process by this CPU module
Give this analog output module.
Further, CPU module is sequence type CPU module；Also include a TTL output module, be used for gathering CPU module root
According to tunable superconductor resonator device ready signal, fault-signal and motor turn signal and be sent to central control system；This TTL
Input module, is additionally operable to gather tuning control system tuning signal and transmitter is opened signal and is sent to CPU module；Relay
Input module, be respectively used to gather step motor position upper limit alarm signal, step motor position lower limit alarm signal and
Stepper motor driver signal working properly is also sent to CPU module.
A kind of tunable superconductor resonator control method based on PLC and touch screen, the steps include:
1) according to demand motor rotational frequency in tunable superconductor resonator device, sent out arteries and veins are set by touch screen operation interface
Strokes per minute；
2) position control module sends out pulse according to the rotational frequency set and sent out umber of pulse to stepper motor driver, drives
The axial length that dynamic motor rotation changes superconductor cavity regulates the frequency of superconductor cavity；
3) whether the detection automatic hunting zone of motor is in the range of setting search, if not in the range of setting search
Then reset the automatic hunting zone of motor；If in the range of setting search, then opening signal source and transmitter add
One power；
4) the CPU module detection phase contrast that collects of analog input module of PLC, when phase contrast > 0 ° time, control position control
Molding block output pulse signal, to stepper motor driver, reduces phase contrast；With should phase contrast < when 0 °, CPU module control bit
Put control module output pulse signal to stepper motor driver, reduce phase contrast, until superconductor cavity chamber pressure is more than setting value；
5) in this CPU module detection superconductor cavity of collecting of analog input module incident power radiofrequency signal with from superconductor cavity
Between the radiofrequency signal being inside coupled out, whether phase contrast is at ± N1Between °, if it was not then motor stops operating, return
Step 1)；If this phase contrast is at ± N1Between ° but more than ± N5°, then perform automated closed-loop and control program, until phase contrast exists
±N5°；Wherein, N1More than N5。
Further, the control method of this automated closed-loop control program is:
1) N is worked as2° < phase contrast < N1° or-N1° < phase contrast <-N2° time, position control module output constant frequency pulse pair
The rotation direction of motor is adjusted, and makes superconductor cavity frequency shift, continuous approach signal source frequency；
2) N is worked as4° < phase contrast < N2° or-N4° < phase contrast <-N2° time, this CPU module is according to the size of phase contrast absolute value
The rotating speed of motor is carried out real-time adjustment, makes superconductor cavity frequency shift, continuous approach signal source frequency；
3) as-N3° < phase contrast < N3° time, motor stops operating；This CPU module collects according to analog input module
Superconductor cavity chamber pressure signal Vc calculate an analog voltage, through analog output module, this analog voltage be sent to superconduction intonation
The piezoelectric ceramic high-voltage power source of humorous device, controls piezoelectric ceramics elongation or the length shortened；Wherein, N1>N2>N3>N4>N5。
Further, the method according to the size of phase contrast absolute value, the speed of motor being carried out real-time adjustment
For: stepper motor speed=phase contrast * K1+b；Wherein, K1=167, b=667.
Further, this CPU module calculates this analog voltage formula and is: analog voltage=phase contrast absolute value * K2+
(Vc/Leff)^2*K3)；Wherein, K2 is a fixed value, for making the numerical value of CPU memory address be converted into the voltage of high voltage power supply
Value；K3 is the Lorentz coefficient of superconductor cavity, and Leff is effective accelerating length of superconductor cavity.
Further, analog input module is provided with one for filtering the filtering of the signal that superconductor cavity mechanical oscillation produces
Device.
Further, the setting value of chamber pressure amplitude degree is 0.1MV；N1=45, N2=10, N3=6, N4=4, N5=1；Constant frequency
Rate pulse is the pulse of 1000Hz；The a width of 50Hz of band of wave filter.
Compared with prior art, the positive effect of the present invention is:
This invention, based on PLC and touch screen, compares above scheme (analog circuit control program, DSP and FPGA numeral
Control program) have the advantage that
(1) cost is reduced: compared with DSP and FPGA numeral board, business-like PLC cost is relatively low, and cost performance is higher；
(2) being prone to adjusted design scheme, can increase input/output interface at any time, easy to maintenance, the construction cycle is short, motility
High: during system debug, if system needs to change some functions, to increase some system resources, it is only necessary to needed for buying again
Program is also revised by PLC module (input/output module) accordingly, shortens the construction cycle, and without complete machine more
Change；
(3) resource consolidation, on-demand selection, prevent the wasting of resources: the control object of tuning control system be motor and
Piezoelectric ceramics, along with improving constantly of accelerator energy demand, in current accelerator, superconductor cavity quantity gradually increases, and has very
To reaching several ten thousand, and each superconductor cavity has been required for a set of tuner, and it is many that this just requires that tuning control system can be carried out
Shaft step motor controls, and has more digital to analog converter and carry out piezoelectric ceramics control.PLC early has been achieved with module at present
Change, and type of modules is enriched, it is not necessary to customization can select corresponding module according to system requirements, makes the utilization more adduction of resource
Manage, efficiently；
(4) it is easily achieved rudimentary algorithm control and control accuracy is higher: PLC has special algorithm controls instruct, as
Control algolithm proportional-plus-integral controller the more commonly used on tuning control system (PI, for phase signal is amplified and
Integral Processing, controls the phase signal fluctuation range of tuner control system within ± 1 °), can be controlled by the PI of PLC
System instruction realizes, convenient and swift, and the control accuracy of current PLC is the highest, and wherein digital to analog converter control figure place is up to 16,
Through considerably beyond tuning control system accuracy requirement.
(5) high reliability and capacity of resisting disturbance are strong: PLC, owing to using modern large scale integrated circuit technology, uses strict
Production technology manufacture, internal circuit take advanced person Anti-Jamming Technique, there is the strongest capacity of resisting disturbance；PLC also can enter
Row dual redundant, the mean time between failures of the PLC of these use redundancies CPU exceeds well over 300,000 hours, and PLC is with hardware
Fault self detecting function, can send a warning when breaking down in time, and fault also can be substantially reduced, and has higher reliable
Property；
(6) comprehensive, perfect in shape and function, the suitability is strong: PLC has stronger communication capacity, supports that serial ports, Ethernet connect
Mouthful etc., along with the development of human machine interface technologies, use PLC to form various control systems and become very easy, operating user interface
Simply, stable, it is not easily susceptible to external interference.It is comprehensive that the present invention controls clear logic, and code has preferable transplantability, can
Tuning control system for large scientific facilities afterwards provides preferable reference.
Accompanying drawing explanation
Fig. 1 is BEPCII tuning control system schematic diagram；
Fig. 2 is tunable superconductor resonator control system block diagram based on PLC and touch screen；
Fig. 3 is tuning control system schematic diagram；
Fig. 4 is the tuning control method flow chart of the present invention.
Detailed description of the invention
In order to be better understood from technical scheme, below in conjunction with the accompanying drawings and the present invention is done into one by specific embodiment
The detailed description of step.
Tunable superconductor resonator control system uses PLC as core controller, sets up high-frequency electric field in superconduction frequency cavity, profit
The high-frequency phase obtained with phase discriminator is poor, guides motor and piezoelectric ceramics that the resonant frequency in chamber is carried out feedback control, with
Touch screen constitutes man machine interface, it is achieved catch lock chamber frequency automatically, and phase controlling precision is up to ± 0.7 °, and respective frequencies controls
Precision is ± 4Hz, and the tuning sensitivity of this superconductor cavity is 1.1kHz/um, phse sensitivity is 5nm/1 °, then phase and frequency
Corresponding relation is 5.5Hz/1 °.
1. control system operation principle
If desired feed-in power in superconductor cavity, has first had to signal source, and what signal source sent is low-power level signal, signal
Arriving transmitter through interlock switch, radio-frequency (RF) switch, signal is exaggerated through launching opportunity, the high-power signal of transmitter output
Through directional coupler feed-in superconductor cavity, only when the frequency of superconductor cavity is consistent with signal source frequency, power could surpass in feed-in
Guide cavity is used for accelerated current.
The radiofrequency signal (Pt) that the radiofrequency signal (Pin) of superconductor cavity incident power and antenna are coupled out in superconductor cavity accesses
Phase discriminator carries out phase demodulation, and the phase signal obtained (ideally for d. c. voltage signal, but typically can exist high frequency division
Amount) filter high fdrequency component through low pass filter and obtain ideal d. c. voltage signal, by the plug-in unit analog digital conversion of PLC
In modules A DC (Analog to Digital Converter) input PLC, the Level OK signal of phase discriminator output simultaneously is to PLC
TTL input module, make PLC may determine that the size of intracavity field, PLC is by judging that the size of phase signal is to motor
The high pressure of rotational frequency and high voltage power supply carries out feedback control, and schematic diagram refers to Fig. 3, and the phase demodulation scope of phase discriminator is ± 180 °,
Phse sensitivity is 10mV/ °, then PLC can judge phase place extent by the d. c. voltage signal collected.Use ladder diagram
Coding, the acceleration time and the deceleration time that arrange motor is respectively 500ms.
As it is shown on figure 3, when phase signal is less than ± 4 °, only piezoelectric ceramics work, motor is in halted state,
Phase signal is after the low pass filter that PLC ladder diagram PID instruction and D/A converter module DAC are built-in processes, by DAC
DC voltage to the high voltage power supply output amplitude of piezoelectric ceramics Yu phase contrast proportional (Proportional coefficient K 2 is 0.5V/ °)
(Piezo Output), and Piezo Output signal be limited in PLC ± 3V within, signal is put through high voltage power supply
Being added in the two ends of piezoelectric ceramics after big 100 times, wherein the HVB high voltage bias of high voltage power supply is 500V, actual is added in piezoelectric ceramics two
The voltage of end is 200V-800V, and the change of high pressure can change the collapsing length of piezoelectric ceramics, and then change chamber by mechanical tuning device
Body axial length.
When phase signal is between+4 °～+6 ° and-6 °～-4 °, piezoelectric ceramics and motor collaborative work, piezoelectricity
A pottery control mode as above paragragh describes, and stepping motor system control mode sees below a paragragh and describes.
When phase signal is between+6 °～+10 ° and-10 °～-6 °, piezoelectric ceramics without regulating power, only stepping
Motor works.Trapezoid figure program control PLC position control module is utilized to export the pulse of different frequency to stepper motor driver,
This frequency and phase contrast proportional (Proportional coefficient K 1 is 167Hz/ °), then driver can drive stepping motor main axis, pass through
The length of tuner regulation superconductor cavity, and then change superconductor cavity frequency.
When phase signal is between+10 °～+45 ° and-45 °～-10 °, motor enters constant speed region, PLC ladder
It is 1000Hz that shape figure program arranges motor rotational frequency.When phase signal exceed ± 45 ° time, motor is in stopping
State, it is believed that exceed tuning control system pull-in range.
2.PLC Control system architecture and signal processing flow
Be illustrated in figure 2 tunable superconductor resonator control system block diagram based on PLC and touch screen, PLC and touch screen based on
Too net ICP/IP protocol communicates, and touch screen can be by having come to the address of its control distribution PLC as operator interface
Become to control function.The PLC control system of the present invention mainly includes the substrate of 13 groove positions, PLC power module and PLC input and output mould
Block.The substrate of 13 groove positions represents at most can install 13 PLC module in addition to PLC power module, according to PLC installation manual,
Different PLC module is arranged on PLC substrate in a certain order, and wherein PLC power module and CPU module are to pacify
Filling, and the installation site leftmost side must be power module, groove position 1# must install CPU module, other input/output of PLC
Module can be installed with selectivity, and installation site can be arranged on arbitrary groove position, 2#-13# groove position according to developer's demand, without clearly
Installation site regulation.Being to be communicated by the bus on substrate between each module, present system PLC module is from left to right
Erection sequence such as table 1:
Table 1 PLC system module distribution table
0# groove position power module is responsible for each module for power supply of PLC；1# groove position sequence type CPU module is patrolled according to trapezoid figure program
Collect the data that all PLC output module are collected and carry out signal processing, be disposed and multiple output control signal is sent to
PLC output module, as analog output signal is sent to analog output module 6#, TTL output signal is sent to TTL output module
11#, pulse output signals is sent to position control module；2# groove position position control module (totally 8 spindle motors control output) can root
The instruction sent according to CPU module sends the pulse of different frequency, for controlling rotational frequency and the direction of motor, CPU mould
Tuber generates instruction according to the parameter that touch screen is arranged and is sent to position control module；(the totally 8 tunnel simulation of 3# groove position analog input module
Voltage/current inputs, lower same) it is responsible for gathering the voltage signal (Tuner of 7 tunnel analogue signal amounts-step motor position sensor
Position)；4# groove position analog input module is responsible for gathering the input of 7 road analog voltage signal amounts-piezoelectric ceramic high-voltage power source
Signal (Piezo Input)；5# groove position analog input module is responsible for the phase of the 7 road analog voltage signal amounts that gather-phase discriminator output
Potentiometer signal；6# groove position analog output module (totally 8 tunnel analog voltage/current output) is used for exporting a range of simulation electricity
Pressure signal (Piezo Output) gives piezoelectric ceramic high-voltage power source, controls piezoelectric ceramics elongation or the length shortened；7# groove position,
8# groove position, the relay input module (totally 8 road relay contact input) of 9# groove position are each responsible for gathering 7 road step motor position
Upper limit alarm signal (Up limit switch), step motor position lower limit alarm signal (Down limit switch)
Signal working properly with stepper motor driver (READY)；The TTL input module (totally 32 road TTL signal input) of 10# groove position is negative
Duty gathers 7 road Level OK signals, and 7 roads tuning control system tuning signal (Tuned) and No. 7 transmitters have turned on signal (RF
ON)；The TTL output module (totally 32 road TTL signal output) of 11# groove position is for adjusting status signal-7 tunnel of tuning control system
Humorous device fault-signal (Error), No. 7 tuner standby ready signal (Ready), No. 7 motors are just at turn signal (Run)
It is sent to central control room.12# groove position analog input module is responsible for gathering 7 superconductor cavity chambeies, road pressure signal (Vc), and 13# groove position is FA
Bus module, for connecting other PLC slave station.
For the duty of clear and definite tuner, PLC utilizes corresponding acquisition module to be gathered signals below: peace
Full interlocking signal, the signal that tuner is relevant, such as voltage signal (Tuner Positon) and the electricity of step motor position sensor
Up/down spacing alarm signal (Up/Down limit switch), the input signal of piezoelectric ceramic high-voltage power source are put in seat in the plane
(Piezo Input), stepper motor driver signal working properly (READY), transmitter has turned on signal (RF ON), tuning
Control systems tuning signal (Tuned) etc., all signals collected all can be stored in the memory address of CPU, and CPU is by ladder
The shape figure program signal to collecting carries out certain process, after being disposed CPU to PLC output module (such as position control mould
Block and analog output module etc.) send control command, tuner perform；Meanwhile, PLC also can send letter to other system
Number, the duty of report tuning control system, such as tuner standby ready signal (Ready), motor is rotating letter
The signal implication each to Fig. 2 system block diagram below such as number (Run) is introduced:
RF On/Off: signal source ON/OFF, when signal source is opened, just can have low-power level signal to export transmitter.
Radiofrequency signal:
Pin: the radiofrequency signal of superconductor cavity incident power；The radiofrequency signal that Pt: antenna is coupled out from superconductor cavity；
TTL input signal (other system exports PLC):
Level OK: when the chamber of superconductor cavity is pressed more than 0.1MV, phase discriminator sends low level signal, and display lamp is bright, when super
When the chamber pressure of guide cavity is less than 0.1MV, sending high level signal, display lamp goes out；Tuned: when amplitude and the phase place of intracavity electric field are divided
Not little Yu ± 1% and when ± 1 °, central control room sends high level signal, is otherwise low level signal；RF On: work as transmitter
Output reaches more than 1W, and transmitter sends high level signal, is otherwise low level.
Relay input signal: (other system exports PLC)
Up/Down limit switch: tuner limit switch, owing to tuner can extrude superconductor cavity, it is also possible to draw
Stretch superconductor cavity, but the extruding born of cavity or range of stretch are limited, need to limit the displacement of tuner tuning arm, limit
Bit switch spacing and non-spacing in the case of, the state of switch is different, when the switch is closed, is output as 0, and the most spacing, tuner can
Continuing to move to, when being output as 1, limited location, tuner cannot continue to move to；READY: stepper motor driver fault-free
Time, relay node closes, and driver exports 0 to PLC, is otherwise 1.
ADC input signal: (other system exports PLC)
Tuner Position: the voltage signal of step motor position sensor, for measuring the position of tuner tuning arm
Shifting amount, exports analog voltage；The input signal of Piezo Input: piezoelectric ceramic high-voltage power source, exports analog voltage；Phase
Potentiometer signal: superconductor cavity incident power and the phase vectors of power extracted from superconductor cavity are poor, and phase signal is the biggest, says
Bright superconductor cavity off resonance is the biggest, and when superconductor cavity frequency is consistent with signal source frequency, phase signal is almost 0 °, is tuning control
System judges whether superconductor cavity is in the important evidence of resonant condition；Vc: superconductor cavity chamber pressure signal, is used for characterizing electricity in superconductor cavity
The amplitude of field and the size of feed-in power.
TTL output signal: (PLC exports other system)
Ready: when tuner actuator (electric system) fault-free, send high level signal, otherwise believes for low level
Number；Run: when motor is in rotary state, send high level signal, is otherwise low level；LLRF OK (LLRF, i.e.
Low Level Radio Frequency, low level control system): when superconductor cavity is in resonant condition, superconductor cavity amplitude simultaneously
Control loop and the electric field amplitude in superconductor cavity and phase place are all controlled (Con trolling index in certain scope by phase control loop
Be respectively ± 1% and 1 °), send high level signal, be otherwise low level.
ADC output signal: (PLC exports other system)
Piezo Output:PLC output analogue signal is to drive power supply for piezoelectric ceramics, for the closed loop feedback of piezoelectric ceramics
Control.
3. software control flow
It is illustrated in figure 4 tunable superconductor resonator Control System Software flow chart, first has to utilize PLC to first power on circulation and refer to
The special module (such as analog input module, analog output module, position control module etc.) to PLC is made to carry out at the beginning of parameter setting
Beginningization, the real-time and accuracy in order to ensure data acquisition arrange analog input module sampling time (generally 20us),
The bandwidth (the most a few kHz) etc. of data transfer time and analog output module median filter, position control module is initialized
The acceleration time of motor is 500ms, deceleration time is 500ms, sent out maximum number of pulses is 2147483647 and initial
Speed is 1000Hz, and uses non-initial point way of search that motor carries out Relatively orientation, sets motor automatic
The hunting zone of search, is usually the Tuner Position numerical value ± 2mV collected at 1# groove position analog input module, i.e. certainly
The frequency range of dynamic search be ± 2kHz (magnitude of voltage of step motor position sensor and the corresponding relation of position are 1um/mV,
Tunable superconductor resonator sensitivity is 1um/kHz), set motor software limit scope Tuner Position numerical value ± 4mV, right
Answering frequency range is ± 4kHz, and in addition, also needing the bias voltage manually arranging piezoelectric ceramic high-voltage power source is 500V.
Detection motor driver READY signal is the most normal afterwards, if READY=1, electric system fault-free is described,
Sending Ready=1 signal to central control room by the TTL output module of PLC, tuning control system is ready, stepping electricity
Machine can enter duty at any time, if READY=0, checks and get rid of driver and electrical fault, continues detection READY and is
No is 1, until READY=1.As READY=1, PLC relay input module (7# groove position and 8# groove position) detection motor position
Whether have mechanical position limitation, in working order under, the mechanical position limitation contact that PLC relay input module is corresponding is normally opened, this contact
State can be stored in (other PLC output module in PLC CPU corresponding memory bits address by substrate bus with the state of 0/1
The signal collected also is in the correspondence memory bit address by substrate bus transfer to PLC CPU or word address, the most in detail
State), if there being mechanical position limitation, contact becomes normally closed, and CPU corresponding memory bits address state becomes 1, enters manual open-loop and controls
Program；If mechanical is spacing, then continue whether detection motor position has software limit, motor software limit value to be just
Write during beginningization in CPU internal memory word address, if there being software limit (the Tuner Position i.e. collected of motor
Numerical value has exceeded software limit value), in CPU, correspondence memory bit address can become 1, now needs to enter tuner on the touchscreen
Parameter arranges interface, carries out software upper limit and arranges and the setting of software lower limit, and the scope of setting is 0-5V, and upper limit place value must
Must be higher than lower limit, the spacing scope of regular software must be smaller than mechanical position limitation scope, and software limit value can be certainly after setting completed
Move renewal numerical value in PLC CPU correspondence memory word address, can continue to return to the main interface of touch screen operation and carry out next step operation,
If without software limit, then continue whether AUTO button on detection touch screen is pressed (the AUTO button internal memory on touch screen and PLC
Memory bits address one_to_one corresponding in CPU), if be pressed, memory bits address corresponding in PLC CPU is 1, then perform automatically
Search utility, if AUTO button is not pressed, memory bits address corresponding in PLC CPU is 0, then perform manual open-loop control
Processing procedure sequence.Generally, the frequency of superconductor cavity can be observed by audiofrequency spectrometer, and when there being line to pass through, superconductor cavity needs
Being operated in resonant condition (i.e. the frequency of superconductor cavity is substantially equal to the frequency of signal source), phase contrast is almost 0 °, when leading to without line
When crossing superconductor cavity, superconductor cavity can be operated in off resonance state (the i.e. frequency departure signal source of superconductor cavity according to the demand of experimenter
Frequency), phase contrast region in addition to 0 ° in the range of ± 180 °.When performing manual open-loop program, according to different realities
Test demand, in order to make superconductor cavity be in resonant condition or off resonance state, first pass through the dialog box in touch screen operation interface
Motor rotation frequency is set and dialog box that tuner parameters arranges in interface arranges sent out umber of pulse, motor rotation frequency scope
For 0-10000Hz, sent out umber of pulse scope is 0-2,147,483,647, and when motor rotates forward, superconductor cavity frequency diminishes,
During motor reversion, superconductor cavity frequency becomes big, and experimenter refers to the frequency of superconductor cavity in audiofrequency spectrometer, and Binding experiment specifically needs
Ask and the most arbitrarily set motor rotation frequency and sent out umber of pulse.After setting completed, detection touch screen in UP button and
Whether only one of which is pressed (the memory bits address in button meaning correspondence PLC CPU in touch screen, lower same) to DOWN button,
If two buttons are not the most pressed or are pressed simultaneously, motor does not starts；When two buttons have and only one of which
When being pressed, CPU corresponding memory bits address is 1, and CPU performs the motor in trapezoid figure program and controls program, PLC position control
The motor rotation frequency that module sets according to experimenter and the umber of pulse (according to experimenter's demand) sent out are sent out to motor driver
Pulse, motor rotates, and the frequency of superconductor cavity changes, and the TTL output module of PLC sends to central control room simultaneously
Run signal (high level), is i.e. pressed when UP button, and motor rotates forward, and superconductor cavity frequency diminishes, when DOWN button is pressed, and electricity
Machine inverts, and superconductor cavity frequency becomes big, continues whether detection motor is sent the umber of pulse of setting afterwards, if be sent,
Specific bit address meeting set in PLC location positioning module, the trapezoid figure program in CPU makes according to the state (being 1) of this address
Motor is automatically stopped rotation, if be not sent, in touch screen, STOP button is pressed, then press with STOP in CPU
The corresponding memory bits address of button is 1, and the trapezoid figure program in CPU module makes startup motor shut down procedure, and motor stops
Rotate, the memory bits address set that UP/DOWN/AUTO button is corresponding in CPU simultaneously, then UP/DOWN/AUTO button all can be certainly
Having moved, EP (end of program), STOP button is emergency stop push button or manual stop button, and no matter tuning control system is in is appointed
What state, as long as STOP button is pressed, motor all can stop operating；Except this situation, when analog input module is adopted
The phase signal that collection arrives is within ± 4 °, and motor also can stop operating.
Perform search utility the most automatically as AUTO=1, the first detection automatic hunting zone of motor is the most correct,
If search upper and lower limit place value current step motor position sensor voltage signal (Tuner Position) ± 2mV
Outside (corresponding search rate scope is ± 2kHz), then resets hunting zone, interface be set in touch screen tuner parameters,
Automatically search upper limit place value (being traditionally arranged to be Tuner Position numerical value+2mV) and automatic search lower limit place value (are typically set
It is set to Tuner Position numerical value-2mV) manually arrange, setting completed continues to detect automatic hunting zone the most correctly,
Until search upper and lower limit place value current step motor position sensor voltage signal (Tuner Position) ± 3mV
Within.
When hunting zone is correct, it is judged that whether RF ON is equal to 1, if RF ON ≠ 1, opening signal source and transmitter are also
Add small-power by the RF power fed-in superconductor cavity of 325MHz frequency, as RF ON=1, continue to judge the simulation of PLC 5# groove position
Whether the phase contrast that input module collects is more than 0 °, owing to superconduction Spoke012 chamber exists mechanical oscillation, when mechanical oscillation goes out
Now, phase signal is not stable direct current signal, but superposition pure oscillation that frequency is 250Hz letter on direct current signal
Number, therefore (this low-pass filtering is to the present invention is directed to add the wave filter with a width of 50Hz in the analog input module of 5# groove position
Being configured in superconduction Spoke012 chamber, filter effect is good).When phase contrast > 0 ° time, illustrate that superconductor cavity frequency is more than signal
The frequency in source, in CPU, ladder diagram instruction makes the constant pulse signal for 1000Hz of PLC position control module output speed to stepping
Motor driver, regulation motor rotates forward and makes superconductor cavity frequency reduce, then phase signal reduces (superconductor cavity frequency the most therewith
The least closer to signal source frequency then phase signal absolute value), now the electric field intensity of intracavity becomes big, and chamber buckling is big, works as chamber
When pressure amplitude degree is more than 0.1MV, the Level OK signal that the TTL input module in PLC collects is low level (i.e. Level OK=
0)；If Level OK=1, i.e. high level, then detect the voltage signal (Tuner of current step motor position sensor
Position) whether there is automatic search software upper limit, if it did not, the SEARCH button pressed on touch screen, motor
Continuing to rotate forward, if having automatic search software upper limit, motor stalls, then showing this time not by superconductor cavity frequency tuning,
Can not carry out automated closed-loop program, PLC CPU internal counter adds 1 automatically, i.e. search superconductor cavity frequency failure 1 time；If PLC
Phase contrast≤0 ° that the analog input module of 5# groove position collects, illustrates the superconductor cavity frequency frequency less than signal source, ladder in CPU
The instruction of shape figure makes the constant pulse signal for 1000Hz of PLC position control module output speed to stepper motor driver, regulation
Motor reversion makes superconductor cavity frequency increase, then phase signal absolute value reduces the most therewith, now the electric field intensity of intracavity
Becoming big, chamber buckling is big, if Level is OK=1, detects the voltage signal (Tuner of current step motor position sensor
Position) whether there is automatic search software lower limit, if it did not, the SEARCH button pressed on touch screen, motor
Continuing reversion, if there being automatic search software lower limit, motor stalls, PLC CPU internal counter is at original numerical value
On the basis of automatically add 1, then show this time the most not by superconductor cavity frequency tuning, failure 1 time again of search superconductor cavity frequency；Search for unsuccessfully
It is improper that reason is that automatic search software bound place value is arranged, i.e. when motor moves in this range, and superconductor cavity frequency
Cannot be consistent with signal source frequency, superconductor cavity cannot resonance.When CPU internal counter numerical value≤3, can manually adjust and automatically search
(maximum magnitude is the voltage signal Tuner Position of current step motor position sensor to rope software bound bit value ranges
Value ± 3mV), press the SEARCH button on touch screen, can again carry out superconductor cavity Automatic Frequency search, if the internal meter of CPU
Number device numerical value ＞ 3, the most automatically search superconductor cavity frequency failure and motor stalls, proceed to manual open-loop and control program, if
If Level OK=0 being detected in search procedure, then RF power feed in superconductor cavity is described and in superconductor cavity, sets up one
The electric field of tentering degree, the SEARCH button that the success of search superconductor cavity frequency, i.e. operator have only to press in touch screen automatically is
Superconductor cavity frequency can be made close with signal source frequency, it is not necessary to carry out artificial manual regulating frequency again.Superconductor cavity frequency of the present invention is certainly
Dynamic function of search can realize capable of being opened by one key tuning and control loop, makes superconductor cavity automatic tracking signal source frequency, it is to avoid too much people
For interfering, it is achieved the automatization of tuning control system, substantially increase tuning efficiency.
If the success of superconductor cavity frequency search, tentatively feed-in power is described in superconductor cavity, weak electric field can have been set up,
CPU trapezoid figure program continues the phase contrast that collects of analog input module of detection PLC5# groove position whether between ± 45 °, as
Fruit does not exists, and i.e. exceedes tuning control system pull-in range, motor stalls, controls program also into manual open-loop.If phase place
Difference is between ± 1 °, then superconductor cavity frequency lock success, i.e. superconductor cavity frequency is basically identical with signal source frequency, in superconductor cavity
Electric field amplitude is maximum, it is possible to more effectively accelerated current, if phase contrast is between ± 45 ° but more than ± 1 °, performs automatically to close
Ring controls program.
When 4 °, < < when 10 °, in PLC CPU, trapezoid figure program is according to speed to motor of the size of phase contrast absolute value for phase contrast
Degree carries out real-time adjustment (motor speed=phase contrast * K1+b), and the control that the position control module of PLC sends according to CPU refers to
The pulse of order output motor frequency real-time change rotates forward to stepper motor driver, motor, makes superconductor cavity frequency diminish, no
The nearly signal source frequency of disconnecting, phase signal the most constantly diminishes, and chamber pressure constantly becomes big, continue detection phase contrast whether ± 1 ° with
In；In like manner, when-10 ° < phase contrast < and when-4 °, in PLC CPU trapezoid figure program according to the size of phase contrast absolute value to motor
Speed carries out real-time adjustment (motor speed=phase contrast * K1+b), the control that the position control module of PLC sends according to CPU
The pulse of instruction output motor frequency real-time change is to stepper motor driver, motor reversal, and continuing detection phase contrast is
No within ± 1 °；The motor speed processing mode of this innovation of the present invention can ensure the close letter that superconductor cavity frequency is the slowest
Number source frequency, prevents from missing owing to motor speed is too fast superconductor cavity resonance point, improves the control accuracy of electric machine control system.
When-6 °, < < when 6 °, motor stalls, piezoelectric ceramics control system carries out Closed loop operation to phase contrast, the CPU of PLC
The phase signal that 5# groove position analog input module collects is sequentially passed through the place of CPU trapezoid figure program PID control instruction
(without PID and Filtering Processing, the phase place obtained after the Filtering Processing of reason and the low pass filter within analog output module
Difference has a lot of high fdrequency component, is not stable direct current signal, and piezoelectric ceramics high pressure also can fluctuate very big, damages piezoelectric ceramics),
In memory address, formula meter is passed through according to superconductor cavity chamber pressure the signal Vc, CPU that PLC12# groove position analog input module collects
Calculate (this magnitude of voltage formula is: magnitude of voltage=phase contrast absolute value * K2+ (Vc/Leff) ^2*K3) to send out to PLC analog output module
Go out instruction so that it is sending the analog voltage after formula calculates, for the high input voltage of high voltage power supply, high voltage power supply should
Analog voltage signal amplifies after 100 times and is added in piezoelectric ceramics two ends, and piezoelectric ceramics makes the frequency shift of superconductor cavity trickleer, point
Resolution is higher, and pid control parameter can arrange respective dialog frame in interface by tuner parameters and arrange, when the response speed of system
Spending very fast and phase contrast fluctuation range hour, the parameter of PID is optimal, and the regulation of this parameter can only be carried out according to commissioning experience,
Different system pid parameters is different；High voltage power supply input voltage value=phase contrast absolute value * K2+ (Vc/Leff) ^2*K3 formula
In the innovation that latter is the present invention process, in CPU, ladder diagram PID instruction and the setting of wave filter are in order to make phase signal
High fdrequency component is cut, and the DC voltage after process is more stable, improves control accuracy, and latter is to offset Lorentz mistake
The feedforward that the humorous superconductor cavity frequency caused changes and introduces, the control essence of phase signal after piezoelectric ceramics system closed loop
Degree reaches ± 0.7 °, wherein K1=167, b=667, when phase contrast+4 °～+10 ° is with-4 °～-10 ° of range, and PLC
The pulse frequency of position control module output, from 0Hz linear change to 1000Hz, can solve K1 and b according to this linear relationship
Value, K2=0.005, this parameter is intended merely to the magnitude of voltage (V) making the numerical value of CPU memory address be converted into high voltage power supply, with mould
The range intending output module is relevant, and for fixed value, K3 is Lorentz coefficient, changes along with the difference of superconductor cavity, needs reality
Measuring, as a example by 7# superconduction Spoke012 chamber, its Lorentz coefficient K3=10, Leff are effective accelerating length, for this superconduction
Chamber Leff=0.111.Wherein step motor control and piezoelectric ceramics control overlapping region is 4 ° of < phase contrast < 6 ° and-6 ° of < phase places
Difference <-4 °.
When 10 °, < < when 45 °, the position control module output motor speed of PLC is the pulse of 1000Hz to phase contrast, and motor is just
Turn；When-45 °, < < when-10 °, the position control module output motor speed of PLC is the pulse of 1000Hz to phase contrast, motor reversal；
The most whether detection phase contrast is between ± 1 °, if phase contrast is at ± 1 °, then frequency locking success, quits a program.Work as superconduction
Chamber is in resonant condition, and superconductor cavity internal electric field amplitude controls to reach ± 1 ° at ± 1% (peak-to-peak value) and electric field phase control accuracy
Time, the TTL output module of PLC sends LLRF OK signal (i.e. LLRF=1) to central control room.
In sum, these are only presently preferred embodiments of the present invention, be not intended to limit protection scope of the present invention.
All within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. done, should be included in the present invention's
Within protection domain.
Claims (10)
1. a tunable superconductor resonator control system based on PLC and touch screen, it is characterised in that include a PLC substrate, this PLC
Substrate be provided with PLC power module, CPU module, position control module, the first analog input module, the second analog input module,
Analog output module, TTL input module；The radio frequency being coupled out in the incident power radiofrequency signal exit of superconductor cavity and superconductor cavity
Signal exit is connected with two inputs of a phase discriminator respectively, and an outfan of this phase discriminator is through a low pass filter and first
Analog input module connects, and another outfan of this phase discriminator is connected with this TTL input module input, the second simulation input mould
Block is connected with tunable superconductor resonator displacement transducer outfan and piezoelectric ceramic high-voltage power source analog voltage input, position control mould
Block is connected with the stepper motor driver pulse input end of tunable superconductor resonator device, analog output module and piezoelectric ceramic high-voltage power source
Analog input end connects, and this CPU module is connected with a touch screen unit；Wherein,
CPU module, is processed for the signal collecting each input module and the parameter inputted by touch screen, generates
Control signal is sent to respective modules；
First analog input module, for gathering phase signal and the superconductor cavity chamber pressure signal of the phase discriminator output of superconductor cavity
Being sent to CPU module, CPU module generates different pulse frequency instructions respectively according to phase signal, superconductor cavity chamber pressure signal
It is sent to position control module；
Second analog input module, for gathering the voltage signal of step motor position sensor, superconduction in tunable superconductor resonator device
In the tuner of chamber, the input signal of piezoelectric ceramic high-voltage power source is sent to CPU module, and CPU module is according to this voltage signal, superconduction
In the tuner of chamber, the input signal of piezoelectric ceramic high-voltage power source generates instruction and is sent to analog output module；
Position control module, generates pulse signal for the instruction sent according to CPU module, controls stepping in tunable superconductor resonator device
Motor rotation frequency, rotation direction；
Analog output module, for the instruction output analog voltage signal that sends according to CPU module to piezoelectric ceramic high-voltage power source,
Control piezoelectric ceramics elongation or the length shortened；
TTL input module, for gathering the signal whether phase discriminator generates more than setting value according to the chamber pressure amplitude degree of superconductor cavity
And it being sent to CPU module, CPU module generates instruction according to this signal and is sent to position control module.
2. the system as claimed in claim 1, it is characterised in that be provided with a low pass filter in analog input module, for right
The filtering of superconductor cavity mechanical oscillation signal.
3. the system as claimed in claim 1, it is characterised in that this CPU module by phase signal through a proportional plus integral control
Device and low pass filter are sent to this analog output module after processing.
4. the system as described in claim 1 or 2 or 3, it is characterised in that CPU module is sequence type CPU module；Also include one
TTL output module, is used for gathering CPU module and rotates according to tunable superconductor resonator device ready signal, fault-signal and motor
Signal is also sent to central control system；This TTL input module, is additionally operable to gather tuning control system tuning signal and transmitter
Open signal and be sent to CPU module；Relay input module, is respectively used to gather step motor position upper limit alarm signal
Number, step motor position lower limit alarm signal and stepper motor driver signal working properly be sent to CPU module.
5. a tunable superconductor resonator control method based on PLC and touch screen, the steps include:
1) according to demand motor rotational frequency in tunable superconductor resonator device, sent out pulse are set by touch screen operation interface
Number；
2) position control module sends out pulse according to the rotational frequency set and sent out umber of pulse to stepper motor driver, drives step
Enter electric machine rotation and change the axial length of superconductor cavity to regulate the frequency of superconductor cavity；
3) whether the detection automatic hunting zone of motor is in the range of setting search, if not in the range of setting search, weighs
The automatic hunting zone of motor is newly set；If in the range of setting search, then opening signal source and transmitter add a merit
Rate；
4) the CPU module detection phase contrast that collects of analog input module of PLC, when phase contrast > 0 ° time, control position control mould
Block output pulse signal, to stepper motor driver, reduces phase contrast；With should phase contrast < when 0 °, CPU module control position control
Molding block output pulse signal, to stepper motor driver, reduces phase contrast, until superconductor cavity chamber pressure is more than setting value；
5) incident power radiofrequency signal and coupling in superconductor cavity in the superconductor cavity that this CPU module detection analog input module collects
Between the radiofrequency signal closed out, whether phase contrast is at ± N1Between °, if it was not then motor stops operating, return step
1)；If this phase contrast is at ± N1Between ° but more than ± N5°, then perform automated closed-loop control program, until phase contrast ±
N5°；Wherein, N1More than N5。
6. method as claimed in claim 5, it is characterised in that this automated closed-loop controls the control method of program and is:
1) N is worked as2° < phase contrast < N1° or-N1° < phase contrast <-N2° time, position control module output constant frequency pulse to stepping electricity
The rotation direction of machine is adjusted, and makes superconductor cavity frequency shift, continuous approach signal source frequency；
2) N is worked as4° < phase contrast < N2° or-N4° < phase contrast <-N2° time, this CPU module according to the size of phase contrast absolute value to step
The rotating speed entering motor carries out real-time adjustment, makes superconductor cavity frequency shift, continuous approach signal source frequency；
3) as-N3° < phase contrast < N3° time, motor stops operating；This CPU module is according to surpassing that analog input module collects
Guide cavity chamber pressure signal Vc calculates an analog voltage, through analog output module, this analog voltage is sent to tunable superconductor resonator device
Piezoelectric ceramic high-voltage power source, control piezoelectric ceramics elongation or shorten length；Wherein, N1>N2>N3>N4>N5。
7. method as claimed in claim 6, it is characterised in that according to speed to motor of the size of phase contrast absolute value
The method carrying out real-time adjustment is: stepper motor speed=phase contrast * K1+b；Wherein, K1=167, b=667.
8. method as claimed in claim 6, it is characterised in that this CPU module calculates this analog voltage formula and is: simulation electricity
Pressure value=phase contrast absolute value * K2+ (Vc/Leff) ^2*K3)；Wherein, K2 is a fixed value, for making the number of CPU memory address
Value is converted into the magnitude of voltage of high voltage power supply；K3 is the Lorentz coefficient of superconductor cavity, and Leff is effective accelerating length of superconductor cavity.
9. method as claimed in claim 6, it is characterised in that be provided with in analog input module for filtering superconductor cavity machinery
The wave filter of the signal that vibration produces.
10. the method as described in as arbitrary in claim 6～9, it is characterised in that the setting value of chamber pressure amplitude degree is 0.1MV；N1=45,
N2=10, N3=6, N4=4, N5=1；Constant frequency pulse is the pulse of 1000Hz；The a width of 50Hz of band of wave filter.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107623979A (en) * | 2017-09-26 | 2018-01-23 | 中国科学院高能物理研究所 | Superconductor cavity failure compensation method, apparatus, equipment and storage medium |
| CN107678338A (en) * | 2017-09-29 | 2018-02-09 | 安德信微波设备有限公司 | A kind of experimental provision of analogue accelerator regulator control system |
| CN116027101A (en) * | 2022-12-15 | 2023-04-28 | 中国科学院近代物理研究所 | On-line discriminating method and system for ignition type of radio frequency superconducting cavity |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08330098A (en) * | 1995-06-05 | 1996-12-13 | Mitsubishi Electric Corp | Superconducting acceleration cavity phase adjust system and correction method for resonant frequency of its cavity cell |
| JPH1167498A (en) * | 1997-08-13 | 1999-03-09 | Mitsubishi Electric Corp | Superconductive acceleration cavity control system |
| US8130045B1 (en) * | 2006-11-17 | 2012-03-06 | Jefferson Science Associate, LLC | Digital self excited loop |
| CN105246242A (en) * | 2015-10-12 | 2016-01-13 | 中国科学院高能物理研究所 | Spoke superconducting cavity tuner |
| CN205862199U (en) * | 2016-07-12 | 2017-01-04 | 中国科学院高能物理研究所 | A kind of tunable superconductor resonator control system based on PLC and touch screen |
-
2016
- 2016-07-12 CN CN201610546229.4A patent/CN106227136A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08330098A (en) * | 1995-06-05 | 1996-12-13 | Mitsubishi Electric Corp | Superconducting acceleration cavity phase adjust system and correction method for resonant frequency of its cavity cell |
| JPH1167498A (en) * | 1997-08-13 | 1999-03-09 | Mitsubishi Electric Corp | Superconductive acceleration cavity control system |
| US8130045B1 (en) * | 2006-11-17 | 2012-03-06 | Jefferson Science Associate, LLC | Digital self excited loop |
| CN105246242A (en) * | 2015-10-12 | 2016-01-13 | 中国科学院高能物理研究所 | Spoke superconducting cavity tuner |
| CN205862199U (en) * | 2016-07-12 | 2017-01-04 | 中国科学院高能物理研究所 | A kind of tunable superconductor resonator control system based on PLC and touch screen |
Non-Patent Citations (2)
| Title |
|---|
| 张瑞等: "《数字化LLRF频调环路的步进电机控制算法设计》", 《核技术》 * |
| 朱正龙等: "《LLRF超导腔体控制系统的测试》", 《原子核物理评论》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107623979A (en) * | 2017-09-26 | 2018-01-23 | 中国科学院高能物理研究所 | Superconductor cavity failure compensation method, apparatus, equipment and storage medium |
| CN107623979B (en) * | 2017-09-26 | 2019-06-28 | 中国科学院高能物理研究所 | Superconductor cavity failure compensation method, apparatus, equipment and storage medium |
| CN107678338A (en) * | 2017-09-29 | 2018-02-09 | 安德信微波设备有限公司 | A kind of experimental provision of analogue accelerator regulator control system |
| CN116027101A (en) * | 2022-12-15 | 2023-04-28 | 中国科学院近代物理研究所 | On-line discriminating method and system for ignition type of radio frequency superconducting cavity |
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