Superconductive cavity tuning control system and method based on PLC and touch screen
A superconducting cavity tuning and superconducting cavity technology, applied in general control systems, control/regulation systems, program control, etc., can solve the problem of a single required quantity of resources, complicated wiring of analog devices, and inapplicability to multiple tuner control, etc. problems, to achieve the effect of reasonable utilization of resources, shortened development cycle, and rich types of modules
A superconducting cavity tuning and superconducting cavity technology, applied in general control systems, control/regulation systems, program control, etc., can solve the problem of a single required quantity of resources, complicated wiring of analog devices, and inapplicability to multiple tuner control, etc. problems, to achieve the effect of reasonable utilization of resources, shortened development cycle, and rich types of modules
CN106227136AInactive Publication Date: 2016-12-14INST OF HIGH ENERGY PHYSICS CHINESE ACADEMY OF SCI
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[0060] In order to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0061] The superconducting cavity tuning control system uses PLC as the core controller to establish a high-frequency electric field in the superconducting high-frequency cavity, and use the high-frequency phase difference obtained by the phase detector to guide the stepping motor and piezoelectric ceramics to adjust the resonance frequency of the cavity. Feedback control, which forms a man-machine interface with the touch screen, can automatically capture and lock the frequency of the cavity, the phase control accuracy can reach ±0.7°, and the corresponding frequency control accuracy is ±4Hz. The tuning sensitivity of the superconducting cavity is 1.1kHz / um, and the phase sensitivity is 5nm / 1°, the corresponding relationship between phase and frequency is 5...
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The invention discloses a superconductive cavity tuning control system and method based on a PLC and a touch screen. The system comprises a PLC substrate. A PLC power module, a CPU module, a position control module, a first simulation input module, a second simulation input module, a simulation output module and a TTL input module are arranged on the PLC substrate. An incident power radio frequency signal lead out end of a superconductive cavity and a radio frequency signal lead out end coupled in the superconductive cavity are connected with two input ends of a phase discriminator. The output end of the phase discriminator is connected with the first simulation input module and the input end of the TTL input module. The second simulation input module and the output end of a displacement sensor are connected with a simulation voltage input end of a piezoelectric ceramic high-voltage power supply. The position control module is connected with a pulse input end of the stepper motor driver. The simulation output module is connected with a simulation input end of the piezoelectric ceramic high-voltage power supply. The CPU module is connected with the touch screen unit. According to the invention, frequency of the superconductive cavity can be automatically searched, captured and locked.
Description
technical field [0001] The invention relates to a superconducting cavity tuning control system and method based on a PLC and a touch screen, and belongs to the technical fields of particle accelerators and low-temperature superconductivity. Background technique [0002] In order to continuously accelerate the beam passing through the superconducting cavity, it is necessary to lock the resonant frequency of the superconducting cavity at the working frequency, and each cavity must be equipped with a set of tuners and tuning control systems that can continuously adjust the cavity frequency. Only in this way can high-frequency power be fed into the superconducting cavity to accelerate the beam. Among them, the main purpose of the tuning control system is to compensate or damp the frequency change of the superconducting cavity caused by factors such as helium pressure fluctuations, beam load effects, Lorentz detuning and microphone effects during the operation of the superconduct...
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Patent Timeline
14 Dec 2016
Publication
CN106227136A
- IPC
- G05B19/05
- CPC
- G05B19/05; G05B2219/25268
- Inventors
- 刘娜; å™æ¯…