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Method and device for eliminating amplitude-phase control interference in self-excitation mode

A technology of amplitude-phase control and phase control, which is applied to electric controllers, controllers with specific characteristics, electrical components, etc. to avoid crosstalk in amplitude-phase control and improve control accuracy and stability.

Inactive Publication Date: 2010-11-10
CHINA INSTITUTE OF ATOMIC ENERGY
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Problems solved by technology

[0005] The purpose of the present invention is to eliminate the problem of amplitude and phase control crosstalk

Method used

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  • Method and device for eliminating amplitude-phase control interference in self-excitation mode
  • Method and device for eliminating amplitude-phase control interference in self-excitation mode
  • Method and device for eliminating amplitude-phase control interference in self-excitation mode

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Embodiment Construction

[0026] This embodiment provides a method and device for eliminating amplitude-phase control crosstalk by using a self-excited mode in a low-level control system of a radio frequency acceleration system of a 100 MeV high-current cyclotron.

[0027] The RF acceleration system of the 100MeV high-current cyclotron includes: a frequency source with high stability and frequency continuously adjustable, two 100kW RF power sources, two independent resonant cavities and two low-level control systems.

[0028] The reference signal of the 100MeV radio frequency system is generated by Direct Digital Synthesis (Direct Digital Synthesis, DDS) technology, and the reference clock of DDS is a highly stable 10MHz constant temperature crystal oscillator (Double Oven Controlled Crystal Oscillator). The reference clock generates a 150MHz main clock signal through a phase-locked loop (Phase Lock Loop), and drives 4 channels of DDS to work at the same time. The edge of the driving clock signal trigg...

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PUM

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Abstract

The invention belongs to the technical field of the limitation of noises or interference, and particularly relates to a method and a device for eliminating amplitude-phase control interference in a self-excitation mode. The device comprises an amplitude control loop, a phase control loop and a frequency control loop, wherein the amplitude control loop stabilizes an amplitude value of a radio frequency system; and the phase control loop controls the phase of an accelerating field of a radio frequency cavity. The method and the device are characterized in that: the phase control loop is used for stabilizing the frequency of the radio frequency system by a self-excitation loop. Through the technical scheme provided by the invention, the amplitude-phase control interference can be effectively avoided, and the control accuracy and stability of a radio frequency control system of a high-intensity cyclotron can be improved.

Description

technical field [0001] The invention belongs to the technical field of limiting noise or interference, and in particular relates to a method and a device for eliminating amplitude-phase control crosstalk in a self-excited mode. Background technique [0002] The interaction of electromagnetic fields caused by different structures in the circuit in the same area will produce crosstalk, that is, the energy on one line is coupled to other lines. Crosstalk has two adverse effects: First, crosstalk will change the performance of a single transmission line in the bus, such as transmission line characteristic impedance and transmission speed, etc., and these will have a certain impact on system timing and signal integrity issues; secondly, Crosstalk inductively couples noise onto other transmission lines, which further degrades signal integrity, resulting in less noise margin. [0003] In particular, for the high-current cyclotron system, the control system belongs to the control o...

Claims

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Application Information

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IPC IPC(8): H05H7/00H05H7/02H05H13/00G05B11/42
Inventor 殷治国侯世刚夏乐
Owner CHINA INSTITUTE OF ATOMIC ENERGY
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