PSM digital circulation controller based on FPGA (Field Programmable Gate Array) and control method thereof

A cycle control and controller technology, applied in the direction of pulse modulation, electrical components, pulse technology, etc., can solve the problems of restricting the performance of the whole machine, processing delay error, high-speed timing of the cycle controller, etc., so as to facilitate system upgrade and networking, easy upgrades, and good monitoring capabilities

Active Publication Date: 2012-05-30
BEIJING BBEF SCI & TECH
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Problems solved by technology

The existing technology is implemented by analog devices. Due to the processing delay error brought by the hardware device itself, it is difficult for the loop controller to accurately meet the requirements of high-speed timing, which has become a bottleneck restricting the performance of the whole machine.

Method used

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  • PSM digital circulation controller based on FPGA (Field Programmable Gate Array) and control method thereof
  • PSM digital circulation controller based on FPGA (Field Programmable Gate Array) and control method thereof
  • PSM digital circulation controller based on FPGA (Field Programmable Gate Array) and control method thereof

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Embodiment Construction

[0033] The foregoing and other technical contents, features, and effects of the present invention will be clearly presented in the following detailed description of the preferred embodiment with the accompanying drawings. Through the description of the specific embodiments, it is possible to gain a more in-depth and specific understanding of the technical means and effects adopted by the present invention to achieve the predetermined purpose. However, the drawings are only for reference and explanation purposes, and are not used to limit the present invention. .

[0034] See image 3 As shown, an FPGA-based PSM digital loop controller in a preferred embodiment of the present invention includes an audio signal processing unit, a control unit, an M bit shift register, and the audio signal processing unit, control unit, and M bit shift register The bit register is constructed by FPGA. The audio signal processing unit converts the audio signal into a DC superimposed audio signal in e...

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Abstract

The invention relates to a PSM digital circulation controller, in particular to a PSM digital circulation controller based on an FPGA (Field Programmable Gate Array) and a control method thereof. The controller comprises an audio signal processing unit, a control unit and an M bit shift register, wherein the audio signal processing unit, the control unit and the M bit shift register are built from the FPGA, the audio signal processing unit equally divides audio signals according to the time and converts the audio signals into direct current superposed audio signals to be sent to the control unit, the output of the control unit is connected with the M bit shift register, and the control unit controls the M bit shift register according to a time sequence and a direct current superposed audio signal amount to send closing and opening signals of a control switch module of 1 or 0 according to sequences of closing and opening firstly as well as opening and closing firstly. The PSM digital circulation controller is realized by adopting the FPGA through a software, has high signal processing accuracy and is realized by using a software algorithm to replace hardware, thereby enhancing performance indexes of a launcher, miniaturizing a hardware system, enhancing the system reliability and being beneficial to upgrading and networking the system.

Description

Technical field [0001] The invention relates to a PSM digital circulator, in particular to an FPGA-based PSM digital circulator and a control method thereof with automatic monitoring and troubleshooting functions for switch modules. Background technique [0002] Improving the efficiency of the whole machine is the development trend of high-power broadcast transmitters. For transmitters with power levels above 100kW, the efficiency of the whole machine has reached about 70%, which is mainly attributed to the pulse ladder modulation (PSM) technology developed in the 1980s. The high-power broadcast transmitter amplifies the input audio signal, and then performs plate-pole modulation at the high-frequency final stage, so that the carrier amplitude changes according to the input signal, and then it is emitted through the antenna. figure 1 It is the schematic diagram of the PSM transmitter. The carrier signal from the exciter is sent to the high-end stage electron tube grid. The high-en...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03K7/00
Inventor 张守忠吕锋
Owner BEIJING BBEF SCI & TECH
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