Rotary non-contact bidrectional synchronous signal and power transmitting system and method
A multi-channel signal, synchronous transmission technology, applied in transmission systems, digital transmission systems, baseband systems, etc., can solve the problems of easy signal interference, difficulty in reverse transmission of real-time analog control signals, and inability to rotate components to provide control, etc. Effects that do not require high environmental conditions
Inactive Publication Date: 2005-03-30
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology
Data transmission using collector rings has disadvantages such as poor reliability, easy signal interference, frequent maintenance and replacement, and structural changes required to increase the number of transmission channels; telemetry and remote control methods are generally used to transfer collected rotating parts However, it is still very difficult to transmit multiple real-time analog control signals in reverse, especially because power transmission cannot be performed, and the energy required for control cannot be provided for the rotating parts, so it is also impossible to perform real-time control on the rotating parts. closed-loop control
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[0020] figure 1 Shown is the functional block diagram of this system, including sensors, drivers, signal amplifiers, power amplifiers, modulators and multiplexers, demodulators and splitters, power supplies, computer controllers, adaptive algorithms, etc. The following are respectively described:
[0021] (1) The sensor and the driver are two functional components. The piezoelectric material used as a functional component is required to have both positive and negative piezoelectric effects, wide frequency response, easy to arrange in composite materials, and good compatibility. Therefore, piezoelectric ceramic materials can be used, which have the above-mentioned characteristics. How the power components are arranged in the rotating part is very important. If they are arranged on nodes or nodal lines, vibration control will not achieve good results. In addition, in order to comprehensively consider the weight, cost and control complexity of the control system, it is necessar...
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The non-contact bidirectional multi-channel signal and power synchronous transmission system comprises integrated signal regualting circuit which is formed from sensor, driver, signal amplifier, power amplifier, modulator, multiplexer, demodulator, splitter and power supply and fixed on the rotating component, integrated signal regulating circuit which is formed from computer data acquisition and control system, demodulator, splitter, modualtor, multiplexer and power supply and placed on the fixed component and non-content signal coupler. Said invention adopts frequency modualtion mode to make signal modualtion, adopts frequency division multiplex mode to make transmission of multichannel signal on one physical passage and directly uses electromagnetic coupling to implement power coupling. It is mainly used for measurement and control of rotating component system.
Description
Technical field: [0001] The non-contact two-way multi-channel signal and power synchronous transmission system and method of the rotary part of the invention belong to the monitoring and control technology of the mechanical structure system of the rotary part. Background technique: [0002] To carry out structural health monitoring and closed-loop real-time vibration active control on the mechanical system of rotating parts, it is necessary to transmit multiple measurement signals, multi-channel control signals and power supplies required for control between the rotating parts and the fixed base. So far, there are mainly two methods for signal transmission of rotating parts: collector ring method and remote measurement and remote control method. Data transmission using collector rings has disadvantages such as poor reliability, easy signal interference, frequent maintenance and replacement, and structural changes required to increase the number of transmission channels; tele...
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IPC IPC(8): G01D3/00H04L25/00
Inventor 陈仁文陈勇刘果熊克张春光
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS