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Piezoelectric shunt semi-passive control device for propulsion shafting vibration control and design method

A technology of vibration control and propulsion shaft, which is applied in propulsion transmission, transmission with synchronous propulsion components, mechanical oscillation control, etc. It can solve the problems of complex system and achieve the effect of small impact and small additional mass.

Active Publication Date: 2020-04-10
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the system includes measurement, control, and piezoelectric stack hydraulic micro-displacement amplifier actuators, etc., and the system is complex

Method used

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  • Piezoelectric shunt semi-passive control device for propulsion shafting vibration control and design method
  • Piezoelectric shunt semi-passive control device for propulsion shafting vibration control and design method
  • Piezoelectric shunt semi-passive control device for propulsion shafting vibration control and design method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] Such as figure 1 As shown, the power supply device adopts the induction telemetry power supply device.

[0068] The transmitting end (stationary end 1) is composed of a power supply, a power adapter, a power transmitter, and a power cord. The voltage of the transmitter is 40V DC (that is, the output voltage of the receiving end of the induction telemetry power supply). It can be supplied by batteries, or by inductive or mains power. Usually it can be obtained by inputting 220V AC power to the power adapter. The installation position of the power transmitter from the outer edge of the shaft system is related to the current size: 1000mA current distance is 5-10mm; 500mA current distance is 10-15mm; 250mA current distance is 15-20mm. The coil wound on the shaft is located in the middle of the front surface of the power transmitter probe.

[0069] The receiving end (2) is composed of a coil wound on the rotating shaft. After selecting a suitable installation position o...

Embodiment 2

[0108] On the basis of the first embodiment, the power supply device is changed to a slip ring power supply device.

[0109] The stator (transmitter 1) of the slip ring power supply device is composed of an annular shell, a terminal, a conductive ring, a brush, and a shell fixing device. The rotor (receiving end 2) of the slip ring power supply device is composed of conductive rings and brushes; the rotor of the slip ring power supply device is fixed on the propulsion shafting through interference fit, and is supported by the stator of the slip ring power supply device through precision bearings. The power supply unit can input voltage up to 500V.

[0110] The piezoelectric shunt circuit is fixed to the shaft and rotates with the shaft. First wrap the piezoelectric shunt circuit that rotates with the shaft on the shaft for 2 to 3 layers with adhesive tape to achieve a fixed effect, and finally use a hose clamp or hose clamp to hoop the piezoelectric shunt circuit and fix it o...

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Abstract

The invention provides a piezoelectric shunt semi-passive control device for propulsion shafting vibration control and a design method, and the device comprises a piezoelectric shunt circuit which isconnected to a propulsion shaft of a propulsion shafting and rotates along with a propulsion shaft; a power supply device which comprises a static end and a rotating end, wherein the rotating end is connected to the propulsion shaft, rotates along with the propulsion shaft and is electrically connected with the piezoelectric shunt circuit, and the static end is arranged on the periphery of the rotating end and supplies power to the piezoelectric shunt circuit through the rotating end. Longitudinal and transverse vibration of a propeller can be effectively inhibited by adopting dynamic vibration absorption measures, the additional mass is small, and the influence on shafting misalignment is small.

Description

technical field [0001] The invention relates to the technical field of ship vibration reduction, in particular to a piezoelectric shunt semi-passive control device for controlling the longitudinal and transverse vibrations of a propulsion shafting and its design method and use method. Background technique [0002] There are prominent system natural frequency peaks in the low frequency range of the propulsion shafting, including the longitudinal and transverse bending vibration modes of the shafting system and the vibration mode of the propeller. Since the propeller broadband excitation force is large and will gradually decrease as the frequency increases, and the longitudinal broadband excitation force is 4 to 5 times that of the transverse broadband excitation force, the first-order longitudinal vibration mode and the first-order transverse bending vibration mode of the shafting The peak at the state is the most prominent. If these two peaks can be controlled, the vibratio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F15/00G05D19/02B63H23/32
CPCB63H23/32B63H23/321B63H2023/325F16F15/002F16F2228/063F16F2230/18G05D19/02
Inventor 黄修长华宏星苏智伟黎丰郑智伟
Owner SHANGHAI JIAO TONG UNIV
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