Propulsion motor vibration monitoring/signal feedback device and method

A vibration monitoring and signal feedback technology, applied in measuring devices, measuring ultrasonic/sonic/infrasonic waves, computer control, etc., can solve the problem that the vibration data acquisition card cannot meet the needs of active control of motor vibration, and achieve easy upgrade and maintenance, avoid salt The effect of fog corrosion, improving the effect of correction compensation

Pending Publication Date: 2021-07-23
WUHAN MARINE ELECTRIC PROPULSION RES INST CHINA SHIPBUILDING IND CORP NO 712 INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] In view of the above background, in order to solve the technical problem that the existing vibration data acquisition card cannot meet the requirements of active control of motor vibration, one of the purposes of the present invention is to propose a propulsion motor vibration monitoring / signal feedback device

Method used

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  • Propulsion motor vibration monitoring/signal feedback device and method
  • Propulsion motor vibration monitoring/signal feedback device and method

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Embodiment 1

[0027] The embodiment of the present invention provides a propulsion motor vibration monitoring / signal feedback device, which is applied to the active control of ship propulsion motor vibration, and includes a vibration acceleration sensor 1 , an active vibration control board 2 and a host computer 3 .

[0028] Such as figure 1 As shown, the hardware circuit of the active vibration control board 2 includes an analog conditioning circuit 4 , an AD sampling circuit 5 , a digital processing circuit 6 , a communication circuit 7 and a power supply circuit 8 . Embedded software includes data communication program, data acquisition program, FFT transformation program and data post-processing program.

[0029] The vibration acceleration sensor 1 collects the vibration acceleration signal of the motor and transmits it to the active vibration control board 2 through the SPI bus 9, and the vibration acceleration signal output by the vibration acceleration sensor 1 is input to the active...

Embodiment 2

[0045] Compared with the existing vibration acquisition card, the frequency resolution of the device is high, and the vibration frequency analysis range covers the main vibration frequency of the motor. Specifically, for example, the fundamental vibration frequency of a propulsion motor with a magnetic pole pair number of 14 and a rated speed of 180 r / min is about 42 Hz. The existing vibration acquisition card takes into account other applications, the frequency analysis range is usually greater than 0-8kHz, and the highest frequency resolution is greater than 100Hz. The vibration frequency analysis range of the device is 0 Hz to 1 kHz, covering the main vibration frequency range of the motor, and the highest frequency resolution is 0.5 Hz.

[0046] Compared with the existing vibration acquisition card, the device has higher precision when measuring the low-frequency vibration of the motor. Specifically, when the analog conditioning circuit of the device collects time-domain ...

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Abstract

The invention discloses a propulsion motor vibration monitoring and signal feedback device and a control method thereof, which are applied to the field of ship electric propulsion systems. The propulsion motor vibration monitoring and signal feedback device comprises vibration acceleration sensors, a vibration active control panel and an upper computer, the vibration acceleration sensors distributed at different positions of the motor collect vibration acceleration signals of the motor and transmit the signals to the vibration active control board through an SPI bus, and the vibration active control board obtains a frequency spectrum curve of the vibration acceleration signals through an FFT algorithm and carries out frequency domain analysis. The vibration active control panel is connected with the upper computer and the motor unit controller through a CAN bus, receives an instruction from the upper computer and feeds back a motor vibration spectrum to the upper computer and the motor unit controller in real time through the CAN bus. Compared with the prior art, the device realizes automatic monitoring, analysis and signal feedback of motor vibration, is high in measurement precision and low in signal processing and analysis delay, facilitates upgrading and maintenance of a core board, and has high electromagnetic interference resistance and salt spray corrosion resistance.

Description

technical field [0001] The invention relates to the field of ship electric propulsion systems, in particular to a propulsion motor vibration monitoring / signal feedback device and a control method thereof. Background technique [0002] The vibration generated during the operation of the propulsion motor (hereinafter referred to as the motor) is an important source of hull noise. In addition to passive methods such as installing a vibration isolator between the motor and the hull, the motor unit controller adopts a targeted control strategy according to the frequency spectrum characteristics of the motor vibration, which is an important way to reduce motor vibration and hull noise. [0003] At present, a typical working method for controlling motor vibration is to use a dedicated motor vibration measurement system to measure motor vibration, manually read and analyze the vibration spectrum of the motor at a specific speed, determine the corresponding vibration control strategy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01H17/00G05B19/042
CPCG01H17/00G05B19/0428G05B2219/2612
Inventor 李成阳朱磊何忠祥贾志强黎曙
Owner WUHAN MARINE ELECTRIC PROPULSION RES INST CHINA SHIPBUILDING IND CORP NO 712 INST
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