On-line automatic balancing controller of rotating machinery
An automatic balancing and rotating machinery technology, applied in computer control, program control, general control system, etc., can solve problems such as untimely response and low measurement accuracy, and achieve timely debugging, high control accuracy, and fast operation speed.
Inactive Publication Date: 2012-06-27
BEIJING UNIV OF CHEM TECH
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Problems solved by technology
[0005] In order to overcome the shortcomings of the existing offline dynamic balance control system, such as low measurement accuracy and untimely control response of other online control systems, the present invention provides an online dynamic balance control system using vibration signals of rotating machinery
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[0027] Such as figure 1 As shown, the hardware module of the present invention is mainly composed of DSP core module 1, key phase sensor, 2, phase-locked loop program-controlled frequency multiplication module 3, level conversion module 4, vibration sensor 5, signal preprocessing module 6, A / D conversion Module 7, multi-channel control signal generation circuit module 8, balance actuator 9, externally expanded button LCD man-machine interface circuit 10, externally expanded E2PROM module 11, and communication protocol conversion module 12.
[0028] The vibration sensor of the control system picks up the original vibration signal of the corresponding measuring point of the rotating machinery. After the signal is filtered by the signal preprocessing module and anti-aliasing, the voltage translation circuit in the signal preprocessing module converts the bidirectional voltage signal into A / D conversion. single voltage signal required by the device. DSP contains 12 A / D converters...
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The invention discloses an on-line automatic balancing controller of rotating machinery, belonging to the cross field of machinery and control. A DSP (Digital Signal Processor) core module is connected to a balancing executor through a multipath control signal generation module; an output signal interface of a vibration sensor is connected to a signal preprocessing module, and the output signals are input into the DSP core module after being processed by an A / D conversion module; the output signal interface of a keyphasor transducer is connected to a phase-locked loop program control frequency doubling module, and the output signals are input into the DSP core module after being treated by level switching in a level switching module; the DSP core module is further connected with an extended key liquid crystal man-machine interface circuit, an extended E2PROM module and a communication protocol conversion module. For the on-line automatic balancing controller, real-time on-line balancing control is used, and in comparison with an off-line dynamic balance control system, the controller has the advantages of debugging in time, being convenient and flexible, being small in system volume, being quick in response to control, being capable of reflecting actual rotation conditions of the tested system in real time and performing related control enforcement, and the like.
Description
technical field [0001] The invention relates to an online automatic balance controller for rotating machinery, which implements online dynamic balance according to the second-order characteristics of the vibration system and the working principle of a specific balance actuator, and is used to detect and control the online dynamic balance of the rotating spindle system, belonging to The field where mechanics and control intersect. Background technique [0002] In power plants, chemical plants and other large and medium-sized industrial enterprises, rotating machinery, such as turbo generators, fans, pumps, motors, etc., are indispensable large-scale key equipment. However, these rotating machinery may cause excessive vibration due to some reasons, resulting in accidental downtime and huge economic losses. There are many reasons for the vibration of rotating machinery, such as rotor unbalanced vibration, oil film oscillation, rotor non-concentric vibration, random vibration, ...
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Inventor 高金吉赵庆亮江志农王华庆姚剑飞徐亮
Owner BEIJING UNIV OF CHEM TECH