Vibration and noise reduction method for nuclear power unit pipeline system based on fractional order PID control

Abstract

The invention relates to a vibration and noise reduction method for a nuclear power unit pipeline system based on fractional order PID control. A nuclear power plant typical pipeline system mathematical model established through a dynamic equation can better describe the actual system condition; controller parameters, namely a proportional gain Kp, an integral gain Ki, a differential gain Kd, an integral order lambda and a differential order mu, which enable the system vibration suppression effect to be optimal can be quickly found by using a particle swarm optimization algorithm; compared with an open-loop control method and a closed-loop control method, the vibration suppression of the typical pipeline system of the nuclear power device can be effectively realized by introducing the fractional order PID controllers; after a fractional order PID output feedback controller is introduced, the maximum vibration signal energy can be reduced by 9% on the basis of an open loop. After a fractional order PID state feedback controller is introduced, the maximum vibration signal energy can be reduced by 35% on the basis of an open loop.

Description

technical field [0001] The invention belongs to the field of active vibration reduction of a piping system of a process system, and in particular relates to a method for reducing vibration and noise of a nuclear power plant piping system based on fractional-order PID control. Background technique [0002] Vibration control is an important branch in the field of vibration engineering, which can be divided into passive control and active control. Because passive control does not require external energy, the device structure is simple, and the vibration reduction effect and reliability are good in many occasions, it has been widely used. However, with the development of science and technology, and people's higher and higher requirements for vibration environment, product and structural vibration characteristics, passive control has been difficult to meet the requirements, so active control strategies are more introduced into the process of vibration reduction and noise reductio...

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Problems solved by technology

[0005] After searching, for the complex and high-latitude system of the typical pipeline system of nuclear power plant, the method of using fractional-order PID controller to control its vibration is not currently used in this field

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