Research of the Piezoelectric Composite Active Control

2014 ◽  
Vol 1030-1032 ◽  
pp. 1513-1516
Author(s):  
Kun Huang ◽  
Wei Cai Peng ◽  
Zhi Xiong Huang ◽  
Min Xian Shi ◽  
Guang Bing Wan
Keyword(s):  
Active Control ◽  
Cantilever Beam ◽  
Pid Control ◽  
Piezoelectric Ceramic ◽  
Impact Force ◽  
Stopping Time ◽  
Piezoelectric Composite ◽  
Control Coefficient ◽  
Control Change ◽  
Better Than

Instantaneous signal and alternating signals are as driven signals, using PID control, change control coefficient P's size, The stopping time of impact force under instantaneous signal with the piezoelectric ceramic content increases, the stopping time is reduced; after applying active control, the stopping is shorter than that is not applied. After applying the alternating signal to force the cantilever beam, the driving effect of the ceramic sheet is located in a cantilever position A, B, C, the effect of C under controlling is at best. The effect of two driven ceramic sheets is better than that of three driven ceramic sheets, the best control position is B+C.

Researching of the Active and the Passive Damping of Syntactic Foam and Piezoelectric Composite

2013 ◽  
Vol 455 ◽  
pp. 119-122
Author(s):  
Guang Bing Wan ◽  
Zhi Xiong Huang ◽  
Min Xian Shi ◽  
Kun Huang ◽  
Zhao Rui Chen
Keyword(s):  
Cantilever Beam ◽  
Syntactic Foam ◽  
Stopping Time ◽  
Active Damping ◽  
Program Control ◽  
Piezoelectric Composite ◽  
Initial Amplitude ◽  
Passive Damping ◽  
Force Signal ◽  
Time Changes

This paper mainly states that under the PID program control, syntactic foam cantilever beam and piezoelectric composite cantilever beam which are studied with the momentary force and the alternating force signal, in the effective of active damping. The vibration stopping time changes under the momentary force and the amplitude changes under the alternating force signal. Comparing under the same initial amplitude, the amplitude changes of syntactic foam cantilever beam and piezoelectric composite cantilever beam under the active damping.

The method of bolt axial force looseness monitoring and control by piezoelectric ceramics in bolted joint structures

2021 ◽  
pp. 095440622110398
Author(s):  
Xinyao Sun ◽  
Jinggan Shao ◽  
Yang Zhou ◽  
Ci Yuan ◽  
Yang Li ◽  
...  
Keyword(s):  
Finite Element ◽  
Active Control ◽  
Axial Force ◽  
Piezoelectric Ceramic ◽  
Control Method ◽  
Piezoelectric Effect ◽  
Guided Wave ◽  
Clamping Force ◽  
Monitoring And Control ◽  
Wave Signal

Aiming at the problem of bolt looseness in structures, this paper proposes an active control method of axial force monitoring through guided wave and axial force compensation via the inverse piezoelectric effect of a piezoelectric ceramic gasket. Based on the finite element model, the propagation process of guided wave wave in bolted connectors is analyzed, which shows that the transmitted wave energy increases with the increase of bolt clamping force. The analysis of the stress-strain characteristics of the axially polarized and radially polarized piezoelectric ceramic gasket shows that the axially polarized piezoelectric ceramic gasket is more suitable for the control of bolt clamping force. The finite element analysis of the application of piezoelectric ceramic gasket in bolt axial force control shows that the power of guided wave signal increases monotonously with the increase of loaded electric field strength. In accordance with these theoretical methods and research, an active control system for bolt axial force is established in this experiment. The system monitors the power of the guided wave signal in real time and controls the axial force of the bolt by adjusting the intensity of the piezoelectric effect, which achieves an accurate control effect.

Periodicity of Piezoelectric Ceramic Rods on Properties of 1-3 Type Cement Based Piezoelectric Composite

2010 ◽  
Vol 123-125 ◽  
pp. 161-164
Author(s):  
Dong Yu Xu ◽  
Shi Feng Huang ◽  
Chao Ju ◽  
Zong Zhen Zhang ◽  
Xin Cheng ◽  
...  
Keyword(s):  
Piezoelectric Ceramic ◽  
Electromechanical Coupling ◽  
Resonant Mode ◽  
Piezoelectric Composite ◽  
Electromechanical Coupling Coefficient ◽  
Frequency Spectra ◽  
Piezoelectric Composites ◽  
Periodic Composites ◽  
Periodic Composite ◽  
Periodic Arrangement

Periodic and non-periodic 1-3 type cement based piezoelectric composites were fabricated by cut and filling technique, using P(MN)ZT ceramic as functional material and cement as matrix. The influences of periodicity of piezoelectric ceramic rods in the composites on electrical properties of all the composites were discussed. The results show that the non-periodic composites have larger dielectric factor and piezoelectric strain constant than those of the periodic composite. The impedance-frequency spectra analysis indicates that the non-periodic arrangement of ceramic rods can effectively restrict the lateral structural mode of the composite, accordingly reduces the coupling resonant between the thickness resonant mode and lateral resonant mode. The thickness electromechanical coupling coefficient of non-periodic composites is larger than that of the periodic composite. With increasing the non-periodic level of P(MN)ZT ceramic in the composites, the mechanical quality factor of the composites increases gradually. Therefore, 1-3 type cement based piezoelectric composites with different special abilities can be obtained by varying the periodic arrangement of P(MN)ZT ceramic rods in the composites.

scholarly journals Design of an active front steering system for a vehicle using an active disturbance rejection control method

2019 ◽  
Vol 103 (1) ◽  
pp. 003685041988356
Author(s):  
Nan Sang ◽  
Lele Chen
Keyword(s):  
Pid Control ◽  
Disturbance Rejection ◽  
Tracking Error ◽  
Lateral Acceleration ◽  
Active Disturbance Rejection Control ◽  
Vehicle Model ◽  
Active Disturbance Rejection ◽  
Active Front Steering ◽  
Disturbance Rejection Control ◽  
Better Than

A linear vehicle model is commonly employed in the controller design for an active front steering (AFS). However, this simplified model has a considerable influence on the accuracy of the controller. In this article, an AFS controller using an active disturbance rejection control (ADRC) technique is proposed to prevent this problem. The AFS controller was established in MATLAB/Simulink to control the CarSim vehicle model for verification of the simulation. Under the straight-line driving disturbance condition, proportion-integration-differentiation (PID) control and ARDC substantially decreased with respect to the uncontrolled lateral offset and ADRC performed better than PID control. Under the double lane change (DLC) test working condition, the tracking error of the path, yaw rate, roll angle, and lateral acceleration, and error of the driving direction were used to evaluate the vehicle’s controllability and stability. These evaluation indexes were substantially improved by PID control and ADRC; similarly, ADRC was better than PID control. The tracking error of the ADRC in the presence of parameter variance and external disturbance was significantly smaller than that of PID control. The results have verified that the AFS controller based on ADRC can significantly improve vehicle controllability and stability.

Investigation on Actuation Performance of Continuous Fiber Reinforced Piezoelectric Composite Actuator

2019 ◽  
Vol 36 (3) ◽  
pp. 273-284
Author(s):  
X. Ma ◽  
B. Zhou ◽  
S. F. Xue
Keyword(s):  
Cantilever Beam ◽  
Shape Control ◽  
Volume Fraction ◽  
Great Influence ◽  
Piezoelectric Composite ◽  
Driving Voltage ◽  
Fiber Reinforced ◽  
Continuous Fiber ◽  
Fiber Volume ◽  
Analytical Expressions

ABSTRACTIn this paper, a novel continuous fiber reinforced piezoelectric composite (CFRPC) actuator is proposed to improve the stability and reliability of piezoelectric actuators. A piezoelectric driving structure composed of a cantilever beam and the CFRPC actuator is utilized to research the actuation performance of the CFRPC actuator. The expression of the equivalent moment for the CFRPC actuator is obtained using the equivalent load method and electro-mechanical coupling theory. Based on Euler-Bernoulli beam theory, the analytical expression of the deflection for the cantilever beam is derived. The accuracy of the obtained analytical expressions is demonstrated by finite element simulation as well as published experimental results. The actuation performance of the CFRPC actuator is investigated through the analytical expressions of the equivalent moment and deflection. The results show that the key parameters such as driving voltage, fiber volume fraction, cantilever beam height, actuator height, actuator length and actuator position have great influence on the actuation performance of the CFRPC actuator. The CFRPC actuator has good mechanical and electrical properties, and has a wide application prospect in the field of structural shape control.

Single Neuron Adaptive PID Control of the Silicon-Based Integrated Micro Nano-Positioning XY-Stage

2009 ◽  
Vol 60-61 ◽  
pp. 207-212
Author(s):  
Jia Chou Wang ◽  
Wei Bin Rong ◽  
Li Ning Sun ◽  
Xin Xin Li
Keyword(s):  
Pid Control ◽  
Single Neuron ◽  
Displacement Sensor ◽  
Robust Controller ◽  
Dynamical Characteristics ◽  
Repeatability Error ◽  
Control Scheme ◽  
Silicon Based ◽  
Adaptive Pid Control ◽  
Better Than

An integrated micro xy-stage is designed and fabricated for application in nanometer-scale operation and nanometric positioning precision. This device integrates the functions of both actuating and sensing in the same silicon ship and is mainly composed of a silicon-based xy-stage, electrostatics comb actuator and a displacement sensor. In this paper a robust control strategy based on single neuron adaptive PID control theory is developed for silicon-based xy-stage, considering electrical, mechanical, and stiffness models. Single neuron adaptive PID control enables compact realization of a robust controller tolerant of device characteristics variation, types of inherent instabilities, and improving dynamical characteristics. The experimental results verified that the controller is more suitable for the silicon integrated micro xy-stage, under which the settling time is less than 2.5ms and the repeatability error is better than ±24.9nm. In addition, the presented control scheme is simple to implement in practical application.

Boiler Combustion Control System Optimization Strategy

2013 ◽  
Vol 397-400 ◽  
pp. 1064-1068
Author(s):  
Yong Zhang ◽  
Yuan Yao ◽  
Ting Luan
Keyword(s):  
Control System ◽  
Pid Control ◽  
Dynamic Performance ◽  
Control Program ◽  
System Optimization ◽  
Optimization Strategy ◽  
Steam Quality ◽  
Control Scheme ◽  
Better Than ◽  
Fuzzy Adaptive

Optimal control of the boiler combustion system is related to the economy and stability of the entire production process. To the problem that the boiler main product steam quality and the safe operation of the boiler optimization control, the fuzzy adaptive algorithm combined with the traditional PID control in the DCS system is proposed. The method optimizes the control system parameters and improves the control program. The simulation results show that the control scheme is better than the traditional PID control, and has good dynamic performance and stability. Both the boiler outlet steam quality and the security operation of boiler are improved.

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