Modeling of Hysteresis in Piezoelectric Actuator Using Linear Play Operator Adaptive Filter

2015 ◽  
Vol 645-646 ◽  
pp. 957-962
Author(s):  
Rui Xiong ◽  
Xiang Dong Liu ◽  
Feng Min Shan
Keyword(s):  
Piezoelectric Actuator ◽  
Adaptive Filter ◽  
Least Mean Square ◽  
Filter Model ◽  
Experiment Platform ◽  
Transversal Filter ◽  
Hysteresis Modeling ◽  
Least Mean Square Algorithm ◽  
Play Operator ◽  
Adaptive Transversal Filter

Piezoelectric actuator (PEA) is widely applied in micro/nanopositioning system. However, its inherent hysteresis limits its application. Modeling of hysteresis plays an important role in solving this problem. Linear play operators (LPO) adaptive hysteresis model is introduced in this paper. LPO operators are used to replace delay operators of adaptive transversal filter to compose a new serial structure of adaptive transversal filter model, and LMS (Least Mean Square) algorithm is used to adjust the weight values. As hysteresis loop of piezoelectric actuator is asymmetric and LPO operator is symmetric, a modified LPO (MLPO) adaptive filter is proposed for asymmetric hysteresis effect. At last, the two LPO filters are applied to model hysteresis characteristic of Piezoelectric actuator, and the modeling effect is verified via a micro-positioning system experiment platform based on Piezoelectric actuator. Experimental results show that the modified LPO filters can achieve better accurate hysteresis modeling.

scholarly journals FPGA based least mean square algorithm for noise cancellation in communication system

2018 ◽  
Vol 7 (3.3) ◽  
pp. 165
Author(s):  
Praveen Reddy ◽  
Dr Baswaraj Gadgay
Keyword(s):  
Adaptive Filter ◽  
Communication System ◽  
Noise Cancellation ◽  
Mean Square ◽  
Least Mean Square ◽  
Distributed Arithmetic ◽  
Negative Effect ◽  
Least Mean Square Algorithm ◽  
Design Comparison

We present modified Distributed Arithmetic (DA) based architecture for LMS Adaptive filter which has improved the throughput of the filter also area and power has been comparatively been reduced. As we know, the adaptive filter uses continuous recalculation and generation of new coefficients will generate the negative effect on the use of algorithm. We have used a special temporary LUT addressing technique has overcome the issues resulting in better performance and good results. In this paper, we have discussed about the adaptive filter and implementation of DA adaptive filter and also discussed the results obtained from the design. Comparison with traditional de-sign has also been done to show the effectiveness of the algorithm.   

scholarly journals Rejection of PSK interference in DS-SS/PSK system using adaptive transversal filter with conditional response recalculation

2003 ◽  
Vol 1 (1) ◽  
pp. 103-109 ◽  
Author(s):  
Zorica Nikolic ◽  
Bojan Dimitrijevic ◽  
Nenad Milosevic
Keyword(s):  
Adaptive Filter ◽  
Error Probability ◽  
Interference Rejection ◽  
Conditional Response ◽  
Transversal Filter ◽  
Complex Adaptive ◽  
Adaptive Transversal Filter

PSK interference rejection using complex adaptive filter with conditional response recalculation in DS-SS/PSK system is considered in this paper. New adaptive filter decreases error probability for several orders of magnitude when compared to the standard adaptive transversal filter.

Improved least mean square adaptive filter algorithm

2013 ◽  
Vol 32 (7) ◽  
pp. 2078-2081
Author(s):  
Cheng-xi WANG ◽  
Yi-an LIU ◽  
Qiang ZHANG
Keyword(s):  
Adaptive Filter ◽  
Mean Square ◽  
Least Mean Square
Sign in / Sign up

Export Citation Format

Share Document