New Open Loop Control Improves Linearity of Piezoelectric Actuators

Yu Ting Ma; Liang Huang; Wei Wei Shao

doi:10.4028/www.scientific.net/AMR.211-212.520

Paper Titles

Research on Fuzzing Test Data Engine for Web Vulnerability
p.500

Research on Deep Plowing for Compacted Soil Based on SPH
p.505

Fault Diagnosis of Bearings Based on Time-Delayed Correlation Demodulation and Fuzzy Clustering
p.510

Swing-Up Control by BVP Arithmetic for the Rotational Inverted Pendulum
p.515

New Open Loop Control Improves Linearity of Piezoelectric Actuators
p.520

Vibration Analysis of High-Speed Vehicles under the Condition of Track Random Irregularity
p.525

Principle Analyzing and Structure Designing for Driving and Timing of Fluid Medium Pressure Difference Pipeline Robot
p.530

Elastoplastic Frictional Contact Study on Interference Fits of Compressor
p.535

Research on the Control System of Sorting Machine for IC Chips Based on AVR Microcontroller
p.540

HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 211-212New Open Loop Control Improves Linearity of...

New Open Loop Control Improves Linearity of Piezoelectric Actuators

Abstract:

The piezoelectric material is subject to hysteresis and creep resulting in a nonlinear relationship between the applied voltage and the output mechanical displacement. An approach for compensation of both the hysteresis and creep characteristics of a piezoelectric stack actuator is proposed by utilizing a switched capacitor charge pump. The new charge pump transfers the same amount of charges to the piezoelectric actuator quantitatively, and the actuator will be excited to change its length with constant step. Compared with voltage driving mode, experiments show that both creep and hysteresis of the piezoelectric stack driven by the charge pump are effectively reduced. A hysteresis reduction of 86.10% at 0.01Hz and 94.36% at 5Hz is achieved. At the maximum driving voltage, a creep reduction of 77% is obtained.