Design, Analysis and Experiment of a Bridge-Type Piezoelectric Actuator for Infrared Image Stabilization

Abstract

Piezoelectric actuators are widely used in the optical field due to their high precision, compact structure, flexible design, and fast response. This paper presents a novel piezoelectric actuator with a bridge-type mechanism, which can be used to stabilize the images of an infrared imaging system. The bridge amplification mechanism is used to amplify the actuation displacement, and its structural parameters are optimized by the response surface method. The control strategy of the image stabilization system is formulated, and the overall structure of the infrared image stabilization system is designed according to the principle of image stabilization and the control strategy. The prototype was fabricated and verified by a series of experiments. In the test, the laminated piezoelectric ceramics are used as the driving element, and its maximum output displacement was about 17 μm under a voltage of 100 V. Firstly, the performance of the piezoelectric amplification mechanism was tested, and the maximum displacement of the piezoelectric micro-motion mechanism was 115 μm. The displacement amplification ratio of the mechanism was 5.7. Then, the step distance and response time of the micro-displacement mechanism were measured by inputting the stepping signal. When the input voltage increased to 3 V, 5 V, and 7 V, the stepping displacements of the mechanism were 2.4 μm, 4.1 μm, and 5.8 μm. Finally, the image stabilization effect of the designed mechanism was verified by imaging timing control and feedback signal processing.

A novel stick-slip piezoelectric actuator is developed based on a parallelogram flexible drive mechanism to minimize shear force

“…Directacting piezoelectric actuators can achieve nanoscale positioning resolution, but typically have a working stroke of only a few micrometers [14]. To enhance its travel, the structure incorporates amplification mechanisms such as the lever mechanism [15], bridge mechanism [16], and Scott-Russell mechanism [17]. However, the amplification mechanism complicates the structure, and the amplified travel typically spans tens of micrometers.…”

An Active Vibration Isolation and Compensation System for Improving Optical Image Quality: Modeling and Experiment

“…Zhao [ 35 ] et al studied a variable rigid shock absorber using reinforcement learning optimization stiffness control for remote sensing image satellites to improve image quality. Sun et al [ 36 ] proposed a bridge-type mechanism with a piezoelectric actuator for stabilizing the images of infrared imaging systems, and the image stabilization performance of the designed mechanism was verified through image sequence control and feedback signal processing. In summary, image quality can indeed be raised by additional optical stabilization control algorithms on the basis of passive VICSs.…”

Editorial for the Special Issue on Piezoelectric Transducers: Materials, Devices and Applications, Volume II

“…This is the second volume of the Special Issue focused on piezoelectric transducers, covering a wide range of topics, including the design, fabrication, characterization, packaging, and system integration or final applications of mili/micro/nano-electro-mechanical systems-based transducers, featuring piezoelectric materials and devices. This new volume has compiled a total of 14 papers, with the latest advances in areas such as hysteresis compensation [1][2][3], cylindrical piezoelectric transducers [4], flextensional devices for underwater applications [5], electromechanical transformers [6], actuators for image stabilization [7], electric current sensing [8], rotary and linear ultrasonic motors [9,10], locomotion of miniature robots [11], displacement amplification structures [12] nanoparticles with piezoelectric properties [13], and a review paper on aerospace applications [14].…”