Analytical modeling, optimization and testing of a compound bridge-type compliant displacement amplifier

Analysis of the displacement amplification ratio of bridge-type mechanism

“…Levertype mechanism is the most common one [11,12]. In addition, bridge-type, four-bar linkage and Scott-Russell mechanisms are also frequently used [13][14][15][16][17]. Comparing to the traditional amplifiers, bridge-type mechanism has a compact structure and a large displacement amplification ratio.…”

Survey on Recent Designs of Compliant Micro-/Nano-Positioning Stages

“…The maximum stroke of an actuator is fixed and limited, especially for PEA, the stroke of which is only 0.1% to 0.2% of the length of the piezoelectric material [54,55]. Once a larger stroke is desired, the available solutions include reselecting the actuator with a larger stroke, using more actuators in series or using a stroke amplifier.…”

“…With a similar structure, Kim et al [65] integrated the compound guiding mechanism to form the self-guided bridge amplifier. Xu et al [54] designed a bridge amplifier with compound design (see Figure 5b) to overcome the low lateral stiffness problem of the original bridge amplifier and derived the mathematical model by geometric relations and elastic analysis. Lee et al [66] proposed a spatial compound bridge amplifier (Figure 5c) to reduce the height of a lifting stage.…”

A Piezo-Driven Compliant Nanopositioning Stage with Large Stroke for Micro/Nano Manipulation

“…[6] Another type of commonly used amplifier refers to bridge-type amplifier, which has compact size, symmetric structure and sufficient amplification ratio. [4,7] Unfortunately, the nanopositoning stages based on bridge-type amplifier have relatively poor dynamics. In addition, duo to a lateral displacement at the driving end of the stage increases with the increasing of the input displacement, a decoupling mechanism is needed for protect PZT from the lateral forces and bending torques.…”