Analysis and Optimization of Dynamic and Static Characteristics of Compliant Amplifying Mechanism

Abstract

Compliant amplifying mechanisms are used widely in high-precision instruments driven by piezoelectric actuators, and the dynamic and static characteristics of these mechanisms are closely related to instrument performance. Although the majority of existing research has focused on analysis of their static characteristics, the dynamic characteristics of the mechanisms affect their response speeds directly. Therefore, this paper proposes a comprehensive theoretical model of compliant amplifying mechanisms based on the multi-body system transfer matrix method to analyze the dynamic and static characteristics of these mechanisms. The effects of the main amplifying mechanism parameters on the displacement amplification ratio and the resonance frequency are analyzed comprehensively using the control variable method. An iterative optimization algorithm is also used to obtain specific parameters that meet the design requirements. Finally, simulation analyses and experimental verification tests are performed. The results indicate the feasibility of using the proposed theoretical compliant amplifying mechanism model to describe the mechanism’s dynamic and static characteristics, which represents a significant contribution to the design and optimization of compliant amplifying mechanisms.

11.1: Invited Paper: High Performance Deep Red OLEDs Using Dual p‐dopants to Control Hole Injection

“…The device structure is shown in Figure 2a. A phosphorescent deep red emitter (DRD) previously reported in [8] was used. All organic layers were vacuum deposited on 6" glass substrates coated with a pre-patterned ITO layer under a vacuum of ~ 10 -6 Torr, and the devices were encapsulated with cover glasses using UV-cured epoxy in an N2 environment.…”

“…OLED 6 achieves a CE of 75 cd/A at CIE (x, y)= (0.707, 0.293), an operating voltage of 3.6 V and a LT95 of >15,000 h at 10 mA/cm 2 . OLED 5, previously reported [8] using a conventional HIL configuration is also listed in Table 3 for comparison. As can be seen here, even with the same red emitter, adopting dual PDs leads to a 27% enhancement in luminance efficiency.…”

“…Although deep red OLED emitters have been reported previously [5][6][7][8], it is still challenging to achieve high luminance efficiency at such long wavelengths. Therefore, in addition to our continuous effort to develop new emitters, we also investigate the potential of device optimization to enhance the efficiency of deep red OLEDs.…”