Aiming at the inherent problems of non-direct-drive injectors, such as long oil circuits and a difficult precise control needle stroke, based on structure direct-drive injector combined with demand for drive truck diesel injector, this study designs fabricates giant magnetostrictive actuator injectors. A simplified model is established, which mainly simplifies magnetization to facilitate subseq...

In this research, Performance-Based Plastic Design (PBPD) method has been modified according to the proposed method for considering Soil–Structure Interaction (SSI) effects. In the proposed modified method, based on the existing relationships and in order to maintain the simplicity of the PBPD design method, two important parameters have been modified in the PBPD design method. These two parame...

Optical feedback Self-mixing Interferometry (OFSMI) can achieve a high-resolution displacement sensing and measurement by using advanced digital signal processing. However, most existing signal processing algorithms used for OFSMI signals are implemented on a PC by Matlab or other programming languages. In this case, the whole structure of OFSMI sensing system is incompact and the measurement i...

This paper presents the mechanical design, analysis, fabrication, and testing procedures of a new large-range microgripper which is based on a flexible hinge structure. The uniqueness of the gripper is that the gripper arms not only provide large gripping range but also deliver approximately rectilinear movement as the displacement in nonworking direction is extremely small. The large gripping ...

The sensitivity reanalysis technique is an important tool for selecting the search direction in structural optimization design. Based on decomposition perturbation of flexibility matrix, a fast and exact displacement method proposed this work. For purpose, direct formulas computing first-order second-order sensitivities displacements are derived. algorithm can be applied to variety modification...

This paper proposes a design of SMA-based bionic suction cup actuator, the core of which is that the bias spring cooperates with the SMA spring to produce a displacement at the varying temperature caused by the drive current. To characterize the dynamic drive performance of the actuator, the thermody‐ namic model is established by the constitutive model of SMA material of Tanaka series. The sim...