id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
fumecheng-7594	Nguyen, Xuan-Ha; Nguyen, Hung-Anh	INVESTIGATION OF INFLUENCES OF FABRICATION TOLERANCES ON OPERATIONAL CHARACTERISTICS OF PIEZO-ACTUATED STICK-SLIP MICRO-DRIVES	2022	18	.pdf	application/pdf	7660	387	54	A. H. NGUYEN Table 2 Standard parameters dependent on the radius of hemispheres used in simulations [20] Parameters 𝑅 = 0.25 𝑚𝑚 𝑅 = 0.5𝑚𝑚 𝑅 = 1𝑚𝑚 Stiffness of actuators - 𝑘𝑝 (𝑁/𝑚) 4 × 106 6 × 106 6.5 × 106 Damping ratio - 𝑐𝑝 (𝑘𝑔/𝑠) 10 14 16.3 Mass of actuator - 𝑚𝑎 (𝑔) 1.1 × 10−5 1.6 × 10−5 2.2 × 10−5 Preload range - 𝐹𝑝 (𝑁) 0.1 ÷ 0.5 0.1 ÷ 0.8 0.1 ÷ 1.5 Actuation amplitude - 𝐴 (𝑛𝑚) 96 160 200 Table 3 Parameter variation depending on the fabrication and assembly tolerance Parameter Position Standard value Varied value Angle between two actuator blocks on one side of the runner (𝛿) Type-A side Type-B side 𝛿 = 90° 𝛿 = 80°/100°, 70°/110 Key words: Microrobotics, Stick-slip micro-drivers, Piezo actuators, Contact mechanics, Dynamic simulation, Friction Received March 11, 2021 / Accepted April 12, 2021 Corresponding author: Xuan-Ha Nguyen Department of Machine Design and Robotics, School of Mechanical Engineering, Hanoi University of Science and Technology, Hanoi 112452, Vietnam E-mail: ha.nguyenxuan@hust.edu.vn mailto:ha.nguyenxuan@hust.edu.vn 110 H. X. NGUYEN, A. H. NGUYEN	cache/fumecheng-7594.pdf	txt/fumecheng-7594.txt