Taijiang Peng
Shenzhen University
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Featured researches published by Taijiang Peng.
Ultrasonics | 2015
Taijiang Peng; Hongyan Shi; Xiong Liang; Feng Luo; Xiaoyu Wu
This paper presents a manufacture method for a sandwich structure Ultrasonic Motor (USM) and experiment. Two pieces of rotor clamped on a stator, and a stainless steel disk-spring is bonded on the hollow rotor disk to provide the press by a nut assembled on the shaft. The stator is made of a double-side Printed-Circuit Board (PCB) which is sawed out the ring in the center and connected on the board with three legs. On each side of the ring surface, there are electrodes connected at the same position via through hole. The three layer drive circuit for sine, cosine, and ground signal is connected on the board through each leg. There are many piezoelectric components (PZT) bonded between two electrodes and fill soldering tin on each electrode. Then PZT is welded on PCB by reflow soldering. Finally, rub the gibbous soldering tin down to the position of PZT surface makes sure the surface contacts with rotor evenly. The welding process can also be completed by Surface Mounted Technology (SMT). A prototype motor is manufactured by this method. Two B03 model shapes of the stator are obtained by the finite element analysis and the optimal frequency of the motor is 56.375 kHz measured by impedance instrument. The theoretical analysis is conducted for the relationship between the revolving speed of the USM and thickness of stator ring, number of the travelling waves, PZT amplitude, frequency and the other parameters. The experiment result shows that the maximum revolving speed is 116 RPM and the maximum torque is 25 N mm, when the actuate voltage is 200 VAC.
Ultrasonics | 2015
Taijiang Peng; Xiaoyu Wu; Xiong Liang; Hongyan Shi; Feng Luo
A Langevin transducer can provide longitudinal vibration with larger amplitude while also possessing a greater fatigue life than other types of piezoelectric vibrators. A novel rotary Ultrasonic Motor (USM) was proposed based on the use of a longitudinal transducer (acting as the stator) and a spiral fin rotor: the front cover of the Langevin transducer was designed as a double-layer cup-shaped structure, with the rotor sustained by the inner-layer, and the bearing cover fixed to the outer-layer; the rotor consisted of a shaft and spiral fins which acted as the elastic coupler. It is different from a traditional traveling USM, because the stator provides longitudinal vibration and the rotor generates the elliptical motion. This paper analyzed the motion locus equation of the fin contact points. Additionally, a theoretical analysis was performed in regards to the mechanism and the motors rotor motion characteristics, which demonstrates the relationships among the motors driving force, the torque, the revolution speed, and the motor structure parameters. A motor prototype has been manufactured and surveyed to demonstrate the motor performance. The relationships between the amplitude and the preload on the rotor, the free revolution speed, and the torque of the motor have also been studied.
Journal of Micromechanics and Microengineering | 2016
Xiong Liang; Xiaoyu Wu; Bin Xu; Jiang Ma; Zhiyuan Liu; Taijiang Peng; Lianyu Fu
In this study, using high-speed mechanical drilling on printed circuit boards (PCBs) with two micro carbide drill bits with diameters of 0.15 mm and 0.20 mm, two different PCB micro-cylinder array inserts are fabricated using the micro-ultrasonic powder moulding (micro-UPM) process. According to the temperature curves recorded by a measurement module, when viscoelastic heating dominated, the temperature increasing rate was about three times the rate when interfacial friction heating dominated. From the differential scanning calorimetry and nanoindentation test results, if the ultra-high molecule weight polyethylene (UHMWPE) powder was not preheated, then the micro-cylinder array polymer parts generally consisted of nascent and melt-recrystallised phases as a whole. However, when the micro-cavity and compressed UHMWPE powder grew from room temperature of 28 °C to 85 °C, the two-phase structure gradually developed into a single melt-recrystallised phase. According to single-crystal x-ray diffraction test results, the crystallinity of the base region of the micro-UPM cylinder array part is higher than that of the micro-cylinder region, whereas the grain size of the (1 1 0) crystal surface is larger than that of the (2 0 0) crystal surface.
Circuit World | 2015
Xiong Liang; Bing Li; Lianyu Fu; Xiaoyu Wu; Hongyan Shi; Taijiang Peng; Bin Xu
Purpose – This paper aims to present the main factors affecting the mechanical drilling of the printed circuit board (PCB for short) micro-holes and method of micro-ultrasonic powder molding (micro-UPM for short) by utilizing PCB micro-hole array. Design/methodology/approach – To optimize the drilling process, the paper proposes the on-line monitoring methods for the drilling process including drilling force, drilling temperature, high-speed photography and vibration signals. Taking 0.10 and 0.15 mm micro-drilling as examples, the paper analyzes the drilling process of ultra-small micro-holes. Finally, by taking the PCBs with 0.10 and 0.15 mm micro-hole arrays as the micro-cavity inserts, utilizing ultra-high-molecule weight polyethylene powder with the average particle size of about 150 μm as raw material, two sizes of micro-cylinder array polymer parts are fabricated through micro-UPM process. Findings – PCB micro-cavity inserts with micro-hole arrays fabricated by mechanical drilling has the advantages...
Archive | 2011
Xiaoqin Guo; Rong Cheng; Taijiang Peng; Xiaoyu Wu; Xiong Liang; Shuang-chen Ruan
Archive | 2009
Xiaoyu Wu; Shuang-chen Ruan; Rong Cheng; Xiong Liang; Xiaoqin Guo; Taijiang Peng
Archive | 2012
Xiaoyu Wu; Taijiang Peng; Xiong Liang; Rong Cheng; Feng Luo; Guijian Huang
Archive | 2009
Taijiang Peng; Xiaoyu Wu; Xiong Liang
The International Journal of Advanced Manufacturing Technology | 2017
Feng Luo; Bei Wang; Zhuo-wei Li; Xiaoyu Wu; Feng Gong; Taijiang Peng; Kai-hui Li
Archive | 2011
Xiaoyu Wu; Ping Xu; Rong Cheng; Feng Luo; Xiong Liang; Taijiang Peng