Received Jun 9, 2017 Revised Nov 20, 2017 Accepted Dec 11, 2017 Gears are important component of the rotational power transmission system and are largely used in variable load and speed applications. The faults on the gear generate excessive vibration which leads to breakdown of the machine. Sensor based methods could diagnose gear faults but proved to be expensive and have limited applications...

Lei Fu 1,2, Yanding Wei 1,2,* ID , Sheng Fang 2, Xiaojun Zhou 2 and Junqiang Lou 3 ID 1 The State Key Lab of Fluid Power and Mechatronic Systems, College of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China; [email protected] 2 Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province, College of Mechanical Engineering, Zhejiang University, Hangzhou 310027, Chin...

With the development of higher voltage power grid, the high and low voltage parallel loops are emerging, which lead to energy losses, even threaten the security and stability of power system. The multi-infeed HVDC configurations widely appearing in AC/DC interconnected power system make this situation even worse. Aimed at energy saving and system security, a decision optimization method for pow...

Condit ion m onitoring (CM) of gearboxes is a necessary act ivit y due to the crucial im portance of gearboxes in power t ransm ission in m ost indust rial applicat ions. There has long been pressure to im prove m easuring techniques and develop analyt ical tools for early fault detect ion in gearboxes. This thesis develops new gearbox m onitoring m ethods by dem onst rat ing that operat ing pa...

The objective of this study was to examine ammonia (NH3) exhaust emissions as a function of different vehicle operating conditions and cycles. A total of eight vehicles with low-emission vehicle (LEV) to super-ultra-low-emission vehicle (SULEV) certification were tested over the Federal Test Procedure (FTP75), a US06 cycle, a hot running 505, a New York City Cycle (NYCC), and a specially design...

This paper presents the modeling of Permanent Magnet Synchronous Motor and its application with Vector Control technique under different operating condition such shaping, cutting, grinding or shearing require constant torque, irrespective of speed. Other application in cranes and conveyors handling constant weight of material per unit time, in pumps, screw conveyors, compressors and ball mills,...

BACKGROUND Hyperventilation has been an integral, but poorly validated part of neuroanesthetic practice. We conducted a two-period, crossover, randomized trial to evaluate surgeon-assessed brain bulk and measured intracranial pressure (ICP) in patients undergoing craniotomy for removal of supratentorial brain tumors during moderate hypocapnia or normocapnia. METHODS Two-hundred and seventy-fi...

Single-walled carbon nanohorns (SWNHs), a new type of carbon nanomaterials, possess excellent catalytic properties, high-purity, and low toxicities, which make them suitable for bioelectrochemical application. Here a biofuel cell anode has been developed by using SWNHs as the support for redox mediator and biocatalyst for the first time. Cyclic voltammetric results show SWNHs promotes the elect...

In Aerospace engineering there are many applications where some values of the design parameters cannot be provided accurately. These values are related either to the geometry (wingspan, length, angles) or to operational flight conditions that vary due to the presence of fluctuations (Mach, angle of attack, air density and temperature, etc....). In this case an alternative strategy is to estimat...