Laser melt injection is a technology for producing metal matrix composite (MMC) layers on tools such as skin-pass rolls by injecting hard particles into laser-induced weld pool. However, low process speeds prevent the application of laser large scale. To overcome this drawback, new approach presented: High-speed (HSLMI) promising method generating highly wear-resistant MMC with high productivit...

A numerical model is developed to simulate the transport phenomena in the flow channel between parallel plates with porous and non-porous (or impermeable) walls. The continuity and momentum equations were solved first, assuming the wall Reynolds number in the range of with the suction or injection of air at a speed equal to the uniform inlet velocity. The results show that at constant inlet and...

A wide-speed-range sensorless control for an IPMSM is deeply studied in this paper, which combines the high-frequency injection (HFI) method and sliding-mode observer (SMO) method. At low-speed range, a rotating voltage signal injected into IPMSM; rotor position can be estimated by HFI based on saliency of IPMSM. high-speed SMO extended back electromotive force (EMF) utilized to estimate positi...

The optimization of injection–production parameters is an important step in the design gas injection development schemes, but there are many influencing factors and they difficult to determine. To solve this problem, paper optimizes injection-production by combining improved particle swarm algorithm study relationship between net present value. In process parameter optimization, has shortcoming...

Idle speed control in a fuel-injection engine system has focused on controlling long-term averages of engine speed, but short-term fluctuations of engine speed have been neglected. The torque differences among cylinders influence the idle stability and cause vibration of the vehicle. In this paper, we introduce two intelligent control systems to reduce the fluctuations of engine speed at idle, ...

Many existing phenomena in nature are considered new design ideas in various fields of industry. Bionics is the application of biological methods and systems found in nature to the study and design of engineering systems and modern technology. By performing bionic review, the researchers found the penguins by delivering air locked under their wings and creating air bubbles, the drag significant...

In this paper we propose a FPGA-based system to speed-up Fault Injection campaigns for the evaluation of the fault-tolerant capabilities of VLSI circuits. An environment is described, relying on FPGA-based emulation of the circuit. Suitable techniques are described, allowing emulating the effects of faults and to observe faulty behavior. The proposed approach allows combining the speed of hardw...