Abstract. Long fiber reinforced thermoplastics (LFT) were processed by in-line compounding equipment with a modified single screw extruder. A pulse stimulus response technique using PET spheres as the tracer was adopted to obtain residence time distribution (RTD) of extrusion compounding. RTD curves were fitted by the model based on the supposition that extrusion compounding was the combination of plug flow and mixed flow. Characteristic parameters of RTD model including P the fraction of plug flow reactor (PFR) and d the fraction of dead volume of continuous stirred tank reactor (CSTR) were used to associate with fiber degradation presented by fiber length and dispersion. The effects of screw speed, mixing length and channel depth on RTD curves, and characteristic parameters of RTD models as well as their effects on the fiber degradation were investigated. The influence of shear force with different screw speeds and variable channel depth on fiber degradation was studied and the main impetus of fiber degradation was also presented. The optimal process for obtaining the balance of fiber length and dispersion was presented.

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To provide UAV’s operator with flight information in real time, according to the property of remote control UAV and human-machine interface design, a flight controller has been implemented. The flight controller used LabWindows/CVI、GL Studio and UDP communication as the main developing platform. The system has been used in projection, and the test had showed that it could meet the need of the GCS(ground control station) of remote control UAV.

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This paper introduces an intelligent and interactive control system (IICS) based on Personal Digital Assistant (PDA) with Windows Embedded Compact System (Windows CE). IICS can configure, monitor and control the wireless digital terminals of digital home. The system consists of a software platform, a controller on PDA and the wireless communication network. Also, Field Programming Gate Array (FPGA) is designed as microcontroller in hardware part to connect PDA and home appliances. In addition, a digital home server is proposed for remote control that PDA can link to the server by GPRS network outside. User interface of IICS provides an efficient way of operating all the appliances in the home. Finally, the experimental results demonstrate that IICS is of high performance for coordinating the home appliances.