The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This paper identifies two energy saving opportunities of Wi-Fi interface emerged during smartphone's screen-off periods. Exploiting the opportunities, we propose a new power saving strategy, BackPSM, for screen-off Wi-Fi communications. BackPSM regulates client to send and receive packets in batches and coordinates multiple clients to communicate at different slots (i.e., beacon interval). The core...
In this paper, the hub motor driven pure electric vehicle as a prototype, side-slip angle and angular velocity as a controlled variable to design a path tracking controller based on adaptive terminal sliding mode. Through the simulation it can be the design of the adaptive control method based on terminal sliding mode can ensure the vehicle driver's action in 1s after completion of rapid response...
In this paper, the vehicle two-degree of freedom suspension model is taken as the system dynamics model to study the semi-active air suspension system. The sky-hook suspension system is selected as the reference model. Based on the error equation of the body motion, a sliding mode controller is designed by using isokinetic approach law. The traditional sliding mode control uses the switching function...
This paper presents a single-inductor dual-output (SIDO) boost-boost or buck-boost DC-DC converter with charge control. The first output VO1 in our proposed converter can operate in either buck-boost mode (output voltage 2.6V) or boost- boost mode (output voltage 3.3V) according to the ratio of the external feedback resistor, while the second output VO2 only operates at boost mode (output voltage...
A window delay-line analog-to-digital converter (ADC) with programmable resolutions for digitally-controlled switch-mode power supplies (SMPS) used in low-power portable applications is proposed in this paper. Due to its simple, low-power architecture and small silicon area, this ADC can be fully integrated with a digital controller. The proposed ADC quantizes the output converter voltage within a...
This paper presents an automatic welding machine used for the carbon dioxide gas welding, with the mechanical structure designed, and the working process of the automatic welding machine analyzed. With PLC control system design method, we gave the system's control circuit principle diagram and I/O address assignment table, and carried out the design of hardware and software, drew the system's flow...
This paper describes a design of a multi-channel telemetry unit for monitoring distribution switching station based on TMS320F28016 DSP. It details the composition of the hardware block diagram and the design of software. It is capable of measuring multi-channel three-phase voltage and current. In the software, it adopts Fast Fourier Transform to compute multi-channel three-phase voltage, current,...
In this paper, two different architectures of the iSLIP scheduling algorithm are implemented by hardware, and the delay limitation of this algorithm is indicated by comparing their performances. Then a matrix model is proposed for analyzing the reason of delay limitation, and the conclusion is that the pointer conflict causes the large area and delay in essence. Finally, the non-conflict RR scheduling...
A scheme that ATPG-based technique for reducing shift and capture power during scan testing is presented without any influence on fault coverage. This paper presents an X-filling approach called adjacent backtracing fill (AB-fill). After AB-fill approach for at-speed scan testing, all of test patterns have assigned as partially-specified values with a small number of don't care bits (x) as in test...
In order to improve reliability and resist interfere when grid voltage occurs fluctuation and distortion, and further reduce the cost for the grid-connected inverter, the control strategy is presented based on phase lock loop (PLL) and virtual grid flux without grid voltage sensors. The virtual grid flux vector orientation, d-axis current and q-axis current close-loop control are used based on the...
Architecture design and software implementation both contribute to the correctness of ultimate software products. So performance testing is very helpful to test the inconsistence between design and implementation since it is the mix reflection of both sides. Especially in embedded system, with limited resources, execution time is more likely to expose hidden defects. This research presents a time...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.