In this paper, the development history and existing shortcomings of washing machines have been briefly described, the operating principle of the current washing machines has been analyzed, user requirements and the di...In this paper, the development history and existing shortcomings of washing machines have been briefly described, the operating principle of the current washing machines has been analyzed, user requirements and the direction of industry development have been found out, and the even-drive washing technology has been studied out through adoption of hyperbolic impeller and suspended inner barrel structure, as well as high-efficiency drive and innovated control design. Thereby the problems with existing washing machines such as heavy twist and wear, uneven wash of clothes, long washing time, and high water and power consumption are solved.展开更多
This paper describes a new approach for designing analog predistorters that can compensate for the nonlinear distortion of laser drivers in a radio-over-fiber （RoF） system. In contrast to previous works, this paper ...This paper describes a new approach for designing analog predistorters that can compensate for the nonlinear distortion of laser drivers in a radio-over-fiber （RoF） system. In contrast to previous works, this paper analyzes the transfer characteristics of CMOS transistors, by combining parallel currents of CMOS transistors in various W/L and negative bias voltages to realize the tunable analog predistortion function. The circuit is fabricated by a standard 0.18txm CMOS technology. The core circuit current consumption is only 15mA and the entire driver circuit works in a band-pass from 1 - 2.2GHz. Experimental results of two-tone tests have shown that with an analog predistortoer the IIP3 of the laser driver circuit has an improvement of 4.91 dB.展开更多
文摘In this paper, the development history and existing shortcomings of washing machines have been briefly described, the operating principle of the current washing machines has been analyzed, user requirements and the direction of industry development have been found out, and the even-drive washing technology has been studied out through adoption of hyperbolic impeller and suspended inner barrel structure, as well as high-efficiency drive and innovated control design. Thereby the problems with existing washing machines such as heavy twist and wear, uneven wash of clothes, long washing time, and high water and power consumption are solved.
基金Supported by the National Natural Science Foundation of China(No.61036002)
文摘This paper describes a new approach for designing analog predistorters that can compensate for the nonlinear distortion of laser drivers in a radio-over-fiber （RoF） system. In contrast to previous works, this paper analyzes the transfer characteristics of CMOS transistors, by combining parallel currents of CMOS transistors in various W/L and negative bias voltages to realize the tunable analog predistortion function. The circuit is fabricated by a standard 0.18txm CMOS technology. The core circuit current consumption is only 15mA and the entire driver circuit works in a band-pass from 1 - 2.2GHz. Experimental results of two-tone tests have shown that with an analog predistortoer the IIP3 of the laser driver circuit has an improvement of 4.91 dB.
