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.
The amplitude and frequency of weak signal is usually detected in strong noise. And the detection method of frequency is less to be researched. In this paper we use Rossler chaotic oscillator and proportional differential control to detect the frequency of the weak signal. At first we control Rossler system to critical state from periodic state to chaotic state. Then the unknown signal is put to the...
In this paper we use fusion technology based on Rossler chaotic oscillator and proportional differential control technology to detect the frequency of the weak signal. The dynamic character of Rossler equation is analyzed and it is immune against the white noise and the interference signal having larger frequency difference with the intrinsic frequency of chaotic oscillator. And proportional differential...
This paper presents a simple voltage control system of AC machines using PWM voltage source inverter with output LC filters. By assuming a motor as a current source, the voltage is controlled by a simple proportional differential (PD) control. The vector control and PD control can be separately controlled in this system. A method for disturbance rejection is also described. The effectiveness of the...
Current control loops is the key element in the control structure of active power filter systems. Among linear control techniques, deadbeat control has widely been accepted as a feasible current control technique as far the DSP implementation of APF is concerned. This control technique that uses high gains on the errors measured at one sample is very sensitive to any error or noise in the measurements,...
Mechanically ventilated premature infants present with fluctuations in ventilation that cannot be addressed by conventional mechanical ventilation with fixed positive pressure and constant frequency. A hybrid algorithm for automatic targeting of minute ventilation and tidal volume by individual or combined closed loop control of the ventilator frequency and peak inspiratory pressure was developed...
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.