According to the control principle of the vector analysis, this paper establishes Variable-Speed Constant-Frequency (VSCF) doubly fed induction generator's power-angle characteristic equation and static synchroniz...
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Based on the conception of relative-degree of differential geometry theory on nonlinear system, nonlinear disturbance decoupling control on travelling crane electro-hydraulic servo system with dual cylinder was studie...
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ISBN:
(纸本)9780769542966
Based on the conception of relative-degree of differential geometry theory on nonlinear system, nonlinear disturbance decoupling control on travelling crane electro-hydraulic servo system with dual cylinder was studied. Through define relative-degree of disturbance vectors on the nonlinear system, the sufficient condition of system disturbance decoupling was provided. Then a differential geometry decoupling control approach was presented. The actual application results show that the proposed controller has better tracking and synchronization performance than conventional PID controller.
The correct estimated operating cost is a critical factor to determine and choose a heating and air conditioning system. Because thermal load is the base of calculation of operating cost, so the causes, features and i...
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ISBN:
(纸本)9780769542966
The correct estimated operating cost is a critical factor to determine and choose a heating and air conditioning system. Because thermal load is the base of calculation of operating cost, so the causes, features and influencing factors of different loads were analyzed and classified. A new estimating method of annual cost was given;it was on the basis of standard mean area load index and correction factors. The conclusions indicated that improving energy efficiency and reducing fuel price was the route to decrease operating cost. An example calculation proved that this method has a high accuracy.
Research was conducted on vehicle stability control algorithm for four wheel drive (4WD) mini electric vehicle (EV) basing on vehicle dynamics model. The whole vehicle model with eight degrees of freedom was construct...
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The paper realized virtual design by constructing virtual design expert database using reverse engineering methods. Through systematic analysis of common mechatronic system, virtual design problems based on reverse en...
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In order to design a radar servo system with satisfactory response for an air defense missile, the three loop form was chosen, and the frequency domain method was used. The design approach and criteria for the three l...
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ISBN:
(纸本)9780769542966
In order to design a radar servo system with satisfactory response for an air defense missile, the three loop form was chosen, and the frequency domain method was used. The design approach and criteria for the three loop radar servo system was outlined in this paper. With the criteria, a servo system was designed. Then the effect of every loop was analyzed. The results shows that, with the frequency domain method and the design criteria, the designed radar servo system can obtain good response and every loop of the three loop form can't be omitted due to their essential effect.
Nominal system is a part of precise model which not contained the uncertainty of the controlled object and it is the key of the model solution. So it is extremely meaningful to study the optimal solution of the nomina...
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The conception of oriented-process tolerance allocation has been presented to improve the limitation of traditional tolerance research. Oriented-process tolerance allocation means that product can be gained at the min...
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Stereoscopic images have been widely studied in recent years from a technical point of view, but the related quality assessment does not follow this enthusiasm. An objective quality assessment method for serious noise...
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An extreme simple method for digital FIR filter design is introduced. A series of filter formulas are obtained. In comparison with existed methods the method is the simplest except rectangular window method. Filter tr...
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ISBN:
(纸本)9780769542966
An extreme simple method for digital FIR filter design is introduced. A series of filter formulas are obtained. In comparison with existed methods the method is the simplest except rectangular window method. Filter transition bandwidth is smaller than 4.65π/N for filter order N. For the same filter specifications filter order obtained by using the new method is much smaller than by using Kaiser window if minimum stopband attenuation is in the range of 39.5db to 48.5db and corresponding maximum passband ripple is from 0.35db to 0.18db.
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