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A novel adaptive object impedance control strategy is presented for dual-arm cooperative humanoid manipulators. A general impedance scheme comprising internal impedance control and object impedance control is adopted, which aims at conferring a compliant behavior both in end-effector level and object lever. The adaptation law for the stiffness and damping of object impedance is derived from Lyapunov...
The channel characteristics of low voltage power-line as telecommunication line have important influence on communication quality, which include impedance characteristics, attenuation characteristics, noise characteristics and so on[1]. The measurement of input impedances is crucial for power-line communication (PLC) because it's an essential parameter for transmission characteristic. According to...
Based on Global Positioning System (GPS), a new method to measure the zero sqeuence impedance of transmission lines by using the two-terminal measured voltage and current data of lines is proposed. The mathematical model of the new method is explained in detail. The hardware structure of the measuring system based on GPS technology is given. Digital simulation results with different frequencies of...
It is known to us, double-ridged horn antenna is one of common and important antenna types, it has been widely used in the EMC, measurement, radar and communication system. A 118GHz double-ridged horn antenna that possesses high performance is designed with the HFSS. VSWR, Gain and radiation pattern of the antenna can fulfill engineering demands based on the simulation of HFSS. Further, this paper...
The microwave characteristics of double-ridge waveguide-microstrip line transition are analyzed and simulated by full-wave analysis software. A couple of double-ridge waveguide-microstrip line transitions have been finished. The experimental test data is in well agreement with simulation result in the range of 6.5~18GHz. The testing result indicates that the waveguide-microstrip line transition has...
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