Although the five-axis machine tool presents excellent advantages of high-speed, -efficiency, and -precision machining complex curved surface parts (impeller blade), its actual motion demonstrates nonlinear principle error due to participation rotating axis. Traditional methods, such as linear interpolation, rotation center point (RTCP), optimization, can effectively control errors despite thei...

Iterative subcarrier regularization (ISR) has been recently proposed as a receiver-side remedy for orthogonal frequency division multiplexing (OFDM) nonlinearity. It allows the power amplifier of OFDM transmitters to operate at lower input back-off more efficient uplinks. However, compensation ability cannot align with increasing channel quality, because standard quadrature amplitude modulation...

The majority of techniques that deal with the mitigation of in-phase and quadrature-phase (I/Q) imbalance at the transmitter (pre-compensation) require long training sequences, reducing the throughput of the system. These techniques also require a feedback path, which adds more complexity and cost to the transmitter architecture. Blind estimation techniques are attractive for avoiding the use o...

This paper presents a method of controlling serial robot for milling by an inverse kinematic controller combined with outer PD loop (Inverse Dynamics + controller), calibration and compensation errors in calculating the cutting forces. Because forces are generated at time cutting, contact area between workpiece tool, generalized differential equations motion is always variable difficult to dete...