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The objective of this paper is to estimate the joint angle and the force from a moving elbow joint based on the SEMG. An AdaBoost with SVM-based compoment classifier is proposed to discriminate different movements based on SEMG of the forearm. Then, the average integral EMG(AIEMG) variables collecting by an EMG measurement device is introduced to estimating joint angles. Through the estimated joint...
Strap-down inertial navigation systems are widely applicable in both military and civil industries. The outputs of gyroscope and accelerometer are polluted by noises. Different form the conventional technologies, the weighting filter presented in this work is superior to both the complementary filter and Kalman filter. Furthermore, to eliminate the negative effects brought by the variation of noise...
Freehand sketching is used widely in human's everyday life for expressing some ideas, especially in notebooks, PDAs and mobile phones. Therefore, the understanding of a sketched picture is the major problem in these devices. One of the most fundamental steps is converting the original digitized pen strokes in the sketch into the intended geometric objects using vertex detection and approximation....
This paper presents an improved 32-bit binary logarithm converter, which is optimized according to the characteristics of Xilinx Virtex4 series FPGA. The implementation in FPGA denotes that our improved method not only costs less resources but also has much higher speed. Meanwhile a novel and simple error correction method is proposed. It reduces the converter error to only one half of the Metchell's...
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