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Feature extraction, which is one of the basic tasks for pattern recognition, has often high computational cost and large memory usage. In this work, we propose a pixel-based pipeline hardware architecture for Haar-like feature extraction, implemented in 0.18 μm CMOS technology with 1.76 mm2 core area. Pixel-input speed relies on the working frequency of the image sensor so that features are extracted...
This paper tackles a 3D inverted pendulum stabilization problem, where the pendulum is attached on a quadrotor. We first derive the mathematical model of the quadrotor-pendulum system based on the Euler-Lagrange equation. Then, with hope for better control performance than traditional linear quadratic optimal control by efficiently using the vertical input, the bilinear approximation model is built...
This paper considers inverse optimal control design for an inverted pendulum with three-dimensional movements. We show that the inverted pendulum model can be transformed into the bilinear system via a quadratic approximation and coordinate/input transformations. Then, the inverse optimal controller proposed in one of our previous works is applied to the resulting bilinear system. We next show that...
The passive dynamic control (“PDC”) is a mechanical system control method based on an inherently safe design. It positively uses a brake having variable characteristics. In this paper, the PDC is applied to a two-link pneumatic artificial muscle manipulator. First, new mechanism in which two arms are controlled separately is proposed, and its control method based on operation of MR brakes is described...
This paper discusses cyber attacks and faults diagnosis method for networked electrical power systems. In this paper, a power system is divided into some areas, and then, some parameters are estimated by Kalman filter in each area. Then we propose a diagnosis method by using called state and output fault diagnosis matrices which are composed of the estimated values, output matrix and so on. These...
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