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A white LED driver chip applied in backlight is proposed, which is based on pulse width modulator. The design of modules such as current reference, oscillator and dynamic slope compensation are discussed in detail. The simulation results, based on CSMC 0.5μm BCD technology, show that the input voltage is in the range of 3.3~5.5V, the output voltage is up to 20V when the output current is between 15...
A global path planning method for complex mobile entity based on geometry algorithm in a strait environment was researched. Aiming at the complex mobile entity, the obstacles and the mobile entity were expressed as different polygons. Based on geometry algorithm, a set of folding linear path candidates were found out firstly. In order to enhance the success rate of path planning, the folding linear...
A novel millimeter-wave LTCC based on three-line stripline structure wideband bandpass filter is presented. Folded structures are employed to realize minimization. Compared with traditional three-line structure, the presented structure can easily expand the passband with using much more compact 3-D structure, and introduce one transmission zero by putting resonators in a folded way, so that the rejection...
The permanent magnet synchronous motor (PMSM) is increasingly playing an important role in alternating current transmission system. Recently, lots of researches have been investigated for the PMSM system without speed and position sensors. A vector-control system of the improved MRAS for PMSM is proposed in this paper. The new Model Reference Adaptive System (MRAS) based on speed positive feedback...
Simulation for excavation of earth-rock work can be close to reality and reflect the details of work progress and improve the efficient of earth-rock materials, if the thinking of modeling based on multi-agent is drew into simulation system for excavation of earth-rock work. It introduces the theory of agent and multi-agent system at first. Then the modeling of system simulation based on multi-agent...
Decoding algorithm complexity influences the application of low-density parity-check (LDPC) codes. This article investigated the Belief-Propagation and improved decode algorithms for a subclass of binary LDPC that can be encoded linearly. Through the comparison of decoding performance, a low complexity one with good performance is preferred. It is shown that the incorporation of LDPC coding techniques...
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