摘要 :
The electronics world is faced with various challenges when attempting to integrate analog signals with discrete or digital systems. The ADC is not a new concept b y any means, but is still a topic of interest when it comes to tec...
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The electronics world is faced with various challenges when attempting to integrate analog signals with discrete or digital systems. The ADC is not a new concept b y any means, but is still a topic of interest when it comes to technology due to its inevitable necessity in many systems being used today. Power consumption in ICs was always a challenging issue. Most of the technology emphasizes on speed, accuracy, less power consumption. In almost all digital functioning, encoders are mandatory. Decreasing power consumption in an encoder is an area of strong desire. In this paper, we have designed two novel ultra low power encoders for Flash ADC application and also show its comparison with previous encoder available in literature. The work has been done on Tanner tool v15 in 45 nm technology with various DC voltage supplies.
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摘要 :
The electronics world is faced with various challenges when attempting to integrate analog signals with discrete or digital systems. The ADC is not a new concept b y any means, but is still a topic of interest when it comes to tec...
展开
The electronics world is faced with various challenges when attempting to integrate analog signals with discrete or digital systems. The ADC is not a new concept b y any means, but is still a topic of interest when it comes to technology due to its inevitable necessity in many systems being used today. Power consumption in ICs was always a challenging issue. Most of the technology emphasizes on speed, accuracy, less power consumption. In almost all digital functioning, encoders are mandatory. Decreasing power consumption in an encoder is an area of strong desire. In this paper, we have designed two novel ultra low power encoders for Flash ADC application and also show its comparison with previous encoder available in literature. The work has been done on Tanner tool v15 in 45 nm technology with various DC voltage supplies.
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摘要 :
Source encoding algorithm has been widely concerned by the researchers, which aims to improve communication efficiency. In this paper, we put forward a new source encoding algorithm to decrease the redundancies between compiled co...
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Source encoding algorithm has been widely concerned by the researchers, which aims to improve communication efficiency. In this paper, we put forward a new source encoding algorithm to decrease the redundancies between compiled code words in Shannon encoding. With the proposed algorithm, a code word is selected by considering whether the code is the prefix code of the other code words or not. The performance of the new encoding algorithm is investigated for both equal probability of source symbols and non-equal probability condition. Numerical results show that the proposed encoding algorithm can improve the encoding efficiency obviously, especially for the case of great probability differences between source symbols.
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摘要 :
Source encoding algorithm has been widely concerned by the researchers, which aims to improve communication efficiency. In this paper, we put forward a new source encoding algorithm to decrease the redundancies between compiled co...
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Source encoding algorithm has been widely concerned by the researchers, which aims to improve communication efficiency. In this paper, we put forward a new source encoding algorithm to decrease the redundancies between compiled code words in Shannon encoding. With the proposed algorithm, a code word is selected by considering whether the code is the prefix code of the other code words or not. The performance of the new encoding algorithm is investigated for both equal probability of source symbols and non-equal probability condition. Numerical results show that the proposed encoding algorithm can improve the encoding efficiency obviously, especially for the case of great probability differences between source symbols.
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摘要 :
Source encoding algorithm has been widely-concerned by the researchers, which aims to improve communication efficiency. In this paper, we put forward a new source encoding algorithm to decrease the redundancies between compile...
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Source encoding algorithm has been widely-concerned by the researchers, which aims to improve communication efficiency. In this paper, we put forward a new source encoding algorithm to decrease the redundancies between compiled code words in Shannon encoding. With the proposed algorithm, a code word is selected by considering whether the code is the prefix code of the other code words or not. The performance of the new encoding algorithm is investigated for both equal probability of source symbols and non-equal probability condition. Numerical results show that the proposed encoding algorithm can improve the encoding efficiency obviously, especially for the case of great probability differences between source symbols.
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摘要 :
Source encoding algorithm has been widely-concerned by the researchers, which aims to improve communication efficiency. In this paper, we put forward a new source encoding algorithm to decrease the redundancies between compiled co...
展开
Source encoding algorithm has been widely-concerned by the researchers, which aims to improve communication efficiency. In this paper, we put forward a new source encoding algorithm to decrease the redundancies between compiled code words in Shannon encoding. With the proposed algorithm, a code word is selected by considering whether the code is the prefix code of the other code words or not. The performance of the new encoding algorithm is investigated for both equal probability of source symbols and non-equal probability condition. Numerical results show that the proposed encoding algorithm can improve the encoding efficiency obviously, especially for the case of great probability differences between source symbols.
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摘要 :
Speed and position encoders are essential components in electrical drives. High resolution encoders are necessary to obtain acceptable speed control behaviour. Therefore optical encoders are mainly used in servo drives as position...
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Speed and position encoders are essential components in electrical drives. High resolution encoders are necessary to obtain acceptable speed control behaviour. Therefore optical encoders are mainly used in servo drives as position (and speed) feedback. Optical encoders, however, do not provide a robustness comparable to electrical motors - hard environmental influences like mechanical shock and/or vibrations often damage the optical disc inside the encoder. Using resolvers provides better mechanical robustness - their resolution, however, is not sufficient for good speed control behaviour. Capacitive (electrcial) encoders are an attempt to combine good robustness with high resolution. Technical results obtained with a first commercial product encourage to proceed with further research and development in this area.
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摘要 :
We have designed and tested a novel linear actuator system with 1-angstrom closed-loop control resolution and 50-mm travel range. There are two major ultraprecision motion control techniques that have been applied to this actuator...
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We have designed and tested a novel linear actuator system with 1-angstrom closed-loop control resolution and 50-mm travel range. There are two major ultraprecision motion control techniques that have been applied to this actuator: 1. A novel laser Doppler encoder system with multiple-reflection optics. 2. A specially designed high-stiffness weak-link mechanism with stacked thin metal sheets having sub-angstrom driving sensitivity with excellent stability. In this paper, we present the system design and test results of this linear actuator. Applications of this new actuator system are also discussed.
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摘要 :
We have designed and tested a novel linear actuator system with 1-angstrom closed-loop control resolution and 50-mm travel range. There are two major ultraprecision motion control techniques that have been applied to this actuator...
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We have designed and tested a novel linear actuator system with 1-angstrom closed-loop control resolution and 50-mm travel range. There are two major ultraprecision motion control techniques that have been applied to this actuator: · A novel laser Doppler encoder system with multiple-reflection optics. · A specially designed high-stiffness weak-link mechanism with stacked thin metal sheets having sub-angstrom driving sensitivity with excellent stability. In this paper, we present the system design and test results of this linear actuator. Applications of this new actuator system are also discussed.
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