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Logarithmic Arithmetic for Low-Power Adaptive Control Systems

机译:低功率自适应控制系统的对数算法

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摘要

To reduce the power dissipation in adaptive control systems, we propose replacing the exact arithmetic hardware units with approximate ones. As a case study, an adaptive control system for object tracking based on the Kalman filter is implemented in FPGA. A thorough analysis of the Kalman filter's circuitry for real-world object tracks acquired by an aviation radar system proved that adaptive control systems can successfully compensate for the calculation errors introduced by the approximate arithmetic units. The main contributions of this paper are that the introduction of the approximate arithmetic circuits to the adaptive control system (1) preserves the required accuracy and (2) significantly reduces the power dissipation and the size of the adaptive system's circuitry.
机译:为了减少自适应控制系统中的功耗,我们建议用近似单位代替精确的算术硬件单位。作为案例研究,在FPGA中实现了基于卡尔曼滤波器的目标跟踪自适应控制系统。通过对航空雷达系统获取的现实世界目标轨道的卡尔曼滤波器电路的全面分析,证明了自适应控制系统可以成功补偿近似算术单元引入的计算误差。本文的主要贡献在于将近似算术电路引入自适应控制系统(1)保持了所需的精度,并且(2)大大降低了功耗和自适应系统电路的尺寸。

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