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基于FPGA的谐波传动控制的速度估计(英文)rar
1星 发布者: crazyjackson

2013-09-22 | 1积分 | 683.99KB |  0 次下载

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文档简介
标签: FPGA芯片

FPGA芯片

谐波传动控制

FPGA芯片

速度控制

速度控制

汽车电子

汽车电子

FPGA (Field Programmable Gate Array) devices have emerged as a new type of reconfigurable high-performance computing hardware. Despite their successful applications ina variety of areas, FPGA devices are just about to find their way into the control systems. In this paper, a general velocity estimation solution for on-chip FPGA implementation is presented. Possessing the advantages of both frequency count and period count methods, the proposed solution automatically covers a wide range of velocities. It behaves as a period counter at low velocities and also behaves as a frequency counter at high velocities. Remarkably, the division opera- tion required by most period count methods is averted by using an accumulator to ease the FPGA-based implementation. The developed velocity estimation solution is experimentally compared to a classic frequency count method in terms of both velocity signal smoothness and position tracking control accuracy. Experimental results also reveal that the position control accuracy of harmonic drives is more sensitive to the velocity phase-lag than to the velocity smoothness.

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