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中文摘要：
提出了∑-△调制编码的一位位流信号PID控制器．首先，介绍了一个结构简单、性能高的内置∑-△调制器和一个位流加法器；然后，以它们为模块提出了位流乘法器、位流积分器和位流微分器，进而用它们组成了位流PID控制器．采用位流信号PID控制器，可以避免在位流信号和多位信号之间的转换；位流PID控制器具有比Nyquist PID控制器更少的硬件电路资源．提出了电机的闭环位流PID控制系统，并进行了仿真．结果表明，设计的电路可行，效能高．
英文摘要：
The paper presents a novel PID controllers by processing directly one-hit over-sampled ∑-△ coded data streams. A second-order digital ∑-△ modulation was intruduced and used as remodulator embedded the circuit for its simple structure. The basic proposed bit streams modules, such as adder, integrator and derivative in the paper, are simple and easy to constitute the PID controllers. The loop-closed system with two PID controllers are presented and compared. The simulations are carrid out and shown that the circuit complexity can be reduced efficiently and the design is feasible.
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