不过，在反馈引发最初的兴奋激情的四十年之后，我们现在已经知道，仅有反馈回路是不足以培育出那些我们最感兴趣的活系统行为的。

But in the forty years since that initial flush of excitement about feedback, we now know that feedback loops alone are insufficient to breed the behaviors of the vivisystems we find most interesting.

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我们不是一个封闭的自我调节系统，而是一个开环回路系统。我们被他人的情感反馈调节、约束、鼓励、斥责、支持和认可。

We are not closed, self-regulating systems, but open loops regulated, disciplined, encouraged, reprimanded, supported and validated by the emotional feedback we receive from others.

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本文设计了基于DSP56F805，由速度和电流反馈控制回路构成的伺服系统实时仿真软件，并给出了其设计和编制过程。

This paper illustrates the emulation software architecture of the system based on DSP56F805. The design and implementation of the speed and current feedback loop are described in detail.

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