知识与财富的链接
历史上《论语》注本甚多,究竟孰优孰劣,已难以缕述。王肃注“子不语怪力乱神”,见于《论语》的最早注本——何晏《论语集解》。王肃认为,“怪力乱神”系四件事情。“怪”是“怪异”,“乱”是“臣弑君,子弑父”,“神”是“鬼神之事”,这是大体正确的。然而,他将“力”解释为“若奡荡舟、乌获举千斤之属”则有待商榷,从当时的思想背景来看,应该将“力”理解为“武力和暴力”。
For large delay problems that exist in industrial process control, we put forward the Improved Model-free adaptive control algorithm. The advantage is that the model does not require specific object, the system can be controlled just by the output and input. By introducing a constraint term, i.e., the change rate of the output with a lag time, into the improved algorithm, the impact of large delay on the system can be reduced. MATLAB and SMPT-1000 simulation verifies that the improved algorithm can control the delay system effectively in the system response speed and stability.