专业

用 ,也是与高等数学接轨的有力点 . 例 5 证明贝努利  Bernoulli 不等式 :如果 x 是实数 ,且 1x , 0x ,n 为大于 1的自然数 ,那么  11nx nx   . 证明 令    11nf x x nx   ,则     11 nf x n x n  ． 1) 当 10x   时 ,0 1 1x   ,而

goods. At present the open style numerical control system system structure standard, the correspondence standard, the disposition standard, the movement platform, the numerical control system

g, drilling. At the same time a highspeed machine tool spindle system and highspeed feeding system, high stiffness of the main characteristics of highprecision targeting and 5 highprecision

idth Bi, then extracts the processing to need the trough cavity all knives position path to launch the curve. cam path middle line processing coordinates transformation method Above the putation is

y the operator. A skilled operator should be capable of recognizing the tools to be used for a particular machining operation especially when an operation schedule and tool detail sheet has been

／ C systems． The coded instructions on the tape consist of sections of punched holes called blocks． Each block represents a machine function， a machining operation， or a bination of the two． The

l engine bed product quality crucial does the numerical control engine bed display its high performance, the high accuracy and the high efficiency, and obtains the good benefit, the key is decided by

tionability the numerical control serial production factory. Lanzhouelectrical machinery plant, Central China numerical control and so onone batch of servosystems and servo electrical machinery

er peripherals to create an ideal solution for control system applications. The following characteristics make the TMS320 family the right choice for a wide range of processing applications: Very

or, this design of a dualmode Fuzzy2PI control, As shown in figure 2, and its design thinking is。 when the pressure is greater error when using fuzzy control, to obtain good transient。 When the