【正文】 herefore still was called the puter numerical control. In 1990, PC machine (personal puter, domestic custom had called microputer) the performance has developed to the very high stage, may satisfiedly take the numerical control system core part the request. The numerical control system henceforth entered based on the PC stage. In brief, the puter numerical control stage has also experienced three generations. Namely 1970fourth generation of miniputer。Want to raise the exercise of slippery pedestal steady to need to increase system of rigid, the main measure lies in the physical volume which lets up an oil 176。Result, slip a pedestal of ex blunt the quantity adjusts system to soon want than the tradition small be close to 20%.It is thus clear that adoption from adjust to carry on the back a Chuang to adjust soon system conduct and actions to drive the slippery pedestal of system to have good characteristic in the aspects of hurtling before repress, among them from adjust to carry on the back to press valve to have very your work to use. Four, slip the exercise of pedestal steady While regarding as a load period of used for the slippery on the stage variety(if the Xian pares to process a circumstance), the sport speed which slips a pedestal wants to produce certain。s matching diagram is an effect to flow diagram, it is the energy which presses system to deliver a way, take actual structure as foundation, the function which uses concentration parameter the of sub system relates to an abstract earth39。s etc. to constitute from the text in use of sign asfollows: S 1flow a source, then adjust soon valve export discharge。s liquid flows through to change toward the valve and adjust soon valve juniors into the oil urn of 2 have no a pole chamber, push slippery the set be left shift。In the meantime, oil urn the pressure oil that if there is pole chamber, eject through from adjust to carry on the back to press valve and change to flow to return to fuel tank toward the this process, two oneway valves with overflowed to flow valve and always don39。 Selthe slippery set glide friction Selthe slippery set glide friction C5, C6the etc. effect liquid of tube road permit: R5, R7take care of an etc. of road effect liquid Zu。s surface to show for the Zu a dollar Rand permits sex dollar C and sensitive faculty dollar I of three kinds of 3 function thiskind of method sets up a mold physical concept clear, bine the appearance space analysis method can pare to accurately describe with analysis line system, that method is in the hour the area study plications the line system dynamic state characteristic not of a kind of valid of method. According to from adjust to carry on the back to press to adjust soon the main characteristic ofeach ponent of system and set up mold rule[1], get figure 3 show of the power key of system match half arrowhead on the key in diagram means that the power fly to, 2 which constitute power change the quantity be a dint to change to measure(hydraulicpneumatic P or function dint F) and flow to change to measure(discharge q or speed v).O crunode means in the system to belong to merge a conjunction, each dint of key changes to measure equality but flows to change to measure it with is zero。 order to process the request of quality at assurance, have to possibly let up its speed motion out from the convenience discussed a problem, suppose a load by the sine wave regulation variety, get thus of numeral imitate a true result such as figure 5 showed from this that system and traditionally adjust soon system to have same variety regulation with very close of reason is that the variety range of load isn39。from the structure of the system, the oil urn has a pole chamber to have with the row pipeline one very big capacity and show such as the figure 6 of the existence delay with Shuai reduce from adjust to carry on the back a function of press the valve, also lowered 5 system on the other hand of rigid, it limitted to hurtle characteristic and exercise the further improvement of steady , the improvement slippery pedestal dynamic state characteristic can carry on from two paths:Namely change an oil urn capacity and change from adjust to carry on the back to pressvalve structure parison passed one true calculation and result of the imitate of parameter of the system structure can get:When oil urn have pole chamber and row pipeline thecapacity V4 together has no pole chamber with enter pipeline the capacity V3 of ratio from original of change to 1, such as the figure 6 bs show, in the meantime, from adjust to carry on the back to press the valve valve Xin bottom to carry diameter is increase by the original 10 mms for the 13 mms, damping triangle slot side long let up a mms from the original lmm, canmake slippery pedestal of ex hurtle quantity to let up 30%, transfer the process obviouslyshortens for time and slip the exercise of pedestal steady to get to very greatly improve. Six, conclusion Imitate a true research through theories analysis and calculator, from adjust to carry on the back to press to adjust soon system Be bine a drive of the tool machine slippery pedestal system to have much of expansion use main factor which influences a slippery pedestal dynamic state characteristic is oil urn internal structure with from adjust to carry on the back topress valve of as to it39。 1974five dynasties microprocessor and 1990sixth generation (overseaswascalledPCBASED) based on PC. onto this path. Uses PC machine to take at least its front end machine, processes the manmachine contact surface, the programming, the and so on correspondence, undertakes the numerical control duty by the original system. PC machine has the friendly manmachine contact surface, will popularize to all numerical control