buletinul institutului politehnic din iaşi bulletin of the polytechnic ...

EXPERIMENTAL RESEARCH REGARDING THE DYNAMIC
BEHAVIOR OF LINEAR HYDRAULIC SERVO-SYSTEMS
by
CORNELIU CRISTESCU, PETRIN DRUMEA,
CĂTĂLIN DUMITRESCU and DRAGOŞ ION GUŞĂ
Abstract. The paper presents the results of experimental
research on the dynamic behavior of linear hydraulic motors and
linear positioning servo-systems carried out in INOE 2000-IHP, in
the framework of the NUCLEU Program. The experimental
investigations were conducted on an experimental stand with data
acquisition and computer processing. The article presents some
experimental graphic results obtained in the research, results that
are of real scientific interest, which have a practical value through
the using of them in the design activities of the fluid power
components and equipments.
Key words: linear hydraulic servo-systems, dynamic
behavior, experimental research, test stand, data acquisition.
EFFECTIVE METHODS OF COST BREAKDOWN
FOR DIRECT COSTS, TOOLS AND PRODUCT COSTS
by
FLORINA-CRISTINA FILIP
Abstract. Various customers require a detailed breakdown of
the product costs in the quotation and delivery phase, depending on
the project costs involved. Some customers have different
procedures and consequently use their own forms. In principle,
detailed product cost illustrations for customers are subject to
restrictions and may only be forwarded to customers once this has
been agreed with the relevant departments. The content of the
product cost breakdown is defined in the escalation stages and
forwarded on. All the basic information for all stages about tooling
adjustment costs (testing costs), tooling costs, design costs and typespecific
measuring equipment costs is the same. The aim of this
procedure is to ensure that the information presented to the customer
is of uniform content. This is particularly important if the customer
submits an enquiry for a product to different sales regions on an
uncoordinated basis. The purpose of this paper is to regulate the