PROCEDEU PENTRU EVITAREA SUPRASOLICITARII MECANISMELOR DE RIDICAT SI CIRCUIT PENTRU REALIZAREA PROCEDEULUI

摘要

The protection circuit produces an electrical signal proportional to the load and compares this signal with a first reference representing maximum load and with a second reference representing overloading. The differential time quotient of the signal is constructed and its value over the time required to reach the first reference is stored. When the loading reaches the second reference the instantaneous differential quotient at this time is compared with the stored quotient and an overloading alarm released when the instantaneous quotient is greater than a given fraction of the stored quotient. When the first reference is reached the quotient is stored with a value reduced by the given fraction (e.g. to 0.95 times).