39results about How to "Simple regulation" patented technology

A vibration exciter has at least two axles disposed parallel to one another, as well as at least two imbalance masses, which are attached to one or more of the axles. The relative rotary position of the imbalance masses can be adjusted relative to one another by a rotary oscillating motor having a rotor shaft and a stator housing. The rotor shaft is an integral part of one of the axles, and the rotary position of the stator housing relative to the rotor shaft can be changed. The stator housing can be locked to the rotor shaft. The oscillating motor has a rotor shaft and a stator housing, between which working chambers are formed. The stator housing can rotate about the rotor shaft and can be locked relative to the rotor shaft.

A wear-resistant material comprising an alloy that contains: 1.5-5.5 wt. % carbon, 0.1-2.0 wt. % silicon, max. 2.0 wt. % manganese, 3.5-30.0 wt. % chromium, 0.3-10 wt. % molybdenum, 0-10 wt. % tungsten, 0.1-30 wt. % vanadium, 0-12 wt. % niobium, 0.1-12 wt. % titanium and 1.3-3.5 wt. % nickel, the remainder being comprised of iron and production-related impurities, whereby the carbon content fulfils the following condition:CAlloy [w %]=S1+S2+S3where S1=(Nb+2(Ti+V−0.9)) / a, S2=(Mo+W / 2+Cr−b) / 5, S3=c+(TH−900)·0.0025, where 7<a<9, 6<b<8, 0.3<c<0.5 and 900° C.<TH<1,220° C.

The invention relates to a method for regulating a welding current source with a current transformer, which has a series resonant circuit on the primary side and a parallel resonant circuit on the secondary side, the series resonant circuit being supplied with a variable alternating voltage by a bridge circuit and the parallel resonant circuit providing energy to a welding process by way of a rectifier, and a control unit controlling the bridge circuit in dependence on at least one state variable of the welding current source. In order to develop the method in such a way as to make regulation possible at low cost and with as little power loss as possible, it is proposed according to the invention that only the primary current or a state variable on the primary side corresponding to the primary current is recorded as the electrical-current state variable of the welding current source and a control signal dependent on the primary current or on the state variable corresponding thereto is fed to the control unit. A welding current source for carrying out the method is also proposed.