摘要:
In a motor control system and method controlled by a d-axis current command value i.sub.ds and a q-axis current command value i.sub.qs, a d-axis voltage command value V.sub.d * and a q-axis voltage command value v.sub.q * are computed on the basis of d-axis current deviation .DELTA.i.sub.d of d-axis current value i.sub.d from the d-axis current command value i.sub.ds and q-axis current deviation .DELTA.i.sub.q of q-axis current value i.sub.q from the q-axis current command value i.sub.qs and on the basis of q-axis inductance value L.sub.q and d-axis inductance value L.sub.d wherein the inductance values L.sub.q and L.sub.d are tuned or adjusted so that the d-axis current deviation .DELTA.i.sub.d and q-axis current deviation .DELTA.i.sub.q approach zero.
摘要:
A composition for irradiation with an ionizing radiation, characterized by comprising: (a) 0.01 to 30 parts by weight of a soluble aniline polymer which comprises one or both of the repeating units represented by the following general formulae (1) and (2), said repeating units being included at least 80% of the total repeating units, possesses a weight average molecular weight of not less than 10,000, and is solid at room temperature; and (b) 100 parts by weight of a solvent, ##STR1## wherein R.sup.1 to R.sup.4 represent an electron-donating group, Y.sup.1 to Y.sup.4 represent --SO.sub.3 -- or --COO--, and M.sup.1 to M.sup.4 represent a hydrogen ion, an ammonium ion, an a1kyl ammonium ion with 1 to 8 carbon atoms, an aromatic ammonium ion, or a quaternary ion of an aromatic heterocyclic ring.
摘要:
Coating agents to be applied onto base materials such as thermoplastic resin films to provide improved surface characteristics include an aqueous emulsion of polysiloxane-polyvinyl graft copolymer essentially of specified kinds of siloxane units.
摘要:
A system of changing over an electric power source for an electric motor vehicle including a secondary battery and a generator. The system is provided with a changeover circuit for changing over a state of connection between the secondary battery and the generator; and a controller for determining a power supply mode on the basis of a vehicle speed and an electric current value for driving a motor, the controller being adapted to instruct a changeover to the power supply mode to the switching circuit, thereby allowing high-speed and long-distance running.
摘要:
Herein disclosed is a power unit for an electric car, which comprises: a first power supply mounted on the electric car and adapted to be always used; and a second power supply mounted on the electric car, if necessary. The first power supply may include a battery for effecting a travel of low speed and short distance by itself. The second power supply may include a battery module for effecting a travel of high speed and short distance and a generator module for effecting a travel of high speed and long distance.