MOTOR CONTROL APPARATUS FOR A RAILWAY SWITCH MACHINE
摘要
<p>A motor control apparatus (104) for a railway switch machine (106) includes a power source (134) for a voltage; a selector (132) for providing the voltage to a reversible motor (105) of the switch machine (106) in a normal state, and for providing a reverse polarity of the voltage to the reversible motor (105) in a reverse state; a first transistor (128) for switching reverse current flowing through the reversible motor (105); a first diode (130) electrically connected in parallel with the first transistor (128) for conducting normal current for the reversible motor (105); a second transistor (129) for switching normal current flowing through the reversible motor (105); a second diode (131) electrically connected in parallel with the second transistor (129) for conducting reverse current for the reversible motor (105); and a circuit (118) for controlling the first and second transistors based upon the position or operating mode of the railway switch machine (106).</p>
申请公布号
WO0154263(A1)
申请公布日期
2001.07.26
申请号
WO2001US02157
申请日期
2001.01.23
申请人
UNION SWITCH & SIGNAL, INC.
发明人
FRANKE, RAYMOND, C.;BOZIO, ROBERT, P.;WYDOTIS, LEONARD, M.