Siemens Mobility Gmbh

Quinton Reed

Daniel Spencer

Leah Chowenhill

Richard C Bohme

Norbert Soós

A dynamic load system includes a first electric machine simulating a load, a second electric machine, a coupling device for mechanically coupling the first electric machine to the second electric machine, a control unit with a processor and connected to the first electric machine and the second electric machine, wherein the control unit is configured to control the first electric machine and the second electric machine, wherein a reference value of the second electric machine is utilized to achieve a specific performance of the first electric machine.

Dynamic load system and method for simulating a crossing gate mechanism

Examples described herein provide a computer-implemented method that includes detecting a loss of power to a motor of the gate crossing mechanism. The motor is operably coupled to a gate of the gate crossing mechanism. The method further includes, responsive to detecting the loss of the power, providing, by at least one supercapacitor, power to the motor to initiate the gate moving from an open position to a closed position.

Supercapacitor power supply for a gate crossing mechanism

Examples described herein provide a computer-implemented method for predicting a state of a hall sensor for a motor having a plurality of hall sensors associated therewith. The example method includes receiving a previous state of the hall sensor. The example method further includes detecting a current state of the hall sensor. The example method further includes predicting a predicted next state of the hall sensor based on the previous state of the hall sensor, the current state of the hall sensor, and a direction of a shaft of the motor.

Hall sensor fault detection for gate crossing mechanisms

Examples described herein provide a method for overspeed protection of a motor of a gate crossing mechanism. The method includes monitoring, by an overspeed protection circuit, a voltage across a first Zener diode and a second Zener diode. An anode of the first Zener diode is connected to an anode of the second Zener diode. The method further includes, responsive to determining that a Zener voltage threshold is exceeded, allowing a current to flow into a gate pin of a triac. The triac controls the motor of the gate crossing mechanism.

Overspeed protection for a motor of a gate crossing mechanism

Examples described herein provide a computer-implemented method for thermal lockout for a motor of a gate crossing mechanism. The method includes monitoring a motor current across a sense resistor of the motor. The method further includes determining a present thermal capacity unit (TCU) at a time interval based on the motor current across the sense resistor. The method further includes determining whether the motor is at a thermal limit by comparing the present TCU to an expected TCU. The method further includes responsive to determining that the motor is at the thermal limit, causing initiating a hard fault.

Thermal lockout for a motor of a gate crossing mechanism

Examples described herein provide a method for direction control of a motor of a gate crossing mechanism. The method includes providing, by a field-effect transistor (FET) driver, a first voltage via a high output to an open contact of a first relay and to a closed contact of a second relay. The first voltage causes a shaft of the motor to turn in a first direction. The method further includes providing, by the FET driver, a second voltage via a low output to a closed contact of the first relay and to an open contact of the second relay. The second voltage causes the shaft of the motor to turn in a second direction opposite the first direction.

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Oil City, PA, United States of America

Quinton Reed