Abstract:
본원발명은 화물의 적하장에 이송차량이 이동되는 고가 가이드웨이 트랙을 설치하여, 화물의 선적, 하역 및 적하장에서의 적재 작업을 이송차량에 의해 일괄하여 연속 처리할 수 있도록 하는 화물 이송장치를 제공하는 것을 그 목적으로 하는 것으로서, 상술한 목적을 달성하기 위한 본원 발명의 화물 이송장치는, 화물의 이송 경로 상에 일정 간격으로 배치되는 교각과 상기 교각의 상부 저면에서 상기 교각을 따라 연장되도록 설치되어 이송차량과 전자기 상호유도작용을 수행하여 이송차량이 이동되는 이송레일로 이루어지는 고가 가이드웨이 트랙과; 상기 이송레일과 결합된 후 전자기 상호유도 작용을 수행하여 상기 이송레일을 따라 이동되어 컨테이너를 운반하는 이송차량;으로 구성되어, 화물의 적재, 하역, 선적 작업을 신속하게 처리할 수 있도록 함은 물론, 유지비용을 절감시킬 수 있도록 하는 효과를 제공한다. 화물 이송장치, 선적, 하역, 적재, 적하장, 고가 가이드웨이 트랙, 이송차량
Abstract:
PURPOSE: An apparatus is provided to detect an exact location of a LSM(Linear Synchronous Motor) by using a field magnet part and an armature part without an external current or an optical detection signal. CONSTITUTION: An armature part(110) is arranged in a ground. A field magnet part(120) is arranged in a transport unit. A field magnet part has an uneven portion corresponding to an uneven portion of the armature part. An inductance detection unit(130) is connected to the field magnet part by a coil. The inductance detection unit detects the inductance which is changed according to the air gap difference between the field magnet part and the armature part. A location information detection part(140) detects the location information of a LSM based on the change of the inductance detected by the inductance detection unit.
Abstract:
본 고안은 전기차량에 전원을 공급하는 전차선과 팬터그래프간의 접촉 불량으로 발생하는 아크를 좌우 독립센서를 이용하여 탐지하여 이선율(Loss of Contact Rate)를 평가하기 위한 전차선 이선 아크 계측 시스템에 관한 것이다. 이를 실현하기 위한 본 고안은, 동일한 2개의 아크센서로 전동차 지붕의 좌우에 일정간격 이격되게 설치되어 팬터그래프의 집전판과 전차선의 접촉부위에 초점이 맞추어 있으면서 렌즈 및 필터를 장착하고 있는 광학검출부, 상기 광학검출부를 수납하면서 제어신호에 따라 수평 및 수직 방향으로 틸팅가능하여 상기 아크센서의 초점을 맞출 수 있도록 된 외함, 상기 광학검출부로 광을 탐지하는데 필요한 전기적 반송 신호를 광학검출부로 보내주고 아울러 광학검출부에서 전달되어 오는 광 검출 신호를 전기적으로 처리하면서 좌우 아크센서의 크기를 비교하여 편위여부를 판단하는 신호처리부, 상기 신호처리부에 의해 수신되는 아크, 가선 전압/전류, 아크 발생위치를 전동차의 속도, 위치 경로와 연계하여 제어함과 아울러 광학검출부의 틸팅을 제어하는 콘트롤러를 포함하여 이루어진 고안이다. 팬터그래프, 이선, 아크, 방전, 접촉불량
Abstract:
A power supply system for a measurement apparatus of an electric rail is provided to reduce labor, maintenance, and repair costs by converting contactlessly induced power into power available for the measurement apparatus to supply the converted power to the measurement apparatus. A power supply system for a measurement apparatus(40) of an electric rail includes a voltage induction coil(10) and a power converting apparatus(20). The voltage induction coil is wound around a suspension wire(11) and contactlessly generates AC power from current flowing on the suspension wire by electromagnetic induction. The power converting apparatus converts the AC power induced from the voltage induction coil into DC power. The power supply system further includes a battery(30) to store the DC power outputted from the power converting unit.
Abstract:
PURPOSE: A simulation system for performing a performance test of a motor for a railway vehicle is provided to reduce the incidental expense by obtaining a test result from a simulation test process. CONSTITUTION: A simulation system for performing a performance test of a motor for a railway vehicle includes a test driving unit and a simulator unit. The test driving unit(10) provides necessary current when a performance test of an arbitrary motor for a railway vehicle is performed. The simulator unit(20) receives characteristics of a testing motor and load characteristics from an arbitrary tester and sets up the test environment thereby. The simulator unit receives the current from the test driving unit, performs the performance test under the test environment, and output a test result.
Abstract:
The present invention provides a gate drive for protecting a switching element (IGBT) used for an electrical inertial load controller. A high-voltage IGBT is used as the switching element and an hcp1316j is used as the gate drive of the IGBT, to restrict overvoltage and overcurrent generated in the event of inverter switching, preventing destruction of the IGBT in advance. Furthermore, an RC filter is formed in close proximity to the IGBT to minimize an erroneous switching operation due to harmonics generated caused by noise in case of inverter switching to improve the system reliability and block an increase in abnormal voltage applied across the switching element.
Abstract:
PURPOSE: A speed detecting apparatus for a railroad vehicle is provided to simplify a circuit, reduce manufacture cost, and detect accurately acceleration and deceleration of the railroad vehicle. CONSTITUTION: A speed detecting apparatus for a railroad vehicle comprises an encoder input circuit, a voltage comparator and a TTL level converter. The encoder input circuit applies a real speed of a motor to a controller in the vehicle for detecting speed change during acceleration and deceleration of the railroad vehicle. The encoder input circuit includes a filter circuit having a resistor and a capacitor for minimizing noise due to rotation of the motor in the vehicle, and a limit circuit having a diode for limiting an input voltage to stabilize an output voltage even when the speed increases. The voltage comparator normalizes the filtered signal. The TTL level converter converts the normalized output to a TTL level.
Abstract:
PURPOSE: A control device for testing an electrical inertia load of a railroad car is provided to reduce a manufacturing cost and a malfunction of the control device by adding a function of an A/D converter, a function of a flash ROM, and a pulse width modulation function to a high-speed operating function of existing DSP(Digital Signal Processing) portion. CONSTITUTION: A control device is formed with a power supply converter for supplying electric power to an inertia simulator, an AD converter for measuring output torque and the amount of current of the power converter, an encoder portion for measuring a speed of a motor, a power converter for reducing the power for sharing a DC link terminal, and a database unit for consuming the power to prevent a boosting phenomenon of the DC link terminal. TMS320F240 is used as a microprocessor. The TMS320F240 has a function of an A/D converter, a function of a flash ROM, and a pulse width modulation function as well as a high-speed operating function of an existing DSP portion.
Abstract:
PURPOSE: A phase current detecting apparatus for inverter speed control is provided to protect a motor from overcurrent, perform precision control, simplify circuitry and reduce manufacture cost. CONSTITUTION: A phase current detecting apparatus(20) for inverter speed control comprises a current detector(21), a differential input circuit(22) and a rectifying circuit(23). A DC voltage from an inverter(10) of a car is inputted to a controller(30) via the phase current detecting apparatus(20). The current detector(21) functions as an isolation amplifier to reduce electric noise from a voltage from the inverter(10). A limiting circuit and a filter of the differential input circuit(22) stably maintain the output voltage of the current detector(21). The output of the differential input circuit(22) is applied to the rectifying circuit(23) for protection in both + and - directions. The output of the rectifying circuit(23) is applied to a controller(30) via an isolation amplifier.
Abstract:
PURPOSE: A phase current detecting apparatus for inverter speed control is provided to protect a motor from overcurrent, perform precision control, simplify circuitry and reduce manufacture cost. CONSTITUTION: A phase current detecting apparatus(20) for inverter speed control comprises a current detector(21), a differential input circuit(22) and a rectifying circuit(23). A DC voltage from an inverter(10) of a car is inputted to a controller(30) via the phase current detecting apparatus(20). The current detector(21) functions as an isolation amplifier to reduce electric noise from a voltage from the inverter(10). A limiting circuit and a filter of the differential input circuit(22) stably maintain the output voltage of the current detector(21). The output of the differential input circuit(22) is applied to the rectifying circuit(23) for protection in both + and - directions. The output of the rectifying circuit(23) is applied to a controller(30) via an isolation amplifier.