Abstract: A converter includes: a power converter for selectively executing a rectification operation for converting alternating-current (AC) power on a three-phase alternating-current power supply side into direct-current (DC) power output on a DC side, and a regenerative operation for converting DC power on the DC side into AC power output on the AC side; a voltage detector for detecting a voltage value regarding each of phase voltages input from the AC side; a controller for controlling the rectification operation and regenerative operation based on arithmetic operation processing using the voltage value; a current detector for detecting a regenerative current value from the power converter to the AC side in the regenerative operation; and a wiring state detector for detecting a wiring state between the voltage detector and the AC power supply based on a comparison between the regenerative current value and a predetermined threshold value.

Abstract: Systems and methods of traffic light detection/perception are provided for detecting traffic lights states and/or transitions for different traffic light layouts. Basic traffic light information can be obtained regarding, e.g., the existence of a traffic light(s) at an intersection being approached by a vehicle, and which bulb(s) may apply to/control a particular lane of traffic at the intersection. Based on that information, bulb-specific or bulbwise detection can be performed. Upon determining the existence of a traffic light, specific bulbs within or making up the traffic light can be detected, and their various states can be predicted or estimated relative to a corresponding bulb group. The various states can then be simplified and output as a message(s) upon which autonomous control of a vehicle can be based.

Abstract: A method for performing vehicle taillight recognition is described. The method includes extracting spatial features from a sequence of images of a real-world traffic scene during operation of an ego vehicle. The method includes selectively focusing a convolutional neural network (CNN) of a CNN-long short-term memory (CNN-LSTM) framework on a selected region of the sequence of images according to a spatial attention model for a vehicle taillight recognition task. The method includes selecting, by an LSTM network of the CNN-LSTM framework, frames within the selected region of the sequence of images according to a temporal attention model for the vehicle taillight recognition task. The method includes inferring, according to the selected frames within the selected region of the sequence of images, an intent of an ado vehicle according to a taillight state. The method includes planning a trajectory of the ego vehicle from the intent inferred from the ado vehicle.

Abstract: A connection structure, of a short bar forming a conductive path and a land on a printed circuit board, in which the short bar includes a plate portion having a flat plate shape and a protrusion protruding in a stepped shape from a surface of the plate portion, the protrusion is threadably fastened to the printed circuit board by a screw inserted into a land-side through hole formed through the land, from an opposite side of the printed circuit board with respect to the protrusion, in a state where a flat surface portion formed, at a position spaced apart from the surface of the plate portion, on an outer surface of the protrusion is in close contact with the land.

Abstract: Systems and methods of traffic light detection/perception are provided for detecting traffic lights states and/or transitions for different traffic light layouts. Basic traffic light information can be obtained regarding, e.g., the existence of a traffic light(s) at an intersection being approached by a vehicle, and which bulb(s) may apply to/control a particular lane of traffic at the intersection. Based on that information, bulb-specific or bulbwise detection can be performed. Upon determining the existence of a traffic light, specific bulbs within or making up the traffic light can be detected, and their various states can be predicted or estimated relative to a corresponding bulb group. The various states can then be simplified and output as a message(s) upon which autonomous control of a vehicle can be based.

Abstract: A motor drive apparatus includes: a rectifier; an inverter; a DC link voltage detection unit; an input current detection unit configured to detect input current inputted to the rectifier; a DC link voltage comparison unit configured to compare a DC link voltage with a first voltage threshold value and with a second voltage threshold value; a current comparison unit configured to compare the input current with a current threshold value; and an abnormality detection unit configured, in a case that the DC link voltage is smaller than the first voltage threshold value or that the DC link voltage is greater than the second voltage threshold value, to determine that a first abnormality has occurred when the input current is smaller than the current threshold value and to determine that a second abnormality has occurred when the input current is equal to or greater than the current threshold value.

Abstract: A rectifier according to an aspect of the present disclosure includes: a bridge circuit that derives a positive voltage component and a negative voltage component from an AC power supply voltage; a smoothing capacitor that smooths an output voltage from the bridge circuit; a pre-charge resistor that is provided between the bridge circuit and the smoothing capacitor, and reduces an inrush current; a charge switch that is provided in parallel with the pre-charge resistor; and a controller that controls the charge switch between an open state and a close state, wherein when application of the AC power supply voltage to the bridge circuit is started, the controller closes the charge switch if a voltage applied between ends of the pre-charge resistor is determined to become equal to or lower than a predetermined resistor threshold voltage.

Abstract: A motor drive apparatus includes: a rectifier; an inverter; a DC link voltage detection unit; an input current detection unit configured to detect input current inputted to the rectifier; a DC link voltage comparison unit configured to compare a DC link voltage with a first voltage threshold value and with a second voltage threshold value; a current comparison unit configured to compare the input current with a current threshold value; and an abnormality detection unit configured, in a case that the DC link voltage is smaller than the first voltage threshold value or that the DC link voltage is greater than the second voltage threshold value, to determine that a first abnormality has occurred when the input current is smaller than the current threshold value and to determine that a second abnormality has occurred when the input current is equal to or greater than the current threshold value.

Abstract: A rectifier according to an aspect of the present disclosure includes: a bridge circuit that derives a positive voltage component and a negative voltage component from an AC power supply voltage; a smoothing capacitor that smooths an output voltage from the bridge circuit; a pre-charge resistor that is provided between the bridge circuit and the smoothing capacitor, and reduces an inrush current; a charge switch that is provided in parallel with the pre-charge resistor; and a controller that controls the charge switch between an open state and a close state, wherein when application of the AC power supply voltage to the bridge circuit is started, the controller closes the charge switch if a voltage applied between ends of the pre-charge resistor is determined to become equal to or lower than a predetermined resistor threshold voltage.

Abstract: A connection structure, of a short bar forming a conductive path and a land on a printed circuit board, in which the short bar includes a plate portion having a flat plate shape and a protrusion protruding in a stepped shape from a surface of the plate portion, the protrusion is threadably fastened to the printed circuit board by a screw inserted into a land-side through hole formed through the land, from an opposite side of the printed circuit board with respect to the protrusion, in a state where a flat surface portion formed, at a position spaced apart from the surface of the plate portion, on an outer surface of the protrusion is in close contact with the land.

Abstract: A motor driving device includes a heat sink, a rectifier provided on the heat sink and configured to rectify an AC voltage supplied from an AC power supply to a DC voltage, a charging resistor provided on the heat sink and configured to be used for charging a smoothing capacitor for smoothing the DC voltage rectified by the rectifier, and a temperature sensor with which the charging resistor is provided.

Abstract: A method for performing vehicle taillight recognition is described. The method includes extracting spatial features from a sequence of images of a real-world traffic scene during operation of an ego vehicle. The method includes selectively focusing a convolutional neural network (CNN) of a CNN-long short-term memory (CNN-LSTM) framework on a selected region of the sequence of images according to a spatial attention model for a vehicle taillight recognition task. The method includes selecting, by an LSTM network of the CNN-LSTM framework, frames within the selected region of the sequence of images according to a temporal attention model for the vehicle taillight recognition task. The method includes inferring, according to the selected frames within the selected region of the sequence of images, an intent of an ado vehicle according to a taillight state. The method includes planning a trajectory of the ego vehicle from the intent inferred from the ado vehicle.

Abstract: A motor driving device includes a heat sink, a rectifier provided on the heat sink and configured to rectify an AC voltage supplied from an AC power supply to a DC voltage, a charging resistor provided on the heat sink and configured to be used for charging a smoothing capacitor for smoothing the DC voltage rectified by the rectifier, and a temperature sensor with which the charging resistor is provided.

Abstract: System, methods, and other embodiments described herein relate to identifying changes to a location. In one embodiment, a method includes, in response to receiving current sensor data about the location, extracting a semantic feature distribution from the current sensor data according to a semantic-change model that identifies sensed integral features and sensed transient features from the current sensor data. The method includes identifying a scene change to the location by determining whether the sensed integral features differ from learned integral features of a normal distribution that indicates both learned integral features and learned transient features of the location. The method includes updating a map of the location in response to identifying that one or more of the sensed integral features differ from the learned integral features of the normal distribution. The method includes controlling one or more vehicle systems of the vehicle according to the map.