Abstract: A device for communication including a gimbal and a communication unit being rotatably supported by the gimbal and having a communication port for optical wireless communication and an imaging unit for capturing an image in a direction in which the communication port executes optical wireless communication is provided. In addition, a communication device including the device for communication and a communication executing unit for executing optical wireless communication using the communication port is provided.

Abstract: There is provided a moving body including: an optical wireless communication unit configured to execute an optical wireless communication with another moving body; an object detection unit configured to detect an object around an own moving body; an object information transmission unit configured to transmit, to the other moving body, first object information including location information of the object, by the optical wireless communication or a radio wave communication; an object information receiving unit configured to receive, from the other moving body, second object information including location information of an object around the other moving body, by the optical wireless communication or the radio wave communication; and a movement control unit configured to control, based on the first object information and the second object information, a movement of the own moving body such that an object is not located on an optical axis of the optical wireless communication.

Abstract: Provided is a mobile object including: a mobile object information transmitting unit configured to transmit, to another mobile object by optical wireless communication by a first optical wireless communication unit, first mobile object information including first inertial measurement information and first body control information; a mobile object information receiving unit configured to receive, from the another mobile object by optical wireless communication by the first optical wireless communication unit, second mobile object information including second inertial measurement information and second body control information; and an optical axis direction control unit configured to control a direction of an optical axis of the first optical wireless communication unit on a basis of the first mobile object information and the second mobile object information.

Abstract: A device for communication including a gimbal and a communication unit being rotatably supported by the gimbal and having a communication port for optical wireless communication and an imaging unit for capturing an image in a direction in which the communication port executes optical wireless communication is provided. In addition, a communication device including the device for communication and a communication executing unit for executing optical wireless communication using the communication port is provided.

Abstract: Provided is an electric power system capable of rapidly slowing an electric motor and quickly discharging a capacitor when an abnormality occurs. If an abnormality detection device detects an abnormality, a control device of an electric power system performs a switching control that alternately switches between an upper arm three-phase short-circuit control that sets all upper arms to a conductive state and sets all lower arms to a non-conductive state, and a lower arm three-phase short-circuit control that sets all upper arms to a non-conductive state and sets all lower arms to a conductive state. When switching between the two short-circuit controls, a conduction overlap period in which the conductive state of said upper arms and the conductive state of said lower arms overlap may be generated.

Abstract: Provided is an electric power system capable of rapidly slowing an electric motor and quickly discharging a capacitor when an abnormality occurs. If an abnormality detection device detects an abnormality, a control device of an electric power system performs a switching control that alternately switches between an upper arm three-phase short-circuit control that sets all upper arms to a conductive state and sets all lower arms to a non-conductive state, and a lower arm three-phase short-circuit control that sets all upper arms to a non-conductive state and sets all lower arms to a conductive state. When switching between the two short-circuit controls, a conduction overlap period in which the conductive state of said upper arms and the conductive state of said lower arms overlap may be generated.