A photovoltaic system includes the photovoltaic module, an electric energy conversion apparatus, an inverter, and a computing device. The computing device determines whether output power of the photovoltaic module meets a first preset condition, where the first preset condition is that the output power is greater than or equal to a first preset output power; when the first preset condition is met, the computing device determines to set the photovoltaic module to a default configuration direction, where the default configuration direction is a photovoltaic module orientation in which sunlight is irradiated onto the photovoltaic module with a minimum incident angle; and when the first preset condition is not met, the computing device determines to set the photovoltaic module to a target orientation, where the target orientation is different from the default configuration direction.

A suspended system with orientation control. The system may have a frame, a sign attached to the frame, a plurality of sensors, at least two thrusters, and a microcontroller operatively coupled to the plurality of sensors and the thrusters. The frame is configured to be suspended from a support, and the sign is configured to display a graphic. The plurality of sensors is configured to track an orientation of the frame. The thrusters are configured to adjust the orientation of the frame. Each of the thrusters may have an axis oriented in a direction perpendicular to the frame. The microcontroller is configured to receive a selected orientation of the frame, receive the current orientation of the frame from the sensors, compare the orientation of the frame with the selected orientation, and control the thrusters to adjust the orientation of the frame into the selected orientation.

Included are a first position detection part that detects a first position which is the position of a movable part; a second position detection part that detects a second position which is the position of a driven part; a positional error calculation part that calculates positional error, which is deviation between a converted first position detection value and a second position detection value; and a positional error variation calculation part that calculates an absolute value for variation of positional error since reversal of a position command was detected, in which addition of a backlash correction amount is started if the absolute value for the variation of the positional error exceeds a first reference value, and addition of a backlash acceleration amount is started if the absolute value of variation of the positional error exceeds a second reference value.

Included are a first position detection part that detects a first position which is the position of a movable part; a second position detection part that detects a second position which is the position of a driven part; a positional error calculation part that calculates positional error, which is deviation between a converted first position detection value and a second position detection value; and a positional error variation calculation part that calculates an absolute value for variation of positional error since reversal of a position command was detected, in which addition of a backlash correction amount is started if the absolute value for the variation of the positional error exceeds a first reference value, and addition of a backlash acceleration amount is started if the absolute value of variation of the positional error exceeds a second reference value.

In the design of a mechanical component for a mechanical device driven by a feedback controlled electric motor, the user is enabled to easily know how the properties of mechanical component affect the generation of abnormal vibrations of the mechanical device. In a design assist apparatus (1), the processor (11) is configured to set a plurality of parameters of a mathematical model of an analysis target component selected from one or more mechanical components (24, 56, 58) forming the mechanical device, compute a pole of a transfer function of the mechanical device associated with one or more vibration modes of the mechanical device according to the parameters, and create a stability determination diagram including an isoline of a real part of the pole of the transfer function.

In the design of a mechanical component for a mechanical device driven by a feedback controlled electric motor, the user is enabled to easily know how the properties of mechanical component affect the generation of abnormal vibrations of the mechanical device. In a design assist apparatus (1), the processor (11) is configured to set a plurality of parameters of a mathematical model of an analysis target component selected from one or more mechanical components (24, 56, 58) forming the mechanical device, compute a pole of a transfer function of the mechanical device associated with one or more vibration modes of the mechanical device according to the parameters, and create a stability determination diagram including an isoline of a real part of the pole of the transfer function.

Providing a system that prevents decrease of attentiveness of drowsiness of a driver of a moving vehicle. A safe-driving support system is provided. The safe-driving support system comprises: a spraying device having a shape being able to be steadily placed near a driving seat of a movable body and spraying in the movable body; a mobile information processing device configured to be able to perform proximity communication with the spraying device and being able to obtain current location information via a GPS; and an information providing server providing the information processing device with information via the Internet.

A TV wall mounting device includes a wall mount box with vertical supports, a display mount receiving a TV, and an extending/contracting portion between the box and the display mount. The extending/contracting portion has lower and upper arms rotatably attached to the wall mount with rear axles, a pair of linear actuators rotatably attached to the wall mount, a front portion that rises and lowers with action of the actuators, and a horizontally-swiveling portion that is raised and lowered with the front portion and is capable of rotating right-left with respect to the front portion. The display mount is attached to the horizontally-swiveling portion. Parallel operation of the linear actuators, wherein each actuator extends and retracts while keeping the same length as the other actuator, causes the display mount to go up and down. Differential operation of the actuators causes the display mount to rotate right and left.

A TV wall mounting device includes a wall mount box with vertical supports, a display mount receiving a TV, and an extending/contracting portion between the box and the display mount. The extending/contracting portion has lower and upper arms rotatably attached to the wall mount with rear axles, a pair of linear actuators rotatably attached to the wall mount, a front portion that rises and lowers with action of the actuators, and a horizontally-swiveling portion that is raised and lowered with the front portion and is capable of rotating right-left with respect to the front portion. The display mount is attached to the horizontally-swiveling portion. Parallel operation of the linear actuators, wherein each actuator extends and retracts while keeping the same length as the other actuator, causes the display mount to go up and down. Differential operation of the actuators causes the display mount to rotate right and left.

A vehicle may include a side mirror including a housing and a mirror member provided inside the housing and rotatable in a first axis and a second axis in the housing; an input unit configured to receive an identification information related to a driver; a driving apparatus configured to identify a target position corresponding to the identification information related to the driver, acquire a plurality of paths for moving the mirror member between the identified target position and the current position, identify each of positions for switching the movement direction of the acquired plurality of paths, select a path having positions for switching the movement direction closest to a predetermined center position among the respective positions for switching the movement direction thereof, and selectively control rotation of the first axis and rotation of the second axis of the mirror member based on the selected path.