Abstract: A transmission system includes a calculation unit 251 that calculates a jitter pattern sequence of a plurality of packets transmitted by a transmission device 1 via a network using a transmission interval of the plurality of packets and a difference between arrival times at which the packets arrive at a reception device 2, a generation unit 252 that inputs the jitter pattern sequence to a first learning model 254 to generate a state index indicating a state of the network, and a buffer estimation unit 26 that determines a buffer size of a reception buffer 23 of the reception device 2 based on the state index.

Abstract: A control device for a three-phase motor includes a drive circuit that converts DC power supply voltage into three-phase AC voltage and supplies the three-phase AC voltage to the three-phase motor, a first voltage detection unit that detects terminal voltage of three phases of the three-phase motor, and a control unit that detects a point at which a first voltage value, which is a detection value of the terminal voltage, intersects a predetermined zero-cross determination level as a zero-cross point, and controls the drive circuit based on a detection result of the zero-cross point. The control unit corrects the first voltage value by multiplying the first voltage value by a first coefficient inversely proportional to an output duty ratio with respect to the three-phase motor in a case where the output duty ratio is equal to or less than a predetermined threshold.

Abstract: One aspect of a motor control device of the present invention is a motor control device that controls a three-phase motor, the motor control device including a drive circuit that converts DC power supply voltage into three-phase AC voltage and supplies the three-phase AC voltage to the three-phase motor, a voltage detection unit that detects terminal voltage of three phases of the three-phase motor, and a control unit that detects a point at which induced voltage appearing in each terminal voltage of the three phases intersects a predetermined zero-cross determination level as a zero-cross point, and controls the drive circuit based on a detection result of the zero-cross point. The control unit changes a value of the zero-cross determination level when the induced voltage of at least one of the three phases increases and when the induced voltage of at least one of the three phases decreases.

Abstract: One aspect of a motor control device according to the present invention is a motor control device that controls a motor of an electric pump. The motor control device includes a drive unit that supplies a drive current to the motor; a control unit that controls a rotation speed of the motor by controlling the drive unit based on a rotation speed command value; and a current detection unit that detects the drive current supplied to the motor, and supplies a current detection value indicating a detection result of the drive current to the control unit. The control unit determines whether or not a foreign fluid suction abnormality occurs in the electric pump, based on a first current detection value acquired at a first timing when the rotation speed command value changes from a first command value to a second command value and a second current detection value acquired after the first timing.

Abstract: A control device for a motor unit provided in a vehicle is disclosed. The motor unit includes a motor including multiple coils provided side by side around a motor axis; a transmission mechanism transmitting power of the motor to an axle; a housing housing the motor and the transmission mechanism; an electric oil pump delivering oil stored in the housing; and a coil temperature sensor detecting a temperature of the coil. The control device includes a motor controller driving and controlling the motor; and a pump controller driving and controlling the electric oil pump. The pump controller estimates an oil temperature according to an ambient temperature and the temperature of the coil, and determines a start timing of the electric oil pump based on an estimated oil temperature.

Abstract: A motor driving device for driving a motor is provided. The motor driving device includes: a driver outputting a drive signal for driving the motor to the motor; and a controller controlling a duty ratio of the drive signal based on three control parameters which are an initial duty ratio, a duty ratio increasing speed, and a target duty ratio. The controller has a normal control mode in which each of the three control parameters is a predetermined value, and a cryogenic control mode in which at least one of the three control parameters is a smaller value than in the normal control mode.

Abstract: Provided is a mobile toilet that can be used well. A mobile toilet includes a trailer, a toilet bowl disposed in a cargo box of the trailer, a drain tank disposed in the cargo box and storing sewage discharged from the toilet bowl, a drain passage communicating between the toilet bowl and the drain tank, and a second conveyance device provided in the middle of the drain passage. The toilet bowl has a drain trap communicating with an upstream end of the drain passage, and the drain passage passes a position higher than a sealing water level of the drain trap, and has a spout space provided in a position higher than the sealing water level of the drain trap.

Abstract: One aspect of a motor control device according to the present invention is a motor control device that controls a motor of an electric pump. The motor control device includes a drive unit that supplies a drive current to the motor; a control unit that controls a rotation speed of the motor by controlling the drive unit based on a rotation speed command value; and a current detection unit that detects the drive current supplied to the motor, and supplies a current detection value indicating a detection result of the drive current to the control unit. The control unit determines whether or not a foreign fluid suction abnormality occurs in the electric pump, based on a first current detection value acquired at a first timing when the rotation speed command value changes from a first command value to a second command value and a second current detection value acquired after the first timing.

Abstract: A determination device includes an image information acquirer configured to acquire image information of a subject image obtained by photographing an internal space of a toilet bowl in excretion; an estimator configured to perform estimation regarding a determination matter relating to excretion by inputting the image information to a learned model, the learned model having learned a correspondence relationship between an image for learning and a determination result of the determination matter relating to excretion, the learned model learned by machine learning using a neural network, the image for learning representing an internal space of a toilet bowl in excretion; and a determiner configured to perform determination regarding the determination matter of the subject image based on an estimation result obtained by the estimator.

Abstract: A controller of a motor control device increases a voltage to be applied to a coil based on a control signal calculated from an estimated rotation speed, when the estimated rotation speed becomes equal to or lower than a predetermined rotation speed, increases the voltage to be applied to the coil based on a control signal calculated from an actual rotation speed, in a case where the actual rotation speed is lower than the predetermined rotation speed when the estimated rotation speed becomes higher than the predetermined rotation speed, and decreases the voltage to be applied to the coil based on a control signal calculated from the actual rotation speed, in a case where the actual rotation speed is higher than the predetermined rotation speed when the estimated rotation speed becomes higher than the predetermined rotation speed.

Abstract: A control device is provided for controlling a rotation speed of an electric oil pump, including a motor and a pump mechanism connected to the motor, based on a command value input from a host device. The control device includes: a first calculator calculating a first duty value of current to be output to the motor based on a deviation between the command value and a rotation speed of the motor; a second calculator calculating a second duty value of current to be output to the motor based on a deviation between a current limit value of the motor and a current value of the motor; and a drive current determiner comparing the first duty value calculated by the first calculator and the second duty value calculated by the second calculator, and selecting the lower duty value as a duty value of current that drives the motor.

Abstract: A measuring device and measuring system which accurately measure a pulse wave propagation velocity. The measuring instrument includes: a fixing part attachable to and detachable from a subject; a first piezoelectric sensor fixed to the fixing part; a second piezoelectric sensor fixed to the fixing part at a prescribed distance from the first piezoelectric sensor; and an analyzing part for calculating a pulse wave propagation velocity in the subject according to time difference between time of detection of peak voltage by the first piezoelectric sensor and time of detection of peak voltage by the second piezoelectric sensor, and the prescribed distance.

Abstract: A semiconductor device includes a first terminal receiving a first signal, a second terminal receiving a second signal, a noise extraction analysis unit extracting a signal of a specific frequency component from the first and the second signal, a feedback unit generating a feedback signal based on a magnitude of the signal of the specific frequency component to cancel the signal of the specific frequency component superimposed on the first and the second signal, and third terminal outputting to the feedback signal to outside.

Abstract: A motor driving device for driving a motor is provided. The motor driving device includes: a driver outputting a drive signal for driving the motor to the motor; and a controller controlling a duty ratio of the drive signal based on three control parameters which are an initial duty ratio, a duty ratio increasing speed, and a target duty ratio. The controller has a normal control mode in which each of the three control parameters is a predetermined value, and a cryogenic control mode in which at least one of the three control parameters is a smaller value than in the normal control mode.

Abstract: A control device for a motor unit provided in a vehicle is disclosed. The motor unit includes a motor including multiple coils provided side by side around a motor axis; a transmission mechanism transmitting power of the motor to an axle; a housing housing the motor and the transmission mechanism; an electric oil pump delivering oil stored in the housing; and a coil temperature sensor detecting a temperature of the coil. The control device includes a motor controller driving and controlling the motor; and a pump controller driving and controlling the electric oil pump. The pump controller estimates an oil temperature according to an ambient temperature and the temperature of the coil, and determines a start timing of the electric oil pump based on an estimated oil temperature.

Abstract: A control device is provided for controlling a rotation speed of an electric oil pump, including a motor and a pump mechanism connected to the motor, based on a command value input from a host device. The control device includes: a first calculator calculating a first duty value of current to be output to the motor based on a deviation between the command value and a rotation speed of the motor; a second calculator calculating a second duty value of current to be output to the motor based on a deviation between a current limit value of the motor and a current value of the motor; and a drive current determiner comparing the first duty value calculated by the first calculator and the second duty value calculated by the second calculator, and selecting the lower duty value as a duty value of current that drives the motor.

Abstract: A control device to control a motor includes a stator including a coil, a rotor including a permanent magnet, a detector that detects a rotational position of the rotor at every predetermined angle and outputs a position signal indicating the detected rotational position, and a controller that receives the position signal output by the detector and adjusts a duty ratio of a driving signal of the rotor by a pulse width modulation scheme based on the received position signal to control rotation of the rotor. The controller raises the duty ratio from a first duty ratio, starting from a point in time at which the position signal is received, and returns the raised duty ratio to the first duty ratio when a next position signal has been received.

Abstract: An information processing device includes: a storage unit; a first display control unit; and a demanding unit. The storage unit that stores attribute data representing specified attribute of contents and category data representing a category of the attribute correlated to each other. The first display control unit that provides controls for displaying information for a selected attribute and for displaying, in a categorized state, information for related attributes correlated to the same category as that of the attribute on a correlation display screen. The demanding unit that demands data search by referring to the correlated attribute selected corresponding to information selected from among those displayed on the correlation display screen to an information provision device.

Abstract: A controller of a motor control device increases a voltage to be applied to a coil based on a control signal calculated from an estimated rotation speed, when the estimated rotation speed becomes equal to or lower than a predetermined rotation speed, increases the voltage to be applied to the coil based on a control signal calculated from an actual rotation speed, in a case where the actual rotation speed is lower than the predetermined rotation speed when the estimated rotation speed becomes higher than the predetermined rotation speed, and decreases the voltage to be applied to the coil based on a control signal calculated from the actual rotation speed, in a case where the actual rotation speed is higher than the predetermined rotation speed when the estimated rotation speed becomes higher than the predetermined rotation speed.

Abstract: A measuring device and measuring system which accurately measure a pulse wave propagation velocity. The measuring instrument includes: a fixing part attachable to and detachable from a subject; a first piezoelectric sensor fixed to the fixing part; a second piezoelectric sensor fixed to the fixing part at a prescribed distance from the first piezoelectric sensor; and an analyzing part for calculating a pulse wave propagation velocity in the subject according to time difference between time of detection of peak voltage by the first piezoelectric sensor and time of detection of peak voltage by the second piezoelectric sensor, and the prescribed distance.