Activity tables for educational mobile applications are received. The activity tables list learning activities in the applications. Correlations of the learning activities to a set of education standards are received and an index based on the correlations is generated. A specification of an education standard a user wishes to satisfy is received. The index is scanned to identify which mobile applications have learning activities aligned to the specified education standard. User responses to the applications may be collected. Based on the user response and other usage data, the system may determine a user's level of achievement of the specified education standard.

In one embodiment, a system that stores information indicative of real-time locations of a wearable alert devices, receives information indicative of a potentially dangerous condition in a geographic area, determines which of the wearable alert devices are in the geographic area, and outputs alerts for transmittal to the wearable alert devices in the geographic area. In another embodiment, the system stores a user profile that associates a wearable alert device with a user and includes contact information for an emergency contact, receives information indicative of a real-time location of the wearable alert device and information indicating that the user of the wearable alert device is potentially experiencing an abnormal physiological condition, and outputs an alert for transmittal to the emergency contact that includes an indication that the user is potentially experiencing the abnormal physiological condition and the real-time location of the wearable alert device.

A drive axle system and a method of control. A control system determines a torque command based on an inverter temperature, a stator temperature of a stator of an electric motor, and a rotor temperature of a rotor of the electric motor. The electric motor is operated to provide torque based on the torque command.

A safety device for an actuator that can modulate power to an electric motor in response to a fault condition (e.g., stall). In one embodiment, the actuator can include a motor with a shaft, a sensor disposed in proximity to the shaft, and a control processor coupled with the sensor and the motor. The control processor can be configured to receive a signal from the sensor that conveys operating data that relates to rotation of the shaft, use the operating data to identify a fault condition on the motor, and change the motor from an energized condition to a de-energized condition in response to the fault condition.

Intelligent building control systems utilize sky information from a camera or cameras to facilitate control of building systems such as lighting, motorized window coverings, electrochromic glazings, HVAC systems, and so forth. In this manner, energy efficiency and occupant comfort and convenience are improved.

An alternating current (AC) motor system and control methods are provided herein. The AC motor system includes a motor having a first rated horsepower and configured to be coupled to a power source, and a drive circuit configured to be electrically coupled between the power source and the motor. The drive circuit has a second rated horsepower that is lower than the first rated horsepower.

The invention relates to a method for controlling a wiper device (10) by means of a control and/or regulating unit (12). At least one operating parameter is set dependent on at least one parameter which differs from a vehicle window coverage parameter.

A nanoscale wireless communication system and device operates via in-plane information transmission between a broadcast plasmonic antenna and a receiver plasmonic antenna which mediates a three-step conversion process (surface plasmon.fwdarw.photon.fwdarw.surface plasmon) with in-plane and in-phase efficiency (plasmon.fwdarw.plasmon) in the free-space excitation wavelength for antenna separations in the far-field.

The motor bearing wear state estimation device (5, 5A) estimates a wear state of bearings (32, 33) by using a plurality of detection coils (C1 to C8). The device includes a storage (56, 56A) storing a first learning model (M11, M21) and a second learning model (M12, M22), a retrieval unit (550) retrieving each signal, and an estimation unit (551) estimating the wear state by inputting a first difference signal, a second difference signal, and an amplitude signal into the first learning model, and by inputting a thrust difference signal and the amplitude signal into the second learning model. The amplitude signal is a first amplitude signal generated based on each detection signal of first radial detection coils and/or each detection signal of second radial detection coils, or a second amplitude signal generated based on a first combined signal and a second combined signal.

A power supply system is provided. The power supply system includes a power supply system comprises a first rectifier receiving an AC power from a first input AC power source, converting the AC power into a first DC power and outputting the first DC power to a connection node, one or more motors connected in parallel to the connection node, the motors being respectively connected to inverters converting the DC power provided from the connection node into an AC power to control the motors, and an auxiliary power source supplying a second DC power to the connection node when the supply of the first DC power is interrupted, or when an overload of the motors occurs.