Abstract: A method of building a characteristic model includes: acquiring raw electrical data from a measurement system outside one or more processing units; acquiring operational state-related data from an information collector inside the one or more processing units; performing a data annealing process on the raw electrical data and the operational state-related data to obtain and purified electrical data and purified operational state-related data; and performing a machine learning (ML)-based process to build the characteristic model based on the purified electrical data and the purified operational state-related data.

Abstract: A system and a method for controlling a sensorless motor are disclosed, where the system includes a motor driver and a zero-crossing detector. The motor driver can drive the sensorless motor. The zero-crossing detector can detect a zero-crossing point when the voltage of one motor coil of the sensorless motor is in a blanking period.

Abstract: An apparatus and a method for driving a sensorless motor are described and shown in the specification and drawings, where the method includes steps as follows. First, a control signal is acquired, where the control signal has information of a predetermined rotational speed. Next, energy is supplied and progressively increased to the sensorless motor, so as to rotate a rotor of the sensorless motor. Then, a position of the rotor is detected. Finally, the energy is gradually regulated so that the sensorless motor is maintained at the predetermined rotational speed.

Abstract: A system and a method for controlling a sensorless motor are disclosed, where the system includes a motor driver and a zero crossing detector. The motor driver can drive the sensorless motor. The zero crossing detector can detect a zero-crossing point when the voltage of one motor coil of the sensorless motor is in a blanking period.

Abstract: An apparatus and a method for driving a sensorless motor are described and shown in the specification and drawings, where the method includes steps as follows. First, a control signal is acquired, where the control signal has information of a predetermined rotational speed. Next, energy is supplied and progressively increased to the sensorless motor, so as to rotate a rotor of the sensorless motor. Then, a position of the rotor is detected. Finally, the energy is gradually regulated so that the sensorless motor is maintained at the predetermined rotational speed.

Abstract: A panel structure installed on an electric device. The electric device includes a circuit board including at least one indicating lamp for displaying actions and at least one button switch for inputting the default command. The panel structure includes a panel connected to the electric device for covering the circuit board, the panel including at least one slotting, and at least one button installed between the circuit board and the panel for matching the slotting. The button includes a prominent part, a pressing part extended from the bottom of the prominent part, and an elastic frame extended from the bottom of the prominent part, wherein the one end of the elastic frame is connected to the panel for holding the button slightly protruded from the slotting when the button is not being forced and for making the pressing part contact with the button switch when the button is being forced.