Abstract: A controller for controlling an electric motor module equipped with incremental encoder and operation method thereof are provided. The controller includes a quadruple frequency circuit, a driver circuit, a non-volatile memory (NVM) and a multi-phase control circuit. The multi-phase control circuit can perform multi-phase control with aid of the NVM, for example: reading an offset counter value from the NVM; executing an initial angle estimation procedure, generating an initial counter value according to an estimated initial angle and the offset counter value, and starting utilizing the driver circuit to directly control the electric motor to start with the estimated initial angle and utilizing a counter to perform counting operations; calculating a counter value error and clear the current counter value to be zero; and performing compensation corresponding to a predetermined compensation times count according to the counter value error, respectively, to control the rotor to reach a target angle.

Abstract: A power converter to supply power to each phase of a three-phase motor includes a booster circuit connected to a DC power supply to boost an input voltage input from the DC power supply in response to a pulse width modulation boosting signal, an inverter connected to the booster circuit and including a three-phase switching circuit including switches, and an output connected to the three-phase switching circuit to supply power to each phase of the three-phase motor, and a controller to output the pulse width modulation boosting signal to the booster circuit and output the pulse width modulation boosting signal to the booster circuit when detecting that the booster circuit is in a boosted state.

Abstract: A flexible dry electrode and the manufacturing method thereof are provided. The electrode has an electroplated uneven surface and at least one hole and is made of porous material.

Abstract: A signal sensing apparatus eliminating noise is provided, having at least a first class signal sensor for receiving at least a first class signal, at least a second class signal sensor for receiving at least a second class signal, a signal receiver for receiving a signal, wherein the signal comprises at least a noise; and a master-slave multiple noise eliminator for performing a multiple adaptive filter algorithm to eliminate noise in the signal by using one of the at least a first class signal or second class signal as a master signal and one of the at least a first class signal or second class signal not used as a master signal as a slave signal.

Abstract: A flexible dry electrode and the manufacturing method thereof are provided. The electrode has an electroplated uneven surface and at least one hole and is made of porous material.