Patent ID: 8816830

Claim:
A motor control system, in which a motor is controlled through a power line, and the power line supplies the motor power in the same time, comprising: a control apparatus including a controller and a first communication module electrically connected to the controller, wherein the controller receives a command and converts the command into electrical control signals, and the first communication module receives the electrical control signals from the controller and transmits the electrical control signals to the power line; and an actuation apparatus including a second communication module and a motor actuator electrically connected to the second communication module and the motor, wherein the second communication module is connected to the power line to receive the electrical control signals from the control apparatus and convert the electrical control signals into a command, and the motor actuator receives the command from the second communication module to control the motor; wherein the first communication module includes a first processor and a first digital analog converter, wherein the first processor receives the electrical control signals from the controller to control the first digital analog converter to convert the electrical control signals from digital signals to analog signals, and the second communication module includes a second analog digital converter and a second processor, wherein the second analog digital converter the analog electrical control signals from the power line into digital electrical control signals, and the second processor receives the digital electrical control signals from the second analog digital converter to control the motor actuator according to the digital electrical control signals; and wherein the first communication further includes a low-pass filter, a first programmable gain driver, and a first coupling transformer, wherein the first low-pass filter filters the analog electrical control signals from the first digital analog convert, and the first programmable gain driver stabilizes the analog electrical control signals from the first low-pass filter filters by adjusting gains, and the coupling transformer transmits the analog electrical control signals from the first programmable gain driver to the power line; the second communication module further includes a second coupling transformer, a second band-pass filter, and a second programmable gain amplifier, wherein the second coupling transformer receives the analog electrical control signals from the power line, and the second band-pass filter filters the analog electrical control signals from the second coupling transformer, and the second programmable gain amplifier stabilizes the analog electrical control signals from the second band-pass filter by adjusting gains, and then transmits the analog electrical control signals to the second analog digital converter.