Motor driving system compatible with different types of encoders

A system for driving a motor comprising:

• at least one differential amplifier capable of receiving differential digital signals from a first motor feed back device, and differential analog signals from a second motor feed back device selectively, the at least one differential amplifier is capable of outputting a first count pulse signal according to the differential digital signals, and outputting an analog signal according to the differential analog signals;
• at least one comparator capable of converting the analog signal into a second count pulse signal, and transmitting the first count pulse signal or the second count pulse signal to an external computing device;
• and
• a transmitting device capable of converting data signals from a third motor feed back device to a binary code and outputting the binary code to the computing device, and converting differential reference digital signals from the first feed back device or the second feed back device to a reference digital pulse signal to indicate a home position on the first feed back device or the second feed back device and outputting the reference digital signals to the computing device;
• wherein the computing device is capable of calculating parameters of the motor according to the received signals.

A motor driving system compatible for different types of encoders, the motor driving system comprising:

• a first input port and a second configured to be connected to an encoder;
• wherein the first input port receives a pair of differential digital pulse signals from the encoder in response to the encoder being an incremental encoder, and a pair of differential analog signals from the encoder in response to the encoder being a Sine/Cosine encoder;
• wherein the second input port receives a pair of differential data signals from the encoder in response to the encoder being an absolute encoder, or a pair of differential reference digital pulse signals in response to the encoder being one of the incremental encoder and the absolute encoder;
• a differential amplifier comprising an input acting as the first input port, and configured for converting the pair of differential digital pulse signals to a first count pulse signal relates to a motion speed of a motor, or converting the pair of differential analog signals to an analog signal;
• a comparator configured to transmit the first count pulse signal to an external computing device, or convert the analog signal to a second count pulse signal relates to the motion speed of a motor, wherein the second count pulse signal is received by the computing device;
• a transmitting device comprising an input acting as the second input port, and configured to convert the pair of differential data signals into a data value which is received by the computing device to indicate an actual position of the motor, or convert the pair of differential reference digital pulse signals to a reference digital pulse signal which is received by the computing device to indicate a zero position on the encoder.