void WriteOneMotorCommand(float Comm, int index)
		{
			char str[70];
			std::string write_command;

			sprintf(str,"%dla%d\rm\r",index+1,(int)(Comm*COUNT_RATIO[index]));
			write_command = str;

			//printf("%f\n",Comm);

			if( !_sport._write((uchar* )write_command.c_str(),write_command.length()) )
			{
				printf("Error [Motor]: Cannot write command to motor %d suddenly\n",index);
				system("pause");
			}
		}