The invention relates to a control method and
system for motor's tension force
curling zero
servo application. According to the invention, through the acquisition of a given torque before a driver is put into a zero
servo and making the torque of the driver the constant given torque, the tension force can be kept unchanged; after the driver is put into the zero
servo, the tension force can be steadily changed through the control of the motor to output
constant torque. Technically, following the acquisition of the feedback
excitation current and the feedback torque current of the motor, the no-load current and the core saturation coefficient as well as the given
excitation current of the motor are further obtained so as to acquire the deviation
voltage of the M-axis, and at the same time, the deviation
signal between the adjustment frequency and feedback frequency undergoes PI adjustment for the given torque current. The deviation
signal between the given torque current and the feedback torque current undergoes PI adjustment for the deviation
voltage of the T-axis. The deviation
voltage of the M-axis and the deviation voltage of the T-axis experience a series of changes, and then a driving
signal is obtained and exerted onto the motor. Therefore, a zero servo motor is controlled.