Control method and control device for a hybrid turbine engine

A control device for controlling a hybrid turbomachine, the device comprising:

• an input configured to receive a sequence of measurements of the speed of a low-pressure shaft of the hybrid turbomachine and a sequence of measurements of the speed of a high-pressure shaft of the hybrid turbomachine,
• a memory configured to record the sequence of measurements of the speed of the low-pressure shaft, the sequence of measurements of the speed of the high-pressure shaft (4) and a sequence of setpoints of the speed of the low-pressure shaft,
• an electronic controller configured to determine a sequence of deviations, each deviation being a difference between a measurement of the sequence of measurements of the speed of the low-pressure shaft, and a setpoint of the sequence of setpoints of the speed of the low-pressure shaft, the electronic controller being configured to determine a variation of fuel flow rate and a variation of electrical torque, the electrical torque being configured to be applied to the low-pressure shaft, the electronic controller being configured, in order to determine the variation of fuel flow rate and the variation of electrical torque, the to use a difference in high-pressure speed between a last measurement and a penultimate measurement of the sequence of measurements of the speed of the high-pressure shaft, a difference in low-pressure speed between a last measurement and a penultimate measurement of a sequence of measurements of the speed of the low-pressure shaft, a last deviation of the sequence of deviations, the last deviation being temporally associated with the last measurement of the speed of the low-pressure shaft, and a sum of the deviations of the sequence of deviations;
• and
• an output configured to supply a command to the hybrid turbomachine.