Patent attributes
In the gas-turbine engine control system having a first control inputting the outputs of sensors and controlling supply of fuel to the engine based on at least one of the inputted outputs, the first control channel includes a comparator inputting the outputs generated by the sensors and comparing change rates of the outputs with corresponding threshold values once every predetermined time period, and a transient/steady-state discriminator discriminating that the engine is in a transient state when the number of the outputs found to be equal to or greater than the corresponding threshold values are equal to or greater than a predetermined value, while discriminating that the engine is in a steady state when the number of times that the outputs are found to be smaller than the threshold values is more than half of number of comparison time. With this, it becomes possible to discriminate whether the engine is in a steady state or in a transient state including acceleration, without being affected by noise or the like.
