Patent ID: 9037380
Filing Date: 2015-05-19
Classification: F02K,F05D

Abstract:
1. An adjustment device for adjusting at least one operating variable of an engine as a function of a setpoint, the device comprising: means for calculating a difference between a measurement of said at least one operating variable and said setpoint and if the calculated difference lies within a predetermined range then outputting an error value of zero otherwise outputting the error value equal to the calculated difference; a first quantizer configured to quantize an amplitude of said error value; means for determining a command duration as a function of a variation of said quantized error value amplitude; a second quantizer configured to quantize said determined command duration; and a sender unit configured to send a command of the bang-bang type in the form of a frame addressed to a port of an actuator configured to respond to a certain number of discrete commands, said command being a function of said quantized command duration and a sign of the variation of said quantized error value amplitude, wherein said frame has a predetermined duration, and is subdivided cyclically into a predetermined number of pairs of first and second fields, wherein each field is of a same field time duration, wherein the first field corresponds to a first operation of the actuator in a first rotation direction and the second field corresponds to a second operation of the actuator in a second rotation direction, wherein each field includes one of a first or second value for asserting or not asserting, respectively, said corresponding actuator operation for the corresponding field time duration, and wherein a number of fields including the first value in each frame is a function of the quantized command duration.