| 摘要 |
A method for control of a two-motor propulsion power installation of helicopter is proposed, this is in calculation of deflections of parameters of operation of the GTU that is controlled from set values, selection of maximal value of deflection in selector of minimum, formation of set value of fuel flow rate according to the deflection chosen and support of set flow rate of fuel. Calculation of deflections of parameters of operation of the GTU that is controlled is carried out with use of common controller, and selection of parameter that is controlled is performed by means of inversed selector of minimum, at that the values of deflections of parameters of operation of the GTU from set values are corrected for compensation of differences in static and dynamical properties of parameters according to mathematical model of the motor with additional account of presence of the channel of acceleration control that is larger by order compared to the derivative in differential equipment, and at substantial deflections of parameters of operation of the GTU from set values with hysteresis acceleration controller is switched on in forced way, and at small deflections smooth control of parameters of operation of the motor is performed. Besides that, additionally synchronization of powers of the motors of helicopter is performed due to symmetrical correction, with different directions for the both GTU, of set values of frequencies of rotation of free turbines, and at failure of information exchange the values of deflection of torque from rated value are used for synchronization, and operation of neighboring motor is detected with use of mathematical model, besides that, additionally control of failures of the elements of the ACS (automatic control system) is performed, and under condition of failure of measuring channels value of parameters that are obtained from the second ACS control channel are used without transfer of control function to it, and under conditions of renewal of operability of the measuring channel the values of parameters measured by it are used, under condition of renewal of operability of the channel for control of fuel flow rate (at condition of algorithmic reveal of failure only) it is used in the case of failure of the channel of fuel flow rate in the other control channel of the ACS. |
