Research On Control Method To The Double Function Flywheel

The double function flywheel energy storage and attitude control system is a kind of integrated energy storage and attitude control equipment that is developing rapidly in recent years. It is a complicated system composed of optics, mechanism and electronics. Basing on theories and experiments, the following respects have been studied deeply for IPACS in this paper: decoupling of energy storage and attitude control, effective measurement method of feedback speed, effective control strategies, and system errors.The feasibility and significance of using flywheels to provide energy storage and attitude control simultaneously are discussed, as well as the developing status and trend in the domestic and foreign are described. The design methods of controller used in single axis flywheel energy storage and attitude control system are given. The basic structure and work principle of single axis attitude control system with double function flywheels are introduced simply.In system, the validity of feedback speed measurement method and accuracy of feedback elements affect control performance greatly. A kind of speed measurement method is put forward basing on the analysis of errors and insufficiencies of traditional speed measurement methods. Consequently, the corresponding speed measurement system with the advantages of high precision and wide range has been designed, which can meet the demand of the integrated flywheel energy storage and attitude control system.Some problems in the experiment of energy storage and attitude control are discussed. According to those problems, the difference between the up flywheel-electrical machinery unit and the down unit are compensated through the series correction; the PID compound control algorithm with integral separation and formula partition is put forward. The system control precision is increased greatly, and overshoot is restrained effectively at the same time. As a result, system control effect is content terrifically. In the experiment of energy release and attitude control, the stable control is realized in high speed and wide range by using controllable constant current circuit and PD control algorithm.The primary factors that influence system attitude control precision are analyzed. The equations between platform angular error and every influence factor are done, respectively. And then every piece of errors is compounded. The experiment system being combined...