The invention relates to a rapid high-precision relative pointing control method of a noncoplanar rendezvous
orbit, in particular to a feedforward PID (proportion, integration and differentiation) control based rapid high-precision relative pointing control method of the noncoplanar rendezvous
orbit, and aims to solve the problem that rapid high-precision tracking-pointing control methods related to
satellite attitudes under the noncoplanar rendezvous
orbit do not exist in the prior art. The feedforward PID control based rapid high-precision relative pointing control method including adopting an Euler angle for attitude description of a
spacecraft, creating dynamical and kinematical equations of the
spacecraft, and acquiring an precise expected angle theta according to a
noise-containing expected angle z by a
Kalman filtering algorithm of a spaceborne computer; designing an
attitude control law of each axis according to a formula of ; selecting two parallelly-placed single-frame control moment gyroscopes to control a
yaw axis, and selecting two flywheels to control a rolling axis and a
pitch axis respectively; calculating
gyroscopic moment T and
flywheel actual output moment uw to complete rapid high-precision relative pointing control of the noncoplanar rendezvous orbit. The feedforward PID control based rapid high-precision relative pointing control method is applicable to rapid high-precision relative pointing control of the noncoplanar rendezvous orbit.