Research On Test Plan Of Gyro Accelerometer Tested On Precision Centrifuge

T h e PI G A (Pe n du lo us I nt e g r a ti n g G yro Accel e ro m e t e r) is w id e ly us e d in th ein e r t ia l n a v ig at io n a nd in er ti a l gu id a n c e c on t r o l sy s te m o f t h e s t r a t e g i c mi s s il e g ui d an c e, b e c a us e o f th e it s h ig h a c c ur a c y. T h e a c cu r a cy of PI GA d e t e r mi n e s t h e p e r f o r ma n c e o fth e in e r ti a l n a v ig at i o n a nd in e r ti a l gu id an c e co n tr o l sy s te m, th e a c cu r a cy a n d th ed a ma g e o f th e st r a te g ic mi s s i l e gu id a n c e. T he accu racy of PI G A is b a se d on it s mo d e lc o e f f ic ie n ts, w h ic h a r e us u a ll y c a li b r at e d by th e pr e c is i o n c e n t r if u g e. S o th e r e se a r c h o fPI G A te st me th o d on p r e ci s i o n cent r if u ge is si g n if ic an t.T h e st a ti c e r r or mo de l e q ua ti o n o f PI GA is d er iv e d,w h o se e v e r y e r r or c o e f f ic ie n th a s c le a r ph ys ic a l me a ni n g. T h e mo de l e q u a ti o n in c lu de s th e e r r or a ng le b e tw e en in s i d ea nd o ut s i d e f r a me w o r k a n d th e a dd it i o n a l e rr o r c a u se d b y i t, th e n t h e i r e qu a ti o n a n dv a r ia ti o n is r e se a r c h e d, w h ic h is th e b ase o f th e r e se ar c h o f th e c a l i b r a ti o n a c c ur a c yin f lu e n c e d b y th e m.T h e a c c el e r a ti o n in c lu d in g Co r io li s accel e rat i o n a n d a ng u l a r v e l oc i t y o f P I GA a r er e c iv e d b y A c e le r at i o n sy n th e si s th eo r e m and Att i t u d e t r a n s f o r m at i o n ma tr ix w h e nc o n si d e r in g th e in i t ia l p o si t i o n er ror s a n d co n in g a ng l e e r r o rs o f pr e c is i o nc e nt r if u ge. T h e si m p le mo d e l e q ua ti o n u se d f o r c a li b rat i o n is ga in e d w i t h t h e ti m e o f th esp i n dl e a r m r o ta te in te g r a l c ir cle an d h a lf c ir cle wh ic h is th e b a se o f th e d e si g n a n dsi m u la ti o n o f PI GA te st on p r e c is i o n c e n tr if u g e.T h e pr a d it i o n se a r c h a n d pa tt e r n se a rch ar e app li e d i n t he D-o pt i m a l te st p la n.T h e nth r e e te st a r e d e si g n e d b y D-o p ti m a l te st p la n, na me ly P I GA tu mb le te st on th eh or iz o n ta l a xi s o f pr e c is i o n c e n tr if u g e, PI GA mu lt i p o s i o n te s t o f th e sp in d le a r mr ot a ti n g in te g r a l c ir c le a nd h a lf c ir cle. PI GA tu mb l e te st i s i n1g g r a v i t a t i o n a l f ie ld us e df o r th e c a li b r a ti o n o f z e r o d e g r ee a n d f ir st d eg r e e o f e r r o r c o e f f i c ie n ts. P I GA mu lt i p o si o n te st o f th e sp i n d le ar m r ot a ti n g in te g ra l c ir c l e a n d h a lf c i r c le c a n p r o vi d e ah ig h a c ce le ra ti o n to PI GA a n d th e se c on d d eg re e an d th i r d d e g r e e o f e r r o r c o e f f ic ie n ts c a n b e id e n ti f ie d.T h e n th e e a c h st e p of te st p la n is d esi g n e d.T he si m u la ti o n o f th e th r e e te st, n ame ly PI GA tu mb le te s t o n th e h o r iz o n ta l a xi s o fp r e c is i o n c e n tr if u g e, PI G A mu lt i p o si o n te st of th e sp in d l e a r m r o t a t i ng in te g r a l c ir c le a nd h a lf c ir c le, is p e r f o r ma n c ed an d th e in flu en ce of th e e r r or a n gl e b e t w e e n in si d e a n do u ts i d e f r a me w or k a nd th e a d di t i o n a l e rr o r caus e d by it is a na l yz ed.