Approved for public release, distribution is unlimited / The U.S. Army uses a Unit Readiness Index to track the combat readiness of systems. The Unit Readiness Index relies on the accuracy of automated and manual testing of the hardware and related software of the Line Replaceable Units (LRUs) that comprise the system. These tests are based on a GO/NOGO scenario. When an LRU fails, vehicle commanders, and commanders up the chain of command, can override the failure and continue with a mission. Overriding the NOGO recommendations produces a false combat readiness status for the unit, and creates a number of problems related to unit combat decisions as well as logistical support. This thesis introduces a new process for more effectively tracking combat readiness. It outlines some of the problems associated with the current GO/NOGO scenario and examines the current tests, artifacts and data available from the current process. It proposes an additional Report process and shows how this new process will eliminate the readiness tracking problems associated with the GO/NOGO scenario. It also presents the design of a Vehicle Database and Master Fault Database to support the proposed process, and presents several sample reports generated from this Master Fault Database. / Civilian, United States Army RDECOM - TARDEC

<p>Försvarsmakten har under de senaste åren gått igenom radikala förändringar, som fortfarande inte är klara. Samtidigt som fokus ligger på personalförsörjning samt annat så går den teknologiska utvecklingen framåt. Jag vill med denna uppsats belysa vad ett gemensamt geografiskt informationssystem skulle kunna innebära för chefer på en lägre nivå inom mekaniserade bataljoner. Med denna uppsatts vill jag skapa förståelse utav gemensamma geografiska informationssystem och vilka möjligheter de skulle kunna bidra med. I uppsatsen tar jag reda på om systemen skulle kunna underlätta för chefer i sitt ledarskap på slagfälten, likväl vilka effekter det stridstekniskt skulle kunna bidra med. Jag tar också reda på om Försvarsmakten med dagens materiell och teknologi kan uppbringa ett sådant system. Slutsatsen som dras är att Försvarsmakten inte med dagens materiell kan uppbringa ett sådant system, materielen är föråldrad och den främsta begränsningen är dataöverförningskapacitet. Andra slutsatser är att system som dessa underlättar för chefer ur flertalet perspektiv. Främst så skulle systemen kunna bidraga till högre stridseffektivitet och underlätta för så kallade mixade förband.</p> / <p>The Swedish Armed forces have under the past years gone through some radical changes and some of them are still going on. As focus is set on manpower, the technologic development moves forward. I want to highlight what a common graphical information system could mean to commanders on lower command level at mechanized units. With this essay I want to create an understanding of common geographical information systems and what opportunities it could help with. In the essay I will find out if the systems could favor commanders in their leadership on the battlefield, as well which effects it could have on battle tactics. I also find out if the Swedish Armed forces with today’s equipment could procure such a system. Conclusions of the essay is that the Swedish Armed forces cant with today’s equipment procure such an system, because of the equipments obsolete status and the prominent restriction is data transfer rate. Other conclusions are that systems like these favor commanders in several perspectives. Most prominent, could system like these contribute to higher battle efficiency and favor for mechanized- mixed unit types.</p>

Försvarsmakten har under de senaste åren gått igenom radikala förändringar, som fortfarande inte är klara. Samtidigt som fokus ligger på personalförsörjning samt annat så går den teknologiska utvecklingen framåt. Jag vill med denna uppsats belysa vad ett gemensamt geografiskt informationssystem skulle kunna innebära för chefer på en lägre nivå inom mekaniserade bataljoner. Med denna uppsatts vill jag skapa förståelse utav gemensamma geografiska informationssystem och vilka möjligheter de skulle kunna bidra med. I uppsatsen tar jag reda på om systemen skulle kunna underlätta för chefer i sitt ledarskap på slagfälten, likväl vilka effekter det stridstekniskt skulle kunna bidra med. Jag tar också reda på om Försvarsmakten med dagens materiell och teknologi kan uppbringa ett sådant system. Slutsatsen som dras är att Försvarsmakten inte med dagens materiell kan uppbringa ett sådant system, materielen är föråldrad och den främsta begränsningen är dataöverförningskapacitet. Andra slutsatser är att system som dessa underlättar för chefer ur flertalet perspektiv. Främst så skulle systemen kunna bidraga till högre stridseffektivitet och underlätta för så kallade mixade förband. / The Swedish Armed forces have under the past years gone through some radical changes and some of them are still going on. As focus is set on manpower, the technologic development moves forward. I want to highlight what a common graphical information system could mean to commanders on lower command level at mechanized units. With this essay I want to create an understanding of common geographical information systems and what opportunities it could help with. In the essay I will find out if the systems could favor commanders in their leadership on the battlefield, as well which effects it could have on battle tactics. I also find out if the Swedish Armed forces with today’s equipment could procure such a system. Conclusions of the essay is that the Swedish Armed forces cant with today’s equipment procure such an system, because of the equipments obsolete status and the prominent restriction is data transfer rate. Other conclusions are that systems like these favor commanders in several perspectives. Most prominent, could system like these contribute to higher battle efficiency and favor for mechanized- mixed unit types.

In this study, a parametric model for a main battle tank electric gun turret drive system stabilization controller has been developed. Main scope was the study of the muzzle deviation due to barrel flexibility. Traverse and elevation dynamics has been modeled to include the drive-line and barrel flexibilities. Order of the models has been kept large enough to cover the frequencies dominant in the interest scope but at the same time low enough to create a parametric model which can be used in real-time fire control computers. Therefore a 5-dof elevation and a 7-dof traverse models have been implemented. These models have been used to design a classical feedback and feedforward controllers which performed good enough to meet 0.5mrad stabilization accuracies. After satisfactory results have been obtained from the stabilization controller, a special coincidence algorithm has been implemented by time-series analysis of the disturbance signal which is constantly being measured by the feedforward gyro. Necessity of predicting the future muzzle angular orientation due to the latency in fire is discussed and by using autoregressive modeling of the disturbance signal, future values of the disturbance signal has been entered into the observer model. The prediction horizon has been set to the time delay value between the trigger is pulled by the gunner and the ammunition exit from the muzzle. By checking the future coincidence within a very narrow windowing (0.05mrad) a 100% first round hit probability in theory has been achieved. This is assured since the coincidence inhibited the fire signals which were to miss the aiming point with a large error.

The aim of the thesis was to implement and compare control methods in a model of a main battle tank. Three controllers were implemented in a two axis gimbal model and their performances were compared. The comparisons were performed using step changes in the reference signal, frequency analysis of an oscillating reference signal and disturbances, and turret mass uncertainties. The results showed that the sliding mode controller had the best performance for both reference changes and disturbance attenuation. The PID controller had a better performance for the change in reference, compared to the model predictive controller, but a significantly worse disturbance attenuation. Due to model approximations, such as assuming ideal engines and noise reduction, the results likely show a better performance than what can be expected if applied on a real main battle tank. Therefore, the results show an upper limit of the stabilization performance of turret and barrel control and should only be used to compare the controllers. / Målet med uppsatsen var att implementera och jämföra reglermetoder för en teoretisk modell av en modern stridsvagn. Tre metoder implementerades i ett tvåaxligt gimbalsystem och deras prestanda utvärderades. Mer specifikt utvärderades regulatorernas respons för en referensändring, en referensstörning och osäkerheter i tornets massa och massfördelning. Utifrån dessa resultat jämfördes sedan reglermetoderna. Resultaten visade att sliding mode regulatorn hade bäst prestanda för både referensändring och referensstörningen när man tittar på frekvensanalys av mät- och processstörningar. PID-regulatorn hade en bättre prestanda än MPC-regulatorn för en referensändring men en sämre respons för en referensstö-rning. På grund av modellförenklingar som till exempel antaganden om ideala motorer och brusreduktion visar resultaten troligen en något bättre prestanda än vad som kan uppnås på en riktigt stridsvagn. Det medför att resultaten visar en övre gräns för vad styrsystemet för en stridsvagns torn- och eldrörsrotation kan uppnå.