Human-machine interfaces influence both operator effectiveness and machine efficiency. Further immersion of the operator into the machine’s working environment gives the operator a better feel for the status of the machine and its working conditions. With this knowledge, operators can more efficiently control machines. The use of multi-modal HMIs involving haptics, sound, and visual feedback can immerse the operator into the machine’s environment and provide assistive clues about the state of the machine. This thesis develops a realistic excavator model that mimics a mini-excavator’s dynamics and soil interaction during digging tasks. A realistic graphical interface is written that exceeds the quality of current academic simulators. The graphical interface and new HMI are placed together with a model of the excavator’s mechanical and hydraulic dynamics into an operator workstation. Two coordinated control schemes are developed on an haptic display for a mini-excavator and preliminary tests are run to measure increases in operator effectiveness and machine efficiency.

Vlastimil Novak Motor pump control unit DW, IAE, 2008, 48 pp. 54 fig. The terget of diploma work is measure od progression of vibration on motor pump control unit of electro-hydraulic servo unit placed on a vehicle. At first, a proposal of testing of vehicle for given characteristics have been created and placement of sensors and compare measured data of load of control unit in different vehicle ride modes.

I detta arbete utvärderas och jämförs de i dagsläget aktuella teknikerna för automatisering av avloppspumpstationer. Utifrån undersökningen kommer en rekommendation av ett system göras som sedan ska kon-strueras och monteras ihop. Arbetet visar att trots energivinsterna som en extra investering i form av reglering ger så lönar det sig sällan om man inte byter pump samtidigt. Vid byte av pump kan man välja en pump som klarar det maximala flödet men samtidigt arbetar med högst effektivitet vid det vanligaste flödet. Då pumpar i avloppstationer ofta är överdimensionerade med avseende på det vanligaste flödet betyder en nedreglering att pumpen hamnar för långt bort från konstruktions-punkten. Pumpen får då sämre verkningsgrad och efter en viss punkt klara pumpen att inte av att överstiga det statiska motståndet och där-med inte skapa något flöde alls. Av dessa anledningar rekommenderas av/på-styrning vilket är den ledande tekniken idag / In this report the currently leading technologies for automation of sewage pump stations will be evaluated and compared. Based on this comparison a recommendation of a design will be done and the chosen control system will finally be assembled in a cabinet. The report shows that even thou there are energy savings to be done by using variable frequency drives it is rarely possible unless pumps are changed at the same time. When pumps are changed at the same time you have the opportunity to pick a pump that can handle the maximum inflow but at the same time have its best efficiency  point at lower speed. Pumps in sewage pump stations are often over dimensioned with regards to the most common inflow, lowering the speed will in this case result in lower efficiency and more losses. At one point the pump will not be able to overcome the static pressure in the system and will fail to produce any flow. Due to these reasons on/off control will be recommended which also is the most common method of today.

Systematické řízení tepelných a elektrických toků v plně elektrických automobilech se stává velmi důležitým, protože v těchto typech automobilů není k dispozici dostatek odpadního tepla pro vytápění kabiny. Aby v zimním období nedocházelo ke snížení dojezdu, je nutné použití technologií, které umožní snížení spotřeby energie nutné k vytápění kabiny (např. tepelné čerpadlo, zásobník tepla). Je také zapotřebí vytvořit řídicí algoritmy pro tato zařízení, aby byl zajištěn jejich optimální provoz. V letním období je nezbytné řídit tepelné toky v rámci elektromobilu tak, aby nedocházelo k nadměrnému vybíjení baterie kvůli chlazení kabiny a dalších částí. Tato práce řeší jak návrh řídicích algoritmů, tak i vývoj rozhodovacího algoritmu, který zajistí směřování tepelných toků.