Facilities Techs Test-Drive Building Automation Simulators

Values at Work Series: Facilities Services developed our core values of Service, Integrity, Teamwork, Excellence, and Stewardship (collectively referred to as SITES) based on the way we approach our work. Our values can be found throughout our areas of services in many ways.Through a series of articles, the Values at Work Series is devoted to providing a closer look at how our values are hard at work. Each article focuses on an area of service and how that group incorporates our values in a significant way. We are proud of our employees who continue to serve as an example of “walking the talk” every day.The advent of direct digital controls (DDC) has propelled the technology, capability, and complexity of building operations forward over the last 15 years. The combination of DDC and intelligent operating systems combine to create a Building Automation System (BAS). A BAS centralizes the control of a building’s heating, ventilation and air conditioning (HVAC), lighting, and other systems. “Intelligent” buildings improve occupant comfort, provide efficient operation of the building systems, and reduce energy consumption and operating costs. However, they are much more complicated and technical than earlier control systems and require a new generation of employees who are computer literate and technically savvy to maintain and operate them.Facilities Service

Implementing SVPWM Technique to an Axial Flux Permanent Magnet Synchronous Motor Drive with Internal Model Current Controller

This paper presents a study of axial flux permanent magnet synchronous motor (AFPMSM) drive system. An internal model control (IMC) strategy is introduced to control the AFPMSM drive through currents, leading to an extension of PI control with integrators added in the off-diagonal elements to remove the cross-coupling effects between the applied voltages and stator currents in a feed-forward manner. The reference voltage is applied through a space vector pulse width modulation (SVPWM) unit. A diverse set of test scenarios has been realized to comparatively evaluate the state estimation of the sensor-less AFPMSM drive performances under the implemented IMCbased control regime using a SVPWM inverter. The resulting MATLAB simulation outcomes in the face of no-load, nominal load and speed reversal clearly illustrate the well-behaved performances of IMC controller and SVPWM technique to an Axial Flux PM Motor Drive system

A Study of Techniques for Calculating Motion Drive Signals for Flight Simulators

Development and evaluation of experimental test plan for solutions of motion drive problem in formation flying task with flight simulator

Vol. 3, issue 1

HELIN Conference “Solving the Puzzle” Test Drive iPads @ the Library Digital Commons: 1930 Commencement Video & More Faculty DVD: Michael Roberto Teaching Tools Sandbox Series IUG: San Francisco Will They Come? Google Apps for Education HELIN Database Trial

Initial test results with a single-cylinder rhombic-drive Stirling engine

A 6 kW (8 hp), single-cylinder, rhombic-drive Stirling engine was restored to operating condition, and preliminary characterization tests run with hydrogen and helium as the working gases. Initial tests show the engine brake specific fuel consumption (BSFC) with hydrogen working gas to be within the range of BSFC observed by the Army at Fort Belvoir, Virginia, in 1966. The minimum system specific fuel consumption (SFC) observed during the initial tests with hydrogen was 669 g/kW hr (1.1 lb/hpx hr), compared with 620 g/kWx hr (1.02 lb/hpx hr) for the Army tests. However, the engine output power for a given mean compression-space pressure was lower than for the Army tests. The observed output power at a working-space pressure of 5 MPa (725 psig) was 3.27 kW (4.39 hp) for the initial tests and 3.80 kW (5.09 hp) for the Army tests. As expected, the engine power with helium was substantially lower than with hydrogen

Wein bridge oscillator circuit

Circuit with minimum number of components provides stable outputs of 2 to 8 volts at frequencies of .001 to 100 kHz. Oscillator exhibits low power consumption, portability, simplicity, and drive capability, it has application as loudspeaker tester and audible alarm, as well as in laboratory and test generators

Drive train dynamic analysis

A method for parametric variations in drive train dynamic analysis is described. The method models the individual components of a drive system, forms the appropriate system interface coordinates and, calculates the system dynamic response at particular frequencies. Application of the method for prediction of the dynamic response characteristics of a helicopter transmission, and a comparison of results with test data are also included

Comparing test sets and criteria in the presence of test hypotheses and fault domains

A number of authors have considered the problem of comparing test sets and criteria. Ideally test sets are compared using a preorder with the property that test set T1 is at least as strong as T2 if whenever T2 determines that an implementation p is faulty, T1 will also determine that p is faulty. This notion can be extended to test criteria. However, it has been noted that very few test sets and criteria are comparable under such an ordering; instead orderings are based on weaker properties such as subsumes. This paper explores an alternative approach, in which comparisons are made in the presence of a test hypothesis or fault domain. This approach allows strong statements about fault detecting ability to be made and yet for a number of test sets and criteria to be comparable. It may also drive incremental test generation

PERANCANGAN SISTEM INFORMASI PENYEWAAN LAPANGAN BADMINTON DENGAN METODE PROTOTYPE

Badminton is popular in Indonesia because many Indonesian athletes perform at the international level. Therefore, the development of the rental of badminton fields should be supported by adequate facilities for the comfort of tenants, given the high business potential due to the large number of fans. The Wulung Crown Building is a versatile building that has three badminton fields, there are problems with the building because the information system is still unavailable, still conventional data processing and recording makes frequent occurrences of human errors, then for the administrator is rare to check the data of the rental report due to the distance. So based on these problems, the research is aimed at designing a prototype or system design by applying the method of prototyping that contains the stages of listen to customer, Build/Revise Mockup, Customer test drive mockup. And at the Customer test drive stage mockup using SUS testing (System usablitiy Scale) with Nielsen sampling technique that describes 5 respondents enough. With the test obtained an average score of 84.5, which indicates entering the acceptable category that indicates if it already meets the needs of the user without the need for any changes