PAK5.7. milestones set

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1 PAK5.7 milestones set Besides consistently developing the principle of Easy Measurement, the integration of new technologies sets the foundation for future measurement challenges. This focus on the efficiency of measurement and analysis establishes milestones on the path to future-oriented, sustainable measurement solutions which provide results in a very short time. 1

2 WHAT S NEW? NEW TECHNOLOGIES Intelligence in the measurement process Local Storage Saving measurements directly on the measurement device enhances the scalability of the PAK system. Raw time data is saved on the PAK MKII safely, reliably and with conceptually unlimited throughput rates. The foundation for this capability is laid with a local Solid- State Drive in our new generation of controllers and the user interface Easy Measurement. Local storage is characterized by permanent data recording, extensive protection against data loss, storage location and data storage independency. A perfect scenario where Local Storage benefits measurements is in distributed systems where the necessary or desired test positions can be easily executed. Local storage assures an added sustainability to the measurement, analyses and management of data and sets the course for upcoming projects at the same time. read more on pages 4 and 5 NEW METHODS Intelligence in analysis and evaluation FUNCTIONAL ENHANCEMENTS Must haves Ongoing enhancements in PAK offer excellent possibilities for easier, faster and more efficient task execution. Further developments in PAK 5.7 concentrate on the fields of graphics, geometry, ASAM ODS and the user interface Easy Measurement. Major infrastructure improvements have been implemented to increase overall efficiency and to establish foundations for future developments in operating systems, technologies and standards. Benefit from a standardized PAK system prepared for the years to come. read more on pages 8 and 9 Through the increasingly complex interaction of single components amongst themselves and with newer technologies, structural analyses become more and more important in order to detect vibroacoustic phenomena and to compensate with specific countermeasures. One of the most discussed methods is Transfer Path Analysis with its holistic tools for the consideration of the entire object. Besides the fundamental enhancements of Transfer Path Synthesis and Crosstalk Cancelation, additions like p-value, Response Modification Analysis and Panel Contribution Analysis complement the users analysis toolkit. The p-value displays the correlation between the principle components of excitation and response signals for an enhanced result-quality of transfer functions. p-value is a key figure based on the mathematical method of significance analysis. With this value, a threshold for significance is defined. In this way only the principle components which are relevant to the response signal are chosen. The Response Modification Analysis provides a more efficient way of working for the user when optimizing a structure. In doing so, the response signals of a transfer path analysis are subjected to systematic modifications. This results in changes in single transfer paths - from which the degree of the sensitivity of the paths to the desired change in the response signals is derived. In this way, conclusions on the acoustic and vibration design of components or entire systems can be made. Panel Contribution describes the acoustic characteristics of panels and supports users in identifying which panel area of a structure causes the relevant contributions to the overall sound at the response position. The partial area s specific transfer functions to sound pressure at a response position are determined here the description of sound characteristics at these panels is effected by sound pressure and sound particle velocity. read more on pages 6 and 7 2 3

3 LOCAL STORAGE For those who measure The demands for furthered data security in processes are constantly increasing. For reliability and life-cycle sustainability, data formats, processes and quantities are typically critical factors. To ensure that secure data acquisition and storage are even more sustainable, decentralized data storage systems and direct saving of data on the PAK MKII Local Storage have been integrated in PAK. Local Storage guarantees a fixed data rate per system. High-speed measurements with hundreds of channels and high throughput rates, which result in extremely high sum data rates, are easily addressed. Via the recorder function with decentralized data storage on either internal or external hard drives (SSDs), throughput data (raw time) is recorded by the PAK MKII. At the same time, users can selectively listen or view single channels (Eavesdropping) from the complete data stream in the online graphics. Local Storage provides the highest possible protection against data loss of non-repeatable or critical measurements. PAK software controls the measurement process and the networking of PAK MKIIs. The independent, simultaneous storage of measurement data on different data devices is executed by the PAK MKII frontend. Corresponding operational or fail-safe mechanisms allow transparent management of the data from the external storage devices. More than 1000 channels with khz in 24 bit Solid State Drive Therefore the measurement data recording continues regardless of interruptions during the measurement. Local Storage is recommended for a single system or for a network of several systems combined in clusters. When for example, 16 PAK MKII frontends are synchronized in a cluster, more than 1000 channels can be measured and recorded GHz Power PC processor, 1000 BASE-T ports, external drives for storage with khz sampling rate and 24-bit resolution without any transfer limitations. Local Storage is tightly integrated in PAK. Existing systems can easily be upgraded on-site to the latest generation of PAK MKII controllers and is already included in PAK 5.7 in the Easy Measurement interface. The management of decentralized data is executed in the PAK data view. ACCESSING LOCAL STORAGE Easy Measurement & PAK data view Specifically designed for intuitive operation, users are guided in the user interface Easy Measurement which contains all measurement settings. Before beginning a measurement, PAK checks automatically whether a measurement of the same name already exists; this check runs on every connected PAK MKII and/or on the measurement computer depending on where the data is being stored. As the measurement starts, measurement data is continuously stored (uninterrupted) as throughput data by the measurement frontend on the selected storage device. Measurement data can be recorded in parallel on both the computer and the PAK MKII. Integrated channel monitoring displays the overall status of single channels and the quality of existing signals. At the same time, users benefit from an overview window showing the remaining storage capacity and measurement time. The measurement can be stopped manually; alternatively the measurement will end automatically as defined in the measurement setup. From the data view, measurement data is managed and transferred to the analysis computer. The measurement data from multiple, clustered PAK MKIIs can be transferred to the computer in a single operation or separately in steps if required. Particular attention is paid to the consistency of data. Measurement data acquired in a cluster is recognized as being related and can be merged into a single measurement. With each data transfer the corresponding measurement information is updated. Users are provided with essential information for the data transfer, e.g. data rate per unit and sum data rate. All stored data on the PAK MKII is accessible from any PAK computer. Once the data from the Local Storage measurement is transferred onto the analysis computer, all analyses can be executed as usual. As always this data can be managed, analyzed and forwarded to other users within the engineering data portal (edp). THE NEW CONTROLLER GENERATION PQ30 and PQ30S The option for storing data directly onto the PAK MKII rank among the most important innovations of both PQ30 and PQ30S controllers. Solid-State Drives are available with different storage capacities. What do SSDs offer users? They are completely soundless and mechanically robust, boasting extremely short access times for data reading and writing. Combined with very low energy consumption and very high temperature tolerance, SSDs are a long lasting and an extremely fast storage solution. Both new controllers operate according to the latest 2eVME specifications and use GHz power PC processors. Continuous data rates of 40 MByte/s over 1000 BASE-T to the measurement computer are also convincing. The PQ30S includes an even more powerful processor and more memory which increases the performance when streaming data to the external drive or external PC running PAK. Using the fast charge option of the controller, the batteries of the PAK MKII frontends are charged in a very short time. At the same time both the input power protection circuitry for measurements within vehicles and the over-voltage / under-voltage lockout guarantee the highest security for the functionality of the measurement device. The optional esata port with power over esata allows the connection of external SATA disks. Configure easily. Measure independently. Evaluate decidedly. ENHANCEMENTS TO PAK MKII COMPONENTS In conjunction with the new controllers, the S series components including signal conditioning unit and modules (amongst others SC42S, ICP42S, ICT42S and ALO42S) result in an enhanced system performance regarding the sampling rate. Even in this extraordinarily compact form factor and high channel density, high-speed measurements of a constant khz sampling rate and 24-bit resolution is guaranteed. Adding to our wide range of signal conditioning modules is the newly available DCH42S module for use with differential piezoelectric charge sensors commonly found in measurements with an extremely wide temperature range, e.g. for vibration measurements on turbines. 4 5

4 Response Modification Analysis (RMA) For faster and more efficient engineering of the target sound, target-oriented tasks to adjust the structure can be derived by merging the TPA/S with acoustic design in the new Response Modification Analysis. In the RMA, the sounds of both the current development or series status of the test candidate are specifically modified and monitored. With this knowledge of the structural behavior, those sources and paths relevant to the desired changes of the sound are identified. In the previously known methods of transfer path analysis - including Crosstalk Cancelation (CTC) / Advanced Measurement Method (AMM) - only the dominant contributions or paths are determined. As the optimization of a single path influences the whole system, an integral system optimization proves to be difficult. TRANSPARENCY IN COMPLEX STRUCTURES A key factor in bringing a product to market is the experimental studies on sound design/ quality, vibrational comfort and strength. To achieve this in the most economical and efficient way possible, requires the implementation of the best tools and methods available. Often the focus relates to structural and acoustic analysis. Operational Transfer Path Analysis (OTPA) is a suitable tool for performing an effective contribution analysis based on operational data. Synthesized contributions can be played back, displayed in a network or simulated within the network. To broaden the use of TPA/S even more, several tools complement these functionalities most appropriately. from significant Benefit efficiency improvements with PAK s tailored tools. At this point, RMA complements CTC/AMM and is an analysis of involved paths and their influences on the response signal by considering the underlying movement patterns of the excitation. The structural coupling of the paths is included through the decomposition of movement-forms in the principle components in the CTC. With the modification of the system responses (e.g. local amplification or attenuation of the amplitude curve, lowering local order peaks), a modified data set of transfer functions is generated. From the differences between the two data sets, the paths or path combinations that cause the highest impact on the modification are identified. Through the knowledge of how a targeted modification of the measured system response influences the entire system, the systematic modification of (source-)paths is possible. These complex interrelationships illustrate the operation of acoustic and vibration behavior of the structure whilst allowing derivatives on the interpretation and design of components involved. Operational Deflection Shape Analysis complements RMA. By visualizing movement patterns, an understanding of the causes of structural excitations is shown. Panel Contribution Analysis Transfer Path Synthesis (TPS) TPS models the transfer paths of airborne and structure-borne sound in a network. From the graphic elements signal sources, transfer functions and crosstalk are displayed and linked together. For enhanced transparency, single paths are aggregated by grouping and saving channels in bundles and shown as a new object in the TPS network. The Demultiplexer Box separates the channel bundles again into single channels. Crosstalk Cancelation (CTC) and p-value New features now available include the option for graphically representing two response channels and calculating the difference between the first and second response. When determining transfer functions by taking the crosstalk into account, the data types Select Principle Components and Transfer complex (db difference) add to available options. Qualitative states for the crosstalk-compensated transfer specifications based on the Principle Component Analysis (PCA) can be easily deduced. Additionally users benefit from even more powerful calculation algorithms for processing the measured signals. To visualize the correlation between the principle components of the excitation signals and the particular response signals, the p-value method can be used. The p-value supports the user as an evaluation criterion for the relevant principle components within the Principle Component Analysis. From this defined significance threshold, only those principle components are taken into account which are relevant to the response signal. By considering how the principle components are correlated to the respective response signal, the quality of the resulting transfer functions from the CTC is improved. 6 The question of which panels of a structure transfer the relevant contributions to the overall sound at the response position can be easily answered by a Panel Contribution Analysis. For example for improving interior acoustics, users benefit from a method that summarizes the transfer functions of individual panels of an area-specific transfer function (e.g. driver s side footwell left). This transfer function can be used in a TPS network for determining the contributions of the panel to the respective response signal. Transfer functions between partial areas and response signals are reciprocally determined by excitation at the response position. In addition, the transfer functions between a reference signal and the partial areas are identified. The acoustic characteristics of sound pressure, particle velocity or sound energy flux on the panel are measured by an array of p-u probes. Moving the array along the test candidate is thereby possible. Thus, the area under investigation is divided into equal sections. The measurements at each sensor position deliver the contributions of the transfer functions. Supported arrays include amongst others the probe array from Microflown Technologies for which a p-u-calibration is also offered. During calibration, ascertained correction filter functions can be saved in the PAK Equipment Manager. The following applications are supported: Excitation at a selected, specific source point (e.g. shaker excitation). In this case, the excitation (force) is used as a reference signal. As a result, the user receives the partial area specific transfer functions between the source and response. Operational excitation without a defined excitation source (e.g. wind excitation). Sound pressure close to the panel serves here as a reference signal. The measurements of the different array positions are synchronized over this.

5 INSIGHT. INNOVATIONS IN DETAIL PassBy Measurement In continuously developing further for you: Besides both major focuses Local Storage and Response Modification Analysis, there are a number of enhancements that make the measurement and analysis process with PAK even faster and more intuitive. PAK gradually strengthens its pioneering role as the standard measurement system and the innovative solution that grows with your measurement requirements. In doing so, your feedback and comments are important to us. VAS Graphics2Go Version 1.1 Audio in PowerPoint and Word With PAK 5.7 the export of psycho-acoustic parameters is now possible. The resulting interactive graphics package can be used either on its own or be embedded into Microsoft Word or PowerPoint. Display the graphic in PAK as usual and save it as a VAS Graphics2Go package. Insert the data package in the Office program and easily take advantage of interactive graphics for presentations or reports. Even more exciting, throughput data can now be played back acoustically. Analyses are now audible in Microsoft PowerPoint and Word. Functionalities such as tracking cursor, interactive change of the playback position and a slider for the adjustment of the volume are available. A playback of analyzed data is also possible when throughput data is included in the VAS Graphics2Go container. Easy Measurement with Digital Bus Raw Data In addition to the new feature for saving throughput data directly on the measurement device, Easy Measurement now also supports digital bus raw data. Digital bus raw data is acquired along with throughput data. From the track quantities of the digital bus, data such as rpm, torque and temperature can be derived. Enhancements in Intensity The modified PAK Intensity module now re-uses geometries from the PAK Operational Deflection Shape analysis (ODS). Simply upload the geometry of the ODS in the PAK Intensity module using the import option all objects known in the intensity geometry are adopted correctly. Also new is the option to select the probe handle from the manufacturers Microtech Gefell, Brüel & Kjær, G.R.A.S. and other probes. For these probes the measurement process is controlled via the buttons on the probe handle. Alternatively it is possible to control the measurement process over the function keys F1 to F3. Furthermore, the upper and lower cutoff frequency for the data acquisition and analysis at the limits of standard specifications can be defined manually. 32-channel Output in the Audio field The PAK MKII can be used with PAK 5.7 as an audio system and is therefore the ideal system for a calibrated playback. The signal output is generated by the ALO42S module. Thereby the entire signal chain is fully calibrated and covers a frequency range from 0 to 80 khz. This allows the playback of a measurement via PAK audio and the triggering of for example a shaker, loudspeaker or subsequent system. Problems experienced at the calibration of sound cards are not possible when using the PAK system via PAK MKII playback. The appropriate PAK software controls the signal chain easily and is fully integrated in the measurement system. The new parameter display in real PassBy measurements is especially suitable for a quick overview and to assess whether the run was operated correctly or for the driver s information via external screens on the test track. For displaying the standard parameters, representing PassBy measurements on a second screen has been enhanced since PAK 5.6 Service Release 5. Quantities, such as speed and the speed at the pp-line, can be clearly displayed besides distance, background noise, weather data and throttle point in a separate window as digital values in a seven-segment display. The number of columns, the number of decimal places and the colors of the digital values and backgrounds are individually configurable. Dynamic Balancing in multiple planes Balancing rotating systems in multiple planes is easily executed with the PAK module Dynamic Balancing. The modified user interface assists users with a tabular design with integrated graphics for enhanced clarity. Via the tabs Calibration, Balancing settings, Balancing results and Distribution of compensation masses users are systematically guided through the balancing process. The navigation bar includes the selection of runs, the sequence for all balancing runs and the One-Shot-Method. The now available orbit diagram displays the measurement data with the averaged orbit. For simplified balancing, each control run can now be used as an initial balance run. The history of compensation masses is recorded and the sum of all compensation masses is shown as a value. Impact Measurement Impact measurement now includes functions for the correction of hammer and sensor positions after the measurement and the enhancement of the graphic functions for displaying the inverse transfer functions. Users benefit from a more flexible way of working and an easier integration of transfer functions from impact measurements into TPS networks. Graphics and Data Viewing Take full advantage of a myriad of features available in PAK 5.7 which will improve your daily working with PAK. Particularly noteworthy are: Channel overview for reference channels Display of transfer ratios in nth octave spectra Configurable sorting of channel lists Configuration of track quantities depending on the measurement quantity in graphic streaming Undo-function for single mouse-oriented zoom steps Merging of all PDFs generated by the graphic sequence into one PDF by means of an external tool Interactive modification of isoline deltas in the graphic definition Interactive shifting and scaling of a graphic embedded in a 3D Campbell diagram Sine reduction with trigger function for the use of throughput data as analysis-rpm-channel Excluding edges for smoothing of rpm signals within Virtual channels Reversal of incomplete backup and restore actions Inter-project removals of selected measurements PAK 5.7 considerably simplifies applications making them more convenient for your tasks. PAK a comprehensive solution, integrating hardware and software in one platform. 8 9

6 PAK5.7 MONITORING Channel overview. Eavesdropping. Online Monitoring. Combine measurements. ANALYSIS & REPORTING Graphic Streaming. Interactive graphic parameters. Online-Analysis and post-processing. VAS Graphics2Go. MEASUREMENT Configure the measurement chain: Sensors. PAK MKII. Measurement PC. Initialize the system: Self-calibration. Parameterize the measurement: Sampling groups. Measurement mode. Track parameter. Options. Start the measurement. PAKSYSTEM COMPETENCY FOR YOUR TASKS AT HAND PAK5.7 OUTLOOK. TECHNOLOGIES FOR YOU Controlling the measurement chain from hardware to software and data management. Simplicity in the complexity. Our goal is to simply illustrate complex phenomena for optimal processing of your measurement tasks at hand without relinquishing performance, reliability and consistency. DATA MANAGEMENT Data Base. Model Mapper. Position Mapper. engineering data portal (edp). ASAM ODS ATF/XML format. We are certain that the only way to develop the PAK system is to continuously harness the special power found in collaborating with our customers. Therefore our commitment is to continue creating innovative solutions based on the strength of this partnership. PAK is the engine for networked scalable measurement and analysis. An integrated approach which joins sustainable process efficiency and a unique symbiosis from measurement and analysis. PAK system competence for data acquisition, analysis and management

7 Headquarters Müller-BBM VibroAkustik Systeme GmbH Robert-Koch-Strasse 11-13, Planegg/Munich, Germany Tel Fax Subsidiaries BeNeLux & UK: Müller-BBM VibroAkustik Systeme B.V. Rechterensedijk 8, 7722 HB Dalfsen, The Netherlands Tel Fax China: Müller-BBM VibroAkustik Systeme Beijing Ltd Unit , North Ring Center, #18 Yumin Road, Xicheng District, Beijing , China Tel Fax France: Müller-BBM VibroAkustik Systeme S.A.R.L. Parc Saint Christophe, 10 avenue de l Entreprise, Cergy-Pontoise Cedex, France Tel: Fax: info.fr@muellerbbm-vas.fr Italy: Müller-BBM VibroAkustik Systems Italia S.r.l. Via Livorno 60, Turin, Italy Tel Fax info.it@muellerbbm-vas.com Scandinavia: Müller-BBM Scandinavia AB Marieholmsgatan 9, Gothenburg, Sweden Tel Fax pak@muellerbbm.se South Africa: Mecalc (Pty) Limited 125 Witch-Hazel Avenue, Highveld Technopark, Centurion 0157, South Africa Tel Fax info@mecalc.co.za South Korea: Müller-BBM VibroAkustik Systeme Korea Ltd RM 201, Amin B/D, 110-1, YangJae-Dong, Seocho-Gu, Seoul, , South Korea Tel Fax info@muellerbbm-vas.co.kr Please ask us for more details or a detailed product demonstration. USA: Müller-BBM VibroAkustik Systeme, Inc. 455 E. Eisenhower Parkway, Suite 210, Ann Arbor, MI 48108, USA Tel Fax info.us@muellerbbm-vas.com Distributors Australia: Vipac Engineers and Scientists Ltd 279 Normanby Road, Port Melbourne, Victoria 3207, Australia Tel Fax melbourne@vipac.com.au India: Welan Technologies Nissim, Plot 10A, Lane No 13, Ganesh Kripa Society, Paud Road, Pune , India Tel Fax info@welantechnologies.com Japan: TOYO Corporation 1-6, Yaesu 1-chome, Chuo-ku, Tokyo , Japan Tel Fax murata@toyo.co.jp Müller-BBM VibroAkustik Systeme GmbH. PAK, edp Müller-BBM and VAS Graphics2Go are registered trademarks of Müller-BBM VibroAkustik Systeme GmbH. All other names marked with or are trademarks or registered trademarks of other manufacturers in their respective countries. Information listed in this brochure is subject to change without notice due to product development. We accept no responsibility for the accuracy of the information provided. PAK