cosin software 2021-1 release notes

 cosin

1. support is discontinued for macOS (32 bit), Red Hat Enterprise Linux 5 (32 and 64 bit), Red Hat Enterprise Linux 7 (32 bit) and Red Hat Enterprise Linux 8 (32 bit)
2. new functions ‘ssin’, ‘scos’, ‘fishhook’, and ‘dwellsin’ (’single sine/cosine cycle‘, ‚fishhook‘, ’sine with dwell‘) available in all arithmetic functions throughout all cosin applications
3. new plot-file format ‚tydex‘
4. new license option ‚certified‘

cosin GUI

1. new optional file location proposals menu, shown prior to file or folder selection throughout all cosin GUIs
2. improved formatting and placement of small transient info windows
3. configuration file management for all cosin GUIs improved, to avoid conflicts when several cosin applications are opened simultaneously
4. optional OS-specific file selection introduced in macOS and Linux, replacing equiva-lent but antiquated Tcl/Tk X11-based windows

FTire

1. fix: selection of road attribute display in animation window
2. fix: made sure ‚discard PP data‘ also works for RT data
3. tire surface coloring enabled for all speed modes if in diagnosis mode
4. new feature to activate only certain groups of output signals
5. improved side wall stretching computation at lateral displacement (put under ‚emu-lated version‘ control)

FTire/sim

1. made sure output diagnosis mode is observed in non-CTI-driven simulations
2. default value of center-line position added

FTire/fit

1. fix: typo in RMAX simulation script
2. removed unloading part from CVERT measurements identification, since no useful information is contained herein due to fast unloading
3. specification of delay times in all statics and steady-state simulation scripts unified
4. made sure ‚gravity rotation‘ works for cleat tests (in case wheel runs on vertical side of drum)
5. adjustable rim rotation angle in footprint identification introduced, to exactly match measurement in case of non-trivial tread pattern
6. wizard for generating a new project completely revised and made more user-friendly

FTire/dwt

1. fix: made sure CTI environment is closed properly after each simulation run and un-der all circumstances

cosin/road

1. fix: proper closing of vi-CarRealTime ‘vrcompute’ method
2. fix: right/left road track visualization issue
3. fix: made sure the array-based rgr evaluation works well with CTI state save/restore
4. array-based road evaluation made available for all 3rd-party solvers
5. rgr shift/rotate values (as read in data file) now properly inserted in GUI entry fields
6. made sure pseudo rgr files (center-lines w/o rgr grid) are treated properly in GUIs and FTire/hil
7. randomly placed obstacles and image now also available in rgr generation, not only in modification
8. new 32-byte encryption key for rgr roads

cosin/mbs

1. FTire invocation and control from cosin/mbs models improved
2. G display added to cosin/mbs dashboard

cosin/tools

1. file filter added to cosin/ip GUI
2. redesign and improved folder selection in cosin/ip GUI
3. zoom in / zoom out in cosin/ip PSD mode enabled

cosin/tools for roads

1. fix: GUI specifying road license key made work properly
2. fix: rgr output in ascii format
3. made sure accuracy of crg -> rgr export is always shown in GUI
4. new function to partially export crg -> rgr
5. histogram analysis output for rgr roads introduced
6. center-line thumbnail plot added to GUI

cosin/tools for tires

1. modal analysis GUI reformatted
2. new simplified and fast computation of statics, steady-state, and handling charac-teristics added to GUI and CL; output both as diagram and minimalistic Ascii file for further processing in 3rd-party analysis software
3. DOE parameter selection in characteristics plot generalized
4. output of TYDEX files added to characteristics plots
5. user-definable sampling rate introduced in characteristics plot

cosin/tools for Matlab

1. added center-line output to writergr.m

CTI (cosin tire interface)

1. fix: speed mode issue in vi-CarRealTime environment
2. the following CTI functions are marked deprecated:
   • ctiAnimateSceneWithExtRoad
   • ctiComputeForcesTimeContinuousWithExtRoad
   • ctiComputeForcesWithExtRoad
   • ctiComputeForcesWithExtRoadList
   • ctiComputeForcesWithExtRoadMT
3. new CTI function ctiSetURGM to set a user-defined road grid model callback and dependent parameter structure
4. new CTI call mode MCOSM=4 for improved stabilization of parallel co-simulation with vehicle model, using the linearized stiffness matrix to predict Jacobian of forc-es/moments in next time step

Documentation

1. chapter ‚FTire model‘ updated with new features and data
2. new functions ssin, scos, fishhook, and dwellsin added to cosin/io chapter