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Visual Solutions

VisSim for Dynamic Simulation and Model Based Control Design Visual Solutions, Inc. 487 Groton Road, Westford MA 01886 USA (800) VISSIM-1 www.vissim.com. Visual Solutions. Founded in 1989

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Visual Solutions

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  1. VisSim for Dynamic Simulation and Model Based Control DesignVisual Solutions, Inc.487 Groton Road, Westford MA 01886 USA(800) VISSIM-1www.vissim.com

  2. Visual Solutions • Founded in 1989 • Creator and continued developer of VisSim – a block diagram language for modeling, simulation and embedded system development • Shipped over 250K licenses • Located in Westford, Mass – 45 min NW Boston • EDN Hot 100 top products winner 2

  3. VSI Relationships • Texas Instruments Partner since June 2000 • TI includes VisSim/ECD in hardware evaluation kits • Telelogic/IBM resells VisSim as “Continuous Modeler”. • Tight co-simulation coupling with Statemate. • Mathsoft(PTC) resold VisSim/PE low end VisSim products

  4. Visual SolutionsMarkets & Major Accounts Aerospace Motion Control Power & Gas Allied-Signal Allen Bradley British Gas General Dynamics Danaher/Kollmorgen Arizona P&G GEC Alsthom Maxon Motor AG Florida Light&Power BF Goodrich Aerospace General Electric Drives Hitachi Power Boeing Electric Motion Systems Manitoba Power British Aerospace Indramat Ontario Hydro Cessna Instron Corporation Pacific Gas & Electric Embraer INA Motorenelemente Schaeffler KG Kollsman Copley Controls Litton Parker Hannifin Tenneco Gas Lockheed-Martin Universal Instruments TVA NASA Spectra Physics Union Electric Northrop-Grumman Vickers Virginia Power Pratt & Whitney Textron

  5. Visual Solutions Markets & Major Accounts Industry Process ControlTransportation ABB-Instrumentation Alcan Rolled Products ABB Allen Bradley Amoco Bombardier Carrier Corporation Bethlehem Steel British Rail Corning Bayer Renault Fuji Electronics BP Chemical Eaton General Electric Emerson Process Ford 3M Dow Chemical GM Honeywell DuPont Honda R & D Hughes Foxboro Mazda IBM General Mills Volvo Johnson Controls Georgia Pacific Motorola International Paper Raytheon Kaiser Aluminum TRW Mead Paper Toshiba Mobil Chemical United Technologies Potlatch Westinghouse Weyerhaeuser

  6. VisSim in Process • Dupont Nomex plant model for off-line tuning • Ineos-chlor – operator training, off-line tuning • Emerson Process – pulp and paper modeling • Honeywell – pulp and paper plant modeling for optimization and troubleshoot • HP – printer fabrication logistics optimization • Amoco – off shore oil rig gas turbine simulation

  7. VisSim in Biomedical • Resmed – Human respiration models, embedded test • Medtronics – Respirator test • Cardinal Health – Respirator modeling and development • Medran – Digital filtering for MRI vital stat monitor • Respironics – Respirator develoment • Newport Medical – Respirator develoment • Luminous Medical – Automated blood glucose monitoring

  8. VisSim in Water Treatment • East Bay Municipal District – Oakland, Cal • models problematic flow and filtering systems for control improvement • Passaic Valley Sewerage Commissioners • Treats 25% of New Jersey Waste Water • Use VisSim models to develop new controls for Flow Balance and Level Control • Paper given at ISA WWAC 2009 • Scottish Water Authority • VisSim modeled effect of PLC control of dam sluice gates on reservoir height for high rain event

  9. VisSim in Automotive • Mercedes-ILMOR • models Formula 1 McClaren engines(V10 - 885 BHP). • Analyze aspects of engine control such as adaptive torque, high pressure injection • Delphi Automotive • Develop anti lock braking. Use laptop w/VisSim/RealTime to test control strategies • Chrysler • Models aspects of manufacturing line • Freightliner • Test track steering control

  10. What our users say: • I am using Vissim 7.0 almost every day. I am very pleased with the functionality and new blocks that have been added with for the F280x controller from TI. I think that you are now achieving your statement (from the TI site) that VisSim ECD is capable of creating a complete control algorithm for the F280x directly from the VisSim environment. • As a developer of high and very-high power digitally-controlled power supplies, I don't have the time to get too much into the nitty gritty of the DSP and find the VisSim environment ideal for me. I would like to thank you for your support at VisSim and the continuing development of your software • Tony Boon Power Engineer CEG Elettronica

  11. Recent customer ship of control designed and developed 100% in VisSim • Electric Motion Systems developed F2801 based controller with: • PMSM space vector control • Hall sensor interpolation • Cruise control • Regenerative braking • Temp & bus voltage sensing • I2C read/write to EEPROM • Serial port protocol to read and write packet commands for status, accel, cruise, brake etc. • http://www.electricmotionsystems.com/

  12. VisSim Overview • Visual block diagram software for dynamic system simulation and embedded system development. • Fast, accurate dynamic simulation for floating and fixed-point • Automatic production of high quality fixed point code • Exceptional dynamic and DSP-in-loop simulation capabilities • Automatic programming of on-chip DSP peripherals • Intuitive, easy-to-use graphical user interface

  13. Product Line • VisSim Core Visual Simulation Tool - build, simulate and debug dynamic systems • Simulink Translator • 3D Animation • Over 100 built-in blocks • Built-in C & VML interpreter • Matlab interface • Royalty free redistributable Viewer

  14. VisSim Add-ons • Real-Time - Allows up to 30 kHz closed loop sampling from VisSim on PC • C-Code - Generates ANSI C from diagram • Analyze - Frequency domain analysis of linearized non-linear subsystem (Bode, Root-locus, Nyquist plots) • Fixed-point - Block set of bit true scaled integer operations for simulation and code generation

  15. VisSim Add-ons (cont.) • Comm - Physical layer data communication • Optimize Pro - Generalized Reduced Gradient method of parameter optimization • Neural nets - Neural network construction and training package • DSP Targets – Texas Instruments C2000, MSP430, C6713 • OPC Client – connects to any OPC server for factory floor acquisition, operator training/tuning against factory model • PMD DK2300 – motion controller interface for BLDC, stepper and Brush DC motors. Takes trajectories, jerk, accel & velocity limits and creates motor commands.

  16. VisSim/Comm • Addon for physical layer data communications • Performs Modulation/Demodulation, encoding/decoding, channel fading, filtering, BER analysis • 802.11g • Ultrawide band short range “bluetooth” • Supports Red Rapids card for soft radio Rx/Tx

  17. VisSim Motion Block Set • Motion Block Set - Preconstructed block set for motion control • Includes AC Induction • Brush and brushless DC • Stepper motors • Controllers • Rotational and translational loads.

  18. VisSim/Real-Time • Supports National Instruments and Measurement Systems • Analog, digital, thermocouple, counter, PWM, encoder • 30 kHz close loop sampling straight from Windows/NT,XP • Just place block and select “Run in Real-Time” from Simulations Properties dialog.

  19. VisSim Plays Well with Others • OLE interface- allows inclusion of any OLE compliant software • VisSim - Mathcad OLE interface allows graphics plus data exchange • VisSim - Matlab Integration allows matrix data exchange and Matlab expression evaluation • Simulink Translator brings Simulink diagrams into VisSim workspace.

  20. VisSim Custom Block API • MSVC Wizard creates project for custom block. Just drop in code. • API allows: • Menu positioning • Block & connector naming and data typing • Code generation • Simulation info on integration method, integration step, time step, current time etc.

  21. VisSim Co-simulation API • VisSim co-simulation API allows fast, efficient interprocess communication for co-simulation interfacing. • Based on NT shared memory and Events • In use by iLogix Statemate • General purpose API

  22. Large Model Support • Load 300,000 block model in under 2 minutes • Embed blocks insert separate component model files as subsystems • Path aliases allow macro expansion to remove file system dependencies • Tags allow quick navigation in large system

  23. VisSim Viewer • Free redistributable run-time version of VisSim • Allows licensed users to freely distribute models to those who do not have VisSim development licenses • Easy way to share ideas, models and simulations • Supply proof-of-concept simulations to potential customers

  24. Diagram Construction • Insert block by selecting toolbar icon or menu item • Change parameters by double or right mouse click on block • Connect by mouse-down on connector, drag, mouse up on or near target connector • Must have consumer to execute (Plot, display, export etc.)

  25. Block manipulation • Select blocks by left-mouse+drag background • Right click to operate on selected blocks • Edit menu also operates on selected blocks • Left-mouse+drag on selected block to move group • Left click background to remove selection

  26. Subsystem Properties • Local Time – allows running at slower rate than main sim. Must be multiple of base clock for DSP targeting. • External Trigger – Use external logic to control execution of subsystem. • Name – Applies name to face of block • Bitmap- Applies bitmap image to face of block • Password protection – Use password to control access to compound contents • Create dialog box from contained dialog constants

  27. Interesting blocks • “Dialog Constant” blocks allow users to create custom dialog boxes • 1D,2D,3D table lookup with interpolation • Variables for “wireless” data transfer • Data file import/export (.csv,.txt,.m,.mat,.wav) • Background timestamped event logging • Used in measurement & test • User control of log rate and operation

  28. VisSim 7.0 – Released Jan 2008 • Improvements to core VisSim, ECD, OPC and RT • New blocks: 3D Plot, 3D Animation, VRML, Matrix operations, random generators • New features: autosave interval, open last file, VML (VisSim Matrix Language), • Printing enhanced • Bug fixes • PMD motion I/O card driver

  29. Digital Filter Design Tools • IIR Low Pass, High Pass, Band Stop • Butterworth, Bessel, elliptic,Chebyshev,Inverse Chebyshev • Floating point & fixed point • Continuous & Discrete • Z->S and S->Z domain conversion using Tustin (bilinear) transform • FIR • Multi-band Remez exchange • Rectangular, Bartlett, Hamming, Hanning, Kaiser

  30. Numerical Integration • 9 different methods • Euler is simplest fastest, least accurate method • Adaptive step are most accurate • Stiff good for solving stiff sets of equations (hi freq component that has small amplitude)

  31. VisSim Variables • VisSim variables allow data exchange by name instead of by wire

  32. Discrete systems • 1/Z sampled delay - clock input • Discrete transfer function • Sample hold • Other blocks work with both continuous and discrete systems • Compound block can be enabled, or run at different sampling rate • Work with scaled fixed-point data

  33. Optimization • Built-in optimizer can find optimal system parameters by minimizing user defined cost • Use by inserting parameterUnknown blocks & at least 1 cost block. • 3 built-in methods • API for optional user method • Addon method “Generalized Reduced Gradient” provided by 3rd party

  34. Matrix Operations • All arithmetics (add,mul,div,gain etc) • Const block takes matrix syntax ([1:n],eye(n) etc. • Unit delay, merge, plot, display all take matrix operations • Matrix mul, buffer, dot product, vector sum, diag, PSD, fft, ifft, transpose, reshape, index

  35. VisSim/Embedded Controls Developer • Bundle of VisSim, C-Code, target support, TI Digital Motor Control block-set , fixed-point block set, TI Code Composer Studio plug-in • Supports MSP430, LF24xx, F281x, F280x on-chip peripherals: Analog in, PWM, CAN, encoder, event capture, serial, I2C, SPI, I/O ports, watch dog

  36. Model-Based Embedded Target Support • Low level support for Texas Instruments chips • Supports Linux and QNX • Support other targets and RTOS • No royalty on generated code • Addition of other hardware vendors like MicroChip, ST, Infineon, Analog Devices etc is straight forward due to external API template used.

  37. Model and Validate • Find and fix problems before codegen and target download • Use high-level, pre-debugged blocks • Support simulation of controller at block level on PC • Allow mouse probe of every input and output to display values at any instant • Debug block-level simulation on PC

  38. Debug and test • Rapid diagram edit-compile-download-debug cycle (under 10 secs) *Code automatically generated, compiled, linked, and downloaded VisSim on PC Target Interface block Reads/writes data to MCU Control Application Code* JTAG Plant Under Control • VisSim blocks for: • Virtual plant • Interactive gains • Scope Plots of MCU data C2000 MCU • Target-in-loop simulation of controller at code level on DSP through automatic code generation, compile, link, and download, and using JTAG in “Real-Time Monitor” mode • Test, debug, and validate the complete control system executing on DSP using an interface block • Provide parameters and observe DSP results in VisSim on PC

  39. On-Chip Peripherals • All on-chip peripherals are supported including:ADC, digital inputs and outputsPWMs, quadrature encoderevent capture, watch dog, interrupt, CAN busserial port, SPI, I2C, McBSP

  40. TI Digital Motor Control (DMC) Library • hand-written, tested and optimized by TI • available in VisSim/ECD in easy-to-use block set • supports simulation mode (pure PC based simulation with 16/32-bit truncation effects) • supports code generation mode • Speed/Flux Est., Park/Clarke xform, QEP speed with filtering, Sliding Mode Observer rotor position estimator, space vector wave form generator • ACI motor simulator

  41. Demo: DC-DC buck converter • Demo of TI F28044 based DC-DC buck converter. • Uses PWM to RLC to control voltage • Control sample rate is 400KHz • CPU is 100 MHz • Demo shows use of “monitor buffers” to acquire data at 400KHz and display in VisSim plot as digital scope.

  42. VisSim Strengths • Fast simulation – up to 10x faster than Simulink • Ease of use - many customer testimonials • Maturity and quality of code – low MTBF • Depth of features (real-time analog/digital I/O, analyze, OPC, code-gen, CAN, 2D/3D plotting, 3D animation, filter design,state transition blocks) • Fast code generation – within 5% of hand coded applications • Small code generation footprint – can fit closed loop controller in 1.5KB flash/128 bytes RAM on MSP430 F2012 • Nimble – VisSim.exe only 3.5MB – total install 11MB • Open, documented API for custom block creation

  43. Next step • Download trial from www.vissim.com • Contact VisSim sales to determine training and consulting needs

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