Fixed-Point Blockset    

Advanced Demos: Filters and Systems

The filter and system demos are intended to be used as a design aid so you can see how to build and test filters and systems suited to your particular needs. The output of these demos is compared to the output of analogous built-in Simulink blocks with identical input.

You can access the filter and system demos through the Filters & Systems: Examples block, which is included with the Fixed-Point Blockset library. Alternatively you can type

at the MATLAB command line. The advanced demos are listed below.

Table 2-2: Advanced Fixed-Point Blockset Demos  
Demo Name
 Description
Fixed-Point Integrators
 Compare output from the FixPt Integrator: Trapezoidal, FixPt Integrator: Backward, and FixPt Integrator: Forward realizations to output from Simulink's Discrete Integrator block.
Fixed-Point Derivatives
Compare output from the FixPt Derivative and FixPt Derivative: Filtered realizations to output from the Simulink derivatives built using the Discrete Filter and Transfer Fcn blocks.
Fixed-Point Lead and Lag Filters
 Compare output from the FixPt Lead and Lag Filter realization to output from analogous Simulink filters built using the Discrete Filter block.
Fixed-Point State Space
 Compare output from the FixPt State-Space Realization realization to output from the analogous built-in Simulink State-Space and Discrete State-Space block.

You can invoke a filter or system demo by double-clicking the appropriate subsystem. For example, to invoke the Fixed-Point Derivatives demo, double-click the Demo: Derivative subsystem. For more information about filters and systems, refer to Chapter 7, Building Systems and Filters.

Additional fixed-point demos exist for direct form II, series cascade form, and parallel form realizations. These demos and realizations are discussed in Chapter 5, Realization Structures.


 Basic Demos Using the Fixed-Point Blockset