Solver Options — Control Systems/Optimization

Solver Options

Control Systems / Optimization

Holds solver options, as MATLAB’s optimoptions does: a solver block of the Optimization family names this block in its Options, and for the run every option set here replaces the solver’s own value of the parameter of the same name – one options block can serve several solvers, as one options object can. An option left at default leaves the solver’s own value, and an option the solver does not have is ignored, as MATLAB ignores an option a solver does not use. Nothing is written into the solver’s saved parameters: the next run without the reference reads its own again. Each ICore solver runs one algorithm, its own, so there is no Algorithm option. It has no ports and computes nothing.

Ports

• None: a block names it in its Options; nothing is wired to it.

Parameters

• Optimality Tolerance – default (default), or the first-order optimality a solver stops at (OptimalityTolerance).
• Step Tolerance – default (default), or the step size a solver stops at (StepTolerance).
• Function Tolerance – default (default), or the change in the objective a solver stops at (FunctionTolerance).
• Constraint Tolerance – default (default), or how far a constraint may be violated (ConstraintTolerance).
• X Tolerance – default (default), or the change in x a solver stops at (TolX of fminsearch, fminbnd, fzero and lsqnonneg).
• Maximum Iterations – default (default), or the iterations a solver may take (MaxIterations).
• Maximum Function Evaluations – default (default), or the objective evaluations a solver may make (MaxFunctionEvaluations); also k*numberOfVariables, optimoptions’ own form, k times the number of elements of the solver’s Start Point.
• Sampling Time (s) – not read: an options carrier runs nothing.

A value that is neither default nor a number stops the run with this block’s name, and so does an Options naming a block that is not a Solver Options block.

Code export

All ten targets: Python, MATLAB, Java, Rust, C, C++, VHDL, Verilog, SystemVerilog and PLC Structured Text, as a named body that does nothing. The options reach the exported code through the blocks that name it, which export the values they ran with.

Simulink bridge

None (Support::None). The Optimization Toolbox ships no Simulink library and optimoptions is a MATLAB function, so there is no block to map onto; the bridge reports this block rather than dropping it silently.

Notes

• Stateless: it holds values, read when a run or an export loads the blocks that name it.