The use of BPX is currently limited by the restrictive set of mathematical operations that are allowed in FloatFunctionTable inputs.
The schema currently supports the following operations: *, /, -, +, **, exp, tanh.
Here are some suggestions:
Allow > and < to support piecewise functions as sums, e.g.: (x < 0) * 1 + (x > 0) * 0.5.
Scope for alternative variable dependencies, such as non-Arrhenius temperature dependence for chosen parameters.
A reasonable goal would be that BPX should support the electrolyte parameterisation in Landesfeind-Gasteiger 2019, which is widely used in industry, in which the electrolyte parameters are expressed as general functions $f(c_\mathrm{e}, T)$.
Support for "MSMR" expressions to write OCP as an explicit inverse function $\thetak(U{k,m,\mathrm{ref}})$, which is implemented in PyBaMM as the MSMR model
The use of BPX is currently limited by the restrictive set of mathematical operations that are allowed in
FloatFunctionTableinputs.Here are some suggestions:
>and<to support piecewise functions as sums, e.g.:(x < 0) * 1 + (x > 0) * 0.5.