Description
Polynomial step function y = h * (10*(x/w)^3 - 15*(x/w)^4 + 6*(x/w)^5) where:
wis the ramp widthhis the ramp height
First and second derivatives at the start and end points are zero.
#include <ChFunctionPoly345.h>
Public Member Functions | |
| ChFunctionPoly345 (double height, double width) | |
| ChFunctionPoly345 (const ChFunctionPoly345 &other) | |
| virtual ChFunctionPoly345 * | Clone () const override |
| "Virtual" copy constructor (covariant return type). | |
| virtual Type | GetType () const override |
| Return the unique function type identifier. | |
| virtual double | GetVal (double x) const override |
| Return the function output for input x. More... | |
| virtual double | GetDer (double x) const override |
| Return the first derivative of the function. More... | |
| virtual double | GetDer2 (double x) const override |
| Return the second derivative of the function. More... | |
| virtual double | GetDer3 (double x) const override |
| Return the third derivative of the function. More... | |
| void | SetWidth (double width) |
| double | GetWidth () const |
| void | SetHeight (double height) |
| double | GetHeight () const |
| virtual double | GetPositiveAccelerationCoeff () const override |
| Compute the positive acceleration coefficient. More... | |
| virtual double | GetNegativeAccelerationCoeff () const override |
| Compute the negative acceleration coefficient. More... | |
| virtual double | GetVelocityCoefficient () const override |
| Compute the velocity coefficient. More... | |
| virtual void | ArchiveOut (ChArchiveOut &archive_out) override |
| Method to allow serialization of transient data to archives. | |
| virtual void | ArchiveIn (ChArchiveIn &archive_in) override |
| Method to allow de-serialization of transient data from archives. | |
 Public Member Functions inherited from chrono::ChFunction | |
| ChFunction (const ChFunction &other) | |
| virtual double | GetDerN (double x, int der_order) const |
| Return the Nth derivative of the function (up to 3rd derivative). More... | |
| virtual double | GetWeight (double x) const |
| Return the weight of the function. More... | |
| virtual void | Update (double x) |
| Update the function at the provided value of its argument. | |
| virtual double | GetMax (double xmin, double xmax, double sampling_step, int der_order) const |
| Estimate the maximum of the function (or its der_order derivative) in the range [xmin, xmax]. More... | |
| virtual double | GetMin (double xmin, double xmax, double sampling_step, int der_order) const |
| Estimate the minimum of the function (or its der_order derivative) in the range [xmin, xmax]. More... | |
| virtual double | GetMean (double xmin, double xmax, double sampling_step, int der_order) const |
| Estimate the mean of the function (or its der_order derivative) in the range [xmin, xmax]. More... | |
| virtual double | GetSquaredMean (double xmin, double xmax, double sampling_step, int der_order) const |
| Estimate the squared mean of the function (or its der_order derivative) in the range [xmin, xmax]. More... | |
| virtual double | GetIntegral (double xmin, double xmax, double sampling_step, int der_order) const |
| Estimate the integral of the function (or its der_order derivative) over the range [xmin, xmax]. More... | |
| virtual void | OutputToASCIIFile (std::ostream &file, double xmin, double xmax, int samples, char delimiter) |
| Store X-Y pairs to an ASCII File. More... | |
| virtual ChMatrixDynamic | SampleUpToDerN (double xmin, double xmax, double step, int derN=0) |
| Sample function on given interval [xmin, xmax], up to derN derivative (0 being the function output itself). More... | |
| double | operator() (double arg) const |
| Alias operator of the GetVal function. | |
Additional Inherited Members | |
| Public Types inherited from chrono::ChFunction | |
| enum | Type { BSPLINE, CONSTANT, CONSTACC, CONSTJERK, CUSTOM, CYCLOIDAL, DERIVATIVE, FILLET3, INTEGRAL, INTERP, LAMBDA, MIRROR, OPERATOR, POLY, POLY23, POLY345, RAMP, REPEAT, SEQUENCE, SINE, SINE_STEP } |
| Enumeration of function types. | |
Member Function Documentation
◆ GetDer()
|
overridevirtual |
Return the first derivative of the function.
Default implementation computes a numerical differentiation. Inherited classes may override this method with a more efficient implementation (e.g. analytical solution).
Reimplemented from chrono::ChFunction.
◆ GetDer2()
|
overridevirtual |
Return the second derivative of the function.
Default implementation computes a numerical differentiation. Inherited classes may override this method with a more efficient implementation (e.g. analytical solution).
Reimplemented from chrono::ChFunction.
◆ GetDer3()
|
overridevirtual |
Return the third derivative of the function.
Default implementation computes a numerical differentiation. Inherited classes may override this method with a more efficient implementation (e.g. analytical solution).
Reimplemented from chrono::ChFunction.
◆ GetNegativeAccelerationCoeff()
|
inlineoverridevirtual |
Compute the negative acceleration coefficient.
(derived classes should override this).
Reimplemented from chrono::ChFunction.
◆ GetPositiveAccelerationCoeff()
|
inlineoverridevirtual |
Compute the positive acceleration coefficient.
(derived classes should override this).
Reimplemented from chrono::ChFunction.
◆ GetVal()
|
overridevirtual |
Return the function output for input x.
Must be overridden by specialized classes.
Implements chrono::ChFunction.
◆ GetVelocityCoefficient()
|
inlineoverridevirtual |
Compute the velocity coefficient.
(derived classes must override this).
Reimplemented from chrono::ChFunction.
The documentation for this class was generated from the following files:
- /builds/uwsbel/chrono/src/chrono/functions/ChFunctionPoly345.h
- /builds/uwsbel/chrono/src/chrono/functions/ChFunctionPoly345.cpp
