Control gravity residual under contact. More...

#include <crocoddyl/multibody/residuals/contact-control-gravity.hpp>

Public Types
typedef ActuationModelAbstractTpl< Scalar >	ActuationModelAbstract

typedef ResidualModelAbstractTpl< Scalar >	Base

typedef ResidualDataContactControlGravTpl< Scalar >	Data

typedef DataCollectorAbstractTpl< Scalar >	DataCollectorAbstract

typedef MathBaseTpl< Scalar >	MathBase

typedef MathBase::MatrixXs	MatrixXs

typedef ResidualDataAbstractTpl< Scalar >	ResidualDataAbstract

typedef StateMultibodyTpl< Scalar >	StateMultibody

typedef MathBase::VectorXs	VectorXs

Public Member Functions
	ResidualModelContactControlGravTpl (boost::shared_ptr< StateMultibody > state)
	Initialize the contact control gravity contact residual model. More...

	ResidualModelContactControlGravTpl (boost::shared_ptr< StateMultibody > state, const std::size_t nu)
	Initialize the contact control gravity contact residual model. More...

virtual void	calc (const boost::shared_ptr< ResidualDataAbstract > &data, const Eigen::Ref< const VectorXs > &x)
	Compute the residual vector for nodes that depends only on the state. More...

virtual void	calc (const boost::shared_ptr< ResidualDataAbstract > &data, const Eigen::Ref< const VectorXs > &x, const Eigen::Ref< const VectorXs > &u)
	Compute the contact control gravity contact residual. More...

virtual void	calcDiff (const boost::shared_ptr< ResidualDataAbstract > &data, const Eigen::Ref< const VectorXs > &x)
	Compute the Jacobian of the residual functions with respect to the state only. More...

virtual void	calcDiff (const boost::shared_ptr< ResidualDataAbstract > &data, const Eigen::Ref< const VectorXs > &x, const Eigen::Ref< const VectorXs > &u)
	Compute the Jacobians of the contact control gravity contact residual. More...

virtual boost::shared_ptr< ResidualDataAbstract >	createData (DataCollectorAbstract *const data)
	Create the contact-control-gravity residual data.

virtual void	print (std::ostream &os) const
	Print relevant information of the contact-control-grav residual. More...

Public Attributes
EIGEN_MAKE_ALIGNED_OPERATOR_NEW typedef _Scalar	Scalar

Protected Attributes
std::size_t	nu_
	Control dimension.

boost::shared_ptr< StateAbstract >	state_
	State description.

VectorXs	unone_
	No control vector.

bool	v_dependent_
	Label that indicates if the residual function depends on v.

Detailed Description

template<typename _Scalar>
class crocoddyl::ResidualModelContactControlGravTpl< _Scalar >

Control gravity residual under contact.

This residual function is defined as \(\mathbf{r}=\mathbf{u}-(\mathbf{g}(\mathbf{q}) - \sum \mathbf{J}_c(\mathbf{q})^{\top} \mathbf{f}_c)\), where \(\mathbf{u}\in~\mathbb{R}^{nu}\) is the current control input, \(\mathbf{J}_c(\mathbf{q})\) is the contact Jacobians, \(\mathbf{f}_c\) contains the contact forces, \(\mathbf{g}(\mathbf{q})\) is the gravity torque corresponding to the current configuration, \(\mathbf{q}\in~\mathbb{R}^{nq}\) is the current position joints input. Note that the dimension of the residual vector is obtained from state->get_nv().

As described in ResidualModelAbstractTpl(), the residual value and its Jacobians are calculated by calc() and calcDiff(), respectively.

See also: ResidualModelAbstractTpl, calc(), calcDiff(), createData()

Definition at line 122 of file fwd.hpp.

Constructor & Destructor Documentation

◆ ResidualModelContactControlGravTpl() [1/2]

ResidualModelContactControlGravTpl	(	boost::shared_ptr< StateMultibody >	state,
		const std::size_t	nu
	)

Initialize the contact control gravity contact residual model.

Parameters

[in]	state	State of the multibody system
[in]	nu	Dimension of the control vector

◆ ResidualModelContactControlGravTpl() [2/2]

ResidualModelContactControlGravTpl ( boost::shared_ptr< StateMultibody > state )

explicit

Initialize the contact control gravity contact residual model.

The default nu value is obtained from StateAbstractTpl::get_nv().

Parameters

[in] state State of the multibody system

Member Function Documentation

◆ calc() [1/2]

virtual void calc	(	const boost::shared_ptr< ResidualDataAbstract > &	data,
		const Eigen::Ref< const VectorXs > &	x,
		const Eigen::Ref< const VectorXs > &	u
	)

virtual

Compute the contact control gravity contact residual.

Parameters

[in]	data	Contact control gravity residual data
[in]	x	State point \(\mathbf{x}\in\mathbb{R}^{ndx}\)
[in]	u	Control input \(\mathbf{u}\in\mathbb{R}^{nu}\)

◆ calc() [2/2]

virtual void calc	(	const boost::shared_ptr< ResidualDataAbstract > &	data,
		const Eigen::Ref< const VectorXs > &	x
	)

virtual

Compute the residual vector for nodes that depends only on the state.

It updates the residual vector based on the state only (i.e., it ignores the contact forces). This function is used in the terminal nodes of an optimal control problem.

Parameters

[in]	data	Residual data
[in]	x	State point \(\mathbf{x}\in\mathbb{R}^{ndx}\)

◆ calcDiff() [1/2]

virtual void calcDiff	(	const boost::shared_ptr< ResidualDataAbstract > &	data,
		const Eigen::Ref< const VectorXs > &	x,
		const Eigen::Ref< const VectorXs > &	u
	)

virtual

Compute the Jacobians of the contact control gravity contact residual.

Parameters

[in]	data	Contact control gravity residual data
[in]	x	State point \(\mathbf{x}\in\mathbb{R}^{ndx}\)
[in]	u	Control input \(\mathbf{u}\in\mathbb{R}^{nu}\)

◆ calcDiff() [2/2]

virtual void calcDiff	(	const boost::shared_ptr< ResidualDataAbstract > &	data,
		const Eigen::Ref< const VectorXs > &	x
	)

virtual

Compute the Jacobian of the residual functions with respect to the state only.

It updates the Jacobian of the residual function based on the state only (i.e., it ignores the contact forces). This function is used in the terminal nodes of an optimal control problem.

Parameters

[in]	data	Residual data
[in]	x	State point \(\mathbf{x}\in\mathbb{R}^{ndx}\)

◆ print()

virtual void print ( std::ostream & os ) const

virtual

Print relevant information of the contact-control-grav residual.

Parameters

[out] os Output stream object

The documentation for this class was generated from the following files:

include/crocoddyl/multibody/fwd.hpp
include/crocoddyl/multibody/residuals/contact-control-gravity.hpp

Public Types

Public Member Functions

Public Attributes

Protected Attributes

Detailed Description

template<typename _Scalar> class crocoddyl::ResidualModelContactControlGravTpl< _Scalar >

Constructor & Destructor Documentation

◆ ResidualModelContactControlGravTpl() [1/2]

◆ ResidualModelContactControlGravTpl() [2/2]

Member Function Documentation

◆ calc() [1/2]

◆ calc() [2/2]

◆ calcDiff() [1/2]

◆ calcDiff() [2/2]

◆ print()

template<typename _Scalar>
class crocoddyl::ResidualModelContactControlGravTpl< _Scalar >