Class SeparatorAgent

java.lang.Object

neqsim.process.ml.multiagent.ProcessAgent

neqsim.process.ml.multiagent.SeparatorAgent

All Implemented Interfaces:

Serializable, Agent

public class SeparatorAgent
extends ProcessAgent

RL agent for separator level and pressure control.

Controls:

• Liquid outlet valve for level control
• Gas outlet valve for pressure control (optional)

Observations:

• liquid_level - Current level [0-1]
• pressure - Separator pressure [bar]
• level_error - Deviation from level setpoint
• pressure_error - Deviation from pressure setpoint
• liquid_valve_pos - Liquid valve position [0-1]
• gas_valve_pos - Gas valve position [0-1] (if controlled)

Version:

1.0

Author:

ESOL

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
private boolean	controlGasValve
private double	currentGasValvePos
private double	currentLiquidValvePos
private ThrottlingValve	gasValve
private ThrottlingValve	liquidValve
private final Separator	separator
private static final long	serialVersionUID

Fields inherited from class ProcessAgent

actionHigh, actionLow, actionNames, agentId, equipment, localConstraints, observationNames, setpoints, setpointWeights

Constructor Summary

Constructors

Constructor	Description
SeparatorAgent(String agentId, Separator separator, ThrottlingValve liquidValve)	Create separator agent with level control only.
SeparatorAgent(String agentId, Separator separator, ThrottlingValve liquidValve, ThrottlingValve gasValve)	Create separator agent with level and pressure control.

Method Summary

Modifier and Type	Method	Description
void	applyAction(double[] action)	Apply agent's action to the process.
private void	applyValvePosition(ThrottlingValve valve, double position)
double	computeReward(StateVector globalState, double[] action)	Compute agent's local reward.
double[]	getLocalObservation(StateVector globalState)	Get the agent's local observation from global state.
Separator	getSeparator()	Get the separator.
private void	initializeSpaces()
void	setLevelSetpoint(double level)	Set level setpoint.
void	setPressureSetpoint(double pressure)	Set pressure setpoint.

Methods inherited from class ProcessAgent

computeConstraintPenalty, computeSetpointReward, getActionDim, getActionHigh, getActionLow, getActionNames, getAgentId, getEquipment, getLocalConstraints, getObservationDim, getObservationNames, getSetpoint, isTerminated, setSetpoint

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface Agent

getMessage, receiveMessages

Field Details

serialVersionUID

private static final long serialVersionUID

See Also:

• Constant Field Values

separator

private final Separator separator

liquidValve

private ThrottlingValve liquidValve

gasValve

private ThrottlingValve gasValve

controlGasValve

private boolean controlGasValve

currentLiquidValvePos

private double currentLiquidValvePos

currentGasValvePos

private double currentGasValvePos

Constructor Details

SeparatorAgent

public SeparatorAgent(String agentId,
 Separator separator,
 ThrottlingValve liquidValve)

Create separator agent with level control only.

Parameters:

agentId - agent ID

separator - the separator

liquidValve - liquid outlet valve

SeparatorAgent

public SeparatorAgent(String agentId,
 Separator separator,
 ThrottlingValve liquidValve,
 ThrottlingValve gasValve)

Create separator agent with level and pressure control.

Parameters:

agentId - agent ID

separator - the separator

liquidValve - liquid outlet valve

gasValve - gas outlet valve

Method Details

initializeSpaces

private void initializeSpaces()

getLocalObservation

public double[] getLocalObservation(StateVector globalState)

Description copied from interface: Agent

Get the agent's local observation from global state.

Parameters:

globalState - full system state

Returns:

local observation array

applyAction

public void applyAction(double[] action)

Description copied from interface: Agent

Apply agent's action to the process.

Parameters:

action - action array

applyValvePosition

private void applyValvePosition(ThrottlingValve valve,
 double position)

computeReward

public double computeReward(StateVector globalState,
 double[] action)

Description copied from interface: Agent

Compute agent's local reward.

Specified by:

computeReward in interface Agent

Overrides:

computeReward in class ProcessAgent

Parameters:

globalState - current global state

action - action taken

Returns:

local reward

setLevelSetpoint

public void setLevelSetpoint(double level)

Set level setpoint.

Parameters:

level - target level [0-1]

setPressureSetpoint

public void setPressureSetpoint(double pressure)

Set pressure setpoint.

Parameters:

pressure - target pressure [bar]

getSeparator

public Separator getSeparator()

Get the separator.

Returns:

separator