org.lsst.ccs.subsystem.pathfinder

Class FanPIControl

java.lang.Object

org.lsst.ccs.subsystem.pathfinder.FanPIControl

All Implemented Interfaces:

org.lsst.ccs.framework.HasLifecycle

public class FanPIControl
extends Object
implements org.lsst.ccs.framework.HasLifecycle

Implements a fan speed loop controller for the utility trunk system. Also allows open-loop speed control if no temperatures are specified.

Author:

Owen Saxton

Constructor Summary

Constructors

Constructor and Description
FanPIControl()

Method Summary

Modifier and Type	Method and Description
void	build() Sets up the fan speed control loop timer task.
double	getGain() Gets the gain.
Integer	getRpm() Gets the expected RPM
Double	getSpeed() Gets the fan speed (duty cycle).
long	getSpeedSetTime() Gets the speed set time.
double	getTemperature() Gets the target temperature.
double	getTimeConstant() Gets the time constant.
void	init() Initializes the parameters.
boolean	isLoopActive() Gets the control loop state.
void	reset() Resets the controller.
void	setGain(double gain) Sets the gain.
void	setSpeed(double speed) Sets the fan speed (duty cycle).
void	setTemperature(double temp) Sets the target temperature.
void	setTimeConstant(double time) Sets the time constant.
void	startLoop() Starts the control loop.
void	startLoop(double duty) Starts the control loop.
void	stopLoop() Stops the control loop.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.lsst.ccs.framework.HasLifecycle

postBuild, postInit, postShutdown, postStart, shutdown, start

Constructor Detail

FanPIControl

public FanPIControl()

Method Detail

build

public void build()

Sets up the fan speed control loop timer task.

Specified by:

build in interface org.lsst.ccs.framework.HasLifecycle

init

public void init()

Initializes the parameters.

Specified by:

init in interface org.lsst.ccs.framework.HasLifecycle

setSpeed

public void setSpeed(double speed)

Sets the fan speed (duty cycle).

Parameters:

speed - The speed to set

getSpeed

public Double getSpeed()

Gets the fan speed (duty cycle).

Returns:

The set speed

getRpm

public Integer getRpm()

Gets the expected RPM

Returns:

rpm The RPM value

getSpeedSetTime

public long getSpeedSetTime()

Gets the speed set time. Need to know this because it can take a couple of seconds to reach its set speed

Returns:

The set time (ms)

setTemperature

public void setTemperature(double temp)
                    throws VacuumException

Sets the target temperature.

Parameters:

temp - The temperature to set

Throws:

VacuumException

getTemperature

public double getTemperature()

Gets the target temperature.

Returns:

The set temperature

setGain

public void setGain(double gain)
             throws VacuumException

Sets the gain.

Parameters:

gain - The gain to set

Throws:

VacuumException

getGain

public double getGain()

Gets the gain.

Returns:

The gain

setTimeConstant

public void setTimeConstant(double time)
                     throws VacuumException

Sets the time constant.

Parameters:

time - The time constant to set

Throws:

VacuumException

getTimeConstant

public double getTimeConstant()

Gets the time constant.

Returns:

The time constant

startLoop

public void startLoop(double duty)
               throws VacuumException

Starts the control loop.

Parameters:

duty - The initial duty cycle value

Throws:

VacuumException

startLoop

public void startLoop()
               throws VacuumException

Starts the control loop.

Throws:

VacuumException

stopLoop

public void stopLoop()
              throws VacuumException

Stops the control loop.

Throws:

VacuumException

isLoopActive

public boolean isLoopActive()

Gets the control loop state.

Returns:

Whether the control loop is active

reset

public void reset()
           throws VacuumException

Resets the controller.

Throws:

VacuumException