org.lsst.ccs.subsystems.fcs

Class ForceSensor

java.lang.Object

org.lsst.ccs.subsystems.fcs.ForceSensor

public class ForceSensor
extends Object

Represents a model for a force sensor. A force sensor is used in loader subsystem to check if the clamp is CLAMPED or not. It's connected to the gateway. The value returned by the force sensor is coded on 1 byte. The analog value is used mainly to be displayed on the GUI. The gateway gives also a status to say if the clamp is CLAMPED or not.

Author:

virieux

Field Summary

Fields

Modifier and Type	Field and Description
double	transfert_coeff transfert function coefficient
double	transfert_Constante transfert function constante

Constructor Summary

Constructors

Constructor and Description
ForceSensor(int byteNumero) Builds a ForceSensor with a byte number.

Method Summary

Modifier and Type	Method and Description
int	getByteNumero() return byteNumero used by simulation
double	getForce() returns force value read on force senor in Newton.
FcsEnumerations.LockStatus	getForceStatus() return force Status
int	getMaxRangeValue() return high limit for force sensor value
double	getTransfert_coeff()
double	getTransfert_Constante()
int	getVoltage() Returns voltage value read on force sensor in mV.
boolean	isClamped()
double	transfertFunction(int tension) Computes force value from voltage given as argument.
void	updateForce(int[] hexaValues) updates voltage of force sensor from an array of hexa values.

Methods inherited from class java.lang.Object

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

Field Detail

transfert_coeff

@ConfigurationParameter
public double transfert_coeff

transfert function coefficient

transfert_Constante

@ConfigurationParameter
public double transfert_Constante

transfert function constante

Constructor Detail

ForceSensor

public ForceSensor(int byteNumero)

Builds a ForceSensor with a byte number.

Parameters:

byteNumero -

Method Detail

getVoltage

@Command(type=ACTION,
         level=1,
         description="Returns force sensor analog Value. Unit= mV")
public int getVoltage()

Returns voltage value read on force sensor in mV.

Returns:

getForce

@Command(type=ACTION,
         level=1,
         description="Returns force sensor value in Newton. Unit = N")
public double getForce()

returns force value read on force senor in Newton.

Returns:

force

getForceStatus

public FcsEnumerations.LockStatus getForceStatus()

return force Status

Returns:

getByteNumero

public int getByteNumero()

return byteNumero used by simulation

Returns:

getTransfert_coeff

public double getTransfert_coeff()

Returns:

transfert_coeff used by simulation

getTransfert_Constante

public double getTransfert_Constante()

Returns:

transfert_Constante used by simulation

getMaxRangeValue

public int getMaxRangeValue()

return high limit for force sensor value

Returns:

updateForce

public void updateForce(int[] hexaValues)

updates voltage of force sensor from an array of hexa values.

Parameters:

hexaValues -

transfertFunction

public double transfertFunction(int tension)

Computes force value from voltage given as argument. As the beginning the function is not linear. When closing the loader clamp, at beginning of closing, a small force begins to be applied on the dynamometric axis but no force is applied on the filter.

Parameters:

tension -

Returns:

isClamped

@Command(type=ACTION,
         level=1,
         description="Returns true if force sensor value is in range values where clamp is clamped.")
public boolean isClamped()

Returns:

true if force sensor value is in range values where clamp is clamped. If true, hooks are CLAMPED.