RtjAocsFramework.SequentialDataProcessing
Class TorqueToThrusterPrototype

java.lang.Object
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  +--RtjAocsFramework.BasicObjects.RootObject
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        +--RtjAocsFramework.BasicObjects.AocsObject
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              +--RtjAocsFramework.SequentialDataProcessing.AbstractControlChannel
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                    +--RtjAocsFramework.SequentialDataProcessing.ControlChannelBlock
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                          +--RtjAocsFramework.SequentialDataProcessing.TorqueToThrusterPrototype

All Implemented Interfaces:

Configurable, DataSink, DataSource, Resettable, Telemeterable

public class TorqueToThrusterPrototype

extends ControlChannelBlock

Control block to perform the conversion from torque requests around the spacecraft axes to the on- and delay-times for the set of six thrusters of the AOCS prototype. Outputs 1 to 6 represent the delay-times. Outputs 7 to 12 represent the on-times. The nominal torque level on each thruster is 'thuTorque'. The nominal torques in spacecraft axes generated by the firing of each thruster are as shown in the table below: X Axis Y Axis Z Axis THU_1 +thuTorque 0 0 THU_2 -thuTorque 0 0 THU_3 0 +thuTorque 0 THU_4 0 -thuTorque 0 THU_5 0 0 +thuTorque THU_6 0 0 -thuTorque The thrusters are controlled in on-modulation. The thruster delay-times are set to zero. The on-time are computed as follows: onTime = torqueRequest*period/thuTorque where 'torqueRequest' is the torque request, 'period' is the on- modulation period and 'thuTorque' is the nominal torque delivered by the thrusters. If the torque request is larger than the thruster torque, then the on-time is saturated and set equal to the on-modulation period.

Copyright: see the Copyright Notice.

Version:

1.0

Author:

Alessandro Pasetti (University of Konstanz), Vaclav Cechticky (IfA ETHZ)

See Also:

The Sequential Data Processing Framelet Document

Field Summary

Fields inherited from class RtjAocsFramework.SequentialDataProcessing.ControlChannelBlock

dataSourceOutputPosition, initFlag, input, inputLink, onHold, output, outputBuffer, p, state, validityTime

Fields inherited from class RtjAocsFramework.SequentialDataProcessing.AbstractControlChannel

ccLink, channelPropagation, enclosingControlChannel, lastPropagatedTime, m, n, noPropagation, propagationToken, recoveryAction, totalPropagation

Fields inherited from interface RtjAocsFramework.TelemetryManagement.Telemeterable

DEBUG_TM, LONG_TM, NORMAL_TM, NTMFORMATS, SHORT_TM

Constructor Summary

TorqueToThrusterPrototype(double t, double p)
Creates a new TorqueToThrusterPrototype object with the specified nominal torque delivered by the thrusters and period.

Method Summary

protected void

propagationAlgorithm(int t) The propagation algorithm of the TorqueToThrusterPrototype block.

Methods inherited from class RtjAocsFramework.SequentialDataProcessing.ControlChannelBlock

getNumberOfStates, getOutput, getState, getValidityTime, isConfigured, isOnHold, linkInput, linkInput, propagate, reset, resetConfiguration, resetMemory, setInput, setInputSize, setOnHold, setOutputSize, setState, setStateSize

Methods inherited from class RtjAocsFramework.SequentialDataProcessing.AbstractControlChannel

getEnclosingControlChannel, getIllegalTimeRecoveryAction, getLastPropagatedTime, getNumberOfInputs, getNumberOfOutputs, getPropagationToken, reset, setEnclosingControlChannel, setIllegalTimeRecoveryAction, setNumberOfInputs, setNumberOfOutputs, setPropagationToken

Methods inherited from class RtjAocsFramework.BasicObjects.AocsObject

addConfigurationListener, addFailureListener, finalize, getAocsClock, getConfigurationListenerList, getCycle, getDestructionRecoveryAction, getFailureListenerList, getSystemManager, getTelemetryFormat, getTelemetryImageLength, getTime, removeConfigurationListener, removeFailureListener, reportConfigurationEvent, reportFailure, resetStaticConfiguration, setAocsClock, setDestructionRecoveryAction, setMaxNumberOfConfigurationListeners, setMaxNumberOfFailureListeners, setSystemManager, setTelemetryFormat, writeToTelemetry

Methods inherited from class RtjAocsFramework.BasicObjects.RootObject

getClassId, getInstanceId, setClassId

Methods inherited from class java.lang.Object

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

Constructor Detail

TorqueToThrusterPrototype

public TorqueToThrusterPrototype(double t,
                                 double p)

Creates a new TorqueToThrusterPrototype object with the specified nominal torque delivered by the thrusters and period.

Parameters:

t - the nominal torque delivered by the thrusters

p - the period

Method Detail

propagationAlgorithm

protected void propagationAlgorithm(int t)

The propagation algorithm of the TorqueToThrusterPrototype block.

Specified by:

propagationAlgorithm in class ControlChannelBlock

Parameters:

t - the target time