CEN/TR 17603-60:2022

Space engineering - Control engineering handbook

This Handbook deals with control systems developed as part of a space project. It is applicable to all the elements of a space system, including the space segment, the ground segment and the launch service segment. The handbook covers all aspects of space control engineering including requirements definition, analysis, design, production, verification and validation, transfer, operations and maintenance. It describes the scope of the space control engineering process and its interfaces with management and product assurance, and explains how they apply to the control engineering process.

Raumfahrttechnik - Handbuch zur Regelungstechnik

Ingénierie spatiale - Manuel d'ingénierie du contrôle

Vesoljska tehnika - Priročnik o nadzornem inženiringu

Ta priročnik zajema nadzorne sisteme, razvite kot del vesoljskega projekta. Uporablja se za vse elemente vesoljskega sistema, vključno z vesoljskim delom, zemeljskim delom in lansirnimi storitvami. Ta priročnik zajema vse vidike inženiringa vesoljskega nadzora, vključno z opredelitvijo zahtev, analizo, načrtovanjem, proizvodnjo, preverjanjem in potrjevanjem, prenosom, delovanjem ter vzdrževanjem. Opisuje obseg procesa inženiringa vesoljskega nadzora in njegove vmesnike z upravljanjem in zagotavljanjem izdelkov ter pojasnjuje, kako se uporabljajo za proces inženiringa nadzora.

General Information

• Status: Published
• Publication Date: 11-Jan-2022
• ICS: 49.140 - Space systems and operations
• Technical Committee: CEN/CLC/TC 5 - Space
• Drafting Committee: CEN/CLC/TC 5/WG 6 - Upstream standards
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 12-Jan-2022
• Due Date: 29-Dec-2022
• Completion Date: 12-Jan-2022
• Mandate: M/496 - Mandate addressed to CEN, CENELEC and ETSI to develop standardisation regarding space industry (Phase 3 of the process)
• Ref Project: SIST-TP CEN/TR 17603-60:2022 - Space engineering - Control engineering handbook

Standards Content (Sample)

SLOVENSKI STANDARD
kSIST-TP FprCEN/TR 17603-60:2021
01-oktober-2021
Vesoljska tehnika - Priročnik o nadzornem inženiringu
Space engineering - Control engineering handbook
Raumfahrttechnik - Handbuch zur Regelungstechnik
Ingénierie spatiale - Manuel d'ingénierie du contrôle
Ta slovenski standard je istoveten z: FprCEN/TR 17603-60
ICS:
49.140 Vesoljski sistemi in operacije Space systems and
operations
kSIST-TP FprCEN/TR 17603-60:2021 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

kSIST-TP FprCEN/TR 17603-60:2021

kSIST-TP FprCEN/TR 17603-60:2021

TECHNICAL REPORT
FINAL DRAFT
FprCEN/TR 17603-60
RAPPORT TECHNIQUE
TECHNISCHER BERICHT
August 2021
ICS 49.140
English version
Space engineering - Control engineering handbook
Ingénierie spatiale - Manuel d'ingénierie du contrôle Raumfahrttechnik - Handbuch zur Regelungstechnik

This draft Technical Report is submitted to CEN members for Vote. It has been drawn up by the Technical Committee
CEN/CLC/JTC 5.
CEN and CENELEC members are the national standards bodies and national electrotechnical committees of Austria, Belgium,
Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia,
Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a Technical Report. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a Technical Report.

CEN-CENELEC Management Centre:
Rue de la Science 23, B-1040 Brussels
© 2021 CEN/CENELEC All rights of exploitation in any form and by any means Ref. No. FprCEN/TR 17603-60:2021 E
reserved worldwide for CEN national Members and for
CENELEC Members.
kSIST-TP FprCEN/TR 17603-60:2021
FprCEN/TR 17603-60:2021 (E)
Table of contents
European Foreword . 4
Introduction . 5
1 Scope . 6
2 References . 7
3 Terms, definitions and abbreviated terms . 8
3.1 Terms from other documents . 8
3.2 Terms specific to the present handbook . 8
3.3 Abbreviated terms. 12
4 Space system control engineering process . 14
4.1 General . 14
4.1.1 The general control structure . 14
4.1.2 Control engineering activities . 17
4.1.3 Organization of this Handbook . 17
4.2 Definition of the control engineering process . 17
4.3 Control engineering tasks per project phase . 18
5 Control engineering process recommendations . 24
5.1 Integration and control . 24
5.1.1 General . 24
5.1.2 Organization and planning of CE activities . 24
5.1.3 Contribution to system engineering data base and documentation . 24
5.1.4 Management of interfaces with other disciplines . 24
5.1.5 Contribution to human factors engineering . 25
5.1.6 Budget and margin philosophy for control . 25
5.1.7 Assessment of control technology and cost effectiveness . 25
5.1.8 Risk management . 25
5.1.9 Support to control components procurement . 25
5.1.10 Support to change management involving control . 26
kSIST-TP FprCEN/TR 17603-60:2021
FprCEN/TR 17603-60:2021 (E)
5.1.11 Control engineering capability assessment and resource
management . 26
5.2 Requirements engineering . 26
5.2.1 General . 26
5.2.2 Generation of control requirements . 26
5.2.3 Allocation of control requirements to control components. 27
5.2.4 Control verification requirements . 30
5.2.5 Control operations requirements . 30
5.3 Analysis . 30
5.3.1 General . 30
5.3.2 Analysis tasks, methods and tools . 31
5.3.3 Requirements analysis . 32
5.3.4 Disturbance analysis . 33
5.3.5 Performance analysis . 33
5.4 Design and configuration . 35
5.4.1 General . 35
5.4.2 Functional design . 36
5.4.3 Operational design . 36
5.4.4 Control implementation architecture . 36
5.4.5 Controller design . 37
5.5 Verification and validation . 38
5.5.1 Definition of control verification strategy . 38
5.5.2 Preliminary verification of performance . 39
5.5.3 Final functional and performance verification . 39
5.5.4 In­flight validation . 39

Figures
Figure 4-1: General control structure . 14
Figure 4-2: Example of controller structure . 16
Figure 4-3: Interaction between CE activities . 18

Tables
Table 4-1: Summary of control engineering tasks . 19
Table 4-2: Control engineering inputs, tasks and outputs, Phase 0/A . 20
Table 4-3: Control engineering inputs, tasks and outputs, Phase B . 21
Table 4-4: Control engineering inputs, tasks and outputs, Phase C/D . 22
Table 4-5: Control engineering inputs, tasks and outputs, Phase E/F . 23
Table 5-1: Contributions of analysis to the CE process. 31

kSIST-TP FprCEN/TR 17603-60:2021
FprCEN/TR 17603-60:2021 (E)
European Foreword
This document (FprCEN/TR 17603-60:2021) has been prepared by Technical Committee
CEN/CLC/JTC 5 “Space”, the secretariat of which is held by DIN.
It is highlighted that this technical report does not contain any requirement but only collection of data
or descriptions and guidelines about how to organize and perform the work in support of EN 16603-
60.
This Technical report (FprCEN/TR 17603-60:2021) originates from ECSS-E-HB-60A.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such
patent rights.
This document has been prepared under a mandate given to CEN by the European Commission and
the European Free Trade Association.
This document has been developed to cover specifically space systems and has therefore precedence
over any TR covering the same scope but with a wider domain of applicability (e.g.: aerospace).

This document is currently submitted to the CEN CONSULTATION.
kSIST-TP FprCEN/TR 17603-60:2021
FprCEN/TR 17603-60:2021 (E)
Introduction
Control engineering, particularly as applied to space systems, is a multi­disciplinary field. The
analysis, design and implementation of complex (end to end) control systems include aspects of
system engineering, electrical and electronic engineering, mechanical engineering, software
engineering, communications, ground systems and operations – all of which have dedicated ECSS
engineering standards and handbooks. This Handbook is not intended to duplicate them.
This Handbook focuses on the specific issues involved in control engineering and is intended to be
used as a structured set of systematic engineering provisions, referring to the specific standards and
handbooks of the discipline where appropriate. For this, and reasons such as the very rapid progress
of control component technologies and associated “de facto” standards, this Handbook does not go to
the level of describing equipment or interfaces.
This Handbook is not intended to replace textbook material on control systems theory or technology,
and such material is intentionally avoided. The readers and users of this Handbook are assumed to
possess general knowledge of control systems engineering and its applications to space missions.
kSIST-TP FprCEN/TR 17603-60:2021
FprCEN/TR 17603-60:2021 (E)
Scope
This Handbook deals with control systems developed as part of a space project. It is applicable to all
the elements of a space system, including the space segment, the ground segment and the launch
service segment.
The handbook covers all aspects of space control engineering including requirements definition,
analysis, design, production, verification and validation, transfer, operations and maintenance.
It describes the scope of the space control engineering process and its interfaces with management and
product assurance, and explains how they apply to the control engineering process.
kSIST-TP FprCEN/TR 17603-60:2021
FprCEN/TR 17603-60:2021 (E)
References
EN References References in text Title
EN 16601-00-01 ECSS-S-ST-00-01 ECSS System – Glossary of terms
EN 16603-10 ECSS-E-ST-10 Space engineering – System engineering general
requirements
EN 16603-10-04 ECSS-E-ST-10-04 Space engineering – Space environment
EN 16603-70 ECSS-E-ST-70 Space engineering – Ground systems and operations
EN 16602-20 ECSS-Q-ST-20 Space product assurance – Quality assurance

kSIST-TP FprCEN/TR 17603-60:2021
FprCEN/TR 17603-60:2021 (E)
Terms, definitions and abbreviated terms
3.1 Terms from other documents
For the purpose of this document, the terms and definitions from ECSS-S-ST-00-01 apply.
3.2 Terms specific to the present handbook
3.2.1 actuator
technical system or device which converts commands from the controller into physical effects on the
controlled plant
3.2.2 autonomy
capability of a system to perform its functions in the absence of certain resources
NOTE The degree of (control) autonomy of a space system is defined
through the allocation of its overall control functions among
controller hardware, software, human operations, the space and
ground segment, and preparation and execution. A low degree of
autonomy is characterized by a few functions performed in the
software of the space segment. Conversely, a high degree of
autonomy assigns even higher level functions to space software,
relieving humans and the ground segment from issuing control
commands, at least for the routine operations. The degree of
autonomy can also be considered to be the amount of machine
intelligence installed in the system.
3.2.3 control
function of the controller to derive control commands to match the current or future estimated state
with the desired state
NOTE This term is used as in GNC.
3.2.4 control command
output of the controller to the actuators and the sensors
NOTE This definition is applicable in case of sensors with command
interfaces.
kSIST-TP FprCEN/TR 17603-60:2021
FprCEN/TR 17603-60:2021 (E)
3.2.5 control component
element of the control system which is used in part or in total to
...

SLOVENSKI STANDARD
01-marec-2022
Vesoljska tehnika - Priročnik o nadzornem inženiringu
Space engineering - Control engineering handbook
Raumfahrttechnik - Handbuch zur Regelungstechnik
Ingénierie spatiale - Manuel d'ingénierie du contrôle
Ta slovenski standard je istoveten z: CEN/TR 17603-60:2022
ICS:
49.140 Vesoljski sistemi in operacije Space systems and
operations
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

TECHNICAL REPORT CEN/TR 17603-60

RAPPORT TECHNIQUE
TECHNISCHER BERICHT
January 2022
ICS 49.140
English version
Space engineering - Control engineering handbook
Ingénierie spatiale - Manuel d'ingénierie du contrôle Raumfahrttechnik - Handbuch zur Regelungstechnik

This Technical Report was approved by CEN on 29 November 2021. It has been drawn up by the Technical Committee
CEN/CLC/JTC 5.
CEN and CENELEC members are the national standards bodies and national electrotechnical committees of Austria, Belgium,
Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia,
Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.

CEN-CENELEC Management Centre:
Rue de la Science 23, B-1040 Brussels
© 2022 CEN/CENELEC All rights of exploitation in any form and by any means
Ref. No. CEN/TR 17603-60:2022 E
reserved worldwide for CEN national Members and for
CENELEC Members.
Table of contents
European Foreword . 4
Introduction . 5
1 Scope . 6
2 References . 7
3 Terms, definitions and abbreviated terms . 8
3.1 Terms from other documents . 8
3.2 Terms specific to the present handbook . 8
3.3 Abbreviated terms. 12
4 Space system control engineering process . 14
4.1 General . 14
4.1.1 The general control structure . 14
4.1.2 Control engineering activities . 17
4.1.3 Organization of this Handbook . 17
4.2 Definition of the control engineering process . 17
4.3 Control engineering tasks per project phase . 18
5 Control engineering process recommendations . 24
5.1 Integration and control . 24
5.1.1 General . 24
5.1.2 Organization and planning of CE activities . 24
5.1.3 Contribution to system engineering data base and documentation . 24
5.1.4 Management of interfaces with other disciplines . 24
5.1.5 Contribution to human factors engineering . 25
5.1.6 Budget and margin philosophy for control . 25
5.1.7 Assessment of control technology and cost effectiveness . 25
5.1.8 Risk management . 25
5.1.9 Support to control components procurement . 25
5.1.10 Support to change management involving control . 26
5.1.11 Control engineering capability assessment and resource
management . 26
5.2 Requirements engineering . 26
5.2.1 General . 26
5.2.2 Generation of control requirements . 26
5.2.3 Allocation of control requirements to control components. 27
5.2.4 Control verification requirements . 30
5.2.5 Control operations requirements . 30
5.3 Analysis . 30
5.3.1 General . 30
5.3.2 Analysis tasks, methods and tools . 31
5.3.3 Requirements analysis . 32
5.3.4 Disturbance analysis . 33
5.3.5 Performance analysis . 33
5.4 Design and configuration . 35
5.4.1 General . 35
5.4.2 Functional design . 36
5.4.3 Operational design . 36
5.4.4 Control implementation architecture . 36
5.4.5 Controller design . 37
5.5 Verification and validation . 38
5.5.1 Definition of control verification strategy . 38
5.5.2 Preliminary verification of performance . 39
5.5.3 Final functional and performance verification . 39
5.5.4 In-flight validation . 39

Figures
Figure 4-1: General control structure . 14
Figure 4-2: Example of controller structure . 16
Figure 4-3: Interaction between CE activities . 18

Tables
Table 4-1: Summary of control engineering tasks . 19
Table 4-2: Control engineering inputs, tasks and outputs, Phase 0/A . 20
Table 4-3: Control engineering inputs, tasks and outputs, Phase B . 21
Table 4-4: Control engineering inputs, tasks and outputs, Phase C/D . 22
Table 4-5: Control engineering inputs, tasks and outputs, Phase E/F . 23
Table 5-1: Contributions of analysis to the CE process. 31

European Foreword
This document (CEN/TR 17603-60:2022) has been prepared by Technical Committee CEN/CLC/JTC 5
“Space”, the secretariat of which is held by DIN.
It is highlighted that this technical report does not contain any requirement but only collection of data
or descriptions and guidelines about how to organize and perform the work in support of EN 16603-
60.
This Technical report (CEN/TR 17603-60:2022) originates from ECSS-E-HB-60A.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document has been prepared under a mandate given to CEN by the European Commission and
the European Free Trade Association.
This document has been developed to cover specifically space systems and has therefore precedence
over any TR covering the same scope but with a wider domain of applicability (e.g.: aerospace).
Introduction
Control engineering, particularly as applied to space systems, is a multi-disciplinary field. The
analysis, design and implementation of complex (end to end) control systems include aspects of
system engineering, electrical and electronic engineering, mechanical engineering, software
engineering, communications, ground systems and operations – all of which have dedicated ECSS
engineering standards and handbooks. This Handbook is not intended to duplicate them.
This Handbook focuses on the specific issues involved in control engineering and is intended to be
used as a structured set of systematic engineering provisions, referring to the specific standards and
handbooks of the discipline where appropriate. For this, and reasons such as the very rapid progress
of control component technologies and associated “de facto” standards, this Handbook does not go to
the level of describing equipment or interfaces.
This Handbook is not intended to replace textbook material on control systems theory or technology,
and such material is intentionally avoided. The readers and users of this Handbook are assumed to
possess general knowledge of control systems engineering and its applications to space missions.
Scope
This Handbook deals with control systems developed as part of a space project. It is applicable to all
the elements of a space system, including the space segment, the ground segment and the launch
service segment.
The handbook covers all aspects of space control engineering including requirements definition,
analysis, design, production, verification and validation, transfer, operations and maintenance.
It describes the scope of the space control engineering process and its interfaces with management and
product assurance, and explains how they apply to the control engineering process.
References
EN References References in text Title
EN 16601-00-01 ECSS-S-ST-00-01 ECSS System – Glossary of terms
EN 16603-10 ECSS-E-ST-10 Space engineering – System engineering general
requirements
EN 16603-10-04 ECSS-E-ST-10-04 Space engineering – Space environment
EN 16603-70 ECSS-E-ST-70 Space engineering – Ground systems and operations
EN 16602-20 ECSS-Q-ST-20 Space product assurance – Quality assurance

Terms, definitions and abbreviated terms
3.1 Terms from other documents
For the purpose of this document, the terms and definitions from ECSS-S-ST-00-01 apply.
3.2 Terms specific to the present handbook
3.2.1 actuator
technical system or device which converts commands from the controller into physical effects on the
controlled plant
3.2.2 autonomy
capability of a system to perform its functions in the absence of certain resources
NOTE The degree of (control) autonomy of a space system is defined
through the allocation of its overall control functions among
controller hardware, software, human operations, the space and
ground segment, and preparation and execution. A low degree of
autonomy is characterized by a few functions performed in the
software of the space segment. Conversely, a high degree of
autonomy assigns even higher level functions to space software,
relieving humans and the ground segment from issuing control
commands, at least for the routine operations. The degree of
autonomy can also be considered to be the amount of machine
intelligence installed in the system.
3.2.3 control
function of the controller to derive control commands to match the current or future estimated state
with the desired state
NOTE This term is used as in GNC.
3.2.4 control command
output of the controller to the actuators and the sensors
NOTE This definition is applicable in case of sensors with command
interfaces.
3.2.5 control component
element of the control system which is used in part or in total to achieve the control objectives
3.2.6 control feedback
input to the controller from the sensors and the actuators
NOTE This definition is applicable to actuators with status feedback.
3.2.7 control function
group of related control actions (or activities) contributing to achieving some of the control objectives
NOTE A control function describes what the controller does, usually by
specifying the necessary inputs, boundary conditions, and
expected outputs.
3.2.8 control mode
temporary operational configuration of the control sy
...