request for proposal (rfp) for single axis …...request for proposal (rfp) for single axis...

Request for Proposal (RFP)

For

Single Axis Electronically Controlled Portable Near

Field Antenna Scanner

August 2016

Space Applications Centre (SAC)

Indian Space Research Organization (ISRO)

Ahmedabad- 380015

INDIA

This document contains proprietary information of SAC/ISRO, Ahmedabad and is protected by

copyright laws and international treaties. Unauthorized copy or reproduction of this document in

whole or in part without the prior written consent of SAC/ISRO is strictly forbidden and

constitutes a copyright infringement.

SAC/ISRO reserves the right to alter this information at any time without notice.

Contents

Sr. No. Description Page

1 General 4

2 Description of Scanner 4

3 Scope of Work 4

4 Applicable Documents/Drawings/Sketches 5

5 Design Specifications 5

6 General Technical Details/Instructions 7

7 Technical Terms and Conditions 10

9 Deliverable Items 13

12 Annexure- 1 14

13 Annexure – 2 15



RFP for Single Axis Electronically Controlled Portable Near Field Antenna Scanner

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1 General

Space Applications Centre (SAC/ISRO) is currently engaged in the development of a

number of Remote Sensing Satellites for various land and ocean applications.

A new Portable scanner with One Axis Electronic control and one axis manual control with

suitable support structures for different test setups is proposed to be developed and used in

clean room. The prime use of this scanner is to test microwave antenna.

Space Applications Centre seeks a detailed proposal for the Design, Fabrication, Test

and delivery of the 1‐Axis Electronic with one axis (Z) manual controlled Scanner for

Microwave Antenna Measurement.

2 Description of Scanner

Proposed scanning mechanism or simply the ‘Scanner’, will be used for radiation pattern

measurement and characterization of Planar Array Antenna (PAA) in single direction. For

this purpose, it is required to position the ‘Probe’ in point-to-point/continuous on line of

scan in front of antenna, aligned parallel to this scanner’s reference scan line (with probe

axis perpendicular) at a distance of about 1000-2500 mm. Refer Sketches in Fig: 1,

(Anexture-1)

Probe/s (i.e. Horn/s) will be the responsibility of SAC and not included for vendor’s

design consideration. Vendor has to consider maximum mass of the Probe assembly as 5

kg. The interface brackets (for each probe) for mounting such Probes has to be designed

and fabricated by vendor. For details of Probes (Two probes), please refer sketch in Fig.-2

(Annexure-1).

The performance of Scanner need to demonstrate at vender’s end and in SAC clean room.

3 Scope of Work 3.1 Requirements (Refer following sections of this document for details)

3.1.1 Vendor has to deliver a scanner with 1-Axis Travel electronic plus one manual (Z-

axis) travel of probe

3.1.1.1 Scanner Module assembly with controller

3.1.1.2 Laptop with interface hardware & software

3.1.1.3 Support structures for Horizontal and Vertical measurement setup

3.1.1.4 Mounting Brackets for Two Probes (shown in Annexure-1, Fig-2-a &2-b) 3.1.1.5 Required accessories/Hardware/software etc.

3.1.1.6 Containers suitable for Road/Air Transport

3.2 Features

3.2.1.1 Modular in Design for portability

3.2.1.2 Ease of assembly and dismantling of modules with ease in minimum possible

time using standard tools

3.2.1.3 Provision for alignment

Following are the activities in broader sense.

1. Product Conceptualization (Concept Design)


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2. Structural design & Analysis

3. Geometric design/drawings (3D and 2D CAD)

4. Fabrication and assembly.

5. Pre-dispatch testing at vendor’s end

6. Packaging and Shipping.

7. Erection, installation at SAC (Building No. 53).

Post-Installation testing for performance demonstration/ Acceptance tests. (See Section-5 and

Terms and conditions for more details).

4 Other applicable Documents / Drawings / Sketches 4.1 Annexure-1

Sketch for Scanner configuration (to describe requirements only). Ref. Fig.: -1

(Anexture-1)

4.2 Annexure-2

Sketch of Probe. Ref. Fig.-2(a) and Fig-2(b)

4.3 Annexure-3 Block Diagram for Testing

4.4 Annexure-4

Acceptance Test Plan

5 Design Specifications

Sr. No. Description Specification Remark

5.1 Scanner

Module with

Controller

Modular Can be 2 or 3 module with

proper Handling points for

assembly and movements.

5.1.1 Single Axis

Electronic

controlled

4000 mm Travel

Ref. Fig.-1( Anexture-1)

Electronic controlled with

servo drive with feedback

by encoder and position

has to be displayed and

controlled by controller

and connected Laptop

5.1.1.1 Travel Speed → Controlled traverse - (@0-

500mm /minute) Depends on

drive selection

→ Rapid traverse - Depends on

drive selection and stability of

Scanner structure

→ Smooth start and stop

→ Should be

Programmable

→ proper locking for each

stop of travel

5.1.1.2 Readout

Resolution

0.01 mm or better


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5.1.1.3 Positional

Accuracy

Better than +/- 0.2 mm over the

entire range of travel

For both orientation

(Horizontal/Vertical Test

Setups) and should be

maintain after reassembly

of the modules.

5.1.1.4 Repeatability for

pointing (probe

position)

Better than +/- 0.15 mm over

the entire range of travel

For each orientation

(Horizontal & Vertical

Test Setups)

5.1.1.5 Programmable

Parameters of

Scanner

Controller

hardware

− Single axis dedicated

Electronic Controller with

Point-to-point and continuous

travel

− Manual Data Input (MDI)

Mode

− Program execution - Block

by Block

− Program Execution -

Continuous

− Edit mode (for manual

Inputs)

− Programmable travel speed

− Operation and data

communication between

Scanner and Laptop with

Graphical User Interface

− Operation of scanner from

Controller and Laptop

− Programmable Dwell (stops

at defined point/s for

programmed time interval

before execution of next

command)

− Controller should be of

standard make

conforming Industrial

standard

− All Hardware, Software

and accessories required

for interconnection

between scanner and

controller as well as

between controller and

Laptop

− It should be compact

and easy to transport

5.1.1.6 Cables for

connection

between Scanner

and Controller

10 meter using high grade

cables conforming

National/International standards

(Subjected to SAC Approval for

length change)

Final approval from SAC

as per design

5.1.2 Manual Travel

of Probe/Horn

along

perpendicular

direction of XY

Plane (Z-Axis)

100 mm

Ref. Fig. 1 (Annexture-1)

With Backlash less than

0.2mm and positive

locking.

Readout Mechanical/Vernier scale with

resolution of 0.5 mm or better


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6 General Technical Details/Instructions

5.2 Support

structure for

scanner module

- Support structure/s should be

modular and preferably

common or separate for

Horizontal and vertical test

setups

- Base height 500mm with

Provision for adjust

height adjustment +/- 500

mm

Should have

− Provision for adjust

height (+/- 500 mm) as

per requirement

− leveling provision with

screw jack

− Caster wheels for easy

movement − Should have Handling

points with required

handling accessories

5.2.1 Structure for

Vertical Setup

Support structure/s should be

modular and can be used for

Horizontal and vertical test

setups

Height of structure should

be kept to align scanner

module center with

antenna center.

− Should have provision

for dead weights for

stability of Scanner

5.2.2 Structure for

Horizontal Setup

Two Structures Height of structure should

be kept to align scanner

module Centre with

antenna Centre

5.3 Containers for

transportation

Metal Containers for

− Scanner module/s

− Controller with accessories

− Support structures

Containers should be

− Water proof/resistance

− Suitable for Road and

Air transportation

loads

− With suitable handling

points with handling

accessories − With support

pads/wheels

Sr. No. Description Specification Remark

6.1 Materials Material should be from

standard make with assured

quality

Vendor has to provide

Material’s chemical

analysis report if asked

by SAC

6.2 Standard components Should be of standard Make

from reputed manufacturers

with National/International

standards.

Depends on availability

as per the design

requirements.


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6.2.1 3 Liner motion

components

THK Make

6.2.2 3 All Types of Bearings SKF/FAG

6.2.3 3 Servo/Drive Motors

with or without

gearboxes

Siemens or equivalent Should ensure smooth

acceleration/ retardation

with suitable S-curve

characteristics for jerk

free operation

6.2.4 3 All

Electrical/Electronic

components and Cables

From Standard Manufacturers

conforming to

National/International standards

6.3 Processes

6.3.1 3 Manufacturing/Fabricat

ion

As per Industrial standards Should be free from any

defects.

Will be reviewed before

and in progress stages by

SAC engineer/s

6.3.2 3 Surface Treatments and

Painting

- As per Design requirements

- Since Scanner will be used in

clean lab, surface treatment

should conform to clean lab

requirement. Subjected to

approval from SAC.

Standard process and

procedure adopted in

Industry should be

followed

6.4 Safety

6.4.1 3 Limit switches/Stops

Electrical Limit switches and

Mechanical Stops to be

provided

To prevent

overshooting/Accident

6.4.2 3 Safety of Cables during

operation

Proper arrangement has to be

provided

6.4.3 3 Stability of Structure of

Scanner mechanism

and support structure/s

Has to do proper structure

analysis with assurance against

any mechanical failure and

toppling of structure

Will be reviewed by

SAC Engineer/s

6.4.4 3 Human safety As per the industrial norms for

Mechanical as well as electrical

aspects

6.5 Operating conditions Has to be installed in Clean

room Lab.

Scanner should be free

from any oil leakages

and should not expel any

type of contamination.

6.5.1 3 Temperature +15 ºC to +35 ºC

6.5.2 3 Humidity 70% RH Max.


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6.6 Probe /Horn Assembly

(Not to be fabricated

by Vendor)

Interface Brackets has

to be designed and

Fabricated by Vendor.

Mass of probe assembly about 5

kg. Max

− Interface Brackets for Both

the Probes to be designed and

fabricated by vendor

Will be from SAC (Refer

Annexure-1 for details)

(Probe Assembly =

Probe + connectors +

Data cable)

6.7 Electrical Supply Should operate on:

− 230V, 50 Hz (Indian Standard) and 110V, 60Hz (US Standard)

− Provision of operating on one either at a time.

Vendor has to provide

voltage stabilizer with

isolation transformer

6.8 Laptop with all

required hardware and

software for

interconnection with

scanner’s controller

(If Laptop is not

feasible due to

technical reason,

Desktop PC can be

provided with

equivalent

Specifications after

approval from SAC)

Laptop/ Computer

Configuration

− Processor - Intel i5 (current Generation) or higher

− OS - windows 10 or Higher − RAM - 4 GB DDR3 (minimum) − Graphics Memory - 2 GB

(minimum) − Monitor - LED min 14”

(Minimum)

Vendor Has to

Demonstrate

connectivity and all

operations between

Laptop/ Computer and

Scanner Controller as

well as Scanner with

user Interface Software

6.9 Connectivity between

Machine controller and

Laptop/Computer

Industry standard connectivity

such as RS 232 / USB/ Ethernet/

GPIB etc.

− Software needed on SAC Laptop/ Computer for communication should be provided with upgradation facility.

− API’s should be provided for software integration with third party software for system integration.

Any other non-standard

communication channel

should be subjected to

approval from SAC.


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7 Technical Terms and Conditions

7.1 Scanner should be designed in modular with one module contain scanner mechanism

assembly (scanner module may have sub modules) and others should be support

structures for Horizontal Test setup and Vertical Test setup. Control unit has be to

separate module with minimum possible interfaces/connections with scanner

module.

7.2 Scanner has to be designed to make it portable without any fixed foundation. It

should also have proper arrangement for alignment with respect to antenna to be

measured. Proper caster wheels for movement and Support Jack for firm support &

alignment has to be provided for Horizontal and Vertical Test setups. Added ‘dead

weights’ also to be considered and have to provide by vendor for stability of scanner

in setup conditions (particularly for Vertical Setup)

7.3 Scanner has to be designed for use in laboratory, which is clean room. Therefore it

should not act as a source of any kind of contamination like oil, dust etc. Dry

6.10 Tools and accessories Two sets of all tools required

for assembly, installation and

maintenance with proper

Tool Box

Standard/Special types of

fasteners used in scanner, in

adequate quantity (Minimum

10% of used)

For future requirements

of maintenance/repair at

SAC

6.11 Training for the

Scanner Vendor has to Provide

Detailed Training to SAC

Engineers (4-persons)

regarding all operational

aspects of Scanner including

used hardware and software

At SAC after installation

of Scanner.

6.12 Agreement/

Confirmation to other

clauses mentioned in

document

Please read carefully and go

through whole document. In

case of any doubt or

clarification, feel free to ask

SAC authority

In case of non-

conformance, please

mention specifically with

all details by attaching

separate pages with

quotation

6.13 For any

conditions/suggestion

from Vendor

Please mention clearly with

quotation


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lubrication is to be preferred where ever possible. In case liquid lubrication is

unavoidable, adequate measures must be implemented to seal it.

7.4 Conceptual sketch/snapshot is attached herewith only for understanding of the

requirements; Vendors are expected to come up with their own feasible

concepts. For more than one feasible options, vendor has to quote separately

and specifically for each with merits and demerits.

7.5 Vendor has to consider and design the scanner for the life of 10 years for satisfactory

operation considering duty cycle of the scanner on an average as 1000 hours/year

(approx.).

7.6 Major conceptual design should be presented by vendor in the quotation, which

should clearly specify how the laid down specifications of the system are achieved.

7.7 After receiving purchase order, vendor has to submit the Design Report with detailed

design calculations, CAD Models, fabrication and assembly drawings, Finite

Element Analysis (FEA) reports, technical specifications with supporting

documents/brochures for standard/bought out components/parts etc., for the design

reviews to be held at SAC, Ahmedabad and the vendor has to incorporate the

suggestions made by the review committee formed by SAC.

7.8 Vendor has to carry out all CAD Modeling, Structural Analysis, fabrication detail

drawings, and any other documentation in standard software/format that has to be

mentioned in their quotation.

7.9 Vendor has to discuss/submit their quality assurance plan before starting the

fabrication. Necessary comments of SAC engineers have to be incorporated in the

plan. Vendor also has to submit progress report as and when asked by SAC.

7.10 Vendor has to generate in-process dimensional reports for all the fabricated items.

Stage inspection and it will be reviewed by SAC Engineers for all critical activities.

7.11 Vendor has to consider the incorporation of the requirement of minor changes in

specification, if any, during the execution of contract, free of cost.

7.12 Vendor has to demonstrate and prove the performance as per the specifications

(Refer Section-5) including accuracy, through mock-up assembly at vendor’s site

after fabrication of the scanner. All necessary calibration tools, measuring

instruments should be arranged by vendor for performance evaluation.

7.13 Vendor has to work out installation requirements at location (i.e. SAC - Ahmedabad)

according to available resources and facility. For any other requirements (like Men,

machines, equipment, instruments, tools, logistics etc.), vendor has to arrange their

own resources. No extra charges will be paid for any of this arrangement.

7.14 Vendor has to deliver all deliverables in proper containers designed for frequent

transportation (Ref. Section 5.3) to prevent any type of handling and environmental

damage during transportation.

7.15 The Scanner has to be delivered to SAC by the vendor, which will be followed by

the installation. After installation of the scanner at SAC, vendor has to demonstrate


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performance as per the specifications given in Section-5 as per Test plan mentioned

in annexure-II.

7.16 Vendor has to submit all technical details of Scanner as well as bought out

components with its final design, assembly, operation, maintenance and

electrical/electronic circuit diagram manuals. Vendor also has to submit final

drawings/documents duly approved in all respects in soft as well as hardcopy (2-

Nos.) to SAC.

7.17 The scanner will be subjected to the specified Acceptance Test Plan (ATP) (see

Annexure-2). It will be accepted by SAC only after clearing ATP.

7.18 Vendor has to complete total work within 04-Months from the date of the

acceptance of confirmed purchase order. This total work has to be divided in the

following activities:

Design, Development, Analysis

Final Design and Fabrication drawings

Fabrication, assembly and performance demonstration at Vendor’s works

Packing and forwarding, installation and performance demonstration at SAC

Each activity will be reviewed by SAC Engineer/s and clearance will be given by

SAC to start next activity.

7.19 Vendor has to give assurance and warranty certificate/s for trouble free operation for

the minimum period of 1-Year after the certificate of satisfactory installation at SAC

(from SAC authority) for any defects in parts/components and/or workmanship.

Vendor has to solve the problem by Replacement and/or Repairing. For any of the

bought out items, vendor will be totally responsible for satisfactory operations for

the warranty period and has to arrange for any replacement/repairs. No extra

payment will be done for any of these activities.

7.20 Vendor has to quote separately for Extended Comprehensive Warranty for another

2-Years (after the completion period of basic warranty) covering all the aspect of

service at installation site (i.e. SAC) including all parts /components/service for

designed performance of the Scanner.

7.21 The frequent discussions at SAC as well as at vendor’s end will be required during

the realization of the scanner. Vendor has to arrange for visit at SAC for any such

activities, as and when needed. Vendor has to arrange for such visits on their own.

7.22 Vendor has to specify validity of the quotation which should be valid for minimum

120 days from the last date of submission of quotation.

7.23 Vendor has to provide details regarding available machines/qualified manpower and

infrastructure to carry out this job at their own work place. If is there any need for

any work, which requires off loading or sub-contracting to other parties, provide

details of available facilities at sub contractor’s work place.

7.24 Vendor has to mandatorily give point-to-point compliance statement with the

values/description as per Section-5. Whatever the specifications are not met,


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vendor should give the minimum specifications (values) met with justifications

for the same.

8 Deliverable Items 8.1 1-Axis Electronic Controlled Scanner Module (Section – 5.1)

8.2 Controller (Section – 5.1.1.5)

8.3 Support Structure for Horizontal Test setup (Section – 5.2)

8.4 Support structure for Vertical Test setup (Section – 5.2)

8.5 Containers (Section – 5.3)

8.6 Laptop with software and accessories (Section – 6.8)

8.7 Voltage stabilizer for power inputs to scanner and controller

8.8 All Power / Data Cables for connecting Scanner and Controller.

8.9 All Power / Data Cables for connecting Controller and Laptop

8.10 All required Electronic/Electrical Hardware.

8.11 All required software with media and manuals.

8.12 All Mechanical hardware,

8.13 Tools for operation and maintenance and accessories with tool kit.

8.14 Design Documents and manuals in Soft as well as Hard copy (2-Nos.)


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Annexure - 1

Fig-1: Sketch for Scanner configuration (for reference only)


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Annexure - 2

Fig: 2-a: Probe-1

Fig: 2-b: Probe-2


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Annexure - 3

Block diagram for Testing

Measurement Process:

1. Scanner hardware will carry a RF Probe Antenna which will be fed with RF Signal from

Payload Hardware. External computer will control payload hardware and scanner controller in

terms signal measurement and position information to scanner.

2. Scanner control hardware will be fed initial coordinates for movement of probe antenna from

External Computer.

3. After reaching to desired location scanner controller will provide feedback to external

computer.

4. Based on Feedback from Scanner Controller, External Computer will turn-on measurement by

commanding payload.

5. After measurement is done external computer will send control information to Scanner

controller for next measurement coordinates and process repeats from pt. 2.


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Annexure - 4

Acceptance Test plan:

Acceptance test will be carried out in two stages. All measurements will be carried out using

Laser Tracker or Equivalent measuring instrument. These tests will be carried out during

mock-up assembly at vendors’ site (Pre dispatch clearance) and will be repeated after

Installation at SAC.

Procedure will be repeated for Both Horizontal and Vertical test setups mounting scanner

module on respective structures

I. Positional Accuracy

Coordinate points will be taken at every 100 mm over the entire length of the scanner

axis keeping it in Horizontal and vertical Setup structures. It should conform for

linearity in order of 0.2 mm

II. Repeatability

Total 40 Number (or less) coordinate points will be measured along length of the

scanner axis keeping it in Horizontal and vertical Setup structures. It should conform

for receptivity in order of 0.15 mm

Points will be chosen randomly or sequentially.

Each coordinate point may be measured more than once.

The measurement may be through digital read out values.

The mean of the all measurements taken at a single random coordinate point is taken

as repeatability value of that coordinate point.