presentacion chasqui montana (1671)

First steps to establish a small satellite program in Peru

The CHASQUI-I project

CHASQUI Team http://www.chasqui.uni.edu.pe

IEEE Aerospace Conference

March 6 – 13, 2010 Big Sky, Montana - USA

Universidad Nacional de Ingeniería

Centro de Tecnologías de Información y Comunicaciones- CTICLima - Perú

PURPOSE AND MOTIVATION

The Chasqui TeamUniversidad Nacional de Ingeniería, Lima - Perú

The objective of the project development is primarily Educational: to educate Peruvian students in space technologies and space engineering

CHARACTERISTICS

• Dimensions: 100 x 100 x 100 mm• Tolerances: ±0.1 mm• Mass: 1 kg• Expected Orbit: Sun-synchronous

polar at altitude about 450-850 km (LEO)

• Expected Lifetime: 6 - 8 months• Payload: VGA camera and NIR

camera• Communications: UHF downlink/UHF

uplink

CHASQUI-I Engineering Model

Ing. Carlos Medina Ing. Enrique Sarmiento

SUBSYSTEMS

SIMA Camera

Imaging System

SDCA

Attitude Determination and Control System

CameraPCT

Power and Thermal Control

TCS

CameraSICOM

Communications System

ESTER

Ground Station

POWER BUSPOWER BUS

CONTROL BUSCONTROL BUS

Ing. José Oliden

Lic. Germán Comina Dr. Ing. Elizabeth VillotaIng. Daniel DiazIng. Roxana Morán

MSc. Lic. Fernando Huamán

Dr. Ing. Glen Rodriguez

MSc Ing Edwin Abregú.

Batería ION LITIO

Project Head: Hector Bedón / José Oliden

MGP

Project Management MSc. Lic. Edgard Vidalón

MCUMC9S08QE128

SPI I2C UART BDM

Input 3.3V

Memory FLASHSD BDM

connector

Clock 4MHz

EMEC

CAMERA BUSCAMERA BUS

CCMI

MIP

Integration and Testing

Mechanical Structure

Main Control and Information Management

SORAT

Orbits and Atmosphere Systems

MAIN CONTROL & INFORMATION MANAGEMENT (CCMI)

Tasks:• To define communication features with other modules.• To control functions among the subsystems.• To determine the operation modes and manage these modes.• To develop the Freescale main controller program.

MCUMC9S0

SPI I2C UART BDM

3.3V

Memories

FLASH

SecureDigital

Conector BDM

SCLK

MOSI

MISO

SS

MCU

MC9S08QE128

Objective: to manage and monitor information of all satellite subsystems

SATELLITE OPERATION MODES

POWER SYSTEM (PCT)

Objectives: to generate, manage and supply energy to the satellite subsystems; to send data to CCMI

SICOMSDCASIMA CCMI

3.3 V

data (current, voltage, temperature and battery state of

charge )

POWER SYSTEM

THERMAL SYSTEM

5.0 V

PCT

POWER SYSTEM (PCT)

Solar Panel

Battery Charging Circuit

MCU

Data Bus Power BusControl Bus

Voltage Regulator1

(3.3 V)

to CCMI and SICOM

Boost Converter1

(5.0 V)

to SDCA

Voltage Regulator2

(3.3 V)

Boost Converter2

(5.0 V)

Voltage sensor

Current sensor

Current sensor

Temperature Sensors

Heaters Control Circuit

Boost Converter3

(5.0 V)

Heaters

to CCMI and SICOM

Conditioner Circuit

BatteryTemperature Sensors

to CCMI and SICOM

to SIMA and SDCA

to SICOM and CCMI

from CCMI

PCT diagram

THERMAL CONTROL SYSTEM (PCT)

Passive Thermal Control:• Finite Element Method analysis• Aluminum 6061-T6 (Structure)• Kapton (Insulator)• Silicone (Insulator)

Active Thermal Control:• Heaters (Nichrome wire)

Objective: to maintain the temperature of all satellite subsystems within their operating ranges

Space Environment

COMMUNICATION SYSTEM (SICOM)

Characteristics:• Frequency band: UHF for satellite amateur communications (435-438 MHz)• Operation mode: Half duplex• Transmit power: 0.5 W• Modulation: FSK• Downlink Baudrate: 1200 bits/s• Uplink Baudrate: 1200 bits/s

Objective: to receive and decode the commands from ground station and, code and transmit data to ground station


Control Unit

Radio Unit

MSP430

CCMI

Dipole

~ 435-438MHz (TBD)

Modem/Transceiver

TNC RX

TNC TX

Switch

Mod. FSK

Demo. FSK

1200bps

AX.25

AX.25

Commands

Data

TNC

Uplink

Downlink

RF signal

RF signalAmplifier


SICOM diagram

GROUND STATION (ESTER)

Objective: to track the satellite, receive the satellite's data and send it commands

SoftwareTransceiver

Antennas

Computer

Serial R232

Cable (USB)

Amplifier

TNC (terminal node

controller)

Rotor (motor)

Parallel port

ARS

INTERNET

ESTER diagram

SYSTEM FOR IMAGE ACQUISITION (SIMA)

• OV7640 CMOS VGA640x480 Pixels• Automatic White Balance (AWB)•Automatic Gain Control (AGC)NIR Camera

Objective: to obtain Earth pictures from the CHASQUI-I .

Visible

NIRMultiplex Main Control

MemorySIMA

NIR Visible

ATTITUDE DETERMINATION & CONTROL SYSTEM (SDCA)

desired attitudedesired attitude

conditions after deploymentconditions after deployment/perturbation torques/perturbation torques

estimated estimated attitude attitude

actuation torquesactuation torques

Objective: to stabilize the satellite after its deployment and orient it for communication and Earth photographing.

SDCA Software: Attitude and Control Simulator developed in Simulink


•Initialization (Init)•DeTumbling (DT)•Data Acquisition only Magnetometer (DAM)•Data Acquisition All (DAA)•Data Estimation (DE)•Fail Safe (FS)•Power Safe (PS)•ORienting (OR)•PoinTing (PT)•Upside-Down Recovery (UDR)

InitInit

OffOff

FSFS

DTDT

OROR PTPT

UDRUDR

DAMDAM

DAADAA DEDE

CC

A*A*

BB

D*D*

GGFF

EE

H*H*

JJ

KKLL

II

MM

NNPSPS

PPOO

Definition of Operation Modes

Simulation Results for Stabilization


SDCA Hardware: Sensing and Actuation Buses

GPS: MN5010HSGPS: MN5010HS

MAGNETOMETER: MICROMAG3

GIROSCOPE: ADIS16265

SOLAR CELLSCURRENT SENSORS

SPISPI

UART

A/D PWM A/D

MAGNETIC COILS

DSC: MC56F8013

I2C

MCU: QE128

Objective: to provide protection to all electronic devices, subsystems and payload, and support the antennas.

MECHANICAL STRUCTURE (EMEC)

Virtual Model

• Material: Aluminum 6061-T6.• Thickness: 1.3 mm. • Welding process: TIG. • Analysis: Finite Element Method.

Mechanical Structure

Universidad Nacional de IngenieríaCentro de Tecnologías de Información y Comunicaciones - CTIC

1. PCB with solar sensor and gyroscope (SDCA)2. Solar Panel (PCT)3. Electromagnetic Coil (SDCA)4. Permanent Magnet (SDCA)5. PCB of Central Control (CCMI)6. PCB of Power and Thermal Control (PCT)7. PCB of determination and control of attitude (SDCA)8. PCB of communication (SICOM)9. PCB of image acquisition (SIMA)10.PCB of solar sensor (SDCA)11. Batteries package (PCT)12. Tightness Nut (MIP)13. Structure cover (EMEC & MIP)14. Satellite structure (EMEC & MIP)15. Subjection Bars (MIP)

Objective: to integrate the subsystems and perform environmental tests.

INTEGRATION AND TESTS (MIP)

ELECTRODYNAMIC SHAKER• Definition of components• Conceptual design• Revisions and modifications• Finite Element Method analysis.• Detail drawings

VACUUM CHAMBER • Design of vacuum chamber.• Design of dry ice vessel.• Fabrication of vacuum chamber.• Fabrication of dry ice vessel.• Air tightness test of vacuum chamber.• Dry ice temperature test.

INTEGRATION AND TESTS (MIP)

Equipment for testing is being designed and fabricated

BALLOON TEST

The Chasqui Teamhttp://www.chasqui.uni.edu.pe

Project Head: Hector Bedón / José oliden E-mail: [email protected] [email protected]

Module responsiblesCCMI: Eng. José Oliden Martínez PCT: M.Sc. Lic. Fernando Huamán PérezSIMA: Lic. Germán Comina BellidoSDCA: Dr. Eng. Elizabeth Villota Cerna SICOM: Eng.Daniel Diaz Ataucuri,

Eng. Roxana Morán Morales.EMEC: M.Sc. Eng. Edwin Abregú LeandroESTER: Dr. Eng. Glen Dario Rodriguez Rafael SORAT: M.Sc. Lic. Edgard Vidalón VidalónMIP: Eng. Enrique Sarmiento SarmientoMGA: Ing. Margarita Mondragón Hernández

AdvisorsEng. Carlos Fiestas SalazarEng. Rubén Acosta Jacinto Eng. Alejandro Ramón Vargas Patrón Eng. Milton Ríos JulcapomaM.Sc. Sergio Salas Arriarán Eng. Jorge David Taramona Perea M.Sc. Eng. Damián Sal y Rosas Celi Eng. Jaime Alberto Estela Gutiérrez Eng. Juan Martín Canales Romero

Fredy Arturo Calle Bustinza Jhosep Alan Valenzuela Matutti Piero Daniel Ardito Ynouye Manuel Alejandro Ignacio Yaranga Carlos Eduardo Negrón Montoya Jorge Llantoy Parra Elvis Omar Jara Alegría Segundo Gerardo Gamarra Quispe Pedro Aberga Farro Alldrin Uriol Alvino Jhosep Jim Guzman del Rio David Vega Diestra Raúl Montes Melgarejo Jack H. Dionisio Esteban Lic. Dane Cachi Eugenio Vanessa Gamero Sobero Diego Gomero Cruzatt Iván Christian Velásquez Aparco Dante Inga Narvaez Jesus Alberto Sánchez Pacheco Leonardo Solís Vásquez Henry Omar Huaroto Ochante

Antonino Espinoza Cárdenas Joan Manuel Calzado Canteño Lic. Fredy Miguel Loayza Cordero Miguel Chicchon Apaza Sammy Carbajal Ipenzas Klebes Arias Quispe Renato Miyagusuku Ríos John Rojas Paredes Celso Vilca Gavidia José Albites Sanabria José Alfredo Durand Cardenas Ántero Castro Nieto Carlos Delgado Ynga Jim West Montoya León Persing Junior Cardenas Vivanco Alvin Mostacero Natividad Rolando Wilder Adriano Peña Javier Quintana Esquivel Eduardo Diaz Escate Miguel Angel Alcántara Pinedo David Barreto Lara Federico Málaga Luyo Edgardo Toshiro Tabuchi Yagui Gustavo Quino Quispe Marco Pari Vega

The Chasqui Teamhttp://www.chasqui.uni.edu.pe

Researchers

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