CONTROLLER FEATURES
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Duty cycle: 1% to 100%
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Frequency supported: 1 to 1100 Hz (higher frequencies are available)
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Digital voltage selection: 1, 2, 3, 4 and 5V (higher ranges are available)
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Protocol: I2C
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Selectable I2C addresses: 8
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High-Speed I2C Interface: 100kHz, 400kHz, 1.7MHz
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Onboard analog temperature sensor: LM50C, -55C to +125C
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Digital Input power supply: 5V@100mA
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Digital interface: Molex 53261-05
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MT01 power supply: 5V@1.2A
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MT01 interface: Molex 53261-03
DMT01: Ultra-High Precision Magnetorquer Controller
From € 2,500
The EXA DMT01 (Dynamic yield MagneTorquer controller) is a new kind of magnetorquer controller that enhances the classical PWM approach to manage magnetic-based ADCS actuators by allowing the user to dynamically change (up or down) the voltage and current being fed to the actuator via digital control (I2C). It can be used with or without PWM to control the integrated MT01 magnetorquer.
In the DMT01/SP (Standard Precision) version, the user can select dynamically the voltage levels as 1V, 2V, 3V, 4V and 5V.
In the DMT01/HP (High Precision) version, it's the same as above, but the user can also feed a PWM signal concurrently from 1 Hz to 1100 Hz and from 1% to 100% duty cycle, allowing the MT01 to achieve a precision pointing accuracy of up to 0.01 (10E-2) of a degree and theoretically could achieve up to 0.001 (10E-3) of a degree with the right sensors.
Availability: Immediately
Includes:
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Power cables
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Control/data cable
MT01 PERFORMANCE
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Working Voltage: From 1.25V to 5V
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Working Current: From 70mAh to 1100 mAh
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Nominal Magnetic moment: >0.558 Am2 @ 5V
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Saturation Magnetic moment: >0.790 Am² @9V
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Linearity: +/- 4% across operating design range
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Residual moment: <0.0005 Am2
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Torque: 5.36 µNm @ 7.2-3 mTesla (1U mass)
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Angular acceleration: 3.2-3 Rad/sec-2 (1U mass)
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B-center = 18.9 Gauss @3v3
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B-corners = 54.5 Gauss @3v3
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Supply Power: From 50mW to 1500mW
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Capacitance at 0V: 44.31 pF
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Inductance at 0V: 892.9 pH
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Thermal Performance:
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Operating Max temp @3.3V/0.66A 53.70 Centigrade
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Operating Max temp @4V/0.76A 68.90 Centigrade
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Operating Max temp @5V/0.90A 85.10 Centigrade
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Typical resistance: 4.1 to 4.7 ohms @ 25°C
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Random Vibration: 16g rms
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Lifetime: >10 years
PROPERTIES
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Dimensions: 62x55x4 mm
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Mass: 25 grams
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Max Operating voltage and current: 5V @ 1.2A
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Max Operating temperature range: -55 °C to +125 °C
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Radiation Tolerance: 12 years minimum in LEO
CONTROLLER SOFTWARE
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Programming language: C++
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Compatibility: Arduino UNO
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Parameters: Duty cycle, Frequency and Voltage channel on/off selection
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Functions: Safety disable of concurrent channels, initialization, test.
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Operability: Ground tests only, not for spaceflight
PROVIDER:
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