DC Motor Controller supports software-based control loops.June 22, 2011 -
Powered by external 9-28 Vdc power supply, PhidgetMotorControl 1065 lets user control direction, velocity, and acceleration of one DC motor. Unit provides continuous motor current of 5 A, update rate of 42 updates/sec, and response time of 30 msec. Motor PWM frequency varies with motor speed. Operating from 0-70°C, controller includes over-current, over-voltage, and over-temperature protection to ensure board and motor are not damaged.
Original Press release
Phidgets, Inc.
2715 A 16A Street NW
Calgary, AB, T2M3R7
Canada
New DC Motor Controller Has Built Sensing to Support Software-Based Control Loops
Also provides over-current, over-voltage and over-temperature protection
CALGARY, Alberta, - Phidgets Inc. released today the 1065 - PhidgetMotorControl 1-Motor that lets you control the direction, velocity and acceleration of one DC Motor. The motor is powered by an external power supply (9 to 28VDC).
"Brushed DC Motors are very simple to understand, but very difficult to control precisely. By applying a voltage, or pulsing a voltage rapidly, at the terminals of the motor, current flows through the motor, and it will begin rotating. Depending on the direction of the current, the motor will rotate clockwise or counterclockwise. The 1065 changes the effective voltage by changing the percentage of time the full supply voltage is applied to the motor. By switching the voltage very quickly (a technique called PWM), the controller is made smaller, more efficient, and cheaper. " says Chester Fitchett, CEO of Phidgets.
"The 1065 also provides over-current, over-voltage, and over-temperature protection to insure that the board and motor is not damaged. " added Bernard Rousseau, Director of Marketing.
Product Specifications
Motor Controller
Output Controller Update Rate
42 Updates per second
Response Time
30 milliseconds
Velocity Resolution
±8-bit (~0.39%)
Velocity Range
±100%
Acceleration Resolution
8-bit (~0.39%)
Acceleration Range
24.52 - 6250 %/s2
Acceleration Time Range (-100% to +100% velocity)
32 - 8160 milliseconds
Braking Resolution
8-bit (~0.39%)
Braking Range
0 - 100%
Motor PWM Frequency
Varies with motor speed
Analog Input
Impedance
900K ohms
5V Reference Error
Max 0.5%
Update Rate
125 samples/second
Digital Inputs
Pull-Up Resistance
15K ohms
Low Voltage (True)
0.8V Max
High Voltage (False)
2.1V Min
Maximum Voltage
±15V
Update Rate
~125 samples/second
Recommended Wire Size
16 - 26 AWG
Wire Stripping
5-6mm strip
Encoder
Maximum Count Rate
500,000 Counts per second
Internal Output Pull-Up Resistance
2.4k Ohms
Software Update Rate (typical)
8 milliseconds
USB Update Rate
125 samples/second
Time Resolution
1/3 ms
Board
Minimum Power Supply Voltage
9 VDC
Maximum Power Supply Voltage
28 VDC
Continuous Motor Current
5 A
Motor Overcurrent Trigger
8 A
Power Supply Overvoltage Trigger
40 V
USB-Power Current Specification
100 mA max
Device Quiescent Current Consumption
20 mA
Operating Temperature
0 - 70°C
Software Environment
"Unlike a lot of our competitor's products that require their users to write some firmware code in order to use their sensor, we are completely "Plug and Play" says Bernard Rousseau, Director of Marketing. "With Phidgets, you plug it in and start using it and when it comes to programming, the user, not us, decides which operating system and which computer language he wants to use", added Rousseau.
Users can program Phidgets using a simple yet powerful and well documented Application Programming Interfade (API) that is supported under Windows (2000, XP, Vista), Windows CE, Mac OS X, and Linux. Users can write programs in Visual Basic, VB.NET, C#, C/C++, Flash/Flex, Java, Labview, Matlab, ActionScript 3.0, and Cocoa.
Phidgets also provides programming examples for all its products to help programmers write their own programs. The API Libraries as well as the examples and the documentation are available at no charge on Phidgets.com.
Pricing and Availability
The 1065 PhidgetMotorControl 1-Motor is available now. The suggested resale price is $77.65 Canadian.
About Phidgets
Phidgets, Inc. is a technology leader in the design and manufacture of low-cost control and sensing modules connected to personal computers through the USB port. Phidgets products are ideally suited for fast prototyping. The privately held company is based in Calgary, Alberta, Canada.
Sales Inquiries: sales@phidgets.com
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