Motion System Selection Considerations for Wheeled Robots
As robots become an integral part of our lives in both industry and in our homes, wheeled robots will be at the forefront of the progression. Their motion systems usually consist of brushed or brushless DC motors coupled with compact planetary gearboxes. When selecting a motor and gearbox, you will need to determine both the product’s operating and maximum conditions and confirm the required speed and torque experienced at the wheel output. Here are some tips to consider to help with your selections:
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Topics:
miniature motors,
Portescap,
motion system,
brushless DC motor,
BlDC motor,
motor selection,
motor torque,
motor speed,
high torque density,
motor and gearbox,
planetary gearbox,
coreless motors,
compact motors,
long life motors,
wheeled robots,
brushed DC motor
Understand the Effect of PWM When Controlling a Brushless DC Motor
Designers of motion systems often face challenges when selecting or developing electronics using pulse width modulation (PWM) to drive brushless DC motors. To avoid unexpected performance issues, it’s important to understand some of the basic concepts.
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Topics:
PWM drive,
pulse width modulation,
Portescap,
brushless DC motor,
DC motors,
PWM regulations,
PWM method,
PWM frequency,
chopper amplifiers,
ripple,
joules losses,
iron losses,
Faraday-Lenz law of induction,
linear amplifiers,
eddy currents
Choosing a Motor for Electronic Pipettes
When it comes to dispensing a specific volume of liquid in a lab environment, pipettes are essential. Electronic air displacement pipettes have taken the lead due to the needfor a high level of precision and accuracy required for repeated use over a periodof time. With the improvement of a digital interface for adjusting aspiration or dispensing, electronic pipettes offer a huge advantage and relief from ergonomic methods.
The motor is the key element in the design. When design engineers specify a motor they must consider factors such as motor power, size and weight, and control electronics. Let’s look at the two most considered motor options - stepper motors and DC motors to help determine the fit for your application.
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Topics:
miniature motors,
Stepper Motors,
Brush DC Motors,
Portescap,
brushless DC motor,
pipettes,
laboratories,
accuracy,
precision,
automated systems
Sterilizable Encoders and BLDC Motors Drive Surgical Hand Tool Advances
As handheld surgical tools gain wider adoption, there’s a growing demand for smaller, lightweight devices that can offer more capability and precise motion profiles. When it comes to brushless DC motors (BLDC) commonly used in handheld surgical tools, magnetic encoders provide the high-resolution feedback that makes high-performance drive systems possible, and they offer many benefits. However, not all encoder/feedback technologies are the same. Here are some situations that call for an encoder as part of a drive system:
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Topics:
BLDC Motors,
Encoders,
feedback sensors,
motion system,
brushless DC motor,
angular position control,
torque control,
integrated BLDC motor and encoder,
surgical hand tools,
magnetic encoders,
motor feedback,
high resolution feedback,
motor position,
velocity control,
motor control,
motion control
