Portescap in Motion

Choosing a Motor for Electronic Pipettes

Posted by Valentin Raschke   Oct 12, 2021   0 Comments

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

Reducing Surgical Hand Tool Size Without Sacrificing Performance

Posted by William Huang   Oct 07, 2021   0 Comments

Reducing Surgical Hand Tool Size Without Sacrificing Performance

For the surgical hand tool designer looking to deliver all of the performance objectives in the most sleek and lightweight package possible, the choice of electric motor is a key consideration.

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Topics: miniature motors, Surgical Motor Solutions, BLDC Motors, Brushless DC motors, surgical hand tool design, precision manufacturing, surgical instruments, hand tool manufacturing

Brushless DC Motion Solutions for Medical Disposable Tools

Posted by Sunil Kumar   Oct 04, 2021   0 Comments

Disposable Medical Tools for Minimally Invasive Surgeries: Selecting the Optimum BLDC Motion Solution

 

Minimally invasive surgery refers to any surgical procedure that is performed through tiny incisions instead of a large opening in the body. Portescap’s focus over the past few years has been to design and develop innovative motion solutions for minimally invasive medical tools for treating various diseases.

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Topics: Medical

Mini Motors for Drone Applications

Posted by Vishal Sapale   Oct 01, 2021   0 Comments

Motors for Drone Applications

Unmanned Aerial Vehicles (UAVs) or drones, as they are generally known, are becoming more common. This technology is adding value in many markets including aerospace and defense, agriculture, surveillance and even e-commerce.

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Topics: Aerospace & Defense

Commutated Resistance Change of DC Motors

Posted by Bill Burton   Sep 30, 2021   0 Comments

Commutated Resistance Change of Portescap Brush DC Motors

 

For a one brush pair Portescap DC motor, the catalog value for resistance is specified assuming that all coils are active (that is, no coil is short circuited by the brush, which would occur if the brush were simultaneously touching two commutator segments).

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Topics: Coreless brush DC motor

Sterilizable Encoders and BLDC Motors Drive Surgical Hand Tool Advances

Posted by Andrew Sharp   Sep 28, 2021   0 Comments

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

Controlling Brushed DC Motors with Pulsed-width Modulation (PWM)

Posted by Sunil Kedia   Sep 23, 2021   0 Comments

Controlling Brushed DC Motors with Pulsed-width Modulation (PWM)

The enduring popularity of coreless brushed DC motors comes from a combination of their simplicity of design, fast transient responses, negligible iron losses and ease of control. With speed proportional to applied voltage, the motor can be simply driven using a continuous linear regulation power supply. But is this always the best solution?

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Topics: pulse width modulation, PMW, motor performance, Coreless brush DC motor

Improve Your Solar Panel Cleaning Robot TCO with DC Coreless Motors & Gearheads

Posted by Portescap   Sep 17, 2021   0 Comments

 DC Coreless Motors Reduce TCO and Weight of Solar Panel Cleaning Robots

Solar panels are growing in popularity as effective choices for large solar farms generating renewable energy. They do require regular maintenance and cleaning to ensure efficient use and long life. Currently solar power cleaning units (SPCRs) use large, heavy DC motors that weigh upwards of 1kg+ that make these robots cumbersome, inefficient and difficult to maintain.

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Topics: Motors for wheels, Motors for cleaning axis, Motors for brush

Experimental Approach For Solving Side Band Noise of Miniature Planetary Gearbox

Posted by Pradeep Deshmane   Sep 16, 2021   0 Comments

Experimental Approach For Solving Side Band Noise of Miniature Planetary Gearbox

Vibration and noise spectra from miniature planetary transmissions commonly exhibit components at distinct frequencies around the gear mesh (tooth passing) frequency and its higher harmonics, called modulation sidebands. They constitute a significant portion of the vibration and noise generated by the transmission. Sidebands have influence on noise quality measures as well as having great potential to provide valuable clues regarding gear tooth combinations, phasing of planets, manufacturing errors like eccentricity, run out present in the gear set, planet pin position error, etc.

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Topics: gearhead, side band noise

Delivering the Ultimate Motor for Craniotomy Hand Tools

Posted by Portescap   Sep 13, 2021   0 Comments

Delivering the Ultimate Motor for Craniotomy Hand Tools 

Craniotomy hand tools are high speed drills used in neuro (skull) surgeries. These complex procedures require the ultimate in accuracy, precision and balancing. Even minor vibrations or jerks could impact the outcome of surgeries.

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Topics: motor for craniotomy hand tools, motors for surgical hand tools, craniotomy drill motors

Bipolar Drives and Unipolar Drives for Stepper Motors: A Comparison

Posted by Clemence Muron   Sep 09, 2021   0 Comments

Bipolar Drives and Unipolar Drives for Stepper Motors: A Comparison

 A stepper motor is a type of brushless DC motor composed of connected coils — called “phases.” These electromechanical devices are generally driven in open loop without a feedback sensor, with current applied on the phases without knowing the rotor position. The rotor moves into alignment by means of the stator’s magnetic flux, generated by the current flowing in the phases. At each pulse, the current can be supplied to the next phase, allowing incremental rotational movements, or steps. There are two methods to supply current in the coil: bipolar and unipolar. This blog post will compare bipolar and unipolar motors.

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Topics: Stepper Motors

Encoders Provide Motor Speed and Position Control

Posted by Chris Schaefer   Aug 31, 2021   0 Comments

How Encoders Provide Motor Speed and Position Control 

In many mechanical systems, precise motion hinges upon effective monitoring and control of the motor. Encoders make motion control possible by sensing the motor’s speed and position and sending feedback signals to control components. Two square waves, or channels, shifted 90 electrical degrees from each other, along with an optional index pulse that occurs once per revolution, encode the angular position data. 

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Topics: Motor Application Tips, Encoders, motor performance

Stepper Motors for Medical Applications

Posted by Krishna Kumar   Aug 27, 2021   0 Comments

Stepper Motors Provide the Dynamic Performance Your Medical Application Requires

A stepper motor is an electromechanical device that converts electrical pulses into discrete mechanical movements and therefore can be operated directly from a pulse train generator or a microprocessor. Stepper motors can work in an open loop, the controller used to drive the motor can keep track of the number of steps executed and knows the mechanical position of the shaft. Stepper geared motor have very fine resolutions (< 0.1 degrees) allowing precise metering for pump applications and maintain a position without current because of their inherent detent torque. Excellent dynamic characteristics allow quick starts and stops.

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Topics: Medical

Engage Early with Motor Suppliers to Drive the Right Strategic Decisions

Posted by Portescap   Aug 26, 2021   0 Comments

Engage Early with Motor Suppliers for Strategic Decisions that Meet Timelines and Enhance Product Performance

Medical device companies are under extreme pressure to deliver new or improved products ahead of the competition. Engaging with specialist suppliers at the very earliest stages of product design can help medical OEMs maintain a competitive edge.

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Topics: Custom motors, mini motor

Running DMM Motors in BLDC Mode

Posted by Portescap   Aug 12, 2021   0 Comments

Did you know: Stepper Disc Magnet Motor Technology Provides Multiple Modes of Operation

Designed and developed in Switzerland, Portescap's Disc Magnet Stepper Motor provide versatility unequaled by any other kind of permanent magnet stepper motor. 

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Topics: Stepper Motors, Disc Magnet

Selecting the Optimum Flat Motor Technologies For Your Application

Posted by Sunil Kumar   Jul 15, 2021   0 Comments

Selecting the Optimum Flat Motor Technologies For Your Application

Many applications today have critical space constraints and require flat motor solutions. However it is not always obvious what technology would work best in this type of situation while still being able to meet performance requirements. Typically, the speed-torque criteria can help provide a guide on what technology may be optimal for the given application. Let’s explore the various technologies available for flat motors depending on design requirements.

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Topics: miniature motors, Brush DC Motors, BLDC Motors

Motor Selection Tips: Understanding Thermal Parameters of DC Motors

Posted by Manoj Pujari   Jul 08, 2021   0 Comments

Motor Selection Tips: Understanding Thermal Parameters of DC Coreless Motors
With the help of simple thermal modeling

When trying to understand the phenomenon of heating of coreless dc motors, its helpful to express it as a simple thermal model and to draw an analogy with an electrical system. Looking at Fig. 1, you can see the power dissipated (heat) is the difference between electrical input power and the mechanical power (speed & torque) generated by motor shaft. With this basic understanding , let’s next examine the thermal model of a DC coreless motor.

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Topics: Motor Application Tips, Brush DC Motors

Podiatry Done Right: Ironless Brushless DC Motors for Foot Care Devices

Posted by Valentin Raschke   Jul 01, 2021   0 Comments

Podiatry Done Right: Ironless Brushless DC Motors for Foot Care Devices

With summertime just around the corner and podiatry studios slowly reopening after the COVID-19 shutdown, taking good care of one's feet is becoming more relevant than ever. To be able to offer a professional treatment a podologist depends on a reliable and well-performing podiatry device. The motor situated in the handpiece of such a device is a critical component, which will strongly influence whether the device simply performs its job or if the same task can be achieved with outstanding user-friendliness and customer satisfaction.

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Topics: Medical

Why Use an Electromagnetic Brake with Your Electric DC Motor?

Posted by Louis Mongin   Jun 22, 2021   0 Comments

Why Use an Electromagnetic Brake with Your Electric DC Motor?

Electromagnetic brakes are used in industrial and medical equipment to consistently hold a load in position at a specific stopping point. The brake hollow shaft is mounted on an electric motor shaft for a compact integration.

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Topics: Others, Motor Application Tips, Robotics

Portescap Motor Technology in Healthcare Simulators

Posted by Chris Schaefer   Jun 15, 2021   0 Comments

Portescap Motor Technology in Healthcare Simulators

Healthcare simulators are sophisticated training tools for medical professionals that resemble actual patients exhibiting various medical conditions.

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Topics: Custom motors, Medical, Stepper Motors