Portescap in Motion

MotionCompassTM – Selecting the “right” motor for your application

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Jun 15, 2016

 

Are you an original equipment maker [OEM] looking for a specific motion control solution for your end application? Portescap caters to miniature motor requirements of a wide range of medical, diagnostic and industrial applications. This ranges from medical and surgical tools, lab automation equipment, dental drills and textile yarn guides to humanoid robots, surveillance camera systems, aircraft seat actuation, tattoo machines, and more. We help OEMs select the “right” miniature motor to power their applications. Our solutions include miniature dc and bldc motors, miniature can stack steppers and disc magnet motors as well as linear actuators with gear composite. These are usually customized to varying degrees, to suit requirements of the end application.

Since our motors are exposed to diverse operating conditions, selecting the right motor can be a daunting task. Certain applications need motors that can operate at extreme temperature ranges, whereas in some cases, OEMs are looking for motors with ability to withstand shocks and vibrations. Parameters like “length”, “diameter”, “torque”, “speed”,  “power density” etc  play an important role in motor selection. Thus, we’ve provided our clients and prospects with an online platform - MotionCompassTM, that helps them select the best-suited motor for their application.

 

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Understanding Speed-Torque Characteristics of Miniature DC Motors (Part 3 of 3)

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May 30, 2016

Read: Part I

          Part II

[continued...]

The thermal data given in our catalogue may be indicative, and it should always be confirmed whether the heat dissipation in a given application is actually better and stable. As per the speed-torque curve in Portescap’s catalogue, there is a temporary working range in which we can overload the motor for a small time span. However we should always confirm what that time span should be, and it all really depends on motor size and design. There is a definite time span for every motor size, and this limitation comes from the coil temperature and more precisely, how fast the motor coil or winding heats up.

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Understanding Speed-Torque Characteristics of Miniature DC Motors (Part 2 of 3)

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May 23, 2016

Read: Part I

[continued...]

Now we shall consider the motor speed against an application. We need a motor such that higher limit of its permissible speed should be higher than the operating point of the application. Maximum permissible limit corresponds to upper limit of operating range diagram. This speed limit can be found in our catalogue.

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Understanding Speed-Torque Characteristics of Miniature DC Motors (Part 1 of 3)

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May 17, 2016

Portescap offers miniature motor technologies to solve the motion needs of end markets. Our typical markets can range from motors for medical devices to various industrial applications. We serve our customers through innovative product technologies encompassing brushless miniature DC motors, brush DC & can stack motors, disc magnet motors and stepper linear actuators, to optimize their application performance.

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Miniature Disc Magnet Motors for Textile Applications

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Mar 14, 2016

 

In the 80’s, Portescap was mainly involved in the watch industry providing small stepper motors to be used in watches and clocks. We then designed the first micro motor using rare earth magnets with a multipolar structure. Such a design avoids additional pole shoes on the rotor to create fewer steps per revolution. Later, Portescap expanded its expertise to include bigger motors for industrial applications [< 100 W].

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Miniature Motors for Biopsy Systems and Radiation Treatment

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Feb 15, 2016

Miniature Motors for Biopsy Systems and Radiation Treatment

Precision electric motors are spinning the way to improved developments in cancer management.

“Oncology” is the field of study and treatment of tumors. Miniature electric motors are helping to improve the detection and treatment of cancer by advancing treatments in biopsy, imaging and radiation. As oncology techniques continue to become less invasive, more accurate and effective, the use of miniature electric motors by medical OEMs will remain a driving force in evolution of cancer management.

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Miniature Motors for Valve Actuation

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Jan 27, 2016

An expansion valve is a flow-restricting device present in a refrigeration system that causes a pressure drop of the working fluid. The valve needle remains open during steady-state of operation. The size of the opening or the position of the needle is related to pressure and temperature of the evaporator. When set and controlled properly, an expansion valve will keep the evaporator active throughout its operation.  There are two types of electric expansion valve technologies popular in the market place - pulse width modulated valves, and stepper motor driven valves.

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Miniature Motors for Medical Devices and Dispensing Systems

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Jan 11, 2016

 

Health care safety is now a top priority and concern among health care practitioners and consumers. In today’s medical devices marketplace, the demand for reliable and safe medical devices and equipment comes not only from the clinical end user, but also from informed patient consumers.

For those involved in the development and manufacture of medical devices and equipment, the demand for safety and quality brings with it new and exciting challenges. How does one build equipment and devices that meet the hundreds of stringent needs of the clinical end user and health care consumer? How does one decide with whom to partner in this far-reaching world of device and equipment manufacturing?

Care givers constantly need products that assist them in achieving the best possible clinical outcomes for their patients. Where do we get motion control solutions, i.e. motors for medical OEMs capable of navigating the demands of the health care industry?

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Portescap Introduces New P532 Motor Series for Best-in-class Power Rate and Acceleration

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Dec 21, 2015

Portescap has recently introduced the P532 Series Disc Magnet Step Motor with encoder to deliver best-in-class motor acceleration and power rate and thus outperform the standard Brushless DC motor in a wide range of applications.

Stepper motors typically run at 2,000 RPM or less in an open loop, while brushless motors that can run at much higher speeds are typically used in closed loop applications. In the last few years, trend is to use a stepper motor in closed loop with a torque higher than a brushless motor system, because of its higher pole count. What we are typically looking at is the middle range of revolutions per minute [RPM] as a sweet spot for disc magnet motors. The sweet spot opens up in applications in the few thousand RPM range, where a closed loop disc magnet motor system can be more cost-effective than a brushless solution.

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Miniature Motors for Medical Ventilation

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Nov 25, 2015

 

The medical sector today mandates mechanical ventilation in cases where a patient's spontaneous ventilation is inadequate to maintain life. This is done to prevent an imminent collapse of other physiological functions, or ineffective gas exchange in the lungs. Mechanical ventilation therapies in hospitals and in the field have contributed to dramatic improvement in life expectancy of patients during and after surgeries, or patients suffering from accidental disruption of lungs, or even patients suffering from acute chronic pulmonary diseases. More recently, home care applications previously considered as luxury or comfort therapies are showing an interest in race to extend people’s life. For instance, low end mechanical ventilators devices known as CPAP are used at night to treat sleep apnea, a disorder once considered to be a simple discomfort and which is now recognized as a source of major medical complications such as increased blood pressure, diabetes, etc.

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