Dave Wilson, Editor, writes:
We see from your search that you're looking for information on the term "Sensorless",
and we have a large number of manufacturers' news releases and technical articles here on Engineeringtalk which will be of interest.
Let me be your guide.
Start with
the news release Frequency inverters help reduce motor size needed from
Nord Gear, which we summarised at the time by saying "Nord Gear frequency inverters can allow low-cost AC motor equipment to be used in place of much more expensive motion controller and servomotor based automation".
Earlier in the week,
we featured the news release Colour scheme draws attention to drive range from
Parker Hannifin - SSD: "The new colours are being introduced on the latest versions of Parker SSD Drives' AC890 system drives, AC690+ AC vector drives, AC650 and 650V AC drives, DC590+ DC drives and DRV series DC drives".
In January 2008, we covered the news from Gefran SIEI UK
concerning its Lift/elevator control systems
- take a look at Control systems give a lift
which says: "Specialist 64 page catalogue presents a complete range of lift control systems and accessories suited to all types of lift installation, including new and retrofitted".
Take a look also at the news release from System Control Solutions, Micro drives can run without external control,
as well as Drive survives freezing temperatures from Lenze-ACTech,
and Inverter drives reduce motor control complexity from Lenze.
See also:
Variable speed drive offers near servo performance
(July 2007)
The SJ700 is a sensorless vector drive, with 150% torque at zero speed and near total immunity to motor constants problems
Inverter is a real all-round performer
(July 2007)
Frequency inverter with inbuilt EMI filter makes optimal torque and precise revolution control possible - even on high loads
Compact drives receive new features
(June 2007)
The CFW-08 drives integrate the latest DSP (digital signal processor) and 16bit space vector modulation for optimised motor control and quiet operation
Frequency inverter cuts cost and complexity
(June 2007)
Sensorless vector operation allows Lenze's SMV frequency inverter to provide fast dynamic torque response and low-speed operation
Agile gets patent for noise reduction in motors
(February 2007)
Agile Systems has been granted the first in a series of five patent applications for control of electric motor products by the US Patent and Trade Office (USPTO)
Sensorless drives released in two sizes
(January 2007)
Gefran UK has launched a new range of high-performance sensorless AC variable speed drives in two package sizes, covering 0.37kW to 2.2, that deliver full torque at standstill
Motion control papers are free to download
(November 2006)
Agile Systems has a library of White Papers covering published articles, technical papers and case studies that deal with a range of motion control related subjects
Vector controlled drives overcome challenges
(September 2006)
Many of the key challenges of vector controlled drives technology have been overcome by an intelligent sensorless development incorporated into the new Hitachi iSLV range
Servo amp runs in torque or velocity mode
(August 2006)
The Zircon digital servo amplifier is designed for brushed servomotors and voice coil motors
Why use encoders on no load brake hoists
(July 2006)
Why Sensorless Vector drives are being misapplied in the crane industry
Stepper driver boosts speed and torque quietly
(July 2006)
New and existing stepper motor applications will benefit from the Silentstep sensorless drive and control system developed by Agile Systems
Eval kits check out motion controllers
(June 2006)
Agile Systems offers evaluation kits to help customers determine performance and functional requirements for their motion control applications
Software puts drives in control of pumping
(June 2006)
Intelligent Pump Control (IPC) software eliminates the need for an external PLC and can help to save energy, reduce downtime and prevent pump jamming and pipeline blocking
Robots come with safety built in
(May 2006)
A new integrated safety system for articulated-arm robots protects the robots, the plant in which they work and the components they handle against damage and failure
Algorithm aids drive control
(April 2006)
Drive with a sensorless motor commutation system for brushless DC motors provides simplified control and improved performance when compared with servomotors with traditional Hall-effect feedback
Motion control firm makes debut at drives show
(April 2006)
Visitors to Drives and Controls 2006 from 16th to 18th May will see the launch of a breakthrough hybrid technology for stepper motor drives along with positioning systems and precision tables
Compact drives promise energy-efficient control
(December 2005)
Building on the success of its popular DF5 and DV5 families of inverter drives, Moeller Electric has launched two new models
Inverters promise increased torque
(November 2005)
Tml and Tmd inverters fit where a simple low cost drive is needed but with increased torque performance
Motors and diaphragms boost pump performance
(November 2005)
Hargraves Technology has achieved breakthrough advances in brushless DC motors and diaphragm elastomer materials
Pump maker signs exclusive drive deal
(September 2005)
Pump maker Armstrong Holden Brooke Pullen has signed an agreement with Danfoss for the exclusive worldwide supply of drives with sensorless control software for circulating pumps
Servo boosts torque with adaptive control
(July 2005)
The latest version of the Acopos servo drive supports the operation of all conventional motor types
Drives expand uses for open-loop speed control
(June 2005)
Rockwell Automation has extended the Allen-Bradley PowerFlex 700H power range to 500kW, and now offers the popular IP21 enclosure drive in two additional versions
Motor controller takes drive onboard
(April 2005)
The latest Allen-Bradley ArmorStart distributed motor controllers from Rockwell Automation now feature a built-in Allen-Bradley PowerFlex sensorless vector drive with DeviceNet connectivity
Continuous torque drive claims new standards
(April 2005)
The Telemecanique Altivar 71 continuous torque variable speed drive is claimed to set new standards for performance, ease of installation and use, safety and openness for integration
Motor drive harnesses matrix convertor technology
(March 2005)
Yaskawa Electric has won a global technology race and unveiled the world's first variable speed AC motor control to use matrix convertor technology
Drive boasts improved vector control
(November 2004)
The SJ200 series is the first drive to feature Hitachi's new iSLV (intelligent sensorless vector control) technology for dramatically improved performance
Multitalented inverter gains PLC functionality
(October 2004)
WEG's Vectrue CFW-09 inverter now offers users the cost saving benefits of PLC functionality - as well as selectable V/F, sensorless vector, closed loop vector and fieldbus operation
More power to IP66-rated drive family
(September 2004)
Rockwell Automation has increased the maximum power rating of the IP66 version of its PowerFlex 70 AC drive from 15 to 37kW
Adapters put microdrives online
(July 2004)
Allen-Bradley 22-COMM-E and 22-COMM-P adapters allow PowerFlex 40 drive users to have all the benefits of using a network running EtherNet/IP or Profibus
Variable speed control for high-power applications
(June 2004)
Rated from 132 to 250kW at 400 and 480V, the Allen-Bradley PowerFlex 700H AC drive meets OEM and end-user demands for precise, reliable and cost-effective motor control in high-power applications
Drive for logical applications
(May 2004)
Demand is increasing for intelligent variable speed drives that can perform basic logic functions - features provided by the Allen-Bradley PowerFlex 40 AC drive from Rockwell Automation
Enclosed drive tackles rugged environments
(April 2004)
The Jaguar TE is a new general-purpose AC inverter drive enclosed in an IP54-rated enclosure, making it ideal for use in environments where dust and water are a constant hazard
AC drives move up to higher powers
(March 2004)
The popular Allen-Bradley PowerFlex 700 range of AC drives has been extended to 690V, making it ideal for high-power applications requiring precise, reliable and cost effective motor control
Free tool simplifies inverter selection
(March 2004)
Moeller has published an easy-to-use inverter selection tool that will enable electrical designers and plant engineers to quickly resolve motor speed control applications