INSTRUMENTATION • ELECTRONICS
NEW MOTOR
POSITION SENSING TECH M
agnetic-free dual-coil technology can provide high-resolution, precision and reliability for motor position
sensing used in robotics, industrial and medical devices. Taking this technology to new heights, Renesas Electronics Corporation has introduced an inductive position sensor (IP) technology for highly accurate motor position sensor ICs for such applications. Leveraging non-contact coil sensors, the position sensing technology can replace expensive magnetic and optical encoders often used in motor control systems that require absolute position sensing, high speed, accuracy and reliability. “Our induction position sensor
technology represents a significant leap forward in motor position sensors,” says Jan Leuckfeld, Senior Director of the HPC Analog Division at Renesas. “They will enable us to provide differentiated motor position sensor ICs for industrial applications that are robust, highly accurate and cost-effective.”
PROPRIETARY TECHNOLOGY The proprietary IPS technology from Renesas uses sensing elements
Induction position sensing technology
consisting of copper coils etched on a printed circuit board (PCB) to detect the position of a metallic target. Unlike heavy magnet-based sensors, the IPS products can operate at 600Krpm and detect the position right at startup, while the propagation delay is less than 2μs, making them ideal for motors with high rotational speeds. The sensing technology also supports auto-calibration and linearisation features to ensure consistent performance throughout a motor’s operational life.
RELIABILITY IN HARSH ENVIRONMENTS Based on the vernier principle, the dual-coil sensor technology supports a resolution of up to 19 bits and an accuracy of up to 14 bits. The robust sensor technology is capable of operating reliably in harsh environments where exposure to high temperatures, dust, moisture, vibration and electromagnetic interference (EMI) is common. Additionally, the induction sensors are immune to stray fields, require no maintenance, and are less susceptible to error than magnetic sensors. These advantages
make induction position sensors a more attractive option than conventional optical encoders or magnetic-based encoders, which tend to be heavier and costly. “Position sensors for factory floors must endure extreme conditions such as humidity, high temperatures and vibration,” adds Ulrich Marl, Key Account Manager at Renesas customer, Lenord+Bauer. “Through our collaboration with Renesas, we’ve integrated IPS-based technology into our encoder portfolio to ensure reliability and safety, while reducing downtime in critical applications.” The induction position sensor
technology will support commonly- used UART, ABI and I2C communications interfaces to ensure a seamless integration into industrial networks while facilitating real-time monitoring and data analysis. The technology will also be backed by a complete toolchain comprising dedicated software for user customisation and precision optimisation.
For more information visit
www.renesas.com
26
www.engineerlive.com
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52
