August, 2018
www.us-tech.com
H2W Technologies Intros High-Torque Rotary Voice Coil Actuators
Santa Clarita, CA — H2W Technol - ogies has developed several high- torque rotary voice coil actuators, also known as limited-angle torque (LAT) motors. The model TWR-015-346-2RC was designed to allow for a low mov- ing mass and inertia, as well as dual- independent coils to allow for two independent motion profiles or couple the coils together to double the torque output.
This rotary voice coil actuator
can generate a continuous torque of 185 oz-in. (1.29 N-m) and a peak torque of 555 oz-in. (3.9 N-m) at a duty cycle of 10 percent, e.g. one sec- ond on and nine seconds off, in each coil on a 4 in. (10.2 cm) rotation arm. By coupling the coils together, the continuous torque doubles to 370 oz- in. (2.58 N-m) with a peak torque of 1,110 oz-in. (7.75 N-m) at a 10 per- cent duty cycle. The TWR-015-346-2RC has a
total angular displacement of 15° and a motor constant of 34.4 oz-in./sqrt(W) [0.24 N-m/sqrt(W)] per coil. When cou- pled together the motor constant is 48.5 ox-in./sqrt(W) [0.34 N-m/sqrt(W)]. The voice coil motor requires 1.33A of continuous current per coil and 4A of peak current per coil to generate the
Nippon Pulse America Now Certified to ISO 2015
Radford, VA — Nippon Pulse America Inc. (NPA) has recently received upgraded international standards certificates for its com- bined quality management and envi- ronmental management systems. NPA’s business management system (BMS) encompasses both the quality and environmental policies, and com- plies with all requirements for recer- tification to ISO 9001:2015 and 14001:2015. BSI America previously certi-
fied NPA to the ISO 9001:2008 and 14001:2004 standards, and the organization has certified that the BMS complies with all updated requirements. NPA’s Virginia facility is a sales-
based office, and has worked toward recertification to prove its commit- ment to providing customers with high-quality service and support, and reducing its environmental impact. Many of the company’s products are manufactured at Nippon Pulse facili- ties in Japan and China, which are also certified to ISO 9001:2015 and 14001: 2015 standards. Nippon Pulse America, Inc., is an
American subsidiary of Tokyo-based Nippon Pulse Motor Co., Ltd. Nippon Pulse is a global manufacturer and tier 1 supplier of precision motion con- trol products for original equipment manufacturers. It provides a wide array of motion control solutions, including stepper motors, linear shaft
motors, controllers, and drivers. Contact: Nippon Pulse America,
Inc., 4 Corporate Drive, Radford, VA 24141 % 540-633-1677 E-mail:
info@nipponpulse.com Web:
www.nipponpulse.com
@
www.spea.com
specified forces. The actuator fits in an envelope of 4.4 x 3 x 1.6 in. (11.1 x 7.6 x 4.2 cm). The moving coil design ensures
hysteresis-free movement, as the coil is wet-wound and self-supported. The non-commutated coil allows for ripple-free motion and no cogging. The voice coil actuator has been designed with mounting provisions in the magnet and coil assemblies. This allows for integration of a
bearing system to maintain the clearances between the coil and per-
TWR-015- 346-2RC high-torque rotary voice coil actuator.
manent magnetic field assemblies. The rotary voice coil actuator is suit- able for applications that require high torque and high speed, such as driving a gimbal axis in scanning applications, as well as providing stabilizing torques for image stabi- lization.
Contact: H2W Technologies,
Inc., 26380 Ferry Court, Santa Clarita, CA 91350 % 888-702-0540 fax: 661-251-2067 E-mail:
info@h2wtech.com Web:
www.h2wtech.com
Page 71
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