Robotics
The technological growth in the robotics field, including humanoid robots, has been remarkable in recent years, with advancements in motors and actuators, which are key to drive and control technologies.
JMAG offers a wide variety of small motors including BLDC, coreless motors, servo motors, and even linear motors that are ready for evaluation. The high-speed, high-precision electromagnetic field analysis technology developed by JMAG can also accurately capture cogging torque, which is a problem in the smooth movement of robot joints
Furthermore, JMAG’s optimization technology easily identifies the appropriate motor to meet required power within limited space across various motor types. Additionally, by linking with thermal, structural, and control models, it allows for simultaneous evaluation of factors like the temperature, vibration, and noise of drive components, enabling evaluations tailored to the diverse requirements of different robot applications.
Case study
Motor Drive Verification Using HILS Implemented with JMAG-RT Models
In this presentation, the effectiveness of HILS incorporating JMAG-RT is explained using case studies that demonstrate the operational verification of the sensorless servo’s initial magnetic pole detection feature and open phase detection feature.
Optimal Design of Instantaneous High-output Motor for Basketball Robots
As the humanoid basketball robot requires very high output at the moment of throwing, an instantaneous high output is also required for its motor. This presentation introduced a case study on the development of a compact, lightweight, and high-instantaneous-output motor, achieved through the use of optimization.
Analysis of Multi-Degree-of-Freedom Spherical Actuators in JMAG
To apply a multi-degree-of-freedom spherical actuator to a micro-task robot that requires positioning accuracy of less than 1mm, analyses were conducted using JMAG to evaluate output torque and positioning accuracy.
Optimization of Solenoid Attraction using JMAG Optimization Function
The optimization function is applied to efficiently design magnetic circuits for pneumatic solenoid valves, which are required to save power and be compact. An optimization example that achieved an improvement in attractive force by considering magnetomotive force and magnetic path area has been introduced.
Low Oscillation Actuator for Force-controlled Medical Robot Arm
JMAG is being used to develop actuators that drive smoothly with low vibration, as required for force-controlled medical robot arms. In addition to evaluating individual motor characteristics, natural frequency analysis including the motor case, and evaluating the impact to excitation force considering control through MATLAB/Simulink co-simulation has been introduced.
Analysis of responsiveness of air pressure solenoid valves using JMAG-Designer
In this presentation, the use of JMAG to estimate the switching responsiveness of small pneumatic valve spools has been introduced. Transient response analysis was used to calculate changes in current values generated in the solenoid valve coil, and these were compared with measured results.
Large scale 3D electromagnetic field analysis for electric machine design
To eliminate rework in the development of servo motors and linear servo motors, they have incorporated 3D analysis that captures the magnetic circuit in three dimensions and provides a detailed understanding of motor characteristics.They have reported on their efforts to reduce analysis time using parallel computation.
Development of Cylindrical Linear Motor for Lift-Motion
A case study on the analysis of an inductor-type cylindrical linear motor developed for lift motion applications has been introduced. To generate large continuous thrust with a small movable part, the relationship between the mover structure and thrust characteristics, and the maximization of thrust, were investigated through magnetic field analysis.
Developing Motor Drive Systems Using JMAG-RT
In the development of drive systems for new motors, JMAG-RT and HILS can be used to improve quality and shorten development time by linking motor design and control development from the early development stage. This report introduces this approach.
![[JAC043] Torque Analysis of a Coreless Motor](/wp-content/uploads/catalog/jac043-150x150.png)
![[JAC089] Stiffness Torque Analysis of a PM Stepper Motor](/wp-content/uploads/catalog/jac089-150x150.png)
![[JAC016] Analysis of a Hybrid Stepper Motor](/wp-content/uploads/catalog/jac016-150x150.png)
![[JAC054] Analysis of the Cogging Force of a Moving Coil Linear Motor](/wp-content/uploads/catalog/jac054-150x150.png)
![[JAC102] Magnetic Field Analysis of a Magnetic Sensor](/wp-content/uploads/catalog/jac102-150x150.png)
![[JAC242] Solenoid Valve Attractive Force Analysis Taking into Account Movable Part Motion](/wp-content/uploads/catalog/jac242-150x150.png)
![[JAC252] Geometry Optimization of a Solenoid Valve](/wp-content/uploads/catalog/jac252-150x150.png)
![[JAC207] Transfer Torque and Efficiency Analysis of Magnetic Gear](/wp-content/uploads/catalog/jac207-150x150.png)