18414294. DRIVE APPARATUS simplified abstract (TOYOTA JIDOSHA KABUSHIKI KAISHA)
Contents
DRIVE APPARATUS
Organization Name
TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor(s)
Tatsuya Nishino of Toyota-shi (JP)
Kazuki Minami of Toyota-shi (JP)
Junichiro Yasui of Seto-shi (JP)
DRIVE APPARATUS - A simplified explanation of the abstract
This abstract first appeared for US patent application 18414294 titled 'DRIVE APPARATUS
Simplified Explanation:
The patent application describes a drive apparatus that includes an electric motor with a rotor and stator, a gear connected to the rotor shaft, and a control device to manage the drive current in the stator core. The gear's design reduces vibration caused by torque ripple and meshing torque fluctuations in the motor.
- The drive apparatus consists of an electric motor, a gear, and a control device.
- The gear is connected to the rotor shaft and designed to minimize vibration.
- The control device regulates the drive current in the stator core to reduce gear vibration.
- The gear's teeth and torque ripple in the motor are synchronized to minimize vibration.
- Harmonic superposition control is used to reduce gear vibration when predetermined levels are exceeded.
Key Features and Innovation:
- Synchronization of gear teeth and torque ripple to reduce vibration.
- Harmonic superposition control for minimizing gear vibration.
- Control device managing drive current to reduce vibration.
- Gear design optimized to minimize torque ripple effects.
- Overall reduction of gear vibration for improved performance.
Potential Applications:
The technology can be applied in various industries such as automotive, robotics, industrial machinery, and more where precise control of motor vibrations is essential.
Problems Solved:
The technology addresses the issue of excessive gear vibration caused by torque ripple and meshing torque fluctuations in electric motors, leading to improved performance and efficiency.
Benefits:
- Enhanced performance and efficiency.
- Reduced gear vibration for smoother operation.
- Increased durability of drive components.
- Improved overall system reliability.
Commercial Applications:
Potential commercial applications include electric vehicles, automation systems, manufacturing equipment, and any machinery requiring precise control of motor vibrations for optimal performance.
Questions about Drive Apparatus:
1. How does the gear design help reduce vibration in the drive apparatus? 2. What are the specific industries that can benefit from this technology?
Frequently Updated Research:
Stay updated on the latest advancements in gear design and motor control technologies to further enhance the performance and efficiency of drive apparatus systems.
Original Abstract Submitted
A drive apparatus includes: (a) an electric motor including a rotor and a stator that has a stator core and a stator coil; (b) a gear connected to a shaft of the rotor; and (c) a control device configured to control a drive current flowing through the stator core. The gear has a number of teeth which makes an order of a fluctuation of a meshing torque generated in the gear coincide with an order of a torque ripple generated in the electric motor. When a magnitude of vibration of the gear caused by the torque ripple and the fluctuation of the meshing torque exceeds a predetermined determination value, the control device is configured to execute a harmonic superposition control for superposing a harmonic current on a fundamental wave of the drive current such that the magnitude of the vibration of the gear is reduced.
