Toyota jidosha kabushiki kaisha (20240243687). DRIVE APPARATUS simplified abstract
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 20240243687 titled 'DRIVE APPARATUS
Simplified Explanation:
This 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 teeth are designed to align the fluctuation of the meshing torque with the torque ripple in the motor. When the gear vibration exceeds a set value, the control device implements harmonic superposition control to reduce the gear's vibration.
- The drive apparatus consists of an electric motor, a gear, and a control device.
- The gear's teeth are strategically designed to align torque fluctuations with the motor's torque ripple.
- The control device intervenes when gear vibration surpasses a predetermined threshold, implementing harmonic superposition control to minimize vibration.
Key Features and Innovation:
- Electric motor with rotor and stator
- Gear connected to rotor shaft
- Control device for managing drive current
- Gear teeth designed to align torque fluctuations
- Harmonic superposition control to reduce gear vibration
Potential Applications:
- Industrial machinery
- Automotive systems
- Robotics
- Aerospace technology
Problems Solved:
- Minimizing gear vibration
- Enhancing motor efficiency
- Improving overall system performance
Benefits:
- Reduced gear vibration
- Enhanced system stability
- Increased operational efficiency
Commercial Applications:
The technology can be utilized in various industries such as manufacturing, automotive, robotics, and aerospace for improving system performance and reducing maintenance costs.
Questions about Drive Apparatus:
1. How does the gear's design help reduce vibration in the drive apparatus? 2. What are the potential applications of this technology in the automotive industry?
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.
