JTEKT’s patented motor drive system features redundant control calculation units and motor drive units in first and second actuators. In case of failure in any system or communication between actuators, the normal system takes over motor drive control. This innovative design ensures continuous operation and reliability. GlobalData’s report on JTEKT gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on JTEKT, Crankshaft ball bearings was a key innovation area identified from patents. JTEKT's grant share as of April 2024 was 48%. Grant share is based on the ratio of number of grants to total number of patents.
Redundant motor drive system for actuator control
A recently granted patent (Publication Number: US11973453B2) discloses a motor drive system designed to enhance reliability and safety in various applications, particularly in vehicles. The system comprises two actuators functioning as motors that output torque, each equipped with redundant control calculation units and motor drive units. In the event of a failure in any system within the actuators or in the communication between them, the control calculation units in the affected system halt motor drive control while the normal system continues operation. Additionally, the system allows for communication between paired control calculation units in different actuators to ensure seamless operation and fault detection.
Furthermore, the patent details the application of the motor drive system in steering systems for vehicles with independently turning wheels, such as steer-by-wire systems and vehicles with four independently turning wheels. The system's design includes provisions for supplementing the output of a normal system to compensate for a failure in the corresponding system, thereby maintaining functionality and safety. The patent also highlights the use of redundant control calculation units with processors and memory to detect failures and ensure continuous motor drive control in normal systems across all actuators, emphasizing the system's robustness and reliability in critical applications.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
