MUMBAI, India, Aug. 10 -- Intellectual Property India has published a patent application (202641089546 A) filed by Vellore Institute Of Technology on July 22, 2026, for “a Coordinated Multi-Motor Speed And Direction Control Apparatus”.
Inventors include Dr. P. Ponnambalam; and Ms. Iqjas Fathima.
The application for the patent was published on July 31, 2026, under issue no. 31/2026.
Abstract: The present invention relates to a coordinated multi-motor speed and direction control apparatus and method using Serial Peripheral Interface (SPI) communication. The apparatus comprises a master microcontroller configured as an SPI master, a plurality of slave microcontrollers configured as SPI slave controllers, and a plurality of direct current (DC) motors respectively coupled to H-bridge power circuits. The master microcontroller receives an analog speed command through an analog-to- digital converter channel and generates a PWM duty-cycle value corresponding to the desired motor speed. External interrupt inputs are configured for selective activation of a target slave microcontroller and for selecting the direction of motor rotation. The master microcontroller transmits a command frame through a shared SPI bus including slave selection information, the PWM duty-cycle value, and a direction control bit. Each slave microcontroller decodes the received command frame and generates mutually exclusive PWM control signals for the corresponding H-bridge circuit to operate the associated DC motor in forward or reverse motoring mode. The apparatus further prevents simultaneous activation of opposite H-bridge conduction paths during direction reversal by selectively enabling and disabling PWM channels through PWM latch control registers. The disclosed system enables coordinated, scalable, and efficient multi-motor speed and direction control with reduced wiring complexity, improved synchronization, and reliable multi-quadrant DC motor operation suitable for industrial automation, robotics, conveyor systems, and embedded motor control applications. Fig 1 to 9.
Disclaimer: Curated by HT Syndication.
