Exploring Independent and Mixed Modes in Dual Channel Speed Controllers for DC Motors

Posted by Makermotor on May 4th 2023


Dual channel speed controllers have gained popularity in recent years due to their ability to independently control two DC motors or combine their functionalities for enhanced performance. They offer various operating modes, each designed for specific applications. In this blog, we will focus on two main modes: mixed mode and independent mode. We will delve into their applications, advantages, and drawbacks to help you determine which mode is best suited for your projects involving DC motors.

Independent Mode

In independent mode, a dual channel speed controller operates both channels separately, allowing each motor to be controlled independently. This mode provides greater flexibility and precise control over each motor's speed, direction, and torque.

Applications of Independent Mode

  1. Robotics: Independent mode is highly valuable in robotics applications where precise control over each motor is essential. This can include robotic arms, mobile robots, or any other system where independent control of multiple motors is required for accurate movement and positioning.
  2. Automation Systems: In industrial automation systems, independent mode allows for the precise control of multiple conveyor belts, actuators, or other equipment that require individual motor control to ensure accurate operation and synchronization.

Mixed Mode

Mixed mode, also known as interleaved mode, refers to the method where the dual channel speed controller operates both motors in a complementary manner. This can involve synchronizing motor speeds, sharing the workload, or alternating motor operation to achieve specific goals.

Applications of Mixed Mode

  1. Differential Drive Systems: In mixed mode, a dual channel speed controller can be used to control a differential drive system, where two motors drive the wheels on either side of a vehicle, such as a rover. By controlling the speed of each motor relative to the other, mixed mode enables smooth turning and maneuvering, which is essential for efficient navigation and obstacle avoidance in rover applications.
  2. Load Sharing: In applications where two motors are responsible for driving a single load, mixed mode allows for efficient load sharing. By coordinating motor speeds and torque output, the dual channel speed controller ensures that the motors work together to distribute the load evenly, reducing the risk of motor failure or uneven wear.
  3. Redundancy: For critical systems where motor failure can lead to significant problems, mixed mode provides redundancy. If one motor fails, the other motor can compensate for the loss, allowing the system to continue functioning until repairs can be made.


The choice between independent mode and mixed mode in a dual channel speed controller for DC motors ultimately depends on the specific requirements of your application. Independent mode offers precise control over individual motors, making it ideal for robotics and automation systems. On the other hand, mixed mode excels in applications requiring coordination between motors, such as differential drive systems in rovers and load sharing. By understanding the advantages and drawbacks of each mode, you can make an informed decision and optimize the performance of your DC motor-driven systems.