A control signal is the command output computed by a controller and applied to actuate or steer a system toward a desired state. In robotics and electromechanical contexts it is the voltage, current, or set-point delivered to an actuator; in generative pipelines it is the spatial conditioning input that guides synthesis. In both senses it is the carrier of intent between a decision process and the system it drives.
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- In electromechanical control the signal is conditioned, amplified, and converted into actuator force or motion, with bandwidth and noise determining achievable performance. The term generalises to any directive input that steers a process toward a target output.