Optical Apparatus Driver Control via Power-Aware Mode Switching
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Solution Overview
Problem
Existing control methods for actuators in optical apparatuses, such as pulse width modulation and linear control, face challenges in power management, leading to noise interference and inadequate power supply for driving mechanisms, especially when the actuator's power consumption exceeds the available power from the image pickup apparatus.
Innovation Solution
A control apparatus that acquires information on the suppliable power and dynamically changes the control method of the driver to either pulse width modulation or linear control based on the available power, ensuring proper actuator driving while minimizing noise interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If pulse width modulation control method is used to drive the actuator, then power loss is reduced and power saving is achieved, but switching noises are generated that superimpose on the imaging signal
Solution Approach 1:
The control apparatus dynamically switches between pulse width modulation control and linear control methods based on the available power level. When power is sufficient, linear control is used to minimize noise; when power is limited, pulse width modulation control is used to conserve energy. This dynamic adaptation resolves the contradiction by allowing the system to optimize for different operating conditions.
2Object-generated harmful factors
If linear control method is used to drive the actuator, then switching noises are reduced, but power consumption increases and may exceed the suppliable power from the image pickup apparatus
Solution Approach 1:
The control method is dynamically adjusted based on the suppliable power level detected by the control apparatus. When sufficient power is available, linear control is employed to minimize switching noises. When power becomes limited, the system transitions to pulse width modulation control to reduce power consumption. This dynamic control strategy resolves the contradiction between noise reduction and power consumption.
3Object-generated harmful factors
If the actuator power consumption is increased to reduce noise, then imaging signal quality is improved, but the actuator cannot be properly driven when power exceeds the suppliable power from the image pickup apparatus
Solution Approach 1:
The control apparatus incorporates feedback regarding the suppliable power level from the image pickup apparatus. Based on this feedback, the control method is automatically adjusted to ensure that power consumption remains within available limits while minimizing noise interference. This feedback mechanism resolves the contradiction by preventing power consumption from exceeding supply capabilities.
Data Source
AI summary
A control apparatus is configured to control a driver configured to drive a driven member, which driver is provided in an optical apparatus that is attachable to and detachable from an image pickup apparatus. The control apparatus includes an information acquirer configured to acquire information on a suppliable power from the image pickup apparatus to the optical apparatus, and a changer configured to change a control method of the driver according to the information.