Bed Actuator Speed Control Based on Extension Position Feedback

Solution Overview

Problem

Existing bed devices lack adequate control mechanisms to efficiently manage the height and posture of bed frames, leading to suboptimal user comfort and safety.

Innovation Solution

A control device with a controller that adjusts the speed of extension/contraction of actuators based on predetermined relation information, ensuring consistent and controlled motion of bed frame components.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the bed frame height is made variable to improve user comfort, then ease of operation is improved, but control precision deteriorates due to lack of adequate control mechanisms

Engineering Contradiction:

Improvebed height adjustmentVSAvoidcontrol precision

Core Design Contradiction:

Ease of operationVSManufacturing precision

Solution Approach 1:

The patent applies dynamics by making the actuator speed variable rather than constant. The controller dynamically adjusts the extension/contraction speed of the actuator based on its current position, ensuring precise control at different heights while maintaining ease of operation. This resolves the contradiction by enabling both comfortable height adjustment and precise control through adaptive speed management.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent implements feedback control by using detection means to monitor the actuator's extension/contraction amount and using this information to control the motor's driving force. This closed-loop feedback system ensures precise control of bed frame height while maintaining ease of operation, directly resolving the technical contradiction between operational ease and control precision.

Inventive Principle:

Principle #23Feedback

2Productivity

If the actuator extends/contracts quickly to improve productivity, then speed is improved, but reliability deteriorates due to potential sudden changes and safety issues

Engineering Contradiction:

Improvebed adjustment speedVSAvoidoperation safety

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent applies dynamics by making the actuator speed variable rather than constant. The controller dynamically adjusts the extension/contraction speed of the actuator based on its current position, ensuring precise control at different heights while maintaining ease of operation. This resolves the contradiction by enabling both comfortable height adjustment and precise control through adaptive speed management.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent implements beforehand cushioning by controlling the motor's driving force to prevent sudden changes in actuator motion. The feedback control system anticipates potential safety issues by continuously monitoring the actuator's position and adjusting the driving force accordingly, ensuring smooth and safe operation while maintaining productivity.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

Data Source

PatentUS12285372B2Control device and bed device

Publication Date: 2025.04.29 PARAMOUNT BED CO LTD

AI summary

A control device includes a controller that controls, based on a first changing amount of extension/contraction of an axis of a first actuator of a bed device, a speed of the extension/contraction of the axis of the first actuator.