Picture a marine winch lowering thousand-pound loads inch by inch or a movable bridge that stops at a precise position every time. This impressive level of control cannot be achieved with hydraulic power alone. Electrohydraulic control packages combine the raw power of hydraulics with the intelligent control of electric systems, giving operators new levels of accuracy, smoother controls, and overall more reliable system performance.
From steering systems and ballast controls to launch and recovery systems, and valve automation packages, Supreme Integrated Technology engineers are trained to design integrated systems for the most demanding applications. By working as a single-source provider for key system components, SIT offers mechanical, structural, hydraulic, and electrical expertise–providing our clients with unbeatable turnkey solutions geared toward long-term performance. Use this blog as a guide to learning how hybrid electrohydraulic control packages can optimize your application and prevent downtime.
What are Hybrid Electrohydraulic Control Packages?
A hybrid electrohydraulic control package combines rugged hydraulic power components with intelligent electrical control technologies to create a system that can deliver both force and detailed accuracy. Within hybrid systems, electrical signals from programmable logic controllers (PLCs), sensors, and human machine interfaces (HMIs) control hydraulic components such as pumps, valves, motors, and cylinders.
Instead of depending on manual valve adjustments or basic on and off functions, hybrid systems continuously monitor operating conditions and are able to automatically adjust pressure, flow, speed, and position. This allows operators to achieve more precise motion control while still benefiting from the high force density that hydraulic systems are known for.
For engineers working in challenging environments, the biggest advantage is the ability to create a closed-loop system. Components such as pressure sensors, flow sensors, position transducers, and load feedback devices constantly provide data to the control system, which then makes real-time adjustments to maintain performance.
How Hybrid Systems Improve Hydraulic Performance
Traditional hydraulic systems are effective for applications where generating large amounts of force is required, however, they can be limited when precision and repeatability is required. In many cases, certain operating requirements can also lead to unexpected failures. Abrupt starts and stops, inconsistent positioning, and excessive component wear are all common issues in conventional hydraulic systems.
Hybrid electrohydraulic control packages solve the majority of these challenges by incorporating proportional valves, servo valves, and automated control logic to create more accurate movement and results. These components make it possible to:
- Improve position accuracy
- Deliver smoother acceleration and deceleration
- Reduce pressure spikes and mechanical shock
- Minimize wasteful energy use
- Increase repeatability for critical movements
- Improve operator visibility and control
One key example is how hydraulic cylinder performance can be improved with the integration of proportional valves. This is due to proportional valves being able to open partially to any degree, metering flow precisely, instead of simply operating at a fully closed or open position. In turn, this creates a significantly more responsive and adaptable system. Regardless of your specific application needs, SIT is your premiere partner for developing a turnkey, fully unique electrohydraulic control package that is built to provide hydraulic power and intelligent control–despite facing challenging environments.
Applications That Benefit from Hybrid Electrohydraulic Control Packages
Hybrid electrohydraulic control packages offer the largest scale of system-wide improvement to applications where both high force and precise motion are paramount. This includes marine winches and hoisting systems, hydraulic steering systems, ballast control systems, and heavy civil infrastructure such as movable bridges. All of these applications rely on precise motion control in order to improve safety and mechanical lifecycles while handling monumental loads.
Why System Integration Matters In Demanding Applications
In order to design a fully capable hybrid electrohydraulic control packages, a lot more goes into the process than simply combining electric and hydraulic components. SIT delivers completely integrated electrohydraulic control packages by managing the design, fabrication, testing, and long-term support of your system–helping you find a solution that offers results and long-lasting lifecycles. This is because by designing a system from the start, SIT can mitigate the vast majority of compatibility issues that may lead to premature damage or failures.
Frequently Asked Questions
Q: What is the difference between a proportional valve and a servo valve in a hybrid electrohydraulic system?
A: Proportional valves are typically used for general flow and pressure control where moderate accuracy is acceptable, while servo valves provide much tighter control for highly precise motion, speed, or positioning applications. Servo valves are often used in critical systems such as launch and recovery equipment, bridge movement systems, and offshore lifting operations.
Q: Why are closed-loop feedback systems important in electrohydraulic control packages?
A: Closed-loop feedback systems continuously monitor variables such as pressure, position, speed, and load. This allows the control system to automatically adjust hydraulic outputs in real time, improving precision, reducing overshoot, and maintaining consistent performance under changing operating conditions.
Q: How do hybrid electrohydraulic systems improve marine winch performance?
A: Hybrid electrohydraulic systems allow marine winches to operate with smoother acceleration and deceleration, more accurate load positioning, and better tension control. This is especially important for subsea operations, launch and recovery systems, and active heave compensation.
Q: What types of sensors are commonly used in electrohydraulic control systems?
A: Most hybrid electrohydraulic control packages use pressure sensors, temperature sensors, flow sensors, linear position transducers, load cells, and rotary encoders. These devices provide the feedback needed to monitor system performance and make real-time control adjustments.
Q: What role do HMIs play in hybrid electrohydraulic packages?
A: Human Machine Interfaces give operators visibility into system conditions such as pressure, flow, alarms, temperature, and operating status. They also allow operators to adjust settings, troubleshoot issues, and monitor performance from a centralized display.
Contact SIT today to learn more about how we can configure customized hybrid electrohydraulic control packages for your application.
