Is The Servo Vibration Accuracy Poor? The Steering Gear Algorithm Engineer Will Help You Adjust It Stably And Accurately, And Hit Wherever You Point It.

When we are making products, steering gear selection and application is indeed a troublesome part. It shakes constantly when moving, lacks accuracy, and responds half a beat too slowly. Have you ever encountered these problems? In fact, many times the problem is not the steering gear hardware itself, but whether the algorithm behind it has been fully understood and optimized. Today, let’s talk about what practical problems the role ofa steering algorithm engineercan help you solve.

What exactly is the steering algorithm adjusting?

Many people think that the steering algorithm is just writing code to make the motor rotate and then you are done. But in fact, its complexity is far beyond imagination. The key work of the algorithm engineer is to sort out the control logic of the three loops of current, speed, and position. This is like instructing a novice driver to help him quickly step on the accelerator to reach the target speed, but also to prevent him from braking suddenly or running a red light. The core task of the algorithm is to find the equilibrium point that is both efficient and stable, which covers the tuning of PID parameters, the introduction of feedforward compensation, and even more advanced filtering algorithms.

Only by thoroughly understanding and mastering these basic logics can the steering gear accurately achieve the function of pointing where to hit. In other words, in order for the steering gear to operate according to the instructions accurately like an experienced driver controlling the vehicle, the underlying logic must be solid and precise, and every link must be closely coordinated to ensure that the steering gear can perform tasks stably and accurately in various complex situations and achieve the ideal control effect.

Why does myservokeep vibrating?

If you find that theservois oscillating back and forth during positioning, or there is a high-frequency buzzing sound, it is most likely that the PID parameters in the algorithm have not been adjusted properly. If the proportional coefficient is too large, the response will be overshoot, like a person leaning forward when the brakes are applied hard; if the differential parameter is not set correctly, it will be particularly sensitive to noise. A good algorithm engineer will first use professional debugging software to capture the current response curve of yourservo, and then adjust these parameters in layers based on changes in load inertia. They will even introduce an adaptive algorithm to allow the steering gear to automatically maintain stability under different loads, fundamentally eliminating the stubborn problem of jitter.

How to make the steering gear respond faster and more accurately

When making innovative products, the biggest fear is the slow response of the servo. It's like you build a robot and give it an instruction to raise its hand, but it starts to move slowly. In this case, the experience will be extremely poor. In order to improve the response speed, algorithm engineers will focus on optimizing the response frequencies of the speed loop and current loop in addition to the position loop. They will increase the PWM frequency of the controller and adopt a more efficient FOC algorithm, so that the motor can produce maximum torque in a very short time.

At the same time, a trajectory planning algorithm will be added to calculate the optimal acceleration and deceleration curve. In this way, the servo can be started quickly and accurately stop at the target position without even a little overshoot.

Can servos of different brands be directly interchanged?

In order to save trouble, many friends think that as long as they are both servos and have the same interface, they can be directly replaced. However, problems arise after they are installed. The key point is that the internal algorithms of each brand of steering gear have different analysis methods of control signals, dead time and PID default parameters. Just like the servo of Brand A is used to starting softly, it will overreact when receiving instructions from Brand B. Therefore, when changing the brand of steering gear, it is best to ask the algorithm engineer to recalibrate it.

The algorithm engineer will use an oscilloscope to capture the control signal, and then adjust the filter parameters inside the servo so that the servo can adapt to the command habits of your original system, thereby achieving seamless switching.

How to judge the level of algorithm engineer

To judge the level of an algorithm, you must not just listen to him claiming that he understands PID. You might as well ask him to share a practical case, such as how he solved the resonance problem that occurred under a specific load. Carefully observe his way of solving problems to see whether he simply adjusts parameters, or whether he conducts in-depth analysis from the perspective of a dynamic model. A real expert will tell you about introducing a notch filter to suppress mechanical resonance, or using a state observer to compensate for the delay of the feedback signal.

Additionally, you can ask for his opinion on the robustness of the code. An excellent algorithm must not only be able to run properly, but also be able to work continuously and stably in harsh environments such as voltage fluctuations and signal interference. Only in this way can real skills be demonstrated.

Adapt algorithms to your innovative products

The action logic of each innovative product is unique. For example, if you are making a bionic bird, the frequency and amplitude of its wings need to change in real time; or if you are making an industrial gripper, it needs to be fast first and then slow when grabbing fragile items. Tell the algorithm engineer these special needs, and he can customize an exclusive control strategy for you. He will build a mathematical model based on the mechanical structure of your product, then repeatedly verify it in the simulation environment, and finally generate a set of customized algorithm firmware. This process can help you maximize the unique performance of your product and form a real technical barrier.

After reading the above, you should have a clearer understanding of the practical problems that the steering gear algorithm can solve. Want to know how much room there is for improvement in motion control of the product you have? You may wish to search the official websites of professional steering gear manufacturers with your specific needs and chat with their algorithm engineers. You may find unexpected gains. What is the biggest problem you currently encounter in steering gear applications? Welcome to leave a message in the comment area for discussion. If you find this article useful, remember to like and share it with more friends who make products.