对于随机神经振荡器的最佳控制
Faranak Rajabi1, Frederic Gibou2, Jeff Moehlis2
1Department of Mechanical Engineering, University of California, Santa Barbara, Santa Barbara, CA, USA. faranakrajabi@ucsb.edu.
Biological cybernetics
|March 20, 2025
概括
这项研究引入了一种节能控制策略,以脱同步神经网络,灵感来自帕金森病的治疗方法. 这种新的方法减少了神经刺激的能量消耗,有可能改善植入装置的寿命.
科学领域:
- 计算神经科学是一种神经科学.
- 神经技术的神经技术
- 控制理论 控制理论
背景情况:
- 神经网络同步与神经系统疾病有关.
- 现有的脱同步方法可能耗费大量能源.
- 内在的神经噪声给控制策略带来了挑战.
研究的目的:
- 开发一种基于事件的,节能的控制策略,用于对联神经网络的脱同步.
- 将随机动态纳入控制模型,以考虑神经噪声.
- 为了减少神经刺激中的能量消耗,同时保持有效性.
主要方法:
- 最佳控制理论应用于神经元网络动态.
- 随机汉密尔顿 - 雅各比 - 贝尔曼方程使用先进的计算解答器和水平设置方法来解决.
- 基于事件的控制输入,旨在驱动神经元动态向无相状态.
主要成果:
- 通过随机化神经元尖峰时间实现了显著的网络脱同步.
- 与确定性控制方法相比,证明了相当大的能源节约.
- 对神经元合和网络异质性的变化表现出强度.
结论:
- 开发的基于事件的随机控制策略为神经网络脱同步提供了一种节能的方法.
- 这种方法对改善深度大脑刺激协议和延长植入刺激器的电池寿命有潜在的影响.
- 计算框架可以适应其他随机最佳控制问题.
相关概念视频
Time-Domain Interpretation of PD Control
77
Proportional-Derivative (PD) control is a widely used control method in various engineering systems to enhance stability and performance. In a system with only proportional control, common issues include high maximum overshoot and oscillation, observed in both the error signal and its rate of change. This behavior can be divided into three distinct phases: initial overshoot, subsequent undershoot, and gradual stabilization.
Consider the example of control of motor torque. Initially, a positive...
Consider the example of control of motor torque. Initially, a positive...
77
Control Systems
987
Control systems are everywhere in contemporary society, influencing diverse applications from aerospace to automated manufacturing. These systems can be found naturally within biological processes, such as blood sugar regulation and heart rate adjustment in response to stress, as well as in man-made systems like elevators and automated vehicles. A control system is essentially a network of subsystems and processes that collaboratively convert specific inputs into desired outputs.
At the heart...
At the heart...
987
Time and frequency -Domain Interpretation of PI Control
94
Proportional-Integral (PI) controllers are essential in many control systems to improve stability and performance. They are commonly used in everyday devices like thermostats to enhance system damping and reduce steady-state error. When the zero in the controller's transfer function is optimally placed, the system benefits significantly in terms of stability and accuracy.
Acting as a low-pass filter, the PI controller slows the system's response and extends settling times. This requires...
Acting as a low-pass filter, the PI controller slows the system's response and extends settling times. This requires...
94
Design Example: Underdamped Parallel RLC Circuit
236
Consider designing an oscillator circuit, a crucial component in various electronic devices and systems. The objective is to create an oscillator circuit with specific characteristics: a damped natural frequency of 4 kHz and a damping factor of 4 radians per second. To accomplish this, a parallel RLC circuit is employed, known for its ability to sustain oscillations at a resonant frequency. In this case, the damping factor is pivotal in achieving the desired performance.
Starting with a fixed...
Starting with a fixed...
236
Second Order systems II
75
In an underdamped second-order system, where the damping ratio ζ is between 0 and 1, a unit-step input results in a transfer function that, when transformed using the inverse Laplace method, reveals the output response. The output exhibits a damped sinusoidal oscillation, and the difference between the input and output is termed the error signal. This error signal also demonstrates damped oscillatory behavior. Eventually, as the system reaches a steady state, the error diminishes to zero.
75
Forced Oscillations
6.5K
When an oscillator is forced with a periodic driving force, the motion may seem chaotic. The motions of such oscillators are known as transients. After the transients die out, the oscillator reaches a steady state, where the motion is periodic, and the displacement is determined.
6.5K


