In the field of robotics and autonomous driving, achieving accurate 3D object detection is crucial for the perception of complex traffic environments. Most current research uses deep learning methods to extract object...
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In this paper, a data-driven process monitoring method for quality variables is presented in this paper. Modified partial least squares (MPLS) approach is a kind of linear multivariate statistical analysis methods, wh...
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ISBN:
(纸本)9781538666630
In this paper, a data-driven process monitoring method for quality variables is presented in this paper. Modified partial least squares (MPLS) approach is a kind of linear multivariate statistical analysis methods, which has a good effect on process monitoring of linear industrial system. However, it is not suitable for monitoring nonlinear complex industrial systems. Based on it, a nonlinear process monitoring method, kernel modified partial least squares (MKPLS) approach, is obtained by introducing the nuclear method into the MPLS method, in order to detect the fault that can affect quality variables. First of all, the fundamental thoughts of the kernel method are given. Then, introduce kernel method to MPLS approach to get MKPLS method. After that, the monitoring effect of MKPLS method on the nonlinear process is tested by nonlinear numerical simulation. Finally, MKPLS method is applied to the wastewater treatment process (WWTP) and process monitoring results are presented in the form of figure.
It39;s difficult for a robot to adjust its sensor-less parallel gripper to a proper degree, holding the object with a tolerable deformation and no slipping, when operating deformable objects with unknown physical pr...
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ISBN:
(纸本)9781538695944
It's difficult for a robot to adjust its sensor-less parallel gripper to a proper degree, holding the object with a tolerable deformation and no slipping, when operating deformable objects with unknown physical property (OUPP). This paper introduces a grasping strategy to solve this problem. Firstly, a semantic segmentation model was applied to monitor the deformation of the object by generating the cloud points of the region. And this deformation was treated as a criterion to measure whether the grasping force overload or not. Based on the strategy, a cup grasping experiment was conducted, which turned out a 90 % success rate with the proportion of deformation less than 2%. Thus, it demonstrates the strategy proposed can improve the performance of robots with sensor-less end-effector on OUPP.
The dynamic-memory event-triggered control problem for networked control systems is investigated in this paper. Firstly, a dynamic-memory event-triggered scheme (DMETS) is proposed to reduce the unnecessary data trans...
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It39;s very rational to have menu control and display function for oscilloscope to provide various functionality and make it user friendly. A responsive and well-structured menu design can make the system convenient...
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The vehicle will inevitably be vibrated in the process of running. The suspension is an important device to ensure the comfort and safety of the vehicle. In order to study the control method of the suspension, we simu...
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The vehicle will inevitably be vibrated in the process of running. The suspension is an important device to ensure the comfort and safety of the vehicle. In order to study the control method of the suspension, we simulate a quarter of the active suspension device which uses longitudinal acceleration as a measurement index. we compare the control effect of traditional PID control with robust predictive control. Through simulation, we find that the traditional PID control can realize the stability control of the active suspension without constraints. However, on the one hand, it brings serious jitter, on the other hand, it is not suitable for the actual constrained situation. On this basis, we consider the robust predictive control with constraints. By means of simulation, we obtain that the robust predictive control can produce less jitter under the premise of achieving the stable control of the constrained system, which is more suitable for practical engineering requirements.
The highly nonlinear coupled dynamics in a parallel-kinematics manipulator typically cannot be simply treated as disturbance. Model-based control schemes are usually used to address this issue. This paper presents the...
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ISBN:
(纸本)9798350307573;9798350307566
The highly nonlinear coupled dynamics in a parallel-kinematics manipulator typically cannot be simply treated as disturbance. Model-based control schemes are usually used to address this issue. This paper presents the improvement of contouring accuracy of a planar 3PRR parallel-kinematics manipulator by applying two model-based control schemes namely decentralized PID control with centralized computed torque feedforward and centralized inverse dynamics control with feedforward. The simulation shows that both control schemes provide better contouring accuracy than decentralized PID control scheme. Furthermore, it is shown that the decentralized PID control with centralized computed torque feedforward outperforms the centralized inverse dynamics control with feedforward given an accurate dynamic model of the manipulator.
In this paper, a new voltage-mode first-order multifunction filter using the modified current controlled current conveyor transconductance amplifier (M-CCCCTA) is presented. The proposed filter has two input-voltage n...
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ISBN:
(纸本)9781538666630
In this paper, a new voltage-mode first-order multifunction filter using the modified current controlled current conveyor transconductance amplifier (M-CCCCTA) is presented. The proposed filter has two input-voltage nodes with single output voltage node. It can realize three first-order filtering output responses, low-pas filter (LPF), high-pass filter (HPF) and all-pass filter (APF). The natural frequency is electronically tuned. For all-pass filter, the phase shift is electronically varied from 0 to 180 degree which is conveniently controlled by microprocessor or microcontroller. Also, the matching condition of the parameter used to tune the phase response is not required. The proposed first-order filter employs single grounded capacitor, single grounded resistor, and single M-CCCCTA. The simulation results from PSpice program are included to confirm workability of the proposed filter.
This research aimed to propose the performance testing of a modern gesture control device called MYO armband with an application in feature extraction based on multi-channels EMG. The EMG signal was collected from the...
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ISBN:
(纸本)9781509060887
This research aimed to propose the performance testing of a modern gesture control device called MYO armband with an application in feature extraction based on multi-channels EMG. The EMG signal was collected from the forearm muscles during 6 gestures including hand close, hand open, hand flexor, double tap, and normal hand position. In this research, we applied the well-known feature extraction method called mean absolute value (MAV). The EMG features were represented in scatter diagrams to explain their behaviors. The well-known quantitative parameters used to evaluate the performance of EMG feature included davies-bouldin criterion (DB index) and scattering criterion. To present the quality of EMG signal, the signal to noise ratio (SNR), total harmonic distortion (THD), and power density spectrum (PSD) were used. The results showed that the EMG signal quality and EMG features extracted by MYO armband was robust and effective since the quantitative parameters were higher than the conventional EMG measurement system. The result was promising.
In this paper, we presented a sufficient condition on the frequency domain for the absolutely stable analysis of the Takagi-Sugeno (T-S) fuzzy control system. For modeling the plant and controller we used transfer fun...
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ISBN:
(数字)9781728186382
ISBN:
(纸本)9781728186382
In this paper, we presented a sufficient condition on the frequency domain for the absolutely stable analysis of the Takagi-Sugeno (T-S) fuzzy control system. For modeling the plant and controller we used transfer functions instead of the state description and showed that the overall T-S fuzzy plant is a polytope of transfer functions. Besides, by applying local proportional controllers, the bounds of proportional parameter of the overall fuzzy controller can be computed. Hence the robust absolutely stability criterions with graphical interpretation for closed-loop T-S fuzzy control system were derived.
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