Design of Total Sliding-Mode-Based Genetic Algorithm Control for Hybrid Resonant-Driven Linear Piezoelectric Ceramic Motor

This study presents a total sliding-mode-based genetic algorithm control (TSGAC) system for a linear piezoelectric ceramic motor (LPCM) driven by a newly designed hybrid resonant inverter. First, the motor configuration and driving circuit of an LPCM are introduced, and its hypothetical dynamic model is represented by a nonlinear function with unknown system parameters. In the hybrid resonant drive system, it has the merits of the high voltage gain from a parallel-resonant current source, and the invariant output characteristic from a two-inductance two-capacitance resonant driving circuit. Since the dynamic characteristics and motor parameters of the LPCM are highly nonlinear and time varying, a TSGAC system is therefore investigated based on direction-based genetic algorithm with the spirit of total sliding-mode control (TSC) and fuzzy-based evolutionary procedure to achieve high-precision position control under a wide operation range. In this control scheme, a GAC system is utilized to be the major controller, and the stability can be indirectly ensured by the concept of TSC without strict constraints and detailed system knowledge. In addition, the effectiveness of the proposed drive and control system is verified by numerical simulations and experimental results in the presence of uncertainties     

一种直线压电电机驱动足的结构优化设计

直线压电电机在精密仪器、生物医学和半导体封装等行业具有广阔的应用前景,其定子结构特性直接影响了电机运行的稳定性和输出性能。以一种直线压电电机定子驱动足的位移输出特性为优化目标,研究该类电机驱动足结构优化设计方法,提高该类电机的综合输出性能。通过分析驱动足的微观几何位移特性,理论研究了驱动足结构参数对输出端宏观运动特性的影响。研究了不同结构下驱动足的输出特性,确定驱动足的结构参数及最优值。最后对优化后的驱动足位移输出性能和力学性能进行仿真分析。加工优化样机,并测试电机的机械输出性能。实验结果表明,电机的输出力为0.64 N,比优化前增大了52.4％。     

基于F P腔的压电陶瓷直线驱动研究

提出一种新的直线驱动压电陶瓷的方法.通过压电陶瓷对可调谐法布里-珀罗(F-P)腔进行驱动,从而改变F-P腔的透射光波长,使用光栅阵列对透射光波长进行定位,找出压电陶瓷的电压-位移特性曲线,并对此曲线取反函数作为新的驱动电压曲线,使压电陶瓷能得到直线驱动.最后使用了F-P腔对这种方法驱动的压电陶瓷运动曲线进行了测试,结果表明,使用这种驱动方法的压电陶瓷运动曲线与曲线起点到终点的直线方差的积分为393.78,而使用三角波电压驱动的压电陶瓷运动曲线与曲线起点到终点的直线方差的积分为44 554.65,可见这种方法使线性程度得到提高.     

一种高效率线性压电陶瓷驱动电源设计

为改善压电陶瓷驱动电源的静态功耗和动态性能,提出了可变静态工作点和工作电压的高压放大器。首先使用恒流源结构的放大器构成典型的高压放大器,然后通过比例微分电路动态调整放大器的工作电流,最后利用多组抽头电源给高压放大器分段供电,进一步降低系统功耗。实验结果表明,放大器在10 mA静态电流下,可以动态输出400 mA电流;放大器工作电压可以根据输出电压大小在50 V、100 V、150 V、210 V之间自动切换。放大器在很低的静态电流下可以获得很好的动态特性,满足设计要求。     

Robust Petri Fuzzy-Neural-Network Control for Linear Induction Motor Drive

This study focuses on the development of a robust Petri-fuzzy-neural-network (PFNN) control strategy applied to a linear induction motor (LIM) drive for periodic motion. Based on the concept of the nonlinear state feedback theory, a feedback linearization control (FLC) system is first adopted in order to decouple the thrust force and the flux amplitude of the LIM. However, particular system information is required in the FLC system so that the corresponding control performance is influenced seriously by system uncertainties. Hence, to increase the robustness of the LIM drive for high-performance applications, a robust PFNN control system is investigated based on the model-free control design to retain the decoupled control characteristic of the FLC system. The adaptive tuning algorithms for network parameters are derived in the sense of the Lyapunov stability theorem, such that the stability of the control system can be guaranteed under the occurrence of system uncertainties. The effectiveness of the proposed control scheme is verified by both numerical simulations and experimental results, and the salient merits are indicated in comparison with the FLC system     

压电超声马达驱动电路的研究

提出了一种基于计算机控制的压电超声马达谐振频率自动搜寻系统。在此系统中,首先使用计算机来产生一个频率可调的超声波驱动信号,然后通过对马达转数的检测,系统得到压电超声马达的最佳谐振频率值。试验证明本系统能够自动地查询到压电超声马达的最佳谐振点,并且,通过实验结果讨论了马达谐振频率与电路匹配状态对压电马达的影响。     

Recurrent-Fuzzy-Neural-Network-Controlled Linear Induction Motor Servo Drive Using Genetic Algorithms

A recurrent fuzzy neural network (RFNN) controller based on real-time genetic algorithms (GAs) is developed for a linear induction motor (LIM) servo drive in this paper. First, the dynamic model of an indirect field-oriented LIM servo drive is derived. Then, an online training RFNN with a backpropagation algorithm is introduced as the tracking controller. Moreover, to guarantee the global convergence of tracking error, a real-time GA is developed to search the optimal learning rates of the RFNN online. The GA-based RFNN control system is proposed to control the mover of the LIM for periodic motion. The theoretical analyses for the proposed GA-based RFNN controller are described in detail. Finally, simulated and experimental results show that the proposed controller provides high-performance dynamic characteristics and is robust with regard to plant parameter variations and external load disturbance     

探讨超声电机用压电陶瓷

简要介绍超声电机的工作原理及对压电陶瓷的性能要求，分析了3种压电陶瓷材料对超声电机性能的影响，确定了用于超声电机的压电陶瓷材料的性能指标，并对压电陶瓷材料的制备工艺进行了探讨性研究．     

FPGA-Based Adaptive Backstepping Sliding-Mode Control for Linear Induction Motor Drive

A field-programmable gate array (FPGA)-based adaptive backstepping sliding-mode controller is proposed to control the mover position of a linear induction motor (LIM) drive to compensate for the uncertainties including the friction force. First, the dynamic model of an indirect field-oriented LIM drive is derived. Next, a backstepping sliding-mode approach is designed to compensate the uncertainties occurring in the motion control system. Moreover, the uncertainties are lumped and the upper bound of the lumped uncertainty is necessary in the design of the backstepping sliding-mode controller. However, the upper bound of the lumped uncertainty is difficult to obtain in advance of practical applications. Therefore, an adaptive law is derived to adapt the value of the lumped uncertainty in real time, and an adaptive backstepping sliding-mode control law is the result. Then, an FPGA chip is adopted to implement the indirect field-oriented mechanism and the developed control algorithms for possible low-cost and high-performance industrial applications. The effectiveness of the proposed control scheme is verified by some experimental results. With the adaptive backstepping sliding-mode controller, the mover position of the FPGA-based LIM drive possesses the advantages of good transient control performance and robustness to uncertainties in the tracking of periodic reference trajectories.     

一种新型直线压电马达驱动器

在分析以色列Nanomotion公司直线压电马达运行机理的基础上，设计了一种基于谐振原理压电马达驱动器。采用CPLD设计作为电路的逻辑控制器，利用两个背靠背高压浮地驱动MOSFET实现方向开关。通过实验证实了该压电马达驱动电路能够满足驱动压电马达的要求，同传统的驱动器相比，该文所设计驱动器提高了输出驱动信号的准确度。     

压电线性马达与纳米马达

国外对压电线性马达的研究已经进行了有些年了，并已有较为成熟的应用，它利用压电陶瓷基片或薄膜、电致伸缩材料等功能部件实现驱动。主要特征是能够提供较大的横向输出力。同时。又可能实现超高精度和小位移——毫米级的位移行程和原子级的精度。一般用空载速度、最大推进力、效率及其他一些参数来表表压电线性马达。该文首先介绍几种类型的压电线性马达。包括它们的结构、运行原理和特性等。然后再介绍纳米马达，应该指出，纳米马达是压电线性马达的发展。其特点是能够实现纳米级精度的位移。国外已经在精密仪器、航天航空、自动控制、办公自动化、微型机械系统、微装配、纳米定位等领域得到了实际应用。     

A Globally Stable High-Performance Adaptive Robust Control Algorithm With Input Saturation for Precision Motion Control of Linear Motor Drive Systems

This paper focuses on the synthesis of nonlinear adaptive robust controller with saturated actuator authority for a linear motor drive system, which is subject to parametric uncertainties and uncertain nonlinearities such as input disturbances as well. Global stability with limited control efforts is achieved by breaking down the overall uncertainties to state-linearly-dependent uncertainties (such as viscous friction) and bounded nonlinearities (such as Coulomb friction, cogging force, etc.), and dealing with them via different strategies. Furthermore, a guaranteed transient performance and final tracking accuracy can be obtained by incorporating the well-developed adaptive robust control strategy and effective parameter identifier. Asymptotic output tracking is also achieved in the presence of parametric uncertainties only. Meanwhile, in contrast to the existing saturated control structures that are designed based on a set of transformed coordinates, the proposed saturated controller is carried out in the actual system states, which have clear physical meanings. This makes it much easier and less conservative to select the design parameters to meet the dual objective of achieving global stability with limited control efforts for rare emergency cases and the local high-bandwidth control for high performance under normal running conditions. Real-time experimental results are obtained to illustrate the effectiveness of the proposed saturated adaptive robust control strategy     

一种用于压电陶瓷驱动电路的线性稳压电源

该文提出了一种可用于压电陶瓷驱动电路的低纹波、高稳定性的直流线性稳压电源的设计方案,分析了其工作原理并测量了其电学特性。采用可调三端稳压器为核心器件,利用低温漂电压基准源提高了稳压器的反馈电压,采用瞬态抑制二极管抑制了上电瞬间的冲击浪涌,有效地抑制了输出纹波,提高了电源的电磁兼容性和可靠性。实验结果表明,该电源可输出10~200 V的正负双极性电压,负载调整率小于0.5%,纹波小于10 mV,现已成功应用于以PA85功率放大器为核心器件的压电陶瓷驱动电路中。     

基于PA85的新型压电陶瓷驱动电源

压电陶瓷驱动电源是压电陶瓷微位移器应用中关键部件.PA85是一种高压、高精度的MOSFET运算放大器.文章介绍了一种基于PA85的新型压电陶瓷驱动电源,详细介绍了电源复合放大电路部分的设计原理和并对其稳定性进行了分析.该电源具有精度高,驱动能力强,结构简单,稳定性好的特点.     

高精度大功率压电陶瓷驱动关键技术

压电陶瓷驱动电源是压电陶瓷微位移系统中的关键部件。以高压功率放大器PA93为核心,提出了一种新型高精度、大功率压电陶瓷驱动电源,适合驱动大行程、大推力压电陶瓷致动器。重点阐述了电路的设计方案,对复合放大电路进行了特性分析。实验结果表明,该驱动电源具有精度高,输出电压高,电流大,稳定性好的特点。当驱动等效负载电容为24 μF的压电陶瓷时,在0~100 Hz频率范围内实现了0~10 V信号到0~100 V信号的动态放大,输出电压精度优于3×10-5,最大输出电流350 mA。     

超声洁牙器压电陶瓷换能器的研制

首先对超声洁牙器用压电陶瓷换能器的结构设计作了论术并进行了计算，接着介绍了包括陶瓷换能器在内的超声洁牙器的材料选择、具体组成以及性能参数。     

基于盘型对称驱动的惯性冲击旋转压电马达

该文提出了一种基于盘型对称驱动的惯性冲击旋转压电马达。该马达主要由定子、转子、驱动足和预紧装置组成。马达激励信号为锯齿波信号,采用压电叠堆激励实现马达高功率输出。马达通过螺杆将定子与预紧装置装配于一体,实现了马达结构紧凑化与微型化。设计加工了马达样机并通过实验验证了马达的工作原理,对马达的综合性能进行了分析和测试。测试结果表明,当马达预紧装置施加的预紧力为1 N,输入激励电压峰-峰值为80 V,激励信号频率为1 kHz,且每输出一个周期锯齿波,激励信号延迟100 ms再输出下一个,以研究马达静态启动特性和步长,测得马达的最大空载速度达到3.05 r/min,平均步长为0.032 rad;激励信号频率为3 kHz时,马达的最大空载速度达到9.1 r/min,马达最大负载可达16.2 N·mm;马达在0.5~3 kHz激励信号频率范围内均可实现转动。     

高频压电陶瓷谐振器的研制

介绍了试帛高频压电陶瓷谐振器的方法。通过采用能陷振动模式,优化预烧及烧结湿度和保温时间,并进行改性物质掺杂,制作出机械品质因数高、频率湿度特性良好的高频压电陶瓷谐振器。     

功率超声压电陶瓷换能器振动特性的控制

本文提出了用测量压电陶瓷圆板振动频谱和电导纳特性,研究磨边缘的压电陶瓷圆板产生能阱,用等效质量因子m控制耦合径向振动的影响。     

压电超声微马达的研究

介绍了压电超声微马达在国内外的主要研究成果，比较了各类型微马达的优缺点，提出了作者发展压电微马达的几点建议。