Bowen Zhong

Soochow University (PRC) | SUDA · school of mechanical and electrical engineering

Piezoelectric objective driver positioners are increasingly used in the field of microscopy. They have the advantages of high dynamic and fast response. This paper presents a fast autofocus algorithm for highly interactive microscope system. First, the Tenengrad gradient of the down‐sampled image is used to calculate the image sharpness, and Brent...

Piezoelectric actuators are characterized by high positioning accuracy, high stiffness and a fast response and are widely used in ultra-precision machining technologies such as fast tool servo technology and ultrasonic machining. The rapid response characteristics of piezoelectric actuators often determine the overall quality of machining. However,...

The piezoelectric actuator has been widely used in modern precision cutting technology due to its fast response speed and high positioning accuracy. In recent years, with the development of precision technology, modern cutting requires higher and higher cutting accuracy and efficiency. Therefore, this paper proposes a feedforward control method bas...

Inertial stick-slip driving is widely applied in precision positioning and needs a high stable power amplifier with fast step response to drive it. However, the inertial stick-slip driving is a capacitive load, which easily leads to the output voltage instability of power amplifier, and its ripple voltage also affects the positioning accuracy of in...

This paper proposed a trans-scale fast-moving piezoelectric platform based on the principle of inertial stick-slip driving. The platform consisted of a sliding part, a frictional adjustment part, a stacked piezoelectric ceramic, an inertial part and a base, and the total size was 60 mm×60 mm×58 mm. The novel inertial stick-slip driving principle ba...

The small size and high flexibility of the mobile platform is widely used in many fields such as electron scanning microscope (SEM), but the mobile platform still adopts the structure of guide rail at present and has the problem of large volume and poor flexibility, which cannot meet the requirements of SEM for small cavity. Therefore, this paper p...

Stick–slip driving is widely applied because it provides a nearly infinite range of motion with sub-micron resolution, but its movement velocity is impacted by the dynamic response of high-voltage amplifiers. Therefore, this paper presents a high-voltage amplifier with a high dynamic response specific to stick–slip driving. Considering the capaciti...

In order to achieve the nano-operation in a limited space, a precision motion platform with a cubic centimeter volume based on the principle of inertial stick–slip driving is proposed in this paper. The mechanical structure and the operating principle are discussed. Kinematic models are used to analyze the performance of the prototype. To investiga...

This paper presents an improved autofocus method for human red blood cell images in a microscope. The products of the sum modulus difference and the real-valued fast Fourier transform function are multiplied to obtain an improved sharpness evaluation using the properties of a Gaussian function. It is superior to traditional evaluations in terms of...

In this paper, a large thrust trans-scale precision positioning stage based on the inertial stick–slip driving is proposed, which can output long range motion. The stage consists of a piezoelectric actuator, a cross roller guide, a pair of cantilever beams, the flexure hinge system and the gather system of grating ruler, and the volume is 30 mm (L)...

The stick–slip driving is widely used in the field of nanotechnology because of its high resolution and theoretically unlimited displacement. However, it suffers from such problems as low velocity and one-step displacement instability. In this paper, a method to improve the performance of inertial stick–slip movement from the perspective of overtur...

Predicting the focal plane is an effective method to increase the scanning speed of an automatic microscopy system. However, the image easily defocuses when using traditional predictive scanning methods. In this paper, we introduce an adaptive predictive scanning method (APSM) that greatly improves the accuracy of predictive scanning. Instead of us...

The piezoelectric-actuated inertial stick-slip device (PAISSD) has been applied extensively. However, it is difficult for the PAISSD to achieve nanometer positioning under large stroke. In addition, the speed of the PAISSD is unstable because of the inconsistent surface roughness and different abrasion. Toward solving these problems, this paper pre...

In this work, a trans-scale precision positioning stage without guideway based on the inertial stick-slip driving is proposed, which can provide nano-scale resolution ratio and output long-range motion. The stage consists of an encapsulated piezoelectric actuator, a connection block, a base, a pair of ceramic bars, and magnets, and the volume is 25...

Wire electrochemical micro machining (WEMM) using ultra-short pulses has been recognized as a flexible and effective tool for producing planar contour micro-features. However, high-efficiency mass transport in the extremely narrow machining gap (several micrometers or even smaller) is still a great challenge. Here, a method of WEMM assisted with co...

The piezoelectric-actuated inertial stick-slip device (PAISSD) is widely used in the field of nanotechnology because of its high resolution and theoretically unlimited displacement. However, the small step displacement is an unavoidable issue of stick-slip driving technology. In this research, a stick-slip vibration composite driving method (SSVCDM...

The piezoelectrically-actuated inertial stick-slip device (PAISSD) is widely used in the field of nanotechnology because of its high resolution and theoretically unlimited displacement. However, it suffers from such problems as a small driving force and low velocity. In this paper, an optimized driving waveform is proposed to increase the velocity....

Interdisciplinary research team (IDRT) to solve complex, major multidisciplinary problem, is an important organization form. Members thought fusion and multidisciplinary knowledge integration is the key of implementing interdisciplinary team sustainable competitive advantage. According to the theory of knowledge absorptive capacity, this paper has...

The inertial stick-slip platforms driven by piezoelectric ceramics have comprehensively application in the field of nanomanipulation and nanoassemblies field. In this paper, our investigation is mainly focused on designing and manufacturing a novel structure of inertial stick-slip platform. There are some advantages that higher integration and cons...

There is a surge in the development of actuators based on the stick–slip of piezoelectric actuators in the past decade for the advantages of nanoscale resolution and long travel distances. These actuators, termed PSTA (piezoelectric stick–slip actuators), are widely used in chip assembly and cell manipulation. This chapter provides a comprehensive...

In cell injection, biological microscope is essential. It is commonly that intelligent microscope has many striking features, one of which is having a three-dimensional micro objective platform. The platform has the function of high precision positioning and automatic focus. In this paper, a novel single degree of freedom objective platform based o...

The technology of micro-operation robot is not only an important component in MEMS (Micro Electro Mechanical Systems), but also a new highlight in robot technology as well. Especially, precision position technology driven by PZT actuator is indispensability part in micro-operation robot. This article focuses on precision position technology in micr...

For the smaller thrust, it is difficult to achieve 3D trans-scale precision positioning based on previous stick-slip driving. A large thrust trans-scale precision positioning stage is studied based on the inertial stick-slip driving. The process of the movement is divided into two steps, i.e., the "sliding" phase and the "stickness" phase. In the w...

In this paper, the relationship of the movement of stick-slip driving and the load mass was studied. Firstly, the research status and the principle of stick-slip driving was introduced. Secondly, the dynamic model of stick-slip driving was built. By using dynamic models, the relationship curve of the every step displacement and the load mass was re...

In this paper, the relationship of the movement of stick-slip driving and the step time was studied. Firstly, the research status and the principle of stick-slip driving was introduced. Secondly, the math model of the every step displacement and velocity of stick-slip driving was built. By using mathematical models, the relationship curve of the ev...

In this paper, rigid model and flexible model of a novel stick-slip driving stage was proposed. In the building of rigid and flexible model of a novel stick-slip driving system, LuGre friction model was selected which is most suitable for the stick-slip driving. Combined with LuGre model, the rigid model of stick-slip driving was built and simulate...

This article focuses on developing a novel trans-scale precision positioning stage based on the stick-slip effect. The stick-slip effect is introduced and the rigid kinematics model of the stick-slip driving is established. The forward and return displacement equations of each step of the stick-slip driving are deduced. The relationship of return d...

In this paper, a dynamics model of stick-slip driving system based on LuGre friction model was proposed. In the building of dynamics model of stick-slip driving system, a novel structure of stick-slip stage was designed and LuGre friction model was selected which is most suitable for the stick- slip driving. Combined with LuGre model and dynamics m...